Merge branch 'main' into testbed

app/main.py

@@ -92,28 +92,9 @@ class RegexRule(BaseModel):
     replacement: str = ""
 
 
-class ReplacementRule(BaseModel):
-    search: str
-    replace: str = ""
-
-
-class RegexRulesGroup(BaseModel):
-    local_pre: list[ReplacementRule] = []
-    local_post: list[ReplacementRule] = []
-    remote_pre: list[ReplacementRule] = []
-    remote_post: list[ReplacementRule] = []
-
-
-class PathMappingPayload(BaseModel):
-    mode: str = "SIMPLE"
-    simple: list[ReplacementRule] = []
-    regex: RegexRulesGroup = RegexRulesGroup()
-
-
 class SyncSettingsResponse(BaseModel):
     sync_mode: str
     path_rules: list[RegexRule]
-    path_mapping: dict | None = None
     local_path: str
     library_name: str | None = None
     server_url: str | None = None
@@ -371,7 +352,6 @@ async def get_settings():
     return SyncSettingsResponse(
         sync_mode=server_config.sync_mode,
         path_rules=rules,
-        path_mapping=server_config.path_mapping,
         local_path=server_config.local_path,
         library_name=server_config.library_name,
         server_url=server_config.url,
@@ -400,22 +380,6 @@ async def update_regex_rules(payload: RegexRulePayload):
     return {"rules": payload.rules}
 
 
-@app.put("/api/settings/path-mapping")
-async def update_path_mapping(payload: PathMappingPayload):
-    path_mapping_dict = {
-        "mode": payload.mode,
-        "simple": [{"search": rule.search, "replace": rule.replace} for rule in payload.simple],
-        "regex": {
-            "local_pre": [{"search": rule.search, "replace": rule.replace} for rule in payload.regex.local_pre],
-            "local_post": [{"search": rule.search, "replace": rule.replace} for rule in payload.regex.local_post],
-            "remote_pre": [{"search": rule.search, "replace": rule.replace} for rule in payload.regex.remote_pre],
-            "remote_post": [{"search": rule.search, "replace": rule.replace} for rule in payload.regex.remote_post],
-        }
-    }
-    server_config.set_and_save_config(path_mapping=path_mapping_dict)
-    return {"path_mapping": server_config.path_mapping}
-
-
 @app.put("/api/settings/library")
 async def update_library(payload: LibrarySelection):
     server_config.set_and_save_config(library_name=payload.library_name)

app/utils/config.py

@@ -3,16 +3,6 @@ import os
 from app.utils.logger import logger
 
 DEFAULT_SYNC_MODE = "merge_local_primary"
-DEFAULT_PATH_MAPPING = {
-    "mode": "SIMPLE",
-    "simple": [],
-    "regex": {
-        "local_pre": [],
-        "local_post": [],
-        "remote_pre": [],
-        "remote_post": []
-    }
-}
 
 CONFIG_PATH = os.path.abspath(
     os.path.join(os.path.dirname(__file__), "..", "config.json")
@@ -31,8 +21,7 @@ class ServerConfig:
         self.library_name = ""
         self.sync_mode = DEFAULT_SYNC_MODE
         self.local_path = "playlist"
-        self.path_rules: list[dict[str, str]] = []  # Legacy field for backward compatibility
-        self.path_mapping: dict = DEFAULT_PATH_MAPPING.copy()
+        self.path_rules: list[dict[str, str]] = []
         self.schedule_mode = "DISABLED"
         self.schedule_cron = ""
         self.schedule_daily_time = "02:00"
@@ -66,23 +55,6 @@ class ServerConfig:
         self.sync_mode = config.get("sync_mode", DEFAULT_SYNC_MODE)
         self.local_path = config.get("local_path", "playlist")
         self.path_rules = config.get("path_rules", []) or []
-        
-        # Load path_mapping with default fallback
-        path_mapping_config = config.get("path_mapping")
-        if path_mapping_config:
-            self.path_mapping = {
-                "mode": path_mapping_config.get("mode", "SIMPLE"),
-                "simple": path_mapping_config.get("simple", []),
-                "regex": {
-                    "local_pre": path_mapping_config.get("regex", {}).get("local_pre", []),
-                    "local_post": path_mapping_config.get("regex", {}).get("local_post", []),
-                    "remote_pre": path_mapping_config.get("regex", {}).get("remote_pre", []),
-                    "remote_post": path_mapping_config.get("regex", {}).get("remote_post", [])
-                }
-            }
-        else:
-            self.path_mapping = DEFAULT_PATH_MAPPING.copy()
-        
         self.schedule_mode = config.get("schedule_mode", "DISABLED")
         self.schedule_cron = config.get("schedule_cron", "")
         self.schedule_daily_time = config.get("schedule_daily_time", "02:00")
@@ -104,7 +76,6 @@ class ServerConfig:
             "sync_mode": self.sync_mode,
             "local_path": self.local_path,
             "path_rules": self.path_rules,
-            "path_mapping": self.path_mapping,
             "schedule_mode": self.schedule_mode,
             "schedule_cron": self.schedule_cron,
             "schedule_daily_time": self.schedule_daily_time,
@@ -150,21 +121,6 @@ class ServerConfig:
     def set_path_rules(self, path_rules: list[dict[str, str]]) -> None:
         self.path_rules = path_rules or []
 
-    def set_path_mapping(self, path_mapping: dict) -> None:
-        if path_mapping:
-            self.path_mapping = {
-                "mode": path_mapping.get("mode", "SIMPLE"),
-                "simple": path_mapping.get("simple", []),
-                "regex": {
-                    "local_pre": path_mapping.get("regex", {}).get("local_pre", []),
-                    "local_post": path_mapping.get("regex", {}).get("local_post", []),
-                    "remote_pre": path_mapping.get("regex", {}).get("remote_pre", []),
-                    "remote_post": path_mapping.get("regex", {}).get("remote_post", [])
-                }
-            }
-        else:
-            self.path_mapping = DEFAULT_PATH_MAPPING.copy()
-
     def set_schedule(
         self,
         mode: str,
@@ -194,7 +150,6 @@ class ServerConfig:
         sync_mode: str | None = None,
         local_path: str | None = None,
         path_rules: list[dict[str, str]] | None = None,
-        path_mapping: dict | None = None,
     ) -> None:
         if theme is not None:
             self.set_theme(theme)
@@ -216,8 +171,6 @@ class ServerConfig:
             self.set_local_path(local_path)
         if path_rules is not None:
             self.set_path_rules(path_rules)
-        if path_mapping is not None:
-            self.set_path_mapping(path_mapping)
         self.save()
 
 

app/utils/playlist_merge.py

@@ -40,15 +40,6 @@ class PlaylistSyncResult:
     output_dir: str
 
 
-@dataclass
-class CompiledRegexRules:
-    """Holds compiled regex rules for all four processing stages."""
-    local_pre: list[tuple[re.Pattern[str], str]]
-    local_post: list[tuple[re.Pattern[str], str]]
-    remote_pre: list[tuple[re.Pattern[str], str]]
-    remote_post: list[tuple[re.Pattern[str], str]]
-
-
 def load_paths(text: str) -> list[str]:
     """Normalize playlist text into a list of absolute paths.
 
@@ -81,21 +72,12 @@ def save_paths(paths: Sequence[str]) -> str:
 
 
 def _compile_regex_rules(rules: Sequence[dict[str, str]]) -> list[tuple[re.Pattern[str], str]]:
-    """Compile regex rules into pattern/replacement pairs.
-    
-    Supports both legacy format (pattern/replacement) and new format (search/replace).
-    """
     compiled: list[tuple[re.Pattern[str], str]] = []
     for rule in rules:
-        # Support both legacy (pattern/replacement) and new (search/replace) field names
-        # Use explicit None checks to allow empty strings as valid values
-        pattern = rule.get("pattern") if rule.get("pattern") is not None else rule.get("search")
+        pattern = rule.get("pattern")
         if not pattern:
             continue
-        # For replacement, empty string is a valid value (for deletion)
-        replacement = rule.get("replacement") if rule.get("replacement") is not None else rule.get("replace")
-        if replacement is None:
-            replacement = ""
+        replacement = rule.get("replacement", "")
         try:
             compiled.append((re.compile(pattern), replacement))
         except re.error as exc:
@@ -252,31 +234,9 @@ def _merge_chunks(
     return chunks
 
 
-def _write_results(
-    merged_lines: Sequence[str], 
-    folder: str,
-    compiled_rules: CompiledRegexRules | None = None
-) -> None:
-    """Write sync results to the test folder.
-    
-    If compiled_rules is provided with post-processing rules:
-    - local_result.m3u8: merged_lines processed with local_post rules
-    - remote_result.m3u8: merged_lines processed with remote_post rules
-    - base_next.m3u8: unprocessed merged_lines (normalized sync result)
-    """
-    # Apply post-processing regex rules if provided
-    if compiled_rules and compiled_rules.local_post:
-        local_lines = _apply_compiled_rules_to_paths(merged_lines, compiled_rules.local_post)
-    else:
-        local_lines = list(merged_lines)
-    
-    if compiled_rules and compiled_rules.remote_post:
-        remote_lines = _apply_compiled_rules_to_paths(merged_lines, compiled_rules.remote_post)
-    else:
-        remote_lines = list(merged_lines)
-    
-    _save_playlist_to_folder("local_result.m3u8", local_lines, folder)
-    _save_playlist_to_folder("remote_result.m3u8", remote_lines, folder)
+def _write_results(merged_lines: Sequence[str], folder: str) -> None:
+    _save_playlist_to_folder("local_result.m3u8", merged_lines, folder)
+    _save_playlist_to_folder("remote_result.m3u8", merged_lines, folder)
     _save_playlist_to_folder("base_next.m3u8", merged_lines, folder)
 
 
@@ -419,16 +379,12 @@ def merge_playlists(
     remote_text: str,
     strategy: ConflictResolutionStrategy = ConflictResolutionStrategy.LOCAL_PRIORITY,
     test_folder: str = TEST_PLAYLIST_DIR,
-    compiled_rules: CompiledRegexRules | None = None,
 ) -> MergeResult:
     """Merge playlists using diff3 and resolve conflicts per strategy.
 
     The base, local, and remote normalized playlists are saved into ``test_folder``
     for inspection. The merged playlist is also stored twice to simulate the
     versions intended for local save and cloud upload.
-    
-    If compiled_rules is provided, post-processing regex rules will be applied
-    to the results before writing.
     """
 
     base_paths, local_paths, remote_paths = _normalize_inputs(
@@ -464,7 +420,7 @@ def merge_playlists(
             merged_lines, base_paths, local_paths, remote_paths
         )
 
-    _write_results(merged_lines, test_folder, compiled_rules)
+    _write_results(merged_lines, test_folder)
 
     return MergeResult(merged_paths=merged_lines, conflicts=conflicts)
 
@@ -561,7 +517,6 @@ def _sync_single_playlist(
     remote_text: str,
     playlist_folder: str,
     remote_present: bool,
-    compiled_rules: CompiledRegexRules | None = None,
 ) -> PlaylistSyncResult:
     local_present = local_text is not None
     local_text = local_text or ""
@@ -580,7 +535,7 @@ def _sync_single_playlist(
             base_text, local_text, remote_text, playlist_folder
         )
         merged_lines = list(local_paths)
-        _write_results(merged_lines, playlist_folder, compiled_rules)
+        _write_results(merged_lines, playlist_folder)
         return PlaylistSyncResult(playlist, merged_lines, [], "synced", playlist_folder)
 
     if mode == SyncMode.REMOTE_FORCE:
@@ -592,7 +547,7 @@ def _sync_single_playlist(
             base_text, local_text, remote_text, playlist_folder
         )
         merged_lines = list(remote_paths)
-        _write_results(merged_lines, playlist_folder, compiled_rules)
+        _write_results(merged_lines, playlist_folder)
         return PlaylistSyncResult(playlist, merged_lines, [], "synced", playlist_folder)
 
     if mode not in (SyncMode.MERGE_LOCAL_PRIMARY, SyncMode.MERGE_REMOTE_PRIMARY):
@@ -610,7 +565,6 @@ def _sync_single_playlist(
         remote_text=remote_text,
         strategy=merge_strategy,
         test_folder=playlist_folder,
-        compiled_rules=compiled_rules,
     )
 
     if not merge_result.merged_paths and (not local_present or not remote_present):
@@ -624,153 +578,13 @@ def _sync_single_playlist(
     )
 
 
-def _compile_path_mapping_rules(path_mapping: dict) -> CompiledRegexRules:
-    """Compile regex rules from path_mapping config for all four processing stages."""
-    regex_config = path_mapping.get("regex", {})
-    return CompiledRegexRules(
-        local_pre=_compile_regex_rules(regex_config.get("local_pre", [])),
-        local_post=_compile_regex_rules(regex_config.get("local_post", [])),
-        remote_pre=_compile_regex_rules(regex_config.get("remote_pre", [])),
-        remote_post=_compile_regex_rules(regex_config.get("remote_post", [])),
-    )
-
-
-def _compile_simple_mapping_rules(simple_mappings: list[dict]) -> CompiledRegexRules:
-    """Compile simple mapping pairs into four rule groups using UUID-based mapping_ids.
-    
-    Each simple mapping has:
-    - id: UUID used as the mapping_id (unique identifier to prevent conflicts)
-    - search: Local path prefix
-    - replace: Cloud path prefix
-    
-    This generates four rule sets:
-    - local_pre: Replace local path (search) with mapping_id
-    - remote_pre: Replace cloud path (replace) with mapping_id
-    - local_post: Replace mapping_id with local path (search)
-    - remote_post: Replace mapping_id with cloud path (replace)
-    
-    The mapping_id is wrapped with special markers to prevent conflicts with actual paths.
-    """
-    local_pre_rules: list[dict[str, str]] = []
-    local_post_rules: list[dict[str, str]] = []
-    remote_pre_rules: list[dict[str, str]] = []
-    remote_post_rules: list[dict[str, str]] = []
-    
-    # UUID pattern for validation (accepts standard UUID format with or without hyphens)
-    uuid_pattern = re.compile(r'^[a-fA-F0-9]{8}-?[a-fA-F0-9]{4}-?[a-fA-F0-9]{4}-?[a-fA-F0-9]{4}-?[a-fA-F0-9]{12}$')
-    
-    for mapping in simple_mappings:
-        # Get the mapping values
-        mapping_id = mapping.get("id")
-        local_path = mapping.get("search", "")  # Local path is stored in 'search' field
-        cloud_path = mapping.get("replace", "")  # Cloud path is stored in 'replace' field
-        
-        # Validate mapping_id is a proper UUID to prevent injection attacks
-        if not mapping_id or not isinstance(mapping_id, str):
-            logger.warning(f"Skipping mapping with missing or invalid id: {mapping}")
-            continue
-        
-        if not uuid_pattern.match(mapping_id):
-            logger.warning(f"Skipping mapping with non-UUID id format: {mapping_id}")
-            continue
-        
-        # Paths must be non-empty strings
-        if not local_path or not isinstance(local_path, str):
-            logger.warning(f"Skipping mapping with missing local path: {mapping}")
-            continue
-        
-        if not cloud_path or not isinstance(cloud_path, str):
-            logger.warning(f"Skipping mapping with missing cloud path: {mapping}")
-            continue
-        
-        # Create a unique placeholder using the validated UUID
-        # Using special markers to prevent conflicts with actual paths
-        placeholder = f"__MAPPING__{mapping_id}__"
-        
-        # Pre-processing rules (use re.escape to treat paths as literal strings)
-        # local_pre: Replace local path with placeholder
-        local_pre_rules.append({
-            "pattern": re.escape(local_path),
-            "replacement": placeholder
-        })
-        
-        # remote_pre: Replace cloud path with placeholder
-        remote_pre_rules.append({
-            "pattern": re.escape(cloud_path),
-            "replacement": placeholder
-        })
-        
-        # Post-processing rules
-        # local_post: Replace placeholder with local path
-        local_post_rules.append({
-            "pattern": re.escape(placeholder),
-            "replacement": local_path
-        })
-        
-        # remote_post: Replace placeholder with cloud path
-        remote_post_rules.append({
-            "pattern": re.escape(placeholder),
-            "replacement": cloud_path
-        })
-    
-    logger.info(f"Compiled {len(local_pre_rules)} simple mapping pairs into rules")
-    
-    return CompiledRegexRules(
-        local_pre=_compile_regex_rules(local_pre_rules),
-        local_post=_compile_regex_rules(local_post_rules),
-        remote_pre=_compile_regex_rules(remote_pre_rules),
-        remote_post=_compile_regex_rules(remote_post_rules),
-    )
-
-
 def sync_all_playlists(
     local_dir: str, mode: SyncMode, test_folder: str = TEST_PLAYLIST_DIR
 ) -> list[PlaylistSyncResult]:
-    """Synchronize all playlists that can be matched by name.
-    
-    Path mapping modes:
-    - SIMPLE: Uses UUID-based mapping_ids to convert between local and cloud paths
-      - local_pre: local_path -> mapping_id
-      - remote_pre: cloud_path -> mapping_id
-      - local_post: mapping_id -> local_path
-      - remote_post: mapping_id -> cloud_path
-    
-    - REGEX: Uses custom regex rules for each processing stage
-      - local_pre, local_post, remote_pre, remote_post rules are applied directly
-    
-    Processing flow:
-    1. local_pre rules are applied to local playlists before sync
-    2. remote_pre rules are applied to remote playlists before sync
-    3. Sync/merge is performed
-    4. local_post rules are applied to results before writing to local_result.m3u8
-    5. remote_post rules are applied to results before writing to remote_result.m3u8
-    """
+    """Synchronize all playlists that can be matched by name."""
 
     server_config.load()
-    
-    # Get path_mapping configuration
-    path_mapping = server_config.path_mapping
-    mapping_mode = path_mapping.get("mode", "SIMPLE")
-    
-    # Compile rules based on the mode
-    compiled_rules: CompiledRegexRules | None = None
-    legacy_compiled_rules: list[tuple[re.Pattern[str], str]] = []
-    
-    if mapping_mode == "REGEX":
-        compiled_rules = _compile_path_mapping_rules(path_mapping)
-        logger.info("Using REGEX mode for path mapping with 4 rule groups")
-    elif mapping_mode == "SIMPLE":
-        simple_mappings = path_mapping.get("simple", [])
-        if simple_mappings:
-            compiled_rules = _compile_simple_mapping_rules(simple_mappings)
-            logger.info(f"Using SIMPLE mode for path mapping with {len(simple_mappings)} mapping pairs")
-        else:
-            logger.info("SIMPLE mode with no mappings - no path transformations will be applied")
-    else:
-        # Use legacy path_rules for backward compatibility
-        legacy_compiled_rules = _compile_regex_rules(server_config.path_rules)
-        logger.info("Using legacy path_rules for preprocessing")
-    
+    compiled_rules = _compile_regex_rules(server_config.path_rules)
     _ensure_test_dir(test_folder)
     logger.info(f"Syncing playlists to test folder: {test_folder}")
     local_playlists = _load_local_playlists(local_dir)
@@ -799,29 +613,16 @@ def sync_all_playlists(
             remote_text = snapshot_remote_text
             remote_present = bool(remote_text.strip()) or remote_exists
 
-        if compiled_rules:
-            # Apply pre-processing rules for REGEX or SIMPLE mode
-            # base_text doesn't need pre-processing as it's the normalized state
-            if local_text is not None and compiled_rules.local_pre:
-                local_text = preprocess_playlist_text(
-                    local_text, [], compiled_rules.local_pre
-                )
-            if remote_text and compiled_rules.remote_pre:
-                remote_text = preprocess_playlist_text(
-                    remote_text, [], compiled_rules.remote_pre
-                )
-        elif legacy_compiled_rules:
-            # Use legacy preprocessing for all texts
-            base_text = preprocess_playlist_text(
-                base_text, server_config.path_rules, legacy_compiled_rules
+        base_text = preprocess_playlist_text(
+            base_text, server_config.path_rules, compiled_rules
+        )
+        remote_text = preprocess_playlist_text(
+            remote_text, server_config.path_rules, compiled_rules
+        )
+        if local_text is not None:
+            local_text = preprocess_playlist_text(
+                local_text, server_config.path_rules, compiled_rules
             )
-            remote_text = preprocess_playlist_text(
-                remote_text, server_config.path_rules, legacy_compiled_rules
-            )
-            if local_text is not None:
-                local_text = preprocess_playlist_text(
-                    local_text, server_config.path_rules, legacy_compiled_rules
-                )
 
         # Treat missing remote text as absent playlist.
         result = _sync_single_playlist(
@@ -832,7 +633,6 @@ def sync_all_playlists(
             remote_text=remote_text,
             playlist_folder=playlist_folder,
             remote_present=remote_present,
-            compiled_rules=compiled_rules,
         )
         results.append(result)
 

docker-compose.yml

@@ -5,7 +5,8 @@ services:
     ports:
       - "8888:8080"
     volumes:
-      - path_to_your_playlist:/app/playlist
+      - ./output_playlists:/app/app/test_playlists
+      - ./test_case/local_playlist:/app/playlist:ro
     environment:
       - PYTHONUNBUFFERED=1
       - PYTHONDONTWRITEBYTECODE=1

frontend/App.tsx

@@ -1,5 +1,6 @@
+
 import React, { useEffect, useState, useCallback, useRef } from 'react';
-import { Playlist, ServerType, SyncStrategy, PlexServerConnection, PathMappingConfig, PathMappingMode, PlexConnectionSettings, SyncState, ScheduleSettings, ScheduleMode } from './types';
+import { Playlist, ServerType, SyncStrategy, PlexServerConnection, RegexReplacement, PlexConnectionSettings, SyncState, ScheduleSettings, ScheduleMode } from './types';
 import { apiService } from './services/api';
 import {
   STRIPE_BASE_SPEED,
@@ -9,13 +10,15 @@ import {
   SYNC_SUCCESS_TOTAL_MS,
   SYNC_ERROR_RESET_MS,
   TOAST_AUTO_DISMISS_MS,
-  TOAST_EXIT_DURATION_MS
+  TOAST_EXIT_DURATION_MS,
+  SYNC_BANNER_PADDING_X,
+  SYNC_BANNER_PADDING_Y,
+  SYNC_BANNER_MIN_WIDTH,
 } from './Config';
-import { SYNC_BANNER_PADDING_X, SYNC_BANNER_PADDING_Y, SYNC_BANNER_MIN_WIDTH } from './Config';
 import ServerPanel from './components/ServerPanel';
 import StrategySelector from './components/StrategySelector';
 import ConnectionModal from './components/ConnectionModal';
-import { ArrowLeftRight, ShieldCheck, X, Server, ServerOff, Clock, Eye, EyeOff, Type, Code2 } from 'lucide-react';
+import { ArrowLeftRight, ShieldCheck, X, Server, ServerOff, Clock, Eye, EyeOff } from 'lucide-react';
 
 interface Toast {
   id: number;
@@ -138,17 +141,8 @@ const App: React.FC = () => {
   // Strategy State
   const [currentStrategy, setCurrentStrategy] = useState<SyncStrategy>(SyncStrategy.LOCAL_OVERWRITE);
   
-  // Path Mapping State (Includes Simple and Regex Rules)
-  const [pathMappingConfig, setPathMappingConfig] = useState<PathMappingConfig>({
-    mode: PathMappingMode.SIMPLE,
-    simple: [],
-    regex: {
-      localPre: [],
-      localPost: [],
-      remotePre: [],
-      remotePost: []
-    }
-  });
+  // Regex State
+  const [regexReplacements, setRegexReplacements] = useState<RegexReplacement[]>([]);
 
   // Schedule State
   const [scheduleSettings, setScheduleSettings] = useState<ScheduleSettings>({
@@ -232,7 +226,7 @@ const App: React.FC = () => {
     const result = await apiService.getSettings();
     if (result.status === 'success') {
       setCurrentStrategy(result.data.strategy);
-      setPathMappingConfig(result.data.pathMapping);
+      setRegexReplacements(result.data.regex);
       setLocalPath(result.data.localPath || 'playlist');
       setConnectionSettings(result.data.connection);
     }
@@ -353,14 +347,14 @@ const App: React.FC = () => {
     }
   };
 
-  // Handle Path Mapping Save
-  const handleSavePathMapping = async (config: PathMappingConfig) => {
-    setPathMappingConfig(config);
-    const result = await apiService.savePathMapping(config);
+  // Handle Regex Save
+  const handleSaveRegex = async (replacements: RegexReplacement[]) => {
+    setRegexReplacements(replacements);
+    const result = await apiService.saveRegexRules(replacements);
     if (result.status === 'success') {
-      addToast('Path mapping rules have been saved.');
+      addToast('Regex preprocessing rules have been saved.');
     } else {
-      addToast(result.message || 'Failed to save path mapping rules.');
+      addToast(result.message || 'Failed to save regex rules.');
     }
   };
 
@@ -371,7 +365,7 @@ const App: React.FC = () => {
     setSyncState(SyncState.SYNCING);
     manualSyncInProgress.current = true;
 
-    const result = await apiService.syncPlaylists(currentStrategy, pathMappingConfig, localPath || undefined);
+    const result = await apiService.syncPlaylists(currentStrategy, regexReplacements, localPath || undefined);
 
     manualSyncInProgress.current = false;
 
@@ -519,44 +513,6 @@ const App: React.FC = () => {
 
   const scheduleInfo = getScheduleDisplayInfo();
 
-  // Helper: Calculate Path Mapping Info
-  const getPathMappingDisplayInfo = (config: PathMappingConfig) => {
-    let count = 0;
-    let modeLabel = '';
-    let Icon = Type;
-
-    if (config.mode === PathMappingMode.SIMPLE) {
-        modeLabel = 'Simple';
-        count = config.simple.length;
-        Icon = Type;
-    } else {
-        modeLabel = 'Regex';
-        count = config.regex.localPre.length +
-                config.regex.localPost.length + 
-                config.regex.remotePre.length + 
-                config.regex.remotePost.length;
-        Icon = Code2;
-    }
-
-    if (count === 0) {
-        return {
-            label: 'Path Mapping',
-            value: 'Not Set',
-            active: false,
-            Icon: Icon
-        };
-    }
-
-    return {
-        label: 'Path Mapping',
-        value: `${modeLabel} (${count})`,
-        active: true,
-        Icon: Icon
-    };
-  };
-
-  const pathMappingInfo = getPathMappingDisplayInfo(pathMappingConfig);
-
   return (
     <div className="min-h-screen flex flex-col bg-gray-900 text-gray-100 font-sans overflow-hidden bg-[radial-gradient(ellipse_at_top,_var(--tw-gradient-stops))] from-gray-800 via-gray-900 to-black">
       
@@ -618,7 +574,7 @@ const App: React.FC = () => {
 
           {syncState === SyncState.IDLE ? (
             <>
-              {/* Normal Toolbar Left */}
+              {/* Normal Toolbar */}
               <div className="flex items-center space-x-3">
                 <div className="p-1.5 rounded-lg shadow-lg bg-gradient-to-br from-plex-orange to-yellow-600 text-gray-900 shadow-plex-orange/20">
                    <ArrowLeftRight size={24} strokeWidth={2.5} />
@@ -630,17 +586,6 @@ const App: React.FC = () => {
 
               {/* Normal Toolbar Right */}
               <div className="flex items-center gap-4">
-                  {/* Path Mapping Info */}
-                  <div className="flex flex-col items-end hidden md:flex border-r border-gray-700/50 pr-4 mr-1">
-                     <span className="text-[10px] uppercase font-bold text-gray-500 tracking-wider">
-                       {pathMappingInfo.label}
-                     </span>
-                     <div className={`text-xs font-mono flex items-center gap-1.5 ${pathMappingInfo.active ? 'text-plex-orange' : 'text-gray-600'}`}>
-                        {pathMappingInfo.active && <pathMappingInfo.Icon size={12} />}
-                        <span>{pathMappingInfo.value}</span>
-                     </div>
-                  </div>
-
                   {/* Schedule Info */}
                   <div className="flex flex-col items-end mr-2 md:mr-0 hidden md:flex">
                      <span className="text-[10px] uppercase font-bold text-gray-500 tracking-wider">
@@ -680,7 +625,6 @@ const App: React.FC = () => {
               </div>
             </>
           ) : (
-            /* Syncing / Success Text Banner */
             <div className="absolute inset-0 flex items-center justify-center pointer-events-none z-10">
                <div
                  className="bg-black shadow-none rounded-none border-none"
@@ -747,8 +691,8 @@ const App: React.FC = () => {
               <StrategySelector 
                 currentStrategy={currentStrategy}
                 onSelect={handleStrategyChange}
-                savedPathMapping={pathMappingConfig}
-                onSavePathMapping={handleSavePathMapping}
+                savedRegexReplacements={regexReplacements}
+                onSaveRegex={handleSaveRegex}
                 savedSchedule={scheduleSettings}
                 onSaveSchedule={handleSaveSchedule}
                 syncState={syncState}

frontend/components/StrategySelector.tsx

@@ -1,5 +1,5 @@
 import React, { useState, useRef, useEffect } from 'react';
-import { SyncStrategy, ReplacementRule, PathMappingConfig, PathMappingRules, PathMappingMode, SyncState, ScheduleSettings, ScheduleMode } from '../types';
+import { SyncStrategy, RegexReplacement, SyncState, ScheduleSettings, ScheduleMode } from '../types';
 import { 
   ArrowRightCircle, 
   ArrowLeftCircle, 
@@ -17,9 +17,7 @@ import {
   Clock,
   Repeat,
   CheckSquare,
-  Square,
-  Type,
-  Code2
+  Square
 } from 'lucide-react';
 
 interface StrategyOption {
@@ -63,29 +61,6 @@ const STRATEGIES: StrategyOption[] = [
 
 const WEEK_DAYS = ['S', 'M', 'T', 'W', 'T', 'F', 'S'];
 
-// Color Theme Variables for Mapping Editors
-const MAPPING_THEME = {
-  // Container Themes
-  local: {
-    borderColor: "border-blue-500/20",
-    bgColor: "bg-blue-900/10"
-  },
-  remote: {
-    borderColor: "border-green-500/20",
-    bgColor: "bg-green-900/10"
-  },
-  simple: {
-    borderColor: "border-gray-700/50",
-    bgColor: "bg-gray-900/40"
-  },
-  // Input Field Themes
-  inputs: {
-    default: "bg-gray-800 border-gray-700 text-gray-200 focus:border-plex-orange placeholder-gray-600",
-    local: "bg-blue-500/10 border-blue-500/30 text-blue-100 focus:border-blue-400 placeholder-blue-300/30",
-    cloud: "bg-green-500/10 border-green-500/30 text-green-100 focus:border-green-400 placeholder-green-300/30"
-  }
-};
-
 // Helper to determine the actual mode and settings that would be saved based on the current UI state
 const deriveEffectiveSchedule = (schedule: ScheduleSettings, tab: ScheduleMode): ScheduleSettings => {
   const derived = { ...schedule };
@@ -105,114 +80,11 @@ const deriveEffectiveSchedule = (schedule: ScheduleSettings, tab: ScheduleMode):
   return derived;
 };
 
-// Sub-component for a single Mapping Group Editor
-interface MappingGroupEditorProps {
-  title: string;
-  subtitle?: string;
-  rules: ReplacementRule[];
-  onChange: (newRules: ReplacementRule[]) => void;
-  isLocked: boolean;
-  borderColor?: string;
-  bgColor?: string;
-  // Input specific props
-  leftPlaceholder?: string;
-  rightPlaceholder?: string;
-  leftInputClass?: string;
-  rightInputClass?: string;
-}
-
-const MappingGroupEditor: React.FC<MappingGroupEditorProps> = ({ 
-  title, 
-  subtitle, 
-  rules, 
-  onChange, 
-  isLocked,
-  borderColor = "border-gray-700",
-  bgColor = "bg-gray-900/50",
-  leftPlaceholder = "Pattern",
-  rightPlaceholder = "Replace",
-  leftInputClass,
-  rightInputClass
-}) => {
-  
-  const handleAdd = () => {
-    if (isLocked) return;
-    const newId = Date.now().toString() + Math.random().toString();
-    onChange([...rules, { id: newId, search: '', replace: '' }]);
-  };
-
-  const handleUpdate = (id: string, field: 'search' | 'replace', value: string) => {
-    if (isLocked) return;
-    onChange(rules.map(r => r.id === id ? { ...r, [field]: value } : r));
-  };
-
-  const handleDelete = (id: string) => {
-    if (isLocked) return;
-    onChange(rules.filter(r => r.id !== id));
-  };
-
-  // Default input style if not provided
-  const defaultInputStyle = MAPPING_THEME.inputs.default;
-
-  return (
-    <div className={`p-3 rounded-lg border ${borderColor} ${bgColor} flex flex-col h-full transition-colors`}>
-       <div className="flex items-center justify-between mb-2">
-         <div>
-            <h4 className="text-[10px] font-bold uppercase tracking-wider text-gray-400">{title}</h4>
-            {subtitle && <p className="text-[9px] text-gray-500">{subtitle}</p>}
-         </div>
-         <button 
-           onClick={handleAdd}
-           disabled={isLocked}
-           className="p-1 rounded bg-gray-700/50 hover:bg-gray-600 text-gray-400 hover:text-white transition-colors"
-           title="Add Rule"
-         >
-           <Plus size={12} />
-         </button>
-       </div>
-
-       <div className="flex-1 space-y-2 overflow-y-auto max-h-32 custom-scrollbar pr-1">
-         {rules.length === 0 ? (
-           <div className="text-xs text-gray-600 italic text-center py-2 border border-dashed border-gray-700/50 rounded-lg">
-             No rules defined.
-           </div>
-         ) : (
-           rules.map((rule) => (
-             <div key={rule.id} className="flex items-center space-x-1 animate-in slide-in-from-left-1 duration-200">
-                <input 
-                  type="text" 
-                  placeholder={leftPlaceholder}
-                  value={rule.search}
-                  onChange={(e) => handleUpdate(rule.id, 'search', e.target.value)}
-                  className={`flex-1 min-w-0 border rounded px-1.5 py-1 text-xs focus:outline-none transition-colors ${leftInputClass || defaultInputStyle}`}
-                />
-                <ArrowRightCircle size={10} className="text-gray-600 flex-none opacity-50" />
-                <input 
-                  type="text" 
-                  placeholder={rightPlaceholder}
-                  value={rule.replace}
-                  onChange={(e) => handleUpdate(rule.id, 'replace', e.target.value)}
-                  className={`flex-1 min-w-0 border rounded px-1.5 py-1 text-xs focus:outline-none transition-colors ${rightInputClass || defaultInputStyle}`}
-                />
-                <button 
-                  onClick={() => handleDelete(rule.id)}
-                  className="text-gray-600 hover:text-red-400 p-1 rounded hover:bg-red-500/10 transition-colors flex-none"
-                >
-                  <Trash2 size={12} />
-                </button>
-             </div>
-           ))
-         )}
-       </div>
-    </div>
-  );
-};
-
 interface StrategySelectorProps {
   currentStrategy: SyncStrategy;
   onSelect: (strategy: SyncStrategy, label: string) => void;
-  savedPathMapping: PathMappingConfig;
-  onSavePathMapping: (config: PathMappingConfig) => void;
+  savedRegexReplacements: RegexReplacement[];
+  onSaveRegex: (replacements: RegexReplacement[]) => void;
   savedSchedule: ScheduleSettings;
   onSaveSchedule: (settings: ScheduleSettings) => Promise<boolean>;
   syncState: SyncState;
@@ -222,8 +94,8 @@ interface StrategySelectorProps {
 const StrategySelector: React.FC<StrategySelectorProps> = ({ 
   currentStrategy, 
   onSelect, 
-  savedPathMapping, 
-  onSavePathMapping,
+  savedRegexReplacements, 
+  onSaveRegex,
   savedSchedule,
   onSaveSchedule,
   syncState,
@@ -232,16 +104,17 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
   const [isOpen, setIsOpen] = useState(false);
   const dropdownRef = useRef<HTMLDivElement>(null);
 
-  // Local state for path mapping editing (stores all lists for both modes)
-  const [localPathMapping, setLocalPathMapping] = useState<PathMappingConfig>(savedPathMapping);
-  const [isMappingDirty, setIsMappingDirty] = useState(false);
+  // Local state for regex editing
+  const [localReplacements, setLocalReplacements] = useState<RegexReplacement[]>([]);
+  const [isRegexDirty, setIsRegexDirty] = useState(false);
 
   // Local state for Schedule editing
   const [localSchedule, setLocalSchedule] = useState<ScheduleSettings>(savedSchedule);
   const [isScheduleDirty, setIsScheduleDirty] = useState(false);
   
   // UI State for Schedule Tabs
-  const [activeScheduleTab, setActiveScheduleTab] = useState<ScheduleMode>(
+  // We initialize active tab based on the saved mode. If DISABLED, default to CRON.
+  const [activeTab, setActiveTab] = useState<ScheduleMode>(
     savedSchedule.mode === ScheduleMode.DISABLED ? ScheduleMode.CRON : savedSchedule.mode
   );
 
@@ -250,30 +123,32 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
 
   // Initialize local state when prop updates
   useEffect(() => {
-    setLocalPathMapping(JSON.parse(JSON.stringify(savedPathMapping)));
-    setIsMappingDirty(false);
-  }, [savedPathMapping]);
+    setLocalReplacements(JSON.parse(JSON.stringify(savedRegexReplacements)));
+    setIsRegexDirty(false);
+  }, [savedRegexReplacements]);
 
   useEffect(() => {
     setLocalSchedule(JSON.parse(JSON.stringify(savedSchedule)));
+    // If the saved mode is not disabled, ensure we show that tab.
     if (savedSchedule.mode !== ScheduleMode.DISABLED) {
-      setActiveScheduleTab(savedSchedule.mode);
+      setActiveTab(savedSchedule.mode);
     }
     setIsScheduleDirty(false);
   }, [savedSchedule]);
 
-  // Check dirty state whenever local mapping changes
+  // Check dirty state whenever local changes
   useEffect(() => {
-    const isDifferent = JSON.stringify(localPathMapping) !== JSON.stringify(savedPathMapping);
-    setIsMappingDirty(isDifferent);
-  }, [localPathMapping, savedPathMapping]);
+    const isDifferent = JSON.stringify(localReplacements) !== JSON.stringify(savedRegexReplacements);
+    setIsRegexDirty(isDifferent);
+  }, [localReplacements, savedRegexReplacements]);
 
   // Check dirty state for Schedule (including Active Tab changes)
   useEffect(() => {
-    const effectiveLocal = deriveEffectiveSchedule(localSchedule, activeScheduleTab);
+    // We calculate what the "effective" schedule would be if we saved right now.
+    const effectiveLocal = deriveEffectiveSchedule(localSchedule, activeTab);
     const isDifferent = JSON.stringify(effectiveLocal) !== JSON.stringify(savedSchedule);
     setIsScheduleDirty(isDifferent);
-  }, [localSchedule, savedSchedule, activeScheduleTab]);
+  }, [localSchedule, savedSchedule, activeTab]);
 
   const selectedOption = STRATEGIES.find(s => s.value === currentStrategy) || STRATEGIES[0];
 
@@ -287,70 +162,47 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
     return () => document.removeEventListener('mousedown', handleClickOutside);
   }, []);
 
-  const isScheduleActionable = isScheduleDirty || (activeScheduleTab !== (savedSchedule.mode === ScheduleMode.DISABLED ? ScheduleMode.CRON : savedSchedule.mode));
+  // Determine if tabs have changed from the saved state
+  const initialTab = savedSchedule.mode === ScheduleMode.DISABLED ? ScheduleMode.CRON : savedSchedule.mode;
+  const hasTabChanged = activeTab !== initialTab;
+  const isScheduleActionable = isScheduleDirty || hasTabChanged;
 
   const handleSelect = (strategy: StrategyOption) => {
     if (isLocked) return;
     onSelect(strategy.value, strategy.label);
   };
 
-  // --- Path Mapping Handlers ---
-  const currentMappingMode = localPathMapping.mode;
-  
-  const updateRegexGroup = (section: keyof PathMappingRules, newRules: ReplacementRule[]) => {
+  // --- Regex Handlers ---
+  const handleAddRegex = () => {
     if (isLocked) return;
-    setLocalPathMapping(prev => ({
-      ...prev,
-      regex: {
-        ...prev.regex,
-        [section]: newRules
-      }
-    }));
+    const newId = Date.now().toString();
+    setLocalReplacements(prev => [...prev, { id: newId, pattern: '', replacement: '' }]);
   };
 
-  const updateSimpleGroup = (newRules: ReplacementRule[]) => {
+  const handleDeleteRegex = (id: string) => {
     if (isLocked) return;
-    setLocalPathMapping(prev => ({
-      ...prev,
-      simple: newRules
-    }));
+    setLocalReplacements(prev => prev.filter(r => r.id !== id));
   };
 
-  const setMappingMode = (mode: PathMappingMode) => {
+  const handleUpdateRegex = (id: string, field: 'pattern' | 'replacement', value: string) => {
     if (isLocked) return;
-    setLocalPathMapping(prev => ({ ...prev, mode }));
+    setLocalReplacements(prev => prev.map(r => 
+      r.id === id ? { ...r, [field]: value } : r
+    ));
   };
 
-  const handleResetMapping = () => {
+  const handleResetRegex = () => {
     if (isLocked) return;
-    setLocalPathMapping(JSON.parse(JSON.stringify(savedPathMapping)));
+    setLocalReplacements(JSON.parse(JSON.stringify(savedRegexReplacements)));
   };
 
-  const handleSaveMappingClick = () => {
+  const handleSaveRegex = () => {
     if (isLocked) return;
-    const clean = (rules: ReplacementRule[]) => rules.filter(r => r.search.trim() !== '');
-    
-    // Clean regex rules
-    const cleanRegex = (rules: PathMappingRules): PathMappingRules => ({
-      localPre: clean(rules.localPre),
-      localPost: clean(rules.localPost),
-      remotePre: clean(rules.remotePre),
-      remotePost: clean(rules.remotePost),
-    });
-
-    const cleanedConfig: PathMappingConfig = {
-      mode: localPathMapping.mode,
-      simple: clean(localPathMapping.simple),
-      regex: cleanRegex(localPathMapping.regex),
-    };
-
-    setLocalPathMapping(cleanedConfig);
-    onSavePathMapping(cleanedConfig);
+    const validReplacements = localReplacements.filter(r => r.pattern.trim() !== '');
+    setLocalReplacements(validReplacements);
+    onSaveRegex(validReplacements);
   };
 
-  const regexRules = localPathMapping.regex;
-  const simpleRules = localPathMapping.simple;
-
   // --- Schedule Handlers ---
   const handleUpdateSchedule = (field: keyof ScheduleSettings, value: any) => {
     if (isLocked) return;
@@ -370,18 +222,24 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
     if (isLocked) return;
     setLocalSchedule(JSON.parse(JSON.stringify(savedSchedule)));
     if (savedSchedule.mode !== ScheduleMode.DISABLED) {
-      setActiveScheduleTab(savedSchedule.mode);
+      setActiveTab(savedSchedule.mode);
     } else {
-      setActiveScheduleTab(ScheduleMode.CRON);
+      setActiveTab(ScheduleMode.CRON);
     }
   };
 
   const handleSaveScheduleClick = async () => {
     if (isLocked) return;
-    const settingsToSave = deriveEffectiveSchedule(localSchedule, activeScheduleTab);
+    
+    // Determine the effective settings based on the current view (tab) and inputs
+    const settingsToSave = deriveEffectiveSchedule(localSchedule, activeTab);
+    
+    // Call API
     const success = await onSaveSchedule(settingsToSave);
     if (success) {
       setLocalSchedule(settingsToSave);
+      // Dirty state is cleared by the useEffect prop update, or we can clear it optimistically here if needed,
+      // but useEffect [savedSchedule] handles it correctly.
     }
   };
 
@@ -390,6 +248,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
     onSync();
   };
 
+  // Helper to toggle enable/disable for current active tab (Daily/Weekly)
   const toggleScheduleEnable = (targetMode: ScheduleMode) => {
       if (isLocked) return;
       if (localSchedule.mode === targetMode) {
@@ -399,6 +258,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
       }
   };
 
+  // If syncing or locked, apply grayscale filter to content sections
   const contentClass = isLocked ? "opacity-50 pointer-events-none grayscale transition-all" : "transition-all";
 
   return (
@@ -419,13 +279,12 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
       <div 
         className={`absolute 
           top-14 
-          /* Mobile: Open to left (max width of screen) */
-          right-0 w-[90vw] max-w-[90vw] origin-top-right
+          /* Mobile: Open to left */
+          right-0 origin-top-right
+          /* Desktop: Center alignment */
+          md:left-1/2 md:right-auto md:origin-top md:-translate-x-1/2 
           
-          /* Desktop: Center alignment, wider */
-          md:left-1/2 md:right-auto md:origin-top md:-translate-x-1/2 md:w-[60rem] md:max-w-[60rem]
-          
-          bg-gray-800/95 border border-white/10 rounded-xl shadow-2xl z-50 overflow-hidden backdrop-blur-xl
+          w-80 md:w-[32rem] bg-gray-800/95 border border-white/10 rounded-xl shadow-2xl z-50 overflow-hidden backdrop-blur-xl
           transition-all duration-200 ease-out
           ${isOpen ? 'opacity-100 scale-100 visible translate-y-0' : 'opacity-0 scale-95 invisible pointer-events-none -translate-y-2'}`}
       >
@@ -469,123 +328,96 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
             </div>
             </div>
 
-            {/* Section 2: Path Mapping (Tabs + Grid) */}
+            {/* Section 2: Regex Preprocessing */}
             <div className="p-4 bg-gray-900/40 border-b border-white/5 flex-none">
                 <div className="flex items-center justify-between mb-3">
-                    <h3 className="text-[10px] font-bold text-gray-500 uppercase tracking-widest">Path Mapping</h3>
-                </div>
-
-                {/* Tabs for Path Mapping Mode */}
-                <div className="flex space-x-1 bg-black/30 p-1 rounded-lg mb-4">
-                  {[
-                    { id: PathMappingMode.SIMPLE, label: 'Simple Mapping', icon: Type },
-                    { id: PathMappingMode.REGEX, label: 'Regex Rules', icon: Code2 },
-                  ].map((tab) => (
-                    <button
-                      key={tab.id}
-                      onClick={() => setMappingMode(tab.id)}
-                      className={`flex-1 flex items-center justify-center space-x-2 py-1.5 rounded-md text-xs font-medium transition-all
-                        ${currentMappingMode === tab.id 
-                          ? 'bg-gray-700 text-plex-orange shadow-sm' 
-                          : 'text-gray-400 hover:text-gray-200 hover:bg-white/5'
-                        }`}
-                    >
-                        <tab.icon size={12} />
-                        <span>{tab.label}</span>
-                    </button>
-                  ))}
-                </div>
-
-                {/* Content Area */}
-                <div className="mb-4">
-                    {currentMappingMode === PathMappingMode.SIMPLE ? (
-                       // Simple Mode: Single Editor
-                       <div className="animate-in fade-in duration-200">
-                          <MappingGroupEditor 
-                             title="Path Mapping"
-                             subtitle="Map Local paths to Cloud paths using simple string matching"
-                             rules={simpleRules}
-                             onChange={updateSimpleGroup}
-                             isLocked={isLocked}
-                             borderColor={MAPPING_THEME.simple.borderColor}
-                             bgColor={MAPPING_THEME.simple.bgColor}
-                             leftPlaceholder="Local Path"
-                             rightPlaceholder="Cloud Path"
-                             leftInputClass={MAPPING_THEME.inputs.local}
-                             rightInputClass={MAPPING_THEME.inputs.cloud}
-                          />
-                       </div>
-                    ) : (
-                       // Regex Mode: 2x2 Grid
-                       <div className="grid grid-cols-1 md:grid-cols-2 gap-4 animate-in fade-in duration-200">
-                          {/* Row 1: Pre-Processing */}
-                          <MappingGroupEditor 
-                             title="Local Playlist"
-                             subtitle="Pre-Processing (Before Sync)"
-                             rules={regexRules.localPre}
-                             onChange={(rules) => updateRegexGroup('localPre', rules)}
-                             isLocked={isLocked}
-                             borderColor={MAPPING_THEME.local.borderColor}
-                             bgColor={MAPPING_THEME.local.bgColor}
-                          />
-
-                          <MappingGroupEditor 
-                             title="Remote Playlist"
-                             subtitle="Pre-Processing (Before Sync)"
-                             rules={regexRules.remotePre}
-                             onChange={(rules) => updateRegexGroup('remotePre', rules)}
-                             isLocked={isLocked}
-                             borderColor={MAPPING_THEME.remote.borderColor}
-                             bgColor={MAPPING_THEME.remote.bgColor}
-                          />
-
-                          {/* Row 2: Post-Processing */}
-                          <MappingGroupEditor 
-                             title="Local Playlist"
-                             subtitle="Post-Processing (After Sync / Result)"
-                             rules={regexRules.localPost}
-                             onChange={(rules) => updateRegexGroup('localPost', rules)}
-                             isLocked={isLocked}
-                             borderColor={MAPPING_THEME.local.borderColor}
-                             bgColor={MAPPING_THEME.local.bgColor}
-                          />
-
-                          <MappingGroupEditor 
-                             title="Remote Playlist"
-                             subtitle="Post-Processing (After Sync / Result)"
-                             rules={regexRules.remotePost}
-                             onChange={(rules) => updateRegexGroup('remotePost', rules)}
-                             isLocked={isLocked}
-                             borderColor={MAPPING_THEME.remote.borderColor}
-                             bgColor={MAPPING_THEME.remote.bgColor}
-                          />
-                       </div>
+                    <h3 className="text-[10px] font-bold text-gray-500 uppercase tracking-widest">Regex Rules</h3>
+                    {localReplacements.length === 0 && (
+                        <button 
+                        onClick={handleAddRegex}
+                        className="p-1 rounded bg-gray-700/50 hover:bg-gray-600 text-gray-400 hover:text-white transition-colors"
+                        title="Add Rule"
+                        >
+                        <Plus size={14} />
+                        </button>
                     )}
                 </div>
 
-                <div className="flex justify-end items-center gap-2">
-                    <button
-                        onClick={handleResetMapping}
-                        disabled={!isMappingDirty}
-                        className={`flex items-center justify-center space-x-1.5 px-3 py-1.5 rounded-md text-xs font-medium border transition-all
-                        ${isMappingDirty 
-                            ? 'bg-gray-800 border-gray-600 text-gray-300 hover:bg-gray-700 hover:text-white' 
-                            : 'bg-transparent border-transparent text-gray-700 cursor-not-allowed'}`}
-                    >
-                        <RotateCcw size={12} />
-                        <span>Revert</span>
-                    </button>
-                    <button
-                        onClick={handleSaveMappingClick}
-                        disabled={!isMappingDirty}
-                        className={`flex items-center justify-center space-x-1.5 px-3 py-1.5 rounded-md text-xs font-bold border transition-all
-                        ${isMappingDirty 
-                            ? 'bg-plex-orange border-plex-orange text-gray-900 hover:bg-yellow-500 shadow-lg shadow-plex-orange/10' 
-                            : 'bg-gray-800/30 border-gray-800/50 text-gray-600 cursor-not-allowed'}`}
-                    >
-                        <Save size={12} />
-                        <span>Save Rules</span>
+                <div className="space-y-2 mb-4 max-h-40 overflow-y-auto pr-1 custom-scrollbar">
+                {localReplacements.length === 0 ? (
+                    <div className="text-xs text-gray-600 italic text-center py-2 border border-dashed border-gray-700/50 rounded-lg">
+                        No regex replacements configured.
+                    </div>
+                ) : (
+                    localReplacements.map((regex) => (
+                    <div key={regex.id} className="flex items-center space-x-2 animate-in slide-in-from-left-2 duration-200">
+                        <div className="flex-1 min-w-0">
+                            <input 
+                                type="text" 
+                                placeholder="Pattern" 
+                                value={regex.pattern}
+                                onChange={(e) => handleUpdateRegex(regex.id, 'pattern', e.target.value)}
+                                className={`w-full bg-gray-900/80 border rounded-md px-2 py-1.5 text-xs text-gray-200 focus:outline-none focus:ring-1 transition-all placeholder-gray-600
+                                ${!regex.pattern && isRegexDirty ? 'border-red-500/30 focus:border-red-500' : 'border-gray-700 focus:border-plex-orange'}`}
+                            />
+                        </div>
+                        <div className="flex-none text-gray-600">
+                            <ArrowRightCircle size={12} />
+                        </div>
+                        <div className="flex-1 min-w-0">
+                            <input 
+                                type="text" 
+                                placeholder="Replacement" 
+                                value={regex.replacement}
+                                onChange={(e) => handleUpdateRegex(regex.id, 'replacement', e.target.value)}
+                                className="w-full bg-gray-900/80 border border-gray-700 rounded-md px-2 py-1.5 text-xs text-gray-200 focus:outline-none focus:border-plex-orange focus:ring-1 focus:ring-plex-orange transition-all placeholder-gray-600"
+                            />
+                        </div>
+                        <button 
+                            onClick={() => handleDeleteRegex(regex.id)}
+                            className="text-gray-600 hover:text-red-400 p-1.5 hover:bg-red-500/10 rounded transition-colors"
+                            title="Delete Rule"
+                        >
+                            <Trash2 size={14} />
+                        </button>
+                    </div>
+                    ))
+                )}
+                </div>
+
+                <div className="flex justify-between items-center gap-2">
+                     <button 
+                            onClick={handleAddRegex}
+                            className={`flex items-center space-x-1 px-2 py-1 rounded text-[10px] font-bold uppercase tracking-wide transition-colors ${localReplacements.length > 0 ? 'text-plex-orange hover:bg-plex-orange/10' : 'hidden'}`}
+                        >
+                            <Plus size={10} />
+                            <span>Add</span>
                     </button>
+
+                    <div className="flex items-center gap-2 ml-auto">
+                        <button
+                            onClick={handleResetRegex}
+                            disabled={!isRegexDirty}
+                            className={`flex items-center justify-center space-x-1.5 px-3 py-1.5 rounded-md text-xs font-medium border transition-all
+                            ${isRegexDirty 
+                                ? 'bg-gray-800 border-gray-600 text-gray-300 hover:bg-gray-700 hover:text-white' 
+                                : 'bg-transparent border-transparent text-gray-700 cursor-not-allowed'}`}
+                        >
+                            <RotateCcw size={12} />
+                            <span>Revert</span>
+                        </button>
+                        <button
+                            onClick={handleSaveRegex}
+                            disabled={!isRegexDirty}
+                            className={`flex items-center justify-center space-x-1.5 px-3 py-1.5 rounded-md text-xs font-bold border transition-all
+                            ${isRegexDirty 
+                                ? 'bg-plex-orange border-plex-orange text-gray-900 hover:bg-yellow-500 shadow-lg shadow-plex-orange/10' 
+                                : 'bg-gray-800/30 border-gray-800/50 text-gray-600 cursor-not-allowed'}`}
+                        >
+                            <Save size={12} />
+                            <span>Save</span>
+                        </button>
+                    </div>
                 </div>
             </div>
 
@@ -604,9 +436,9 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
                     ].map((tab) => (
                       <button
                         key={tab.id}
-                        onClick={() => setActiveScheduleTab(tab.id)}
+                        onClick={() => setActiveTab(tab.id)}
                         className={`flex-1 flex items-center justify-center space-x-2 py-1.5 rounded-md text-xs font-medium transition-all
-                          ${activeScheduleTab === tab.id 
+                          ${activeTab === tab.id 
                             ? 'bg-gray-700 text-plex-orange shadow-sm' 
                             : 'text-gray-400 hover:text-gray-200 hover:bg-white/5'
                           }`}
@@ -619,7 +451,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
 
                  {/* Tab Content */}
                  <div className="mb-4 min-h-[50px]">
-                    {activeScheduleTab === ScheduleMode.CRON && (
+                    {activeTab === ScheduleMode.CRON && (
                       <div className="space-y-2 animate-in fade-in duration-200">
                          <div className="flex items-center space-x-2">
                            <span className="text-gray-500 font-mono text-xs">Cron:</span>
@@ -637,7 +469,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
                       </div>
                     )}
 
-                    {activeScheduleTab === ScheduleMode.DAILY && (
+                    {activeTab === ScheduleMode.DAILY && (
                        <div className="flex flex-col animate-in fade-in duration-200">
                           {/* Top Row: Checkbox + Label */}
                           <div className="flex items-center justify-start space-x-2 mb-2">
@@ -664,7 +496,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
                        </div>
                     )}
 
-                    {activeScheduleTab === ScheduleMode.WEEKLY && (
+                    {activeTab === ScheduleMode.WEEKLY && (
                        <div className="flex flex-col animate-in fade-in duration-200">
                           {/* Top Row: Checkbox + Label */}
                           <div className="flex items-center justify-start space-x-2 mb-2">
@@ -731,7 +563,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
                     </button>
                  </div>
 
-                 {/* Action Buttons */}
+                 {/* Action Buttons (Mirrored from Regex) */}
                  <div className="flex items-center gap-2 justify-end pt-3 border-t border-white/5">
                         <button
                             onClick={handleResetSchedule}
@@ -767,7 +599,7 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
                 className={`w-full py-3 rounded-lg text-sm font-bold flex items-center justify-center gap-2 transition-all shadow-lg
                 ${isLocked 
                     ? 'bg-gray-700/30 text-gray-500 cursor-not-allowed border border-gray-700/50' 
-                    : isMappingDirty
+                    : isRegexDirty
                         ? 'bg-gray-800 text-gray-500 cursor-not-allowed border border-gray-700'
                         : 'bg-green-600 hover:bg-green-500 text-white border border-green-500 shadow-green-900/20 active:scale-[0.98]'
                 }`}
@@ -784,9 +616,9 @@ const StrategySelector: React.FC<StrategySelectorProps> = ({
                     </>
                 )}
             </button>
-            {(isMappingDirty) && (
+            {(isRegexDirty) && (
                 <p className="text-[10px] text-plex-orange text-center mt-2">
-                    Please save path mapping changes before syncing.
+                    Please save regex changes before syncing.
                 </p>
             )}
         </div>

frontend/services/api.ts

@@ -1,4 +1,4 @@
-import { Playlist, ServerType, ApiResponse, PlexServerConnection, PlexConnectionSettings, PlexLibrary, ReplacementRule, PathMappingConfig, PathMappingMode, PathMappingRules, SyncStrategy, ScheduleSettings } from '../types';
+import { Playlist, ServerType, ApiResponse, PlexServerConnection, PlexConnectionSettings, PlexLibrary, RegexReplacement, SyncStrategy, ScheduleSettings } from '../types';
 
 const API_BASE = import.meta.env.VITE_API_BASE_URL || '';
 
@@ -41,69 +41,21 @@ const mapLibrary = (item: any): PlexLibrary => ({
   type: item.type ?? 'artist',
 });
 
-// Helper function to map raw rules array to ReplacementRule[]
-const mapReplacementRules = (rules: any[]): ReplacementRule[] =>
+const mapRegexRules = (rules: any[]): RegexReplacement[] =>
   (rules || []).map((rule, index) => ({
-    id: rule.id || `${rule.search || 'rule'}-${index}-${Date.now()}`,
-    search: rule.search || rule.pattern || '',
-    replace: rule.replace || rule.replacement || '',
+    id: rule.id || `${rule.pattern || 'rule'}-${index}`,
+    pattern: rule.pattern || '',
+    replacement: rule.replacement || '',
   }));
 
-// Helper function to map API path_mapping response to PathMappingConfig
-const mapPathMappingConfig = (data: any): PathMappingConfig => {
-  const defaultConfig: PathMappingConfig = {
-    mode: PathMappingMode.SIMPLE,
-    simple: [],
-    regex: {
-      localPre: [],
-      localPost: [],
-      remotePre: [],
-      remotePost: []
-    }
-  };
-
-  if (!data || !data.path_mapping) {
-    return defaultConfig;
-  }
-
-  const pm = data.path_mapping;
-  return {
-    mode: pm.mode === 'REGEX' ? PathMappingMode.REGEX : PathMappingMode.SIMPLE,
-    simple: mapReplacementRules(pm.simple || []),
-    regex: {
-      localPre: mapReplacementRules(pm.regex?.localPre || pm.regex?.local_pre || []),
-      localPost: mapReplacementRules(pm.regex?.localPost || pm.regex?.local_post || []),
-      remotePre: mapReplacementRules(pm.regex?.remotePre || pm.regex?.remote_pre || []),
-      remotePost: mapReplacementRules(pm.regex?.remotePost || pm.regex?.remote_post || [])
-    }
-  };
-};
-
-// Helper function to convert PathMappingConfig to API format
-const pathMappingToApi = (config: PathMappingConfig) => {
-  const rulesToApi = (rules: ReplacementRule[]) =>
-    rules.map(({ search, replace }) => ({ search, replace }));
-
-  return {
-    mode: config.mode,
-    simple: rulesToApi(config.simple),
-    regex: {
-      local_pre: rulesToApi(config.regex.localPre),
-      local_post: rulesToApi(config.regex.localPost),
-      remote_pre: rulesToApi(config.regex.remotePre),
-      remote_post: rulesToApi(config.regex.remotePost)
-    }
-  };
-};
-
 export const apiService = {
-  async getSettings(): Promise<ApiResponse<{ strategy: SyncStrategy; pathMapping: PathMappingConfig; connection: PlexConnectionSettings; localPath: string }>> {
+  async getSettings(): Promise<ApiResponse<{ strategy: SyncStrategy; regex: RegexReplacement[]; connection: PlexConnectionSettings; localPath: string }>> {
     const response = await fetch(`${API_BASE}/api/settings`);
     const result = await handleResponse<any>(response);
     if (result.status === 'success') {
       const mode = result.data.sync_mode as string;
       const strategy = MODE_TO_STRATEGY[mode] || SyncStrategy.LOCAL_OVERWRITE;
-      const pathMapping = mapPathMappingConfig(result.data);
+      const regex = mapRegexRules(result.data.path_rules || []);
       const connection: PlexConnectionSettings = {
         protocol: (result.data.scheme as 'http' | 'https') || 'https',
         address: result.data.server_url || '',
@@ -111,9 +63,9 @@ export const apiService = {
         token: result.data.token || '',
         libraryName: result.data.library_name || '',
       };
-      return { status: 'success', data: { strategy, pathMapping, connection, localPath: result.data.local_path || '' } };
+      return { status: 'success', data: { strategy, regex, connection, localPath: result.data.local_path || '' } };
     }
-    return result as ApiResponse<any> as ApiResponse<{ strategy: SyncStrategy; pathMapping: PathMappingConfig; connection: PlexConnectionSettings; localPath: string }>;
+    return result as ApiResponse<any> as ApiResponse<{ strategy: SyncStrategy; regex: RegexReplacement[]; connection: PlexConnectionSettings; localPath: string }>;
   },
 
   async updateSyncStrategy(strategy: SyncStrategy): Promise<ApiResponse<{ sync_mode: string }>> {
@@ -126,9 +78,9 @@ export const apiService = {
     return handleResponse(response);
   },
 
-  async savePathMapping(config: PathMappingConfig): Promise<ApiResponse<null>> {
-    const payload = pathMappingToApi(config);
-    const response = await fetch(`${API_BASE}/api/settings/path-mapping`, {
+  async saveRegexRules(replacements: RegexReplacement[]): Promise<ApiResponse<{ rules: RegexReplacement[] }>> {
+    const payload = { rules: replacements.map(({ pattern, replacement }) => ({ pattern, replacement })) };
+    const response = await fetch(`${API_BASE}/api/settings/regex-rules`, {
       method: 'PUT',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify(payload),
@@ -218,7 +170,7 @@ export const apiService = {
     return result as ApiResponse<{ token: string; serverInfo: PlexServerConnection }>;
   },
 
-  async syncPlaylists(strategy: SyncStrategy, _pathMapping: PathMappingConfig, localPath?: string): Promise<ApiResponse<null>> {
+  async syncPlaylists(strategy: SyncStrategy, _regexRules: RegexReplacement[], localPath?: string): Promise<ApiResponse<null>> {
     const response = await fetch(`${API_BASE}/api/sync`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },

frontend/types.ts

@@ -34,30 +34,6 @@ export enum SyncState {
   ERROR = 'ERROR'
 }
 
-export interface ReplacementRule {
-  id: string;
-  search: string;
-  replace: string;
-}
-
-export interface PathMappingRules {
-  localPre: ReplacementRule[];
-  localPost: ReplacementRule[];
-  remotePre: ReplacementRule[];
-  remotePost: ReplacementRule[];
-}
-
-export enum PathMappingMode {
-  SIMPLE = 'SIMPLE',
-  REGEX = 'REGEX'
-}
-
-export interface PathMappingConfig {
-  mode: PathMappingMode;
-  simple: ReplacementRule[];
-  regex: PathMappingRules;
-}
-
 export interface RegexReplacement {
   id: string;
   pattern: string;

playlists/case1.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 1 - Local playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\ピンポン - ED - 僕らについて\01. “あのヒーローと” 僕らについて - ピンポン - ED - 僕らについて.mp3

playlists/case2.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 2 - Local playlist
+# A comment that should be ignored
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ダンジョン飯\Party!! (期間生産限定盤)\01. Party!! - Party!! (期間生産限定盤).flac

playlists/case3.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 3 - Local playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac

playlists/case4.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 4 - Local playlist
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac

playlists/case_mix.m3u

@@ -0,0 +1,5 @@
+#EXTM3U
+/mnt/music/Anime/CITY THE ANIMATION/Hello/01. Hello - Hello.flac
+\\koha9-nas\koha9-nas\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\MUSIC\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\音ゲー\USAO\MEMORIES\11. Echoes - MEMORIES.flac

test_case/base/case1/base_next.m3u8

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 1 - Base playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac

test_case/base/case2/base_next.m3u8

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 2 - Base playlist
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\リテラチュア\01. リテラチュア - リテラチュア.flac
+N:\Music\Anime\ダンジョン飯\Party!! (期間生産限定盤)\01. Party!! - Party!! (期間生産限定盤).flac

test_case/base/case3/base_next.m3u8

@@ -0,0 +1,5 @@
+#EXTM3U
+# Case 3 - Base playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac

test_case/base/case4/base_next.m3u8

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 4 - Base playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac

test_case/base/case_mix/base_next.m3u8

@@ -0,0 +1,4 @@
+#EXTM3U
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\音ゲー\USAO\MEMORIES\15. Empty Room (Srav3R Remix) - MEMORIES.flac

test_case/local_playlist/case1.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 1 - Local playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\ピンポン - ED - 僕らについて\01. “あのヒーローと” 僕らについて - ピンポン - ED - 僕らについて.mp3

test_case/local_playlist/case2.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 2 - Local playlist
+# A comment that should be ignored
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ダンジョン飯\Party!! (期間生産限定盤)\01. Party!! - Party!! (期間生産限定盤).flac

test_case/local_playlist/case3.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 3 - Local playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac

test_case/local_playlist/case4.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 4 - Local playlist
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac

test_case/local_playlist/case_mix.m3u

@@ -0,0 +1,5 @@
+#EXTM3U
+/mnt/music/Anime/CITY THE ANIMATION/Hello/01. Hello - Hello.flac
+\\koha9-nas\koha9-nas\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\MUSIC\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\音ゲー\USAO\MEMORIES\11. Echoes - MEMORIES.flac

test_case/remote_playlist/case1.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 1 - Remote playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\ピンポン - ED - 僕らについて\02. “あの夜明け前の” 僕らについて - ピンポン - ED - 僕らについて.mp3

test_case/remote_playlist/case2.m3u

@@ -0,0 +1,5 @@
+#EXTM3U
+# Case 2 - Remote playlist
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\リテラチュア\01. リテラチュア - リテラチュア.flac
+N:\Music\Anime\ダンジョン飯\Party!! (期間生産限定盤)\01. Party!! - Party!! (期間生産限定盤).flac

test_case/remote_playlist/case3.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 3 - Remote playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac

test_case/remote_playlist/case4.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 4 - Remote playlist
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac

test_case/remote_playlist/case_mix.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+N:\Music\音ゲー\USAO\MEMORIES\15. Empty Room (Srav3R Remix) - MEMORIES.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\04. Theme of New PANTY & STOCKING (Long Version) - Theme of New PANTY & STOCKING.flac

test_res/case1_merged_local_primary.m3u

@@ -0,0 +1,8 @@
+#EXTM3U
+# Case 1 - Expected merged result (merge_local_primary)
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\ピンポン - ED - 僕らについて\01. “あのヒーローと” 僕らについて - ピンポン - ED - 僕らについて.mp3
+N:\Music\Anime\ピンポン - ED - 僕らについて\02. “あの夜明け前の” 僕らについて - ピンポン - ED - 僕らについて.mp3

test_res/case1_merged_remote_primary.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 1 - Expected merged result (merge_remote_primary)
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\ピンポン - ED - 僕らについて\02. “あの夜明け前の” 僕らについて - ピンポン - ED - 僕らについて.mp3
+N:\Music\Anime\ピンポン - ED - 僕らについて\01. “あのヒーローと” 僕らについて - ピンポン - ED - 僕らについて.mp3

test_res/case2_merged_local_primary.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 2 - Expected merged result (merge_local_primary)
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ダンジョン飯\Party!! (期間生産限定盤)\01. Party!! - Party!! (期間生産限定盤).flac

test_res/case2_merged_remote_primary.m3u

@@ -0,0 +1,5 @@
+#EXTM3U
+# Case 2 - Expected merged result (merge_remote_primary)
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\リテラチュア\01. リテラチュア - リテラチュア.flac
+N:\Music\Anime\ダンジョン飯\Party!! (期間生産限定盤)\01. Party!! - Party!! (期間生産限定盤).flac

test_res/case3_merged_local_primary.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 3 - Expected merged result (merge_local_primary)
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac

test_res/case3_merged_remote_primary.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+# Case 3 - Expected merged result (merge_remote_primary)
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac

test_res/case4_merged_local_primary.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 4 - Expected merged result (merge_local_primary)
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac

test_res/case4_merged_remote_primary.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+# Case 4 - Expected merged result (merge_remote_primary)
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\Anime\キルラキル\新世界交響楽\01. 新世界交響楽 - 新世界交響楽.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\Seize The Day\01. Seize The Day - Seize The Day.flac
+N:\Music\Anime\ゆるキャン△ SEASON2\はるのとなり\01. はるのとなり - はるのとなり.flac

test_res/case_mix_local_force.m3u

@@ -0,0 +1,5 @@
+#EXTM3U
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\音ゲー\USAO\MEMORIES\11. Echoes - MEMORIES.flac

test_res/case_mix_merge_local_primary.m3u

@@ -0,0 +1,7 @@
+#EXTM3U
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\音ゲー\USAO\MEMORIES\11. Echoes - MEMORIES.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\04. Theme of New PANTY & STOCKING (Long Version) - Theme of New PANTY & STOCKING.flac

test_res/case_mix_merge_remote_primary.m3u

@@ -0,0 +1,8 @@
+#EXTM3U
+N:\Music\音ゲー\USAO\MEMORIES\15. Empty Room (Srav3R Remix) - MEMORIES.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\04. Theme of New PANTY & STOCKING (Long Version) - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\02. ちゃんと - Hello.flac
+N:\Music\音ゲー\USAO\MEMORIES\11. Echoes - MEMORIES.flac

test_res/case_mix_remote_force.m3u

@@ -0,0 +1,6 @@
+#EXTM3U
+N:\Music\音ゲー\USAO\MEMORIES\15. Empty Room (Srav3R Remix) - MEMORIES.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\Music\Anime\CITY THE ANIMATION\Hello\01. Hello - Hello.flac
+N:\Music\Anime\少女終末旅行\動く、動く\01. 動く、動く - 動く、動く.flac
+N:\Music\Anime\New PANTY & STOCKING with GARTERBELT\Theme of New PANTY & STOCKING\04. Theme of New PANTY & STOCKING (Long Version) - Theme of New PANTY & STOCKING.flac

tests/REGEX_TESTS_QUICKREF.md

@@ -0,0 +1,128 @@
+# 🎯 正则路径替换测试 - 快速参考
+
+## ✅ 测试状态
+```
+✅ 59/59 测试通过
+⚡ 执行时间: 0.56s
+📦 包含: 13 个合并测试 + 46 个正则测试
+```
+
+## 🚀 快速运行
+
+```bash
+# 运行所有测试
+pytest tests/
+
+# 只运行正则测试
+pytest tests/test_regex_path_replacement.py -v
+
+# 运行特定测试类
+pytest tests/test_regex_path_replacement.py::TestApplyRegexRulesToPaths -v
+
+# 查看覆盖率
+pytest tests/test_regex_path_replacement.py --cov=app.utils.playlist_merge
+```
+
+## 📋 测试分类
+
+| 测试类 | 数量 | 说明 |
+|--------|------|------|
+| TestCompileRegexRules | 7 | 正则编译和验证 |
+| TestApplyCompiledRulesToPaths | 5 | 应用已编译规则 |
+| TestApplyRegexRulesToPaths | 17 | 完整替换流程 |
+| TestPreprocessPlaylistText | 7 | 播放列表预处理 |
+| TestEdgeCases | 9 | 边界情况处理 |
+| TestPerformance | 3 | 性能测试 |
+
+## 💡 常用示例
+
+### 简单替换
+```python
+rules = [{"pattern": r"/old/", "replacement": "/new/"}]
+"/old/music/track.mp3" → "/new/music/track.mp3"
+```
+
+### Windows 路径
+```python
+rules = [{"pattern": r"C:\\Music", "replacement": r"D:\\Audio"}]
+r"C:\Music\track.mp3" → r"D:\Audio\track.mp3"
+```
+
+### 捕获组
+```python
+rules = [{"pattern": r"/(\d+)/", "replacement": r"/year-\1/"}]
+"/music/2024/track.mp3" → "/music/year-2024/track.mp3"
+```
+
+### NAS 路径转换（真实场景）
+```python
+rules = [
+    {"pattern": r"\\\\nas\\Music", "replacement": r"N:\\Music"},
+    {"pattern": r"\\", "replacement": "/"},
+]
+r"\\nas\Music\Album\track.mp3" → "N:/Music/Album/track.mp3"
+```
+
+## 🎨 测试覆盖的场景
+
+### ✅ 路径类型
+- Linux 路径 `/path/to/file`
+- Windows 路径 `C:\path\to\file`
+- UNC 路径 `\\server\share\file`
+- 相对路径 `../path/./file`
+- URL 编码 `/artist%20name/track.mp3`
+- Unicode `/音乐/歌曲.mp3`
+
+### ✅ 正则特性
+- 简单匹配 `foo`
+- 特殊字符 `\(\d+\)`
+- 捕获组 `(pattern)` → `\1`
+- 不区分大小写 `(?i)pattern`
+- 字符类 `[A-Z]+` `\d+` `\w+`
+
+### ✅ 边界情况
+- 空输入（规则/路径）
+- 无效正则表达式
+- 超长路径 (1000+ 字符)
+- 特殊字符 `[]()&#`
+- 链式替换
+
+### ✅ 性能测试
+- 10,000 首歌曲的播放列表
+- 5+ 条规则链式执行
+- 复杂正则模式匹配
+
+## 📖 相关文档
+
+- 详细总结: `tests/REGEX_TESTS_SUMMARY.md`
+- 测试文件: `tests/test_regex_path_replacement.py`
+- 被测代码: `app/utils/playlist_merge.py`
+
+## 🔍 调试技巧
+
+```bash
+# 显示详细输出
+pytest tests/test_regex_path_replacement.py -v -s
+
+# 遇到第一个失败就停止
+pytest tests/test_regex_path_replacement.py -x
+
+# 进入调试器
+pytest tests/test_regex_path_replacement.py --pdb
+
+# 只运行失败的测试
+pytest tests/test_regex_path_replacement.py --lf
+```
+
+## 🎓 测试即文档
+
+每个测试都是一个使用示例，查看测试代码了解如何使用正则替换功能！
+
+```python
+# 示例: 查看如何使用捕获组
+def test_capture_group_replacement():
+    paths = ["/music/2024/album/track.mp3"]
+    rules = [{"pattern": r"/music/(\d+)/", "replacement": r"/archive/\1/"}]
+    result = apply_regex_rules_to_paths(paths, rules)
+    assert result == ["/archive/2024/album/track.mp3"]
+```

tests/REGEX_TESTS_SUMMARY.md

@@ -0,0 +1,283 @@
+# 正则路径替换功能测试总结
+
+## 📊 测试统计
+
+- **总测试数**: 46 个
+- **测试状态**: ✅ 全部通过
+- **执行时间**: ~0.4 秒
+- **覆盖范围**: 正则编译、路径替换、预处理、边界情况、性能测试
+
+## 🎯 测试文件
+
+`tests/test_regex_path_replacement.py` - 正则路径替换功能的全面测试套件
+
+## 📝 测试分类
+
+### 1. TestCompileRegexRules (7 个测试)
+测试正则规则编译功能
+
+- ✅ `test_compile_simple_pattern` - 简单正则模式编译
+- ✅ `test_compile_multiple_patterns` - 多个正则模式编译
+- ✅ `test_compile_empty_pattern_skipped` - 跳过空模式
+- ✅ `test_compile_missing_pattern_skipped` - 跳过缺失模式
+- ✅ `test_compile_invalid_regex_skipped` - 跳过无效正则表达式
+- ✅ `test_compile_empty_replacement` - 空替换字符串
+- ✅ `test_compile_missing_replacement` - 缺失替换字符串（默认为空）
+
+**关键测试点**:
+- 编译过程容错性（跳过无效规则）
+- 边界情况处理（空/缺失值）
+
+### 2. TestApplyCompiledRulesToPaths (5 个测试)
+测试应用已编译的正则规则到路径
+
+- ✅ `test_apply_single_rule` - 应用单个规则
+- ✅ `test_apply_multiple_rules_in_order` - 按顺序应用多个规则
+- ✅ `test_apply_no_rules` - 没有规则时返回原路径
+- ✅ `test_apply_no_match` - 规则不匹配时保持原路径
+- ✅ `test_apply_partial_match` - 部分路径匹配
+
+**关键测试点**:
+- 规则顺序执行
+- 链式替换（第一个规则的输出作为第二个规则的输入）
+- 部分匹配处理
+
+### 3. TestApplyRegexRulesToPaths (17 个测试)
+测试完整的路径正则替换流程
+
+#### 基础替换
+- ✅ `test_simple_replacement` - 简单字符串替换
+- ✅ `test_windows_path_replacement` - Windows 路径替换
+- ✅ `test_unc_path_replacement` - UNC 网络路径替换
+
+#### 高级正则功能
+- ✅ `test_case_sensitive_replacement` - 大小写敏感替换
+- ✅ `test_case_insensitive_replacement` - 大小写不敏感替换（`(?i)` 标志）
+- ✅ `test_regex_special_characters` - 正则特殊字符处理
+- ✅ `test_capture_group_replacement` - 捕获组替换 `\1`
+- ✅ `test_multiple_capture_groups` - 多个捕获组交换位置
+
+#### 实用场景
+- ✅ `test_delete_pattern` - 删除匹配内容（替换为空）
+- ✅ `test_multiple_matches_in_path` - 路径中多次匹配
+- ✅ `test_chained_replacements` - 链式替换（NAS 路径转换）
+- ✅ `test_url_encoding_path` - URL 编码路径处理
+- ✅ `test_unicode_path` - Unicode 路径支持
+
+#### 边界情况
+- ✅ `test_empty_rules_list` - 空规则列表
+- ✅ `test_empty_paths_list` - 空路径列表
+
+**关键测试点**:
+- 各种路径格式（Windows、Linux、UNC、URL 编码）
+- 正则高级特性（捕获组、标志）
+- 国际化支持（Unicode）
+
+### 4. TestPreprocessPlaylistText (7 个测试)
+测试预处理播放列表文本（含正则替换）
+
+- ✅ `test_preprocess_with_replacements` - 带替换的预处理
+- ✅ `test_preprocess_removes_comments` - 移除注释
+- ✅ `test_preprocess_empty_text` - 空文本处理
+- ✅ `test_preprocess_with_blank_lines` - 处理空行
+- ✅ `test_preprocess_real_world_scenario` - **真实场景：NAS 路径转换**
+- ✅ `test_preprocess_with_compiled_rules` - 使用预编译规则
+- ✅ `test_preprocess_preserves_order` - 保持顺序
+
+**关键测试点**:
+- 完整的播放列表处理流程
+- 注释和空行过滤
+- 真实使用场景验证
+
+**真实场景示例**:
+```python
+# 输入
+\\koha9-nas\koha9-nas\Music\Rock\track.flac
+/music/cache/temp.flac
+
+# 规则
+1. \\koha9-nas\koha9-nas\Music → N:\Music
+2. /music/cache/ → /data/music/
+3. \ → /
+
+# 输出
+N:/Music/Rock/track.flac
+/data/music/temp.flac
+```
+
+### 5. TestEdgeCases (9 个测试)
+测试边界情况和异常场景
+
+- ✅ `test_very_long_path` - 超长路径（1000+ 字符）
+- ✅ `test_special_characters_in_path` - 特殊字符 `[]()&#`
+- ✅ `test_dot_in_path` - 相对路径符号 `../` `./`
+- ✅ `test_trailing_slash` - 尾部斜杠处理
+- ✅ `test_duplicate_slashes` - 重复斜杠 `//` `///`
+- ✅ `test_mixed_path_separators` - 混合路径分隔符 `\` `/`
+- ✅ `test_regex_metacharacters_in_replacement` - 替换字符串中的元字符
+- ✅ `test_empty_string_replacement` - 替换为空字符串
+- ✅ `test_replacement_creates_invalid_path` - 可能产生无效路径
+
+**关键测试点**:
+- 极端输入处理
+- 路径规范化场景
+- 错误容忍性
+
+### 6. TestPerformance (3 个测试)
+测试性能相关场景
+
+- ✅ `test_large_playlist` - 大型播放列表（10,000 首歌曲）
+- ✅ `test_many_rules` - 大量规则（5+ 个规则链式执行）
+- ✅ `test_complex_regex_pattern` - 复杂正则表达式
+
+**性能示例**:
+```python
+# 复杂正则模式
+Pattern: /music/(.+?) - (.+?) \((\d+)\) \[([^\]]+)\]/
+Input:   /music/Artist - Album (2024) [FLAC]/01. Track.flac
+Output:  /library/FLAC/2024/Artist/Album/01. Track.flac
+```
+
+**关键测试点**:
+- 大数据量处理能力
+- 复杂模式匹配性能
+- 规则链执行效率
+
+## 🔍 覆盖的功能点
+
+### 核心功能
+- ✅ 正则规则编译和验证
+- ✅ 规则按顺序应用到路径
+- ✅ 播放列表文本预处理
+- ✅ 捕获组和反向引用
+- ✅ 大小写敏感/不敏感匹配
+
+### 路径类型
+- ✅ Linux/Unix 绝对路径 `/path/to/file`
+- ✅ Windows 绝对路径 `C:\path\to\file`
+- ✅ UNC 网络路径 `\\server\share\file`
+- ✅ 相对路径 `../path/./file`
+- ✅ URL 编码路径 `/artist%20name/track.mp3`
+- ✅ Unicode 路径 `/音乐/专辑/歌曲.mp3`
+
+### 正则特性
+- ✅ 简单字符串匹配
+- ✅ 特殊字符转义 `()[].*+?`
+- ✅ 捕获组 `(pattern)` 和引用 `\1`
+- ✅ 不区分大小写 `(?i)`
+- ✅ 量词 `*+?{n}`
+- ✅ 字符类 `[^/]+` `\d+` `\w+`
+
+### 边界情况
+- ✅ 空输入（规则/路径）
+- ✅ 无效正则表达式
+- ✅ 不匹配的规则
+- ✅ 超长路径
+- ✅ 特殊字符
+- ✅ 链式替换
+
+### 容错性
+- ✅ 跳过空模式
+- ✅ 跳过无效正则
+- ✅ 默认替换为空字符串
+- ✅ 保留不匹配的路径
+
+## 🎓 测试用例示例
+
+### 基础替换
+```python
+paths = ["/old/path/file.mp3"]
+rules = [{"pattern": r"/old/", "replacement": "/new/"}]
+# 结果: ["/new/path/file.mp3"]
+```
+
+### 捕获组替换
+```python
+paths = ["/music/2024/album/track.mp3"]
+rules = [{"pattern": r"/music/(\d+)/", "replacement": r"/archive/\1/"}]
+# 结果: ["/archive/2024/album/track.mp3"]
+```
+
+### 链式替换（真实场景）
+```python
+paths = [r"\\nas\Music\Album\track.mp3"]
+rules = [
+    {"pattern": r"\\\\nas\\Music", "replacement": "/mnt/music"},
+    {"pattern": r"\\", "replacement": "/"},
+]
+# 结果: ["/mnt/music/Album/track.mp3"]
+```
+
+### 复杂模式匹配
+```python
+paths = ["/music/Artist - Album (2024) [FLAC]/01. Track.flac"]
+rules = [
+    {
+        "pattern": r"/music/(.+?) - (.+?) \((\d+)\) \[([^\]]+)\]/",
+        "replacement": r"/library/\4/\3/\1/\2/"
+    }
+]
+# 结果: ["/library/FLAC/2024/Artist/Album/01. Track.flac"]
+```
+
+## 🚀 运行测试
+
+### 运行正则替换测试
+```bash
+pytest tests/test_regex_path_replacement.py -v
+```
+
+### 运行特定测试类
+```bash
+pytest tests/test_regex_path_replacement.py::TestApplyRegexRulesToPaths -v
+```
+
+### 运行特定测试
+```bash
+pytest tests/test_regex_path_replacement.py::TestPreprocessPlaylistText::test_preprocess_real_world_scenario -v
+```
+
+### 查看测试覆盖率
+```bash
+pytest tests/test_regex_path_replacement.py --cov=app.utils.playlist_merge --cov-report=term
+```
+
+## 💡 测试最佳实践
+
+本测试套件遵循的最佳实践：
+
+1. **分类清晰** - 按功能层级组织测试类
+2. **命名规范** - 测试名称清楚描述测试内容
+3. **独立性** - 每个测试独立运行，无依赖
+4. **覆盖全面** - 正常流程、边界情况、错误处理全覆盖
+5. **文档化** - 每个测试都有描述性文档字符串
+6. **真实场景** - 包含实际使用场景的测试用例
+7. **性能考虑** - 包含大数据量和复杂模式的性能测试
+
+## 📈 测试价值
+
+这套测试为正则路径替换功能提供了：
+
+- **信心保证** - 46 个测试覆盖各种场景
+- **回归防护** - 修改代码时快速验证功能完整性
+- **文档作用** - 测试即使用示例和功能文档
+- **重构支持** - 安全重构代码而不破坏功能
+- **Bug 预防** - 边界情况测试防止潜在 Bug
+
+## 🔧 维护建议
+
+1. **添加新功能时**同步添加测试
+2. **发现 Bug 时**先写失败测试，再修复
+3. **定期运行**完整测试套件
+4. **保持测试更新**与代码变更同步
+5. **关注覆盖率**保持 80% 以上
+
+## 相关文件
+
+- 测试文件: `tests/test_regex_path_replacement.py`
+- 被测代码: `app/utils/playlist_merge.py`
+- 相关函数:
+  - `_compile_regex_rules()`
+  - `_apply_compiled_rules_to_paths()`
+  - `apply_regex_rules_to_paths()`
+  - `preprocess_playlist_text()`

tests/UI_QUICKSTART.md

@@ -0,0 +1,172 @@
+# 🎭 UI 集成测试快速开始
+
+## 📦 安装
+
+```bash
+# 1. 安装 Python 依赖
+pip install -r requirements.txt
+
+# 2. 安装 Playwright 浏览器
+playwright install chromium
+
+# 或安装所有浏览器
+playwright install
+```
+
+## 🚀 运行测试
+
+### 启动服务器
+```bash
+# 终端 1: 启动应用
+uvicorn app.main:app --reload --port 8000
+```
+
+### 运行 UI 测试
+```bash
+# 终端 2: 运行测试
+
+# 无头模式（后台运行，快速）
+pytest tests/test_ui_regex_rules.py -v
+
+# 有头模式（显示浏览器，便于调试）
+pytest tests/test_ui_regex_rules.py -v --headed
+
+# 慢速模式（每个操作间隔 500ms，方便观察）
+pytest tests/test_ui_regex_rules.py -v --headed --slowmo=500
+```
+
+## 📊 测试内容
+
+### ✅ 基础交互 (8 个测试)
+- 页面加载
+- 添加/删除规则
+- 保存规则
+- 规则持久化
+- 表单验证
+- 规则顺序
+
+### ✅ 复杂场景 (2 个测试)
+- Windows → Linux 路径转换
+- NAS 路径规范化
+
+### ✅ 性能测试 (1 个测试)
+- 添加 20 个规则性能
+
+## 🎯 快速示例
+
+```bash
+# 运行单个测试（有头模式，便于观察）
+pytest tests/test_ui_regex_rules.py::TestRegexRulesUI::test_add_single_rule -v --headed
+
+# 运行 NAS 场景测试
+pytest tests/test_ui_regex_rules.py::TestComplexScenarios::test_nas_path_normalization -v --headed
+
+# 调试模式（带 Playwright Inspector）
+PWDEBUG=1 pytest tests/test_ui_regex_rules.py::TestRegexRulesUI::test_add_single_rule
+```
+
+## 🐛 调试技巧
+
+### 1. 截图调试
+测试失败时会自动保存截图到 `tests/screenshots/`
+
+### 2. 慢速观察
+```bash
+pytest tests/test_ui_regex_rules.py --headed --slowmo=1000 -v
+```
+
+### 3. 交互式调试
+```bash
+PWDEBUG=1 pytest tests/test_ui_regex_rules.py -k test_add_single_rule
+```
+
+### 4. 查看追踪
+```python
+# 在测试中添加
+context.tracing.start(screenshots=True, snapshots=True)
+# ... 测试代码 ...
+context.tracing.stop(path="trace.zip")
+```
+
+然后查看:
+```bash
+playwright show-trace trace.zip
+```
+
+## 📝 编写新测试
+
+```python
+def test_my_feature(page: Page):
+    """测试我的功能"""
+    # 1. 与元素交互
+    page.locator("#myButton").click()
+    
+    # 2. 填写表单
+    page.locator("input[name='pattern']").fill("test")
+    
+    # 3. 验证结果
+    expect(page.locator("#result")).to_have_text("Success")
+```
+
+## 🎨 选择器参考
+
+```python
+# 通过 ID
+page.locator("#addRuleBtn")
+
+# 通过文本
+page.locator("button:has-text('保存规则')")
+
+# 通过 CSS 类
+page.locator(".rule-row")
+
+# 通过属性
+page.locator("input[name='pattern']")
+
+# 组合选择器
+page.locator(".rule-row input[name='pattern']")
+
+# 获取第一个/最后一个
+page.locator(".rule-row").first
+page.locator(".rule-row").last
+
+# 获取第 N 个
+page.locator(".rule-row").nth(2)
+```
+
+## ⚡ 常用命令
+
+```bash
+# 运行所有 UI 测试
+pytest tests/test_ui_regex_rules.py -v
+
+# 运行特定测试类
+pytest tests/test_ui_regex_rules.py::TestRegexRulesUI -v
+
+# 运行标记为 slow 的测试
+pytest tests/test_ui_regex_rules.py -m slow -v
+
+# 跳过 slow 测试
+pytest tests/test_ui_regex_rules.py -m "not slow" -v
+
+# 失败时进入调试器
+pytest tests/test_ui_regex_rules.py --pdb
+
+# 只运行失败的测试
+pytest tests/test_ui_regex_rules.py --lf -v
+```
+
+## 📚 相关文档
+
+- 详细指南: `tests/UI_TESTING_GUIDE.md`
+- Playwright 文档: https://playwright.dev/python/
+- pytest-playwright: https://github.com/microsoft/playwright-pytest
+
+## 🎉 开始测试
+
+```bash
+# 一行命令开始
+uvicorn app.main:app --port 8000 & \
+sleep 3 && \
+pytest tests/test_ui_regex_rules.py -v --headed
+```

tests/UI_TESTING_GUIDE.md

@@ -0,0 +1,356 @@
+# UI 集成测试指南
+
+## 📋 概述
+
+UI 集成测试使用 **Playwright** 框架来测试正则路径替换功能的用户界面交互。
+
+## 🚀 快速开始
+
+### 1. 安装依赖
+
+```bash
+# 安装 Playwright 和浏览器驱动
+pip install pytest-playwright
+playwright install chromium
+
+# 或安装所有浏览器
+playwright install
+```
+
+### 2. 启动应用服务器
+
+在运行 UI 测试前，需要先启动应用:
+
+```bash
+# 方式 1: 直接运行
+uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
+
+# 方式 2: 使用 Docker
+docker compose up
+```
+
+### 3. 运行 UI 测试
+
+```bash
+# 无头模式（不显示浏览器）
+pytest tests/test_ui_regex_rules.py -v
+
+# 有头模式（显示浏览器，便于调试）
+pytest tests/test_ui_regex_rules.py -v --headed
+
+# 慢速模式（方便观察）
+pytest tests/test_ui_regex_rules.py -v --headed --slowmo=500
+
+# 运行特定测试
+pytest tests/test_ui_regex_rules.py::TestRegexRulesUI::test_add_single_rule -v --headed
+```
+
+## 📊 测试覆盖
+
+### 基础 UI 交互测试 (TestRegexRulesUI)
+
+| 测试 | 描述 |
+|------|------|
+| `test_page_loads_successfully` | 页面成功加载 |
+| `test_add_single_rule` | 添加单个规则 |
+| `test_add_multiple_rules` | 添加多个规则 |
+| `test_remove_rule` | 删除规则 |
+| `test_save_rules` | 保存规则 |
+| `test_rules_persist_after_save` | 规则持久化验证 |
+| `test_empty_pattern_validation` | 空模式验证 |
+| `test_rule_order_preserved` | 规则顺序保持 |
+
+### 复杂场景测试 (TestComplexScenarios)
+
+| 测试 | 描述 |
+|------|------|
+| `test_windows_to_linux_path_conversion` | Windows → Linux 路径转换 |
+| `test_nas_path_normalization` | NAS 路径规范化 |
+
+### 性能测试 (TestPerformance)
+
+| 测试 | 描述 |
+|------|------|
+| `test_add_many_rules_performance` | 添加大量规则性能 |
+
+## 🎯 测试场景示例
+
+### 场景 1: 添加单个规则
+
+```python
+# 1. 点击"添加规则"按钮
+# 2. 填写正则表达式: /old/path/
+# 3. 填写替换文本: /new/path/
+# 4. 验证输入框内容正确
+```
+
+### 场景 2: NAS 路径规范化
+
+```python
+# 添加三条规则:
+# 1. \\koha9-nas\koha9-nas\Music → N:\Music
+# 2. /music/cache/ → /data/music/
+# 3. \ → /
+# 
+# 保存并验证规则持久化
+```
+
+### 场景 3: 规则持久化验证
+
+```python
+# 1. 添加规则
+# 2. 保存
+# 3. 刷新页面
+# 4. 验证规则仍然存在
+```
+
+## 🔧 配置选项
+
+### pytest.ini 配置
+
+```ini
+[pytest]
+# Playwright 配置
+addopts = 
+    --browser=chromium
+    --headed
+    --slowmo=100
+```
+
+### 环境变量
+
+```bash
+# 设置测试服务器地址
+export TEST_SERVER_URL="http://localhost:8000"
+
+# 设置浏览器类型
+export BROWSER=chromium  # 或 firefox, webkit
+```
+
+## 🐛 调试技巧
+
+### 1. 使用有头模式
+
+```bash
+pytest tests/test_ui_regex_rules.py --headed
+```
+
+### 2. 使用慢速模式
+
+```bash
+pytest tests/test_ui_regex_rules.py --headed --slowmo=1000
+```
+
+### 3. 截图调试
+
+在测试中添加截图:
+
+```python
+def test_something(page: Page):
+    page.screenshot(path="debug_screenshot.png")
+```
+
+### 4. 使用 Playwright Inspector
+
+```bash
+# 启动调试模式
+PWDEBUG=1 pytest tests/test_ui_regex_rules.py::test_add_single_rule
+```
+
+### 5. 查看追踪
+
+```python
+# 在 conftest.py 中添加
+@pytest.fixture
+def context(browser):
+    context = browser.new_context()
+    context.tracing.start(screenshots=True, snapshots=True)
+    yield context
+    context.tracing.stop(path="trace.zip")
+```
+
+然后查看:
+```bash
+playwright show-trace trace.zip
+```
+
+## 📝 编写新的 UI 测试
+
+### 基本模板
+
+```python
+def test_my_feature(page: Page):
+    """测试我的功能"""
+    # 1. 导航到页面
+    page.goto("http://localhost:8000")
+    
+    # 2. 与元素交互
+    button = page.locator("#myButton")
+    button.click()
+    
+    # 3. 验证结果
+    expect(page.locator("#result")).to_have_text("Success")
+```
+
+### 等待策略
+
+```python
+# 等待元素可见
+page.wait_for_selector("#element", state="visible")
+
+# 等待网络空闲
+page.wait_for_load_state("networkidle")
+
+# 等待特定时间（尽量避免）
+page.wait_for_timeout(1000)  # 1 秒
+```
+
+### 选择器策略
+
+```python
+# 推荐: 使用 data-testid
+page.locator("[data-testid='add-rule-btn']")
+
+# 通过文本
+page.locator("button:has-text('保存规则')")
+
+# 通过 ID
+page.locator("#addRuleBtn")
+
+# 通过 CSS 类
+page.locator(".rule-row")
+
+# 组合选择器
+page.locator(".rule-row input[name='pattern']")
+```
+
+## 🎨 最佳实践
+
+### 1. 使用 Page Object 模式
+
+```python
+class RulesPage:
+    def __init__(self, page: Page):
+        self.page = page
+        self.add_button = page.locator("#addRuleBtn")
+        self.save_button = page.locator("button:has-text('保存规则')")
+    
+    def add_rule(self, pattern: str, replacement: str):
+        self.add_button.click()
+        self.page.wait_for_timeout(100)
+        
+        patterns = self.page.locator("input[name='pattern']")
+        replacements = self.page.locator("input[name='replacement']")
+        
+        patterns.last.fill(pattern)
+        replacements.last.fill(replacement)
+    
+    def save(self):
+        self.save_button.click()
+        self.page.wait_for_load_state("networkidle")
+
+# 使用
+def test_with_page_object(page: Page):
+    rules_page = RulesPage(page)
+    rules_page.add_rule(r"/old/", r"/new/")
+    rules_page.save()
+```
+
+### 2. 使用 Fixtures 清理状态
+
+```python
+@pytest.fixture
+def clean_rules(page: Page):
+    """清除所有规则"""
+    page.goto("http://localhost:8000")
+    while page.locator(".rule-row").count() > 0:
+        page.locator(".rule-row button[title='删除此规则']").first.click()
+        page.wait_for_timeout(50)
+    yield
+```
+
+### 3. 避免硬编码等待时间
+
+```python
+# ❌ 不好
+page.wait_for_timeout(2000)
+
+# ✅ 好
+page.wait_for_selector("#element", state="visible")
+page.wait_for_load_state("networkidle")
+```
+
+### 4. 使用断言而非 if 判断
+
+```python
+# ❌ 不好
+assert page.locator("#element").count() > 0
+
+# ✅ 好
+expect(page.locator("#element")).to_be_visible()
+```
+
+## 🔄 CI/CD 集成
+
+### GitHub Actions 示例
+
+```yaml
+name: UI Tests
+
+on: [push, pull_request]
+
+jobs:
+  ui-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.10'
+      
+      - name: Install dependencies
+        run: |
+          pip install -r requirements.txt
+          pip install pytest-playwright
+          playwright install --with-deps chromium
+      
+      - name: Start application
+        run: |
+          uvicorn app.main:app --host 0.0.0.0 --port 8000 &
+          sleep 5
+      
+      - name: Run UI tests
+        run: pytest tests/test_ui_regex_rules.py -v
+      
+      - name: Upload screenshots on failure
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: screenshots
+          path: screenshots/
+```
+
+## 📚 参考资料
+
+- [Playwright 官方文档](https://playwright.dev/python/)
+- [pytest-playwright 插件](https://github.com/microsoft/playwright-pytest)
+- [Playwright 最佳实践](https://playwright.dev/python/docs/best-practices)
+
+## 🆘 常见问题
+
+### Q: 测试运行时找不到浏览器？
+A: 运行 `playwright install chromium`
+
+### Q: 测试失败，如何调试？
+A: 使用 `--headed --slowmo=500` 参数可视化执行过程
+
+### Q: 如何在测试中等待异步操作？
+A: 使用 `page.wait_for_load_state("networkidle")` 或 `page.wait_for_selector()`
+
+### Q: 如何处理动态加载的内容？
+A: 使用 `expect().to_be_visible()` 会自动等待元素出现
+
+### Q: 测试很慢怎么办？
+A: 减少不必要的 `wait_for_timeout()`,使用事件驱动的等待方法

tests/UI_TEST_MIGRATION_GUIDE.md

@@ -0,0 +1,175 @@
+# UI测试迁移指南
+
+## 概述
+
+本文档说明了UI测试从旧版本迁移到新React前端的主要变更。
+
+## 主要变更
+
+### 1. 输出目录变更
+
+**旧版本:**
+```
+dockerapp/test_playlists/{playlist_name}/
+```
+
+**新版本:**
+```
+output_playlists/{playlist_name}/
+```
+
+### 2. 服务器端口变更
+
+**旧版本:**
+- 测试服务器: `http://localhost:8000`
+
+**新版本:**
+- Docker映射端口: `http://localhost:8888`
+- 容器内端口: `8080`
+
+### 3. UI架构变更
+
+**旧版本:**
+- 传统的HTML模板 (Jinja2)
+- 选择器: `#addRuleBtn`, `select[name='mode']`, `input[name='pattern']`
+
+**新版本:**
+- React + TypeScript + Vite
+- 策略选择器: 中间位置的圆形按钮下拉菜单
+- 正则规则在StrategySelector组件中管理
+- 选择器: `button[title='Add Rule']`, `input[placeholder='Regex Pattern']`
+
+### 4. 测试文件修改
+
+#### `conftest_ui.py`
+- 更新BASE_URL为`http://localhost:8888`
+- 修改server fixture为仅验证服务器运行状态
+- 要求手动启动Docker Compose服务
+
+#### `test_ui_case_mix.py`
+- 添加`SyncStrategy`枚举类
+- 实现`_open_strategy_selector()`和`_close_strategy_selector()`辅助函数
+- 更新策略选择逻辑以适配React UI
+- 更新正则规则添加逻辑
+- 修改输出路径为`output_playlists/case_mix/`
+
+#### `test_ui_regex_rules.py`
+- 完全重写所有测试用例以适配React UI
+- 添加辅助方法`_open_strategy_selector()`和`_close_strategy_selector()`
+- 更新所有选择器以匹配新UI结构
+- 适配Toast通知验证
+
+## 运行测试
+
+### 前提条件
+
+1. **启动Docker Compose服务:**
+   ```powershell
+   docker compose up -d
+   ```
+
+2. **验证服务运行:**
+   ```powershell
+   # 在浏览器中访问
+   # http://localhost:8888
+   ```
+
+3. **安装测试依赖:**
+   ```powershell
+   pip install pytest-playwright requests
+   playwright install
+   ```
+
+### 运行测试
+
+**显示浏览器模式 (调试用):**
+```powershell
+pytest tests/test_ui_case_mix.py --headed
+pytest tests/test_ui_regex_rules.py --headed
+```
+
+**无头模式 (CI/CD):**
+```powershell
+pytest tests/test_ui_case_mix.py
+pytest tests/test_ui_regex_rules.py
+```
+
+**运行所有UI测试:**
+```powershell
+pytest tests/test_ui_*.py --headed
+```
+
+## 新UI元素定位
+
+### 策略选择器
+
+- **触发按钮:** `button` with SVG icon (圆形按钮)
+- **下拉菜单:** `div.absolute.top-14`
+- **策略选项:** `div:has-text('{strategy_label}')` with SVG
+
+### 正则规则
+
+- **添加按钮:** `button[title='Add Rule']` 或 `button:has-text('Add Rule')`
+- **删除按钮:** `button[title='Delete Rule']`
+- **模式输入:** `input[placeholder='Regex Pattern']`
+- **替换输入:** `input[placeholder='Replacement']`
+- **保存按钮:** `button:has-text('Save Changes')`
+- **重置按钮:** `button:has-text('Revert')`
+
+### Toast通知
+
+- **成功通知:** `div:has-text('Regex preprocessing rules have been saved')`
+- **策略保存:** `div:has-text('Selected strategy "{label}" has been saved')`
+
+## 策略映射
+
+| UI显示名称 | SyncStrategy枚举 | 旧版mode值 | 预期输出文件 |
+|-----------|-----------------|-----------|-------------|
+| Local Overwrite | LOCAL_OVERWRITE | local_force | case_mix_local_force.m3u |
+| Cloud Overwrite | CLOUD_OVERWRITE | remote_force | case_mix_remote_force.m3u |
+| Two-way Merge (Local Priority) | MERGE_LOCAL | merge_local_primary | case_mix_merge_local_primary.m3u |
+| Two-way Merge (Cloud Priority) | MERGE_CLOUD | merge_remote_primary | case_mix_merge_remote_primary.m3u |
+
+## 已知问题和注意事项
+
+1. **同步触发:** 新UI需要通过API显式触发同步操作。测试中使用 `POST /api/sync` 端点:
+   ```python
+   import requests
+   sync_response = requests.post(
+       f"{BASE_URL}/api/sync",
+       json={"mode": None}  # 使用当前配置的策略
+   )
+   ```
+
+2. **Toast通知:** Toast通知有动画效果，需要适当的等待时间 (300-500ms)。
+
+3. **下拉菜单:** 策略选择器的下拉菜单需要通过ESC键关闭，或点击外部区域。
+
+4. **测试隔离:** 每个测试应该清理自己添加的规则，避免影响后续测试。
+
+## 故障排除
+
+### 服务器未运行
+```
+错误: 无法连接到测试服务器: http://localhost:8888
+解决: docker compose up -d
+```
+
+### 元素未找到
+```
+错误: Timeout waiting for locator('button[title="Add Rule"]')
+解决: 检查策略选择器是否已打开，确保调用了_open_strategy_selector()
+```
+
+### 输出文件未生成
+```
+错误: AssertionError: {strategy_label}: local_result.m3u8 未生成
+解决: 
+1. 检查output_playlists/case_mix/目录是否存在
+2. 验证Docker volume映射配置
+3. 检查后端日志: docker compose logs
+```
+
+## 更新日期
+
+2024-11-29 - 初始迁移完成

tests/conftest_ui.py

@@ -0,0 +1,131 @@
+"""
+Pytest fixtures for UI testing
+
+注意: 此测试套件假设服务已通过 Docker Compose 启动
+运行前请确保: docker compose up -d
+"""
+
+import os
+import time
+from pathlib import Path
+
+import pytest
+from playwright.sync_api import Browser, Page
+
+
+# 测试服务器配置 - Docker映射端口8888到容器内8080
+TEST_SERVER_HOST = os.getenv("TEST_SERVER_HOST", "localhost")
+TEST_SERVER_PORT = int(os.getenv("TEST_SERVER_PORT", "8888"))
+BASE_URL = f"http://{TEST_SERVER_HOST}:{TEST_SERVER_PORT}"
+
+
+@pytest.fixture(scope="session")
+def test_server():
+    """
+    验证测试服务器是否运行
+    
+    此fixture不启动服务器,而是检查Docker Compose服务是否已启动。
+    请在运行测试前手动启动: docker compose up -d
+    """
+    # 检查服务器是否已经在运行
+    max_retries = 10
+    for i in range(max_retries):
+        try:
+            import requests
+            response = requests.get(BASE_URL, timeout=3)
+            if response.status_code < 500:
+                print(f"✓ 服务器已在运行: {BASE_URL}")
+                yield BASE_URL
+                return
+        except Exception as e:
+            if i == max_retries - 1:
+                raise RuntimeError(
+                    f"无法连接到测试服务器: {BASE_URL}\n"
+                    f"请确保已启动 Docker Compose 服务: docker compose up -d\n"
+                    f"错误: {e}"
+                )
+            time.sleep(2)
+    
+    yield BASE_URL
+
+
+@pytest.fixture
+def browser_context_args(browser_context_args):
+    """配置浏览器上下文"""
+    return {
+        **browser_context_args,
+        "viewport": {"width": 1920, "height": 1080},
+        "locale": "zh-CN",
+    }
+
+
+@pytest.fixture
+def page(page: Page, test_server):
+    """
+    配置页面并导航到首页
+    
+    自动导航到测试服务器的首页，并等待页面加载完成。
+    """
+    page.goto(test_server)
+    page.wait_for_load_state("networkidle")
+    
+    # 设置默认超时
+    page.set_default_timeout(10000)  # 10 秒
+    
+    yield page
+    
+    # 测试失败时截图
+    if page.context.browser.is_connected():
+        try:
+            screenshots_dir = Path(__file__).parent / "screenshots"
+            screenshots_dir.mkdir(exist_ok=True)
+            
+            test_name = os.environ.get("PYTEST_CURRENT_TEST", "unknown").split(":")[-1].split(" ")[0]
+            screenshot_path = screenshots_dir / f"{test_name}.png"
+            
+            page.screenshot(path=str(screenshot_path))
+            print(f"截图保存至: {screenshot_path}")
+        except Exception as e:
+            print(f"截图失败: {e}")
+
+
+@pytest.fixture
+def clean_rules(page: Page):
+    """
+    清除所有规则的 fixture
+    
+    在测试前清除所有现有的正则规则，确保测试从干净状态开始。
+    """
+    # 清除所有规则
+    while page.locator(".rule-row").count() > 0:
+        try:
+            remove_btn = page.locator(".rule-row button[title='删除此规则']").first
+            remove_btn.click()
+            page.wait_for_timeout(50)
+        except:
+            break  # 如果没有更多规则可删除
+    
+    yield
+    
+    # 测试后不清理，让下一个测试自己清理
+    # 这样可以在浏览器中查看测试结果
+
+
+@pytest.fixture
+def sample_rules():
+    """提供示例规则数据"""
+    return [
+        {"pattern": r"/old/path/", "replacement": r"/new/path/"},
+        {"pattern": r"C:\\Music", "replacement": r"D:\\Audio"},
+        {"pattern": r"\\\\nas\\share", "replacement": r"Z:"},
+    ]
+
+
+@pytest.fixture
+def nas_conversion_rules():
+    """提供 NAS 路径转换规则"""
+    return [
+        {"pattern": r"\\\\koha9-nas\\koha9-nas\\Music", "replacement": r"N:\\Music"},
+        {"pattern": r"/music/cache/", "replacement": r"/data/music/"},
+        {"pattern": r"\\", "replacement": r"/"},
+    ]

tests/test_regex_path_replacement.py

@@ -0,0 +1,554 @@
+"""
+Unit tests for regex path replacement functionality.
+测试正则替换路径功能的各种场景。
+"""
+
+import re
+from pathlib import Path
+
+import pytest
+
+from app.utils.playlist_merge import (
+    _compile_regex_rules,
+    _apply_compiled_rules_to_paths,
+    apply_regex_rules_to_paths,
+    preprocess_playlist_text,
+)
+
+
+class TestCompileRegexRules:
+    """测试正则规则编译功能"""
+    
+    def test_compile_simple_pattern(self):
+        """测试编译简单正则模式"""
+        rules = [{"pattern": r"foo", "replacement": "bar"}]
+        compiled = _compile_regex_rules(rules)
+        
+        assert len(compiled) == 1
+        assert isinstance(compiled[0][0], re.Pattern)
+        assert compiled[0][1] == "bar"
+    
+    def test_compile_multiple_patterns(self):
+        """测试编译多个正则模式"""
+        rules = [
+            {"pattern": r"foo", "replacement": "bar"},
+            {"pattern": r"\d+", "replacement": "NUM"},
+            {"pattern": r"[A-Z]+", "replacement": "UPPER"},
+        ]
+        compiled = _compile_regex_rules(rules)
+        
+        assert len(compiled) == 3
+    
+    def test_compile_empty_pattern_skipped(self):
+        """测试跳过空模式"""
+        rules = [
+            {"pattern": "", "replacement": "bar"},
+            {"pattern": r"foo", "replacement": "bar"},
+        ]
+        compiled = _compile_regex_rules(rules)
+        
+        assert len(compiled) == 1
+    
+    def test_compile_missing_pattern_skipped(self):
+        """测试跳过缺失模式"""
+        rules = [
+            {"replacement": "bar"},  # no pattern
+            {"pattern": r"foo", "replacement": "bar"},
+        ]
+        compiled = _compile_regex_rules(rules)
+        
+        assert len(compiled) == 1
+    
+    def test_compile_invalid_regex_skipped(self):
+        """测试跳过无效正则表达式"""
+        rules = [
+            {"pattern": r"[invalid(", "replacement": "bar"},  # invalid regex
+            {"pattern": r"foo", "replacement": "bar"},
+        ]
+        compiled = _compile_regex_rules(rules)
+        
+        # Invalid pattern should be skipped
+        assert len(compiled) == 1
+    
+    def test_compile_empty_replacement(self):
+        """测试空替换字符串"""
+        rules = [{"pattern": r"foo", "replacement": ""}]
+        compiled = _compile_regex_rules(rules)
+        
+        assert len(compiled) == 1
+        assert compiled[0][1] == ""
+    
+    def test_compile_missing_replacement(self):
+        """测试缺失替换字符串（默认为空）"""
+        rules = [{"pattern": r"foo"}]
+        compiled = _compile_regex_rules(rules)
+        
+        assert len(compiled) == 1
+        assert compiled[0][1] == ""
+
+
+class TestApplyCompiledRulesToPaths:
+    """测试应用已编译的正则规则到路径"""
+    
+    def test_apply_single_rule(self):
+        """测试应用单个规则"""
+        paths = ["/music/album/track1.mp3", "/music/album/track2.mp3"]
+        compiled = [(re.compile(r"/music/"), "/data/")]
+        
+        result = _apply_compiled_rules_to_paths(paths, compiled)
+        
+        assert result == ["/data/album/track1.mp3", "/data/album/track2.mp3"]
+    
+    def test_apply_multiple_rules_in_order(self):
+        """测试按顺序应用多个规则"""
+        paths = ["/temp/music/file.mp3"]
+        compiled = [
+            (re.compile(r"/temp/"), "/data/"),
+            (re.compile(r"/data/"), "/storage/"),
+        ]
+        
+        result = _apply_compiled_rules_to_paths(paths, compiled)
+        
+        # Should apply both rules in sequence
+        assert result == ["/storage/music/file.mp3"]
+    
+    def test_apply_no_rules(self):
+        """测试没有规则时返回原路径"""
+        paths = ["/music/track.mp3"]
+        compiled = []
+        
+        result = _apply_compiled_rules_to_paths(paths, compiled)
+        
+        assert result == paths
+    
+    def test_apply_no_match(self):
+        """测试规则不匹配时保持原路径"""
+        paths = ["/music/track.mp3"]
+        compiled = [(re.compile(r"/video/"), "/data/")]
+        
+        result = _apply_compiled_rules_to_paths(paths, compiled)
+        
+        assert result == paths
+    
+    def test_apply_partial_match(self):
+        """测试部分路径匹配"""
+        paths = [
+            "/music/rock/song.mp3",
+            "/video/movie.mp4",
+            "/music/jazz/tune.mp3",
+        ]
+        compiled = [(re.compile(r"/music/"), "/audio/")]
+        
+        result = _apply_compiled_rules_to_paths(paths, compiled)
+        
+        assert result == [
+            "/audio/rock/song.mp3",
+            "/video/movie.mp4",
+            "/audio/jazz/tune.mp3",
+        ]
+
+
+class TestApplyRegexRulesToPaths:
+    """测试完整的路径正则替换流程（含编译）"""
+    
+    def test_simple_replacement(self):
+        """测试简单字符串替换"""
+        paths = ["/old/path/file.mp3"]
+        rules = [{"pattern": r"/old/", "replacement": "/new/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/new/path/file.mp3"]
+    
+    def test_windows_path_replacement(self):
+        """测试 Windows 路径替换"""
+        paths = [r"C:\Music\Album\track.mp3"]
+        rules = [{"pattern": r"C:\\Music", "replacement": r"D:\\Audio"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == [r"D:\Audio\Album\track.mp3"]
+    
+    def test_unc_path_replacement(self):
+        """测试 UNC 网络路径替换"""
+        paths = [r"\\server\share\music\track.mp3"]
+        rules = [
+            {"pattern": r"\\\\server\\share", "replacement": r"Z:"}
+        ]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == [r"Z:\music\track.mp3"]
+    
+    def test_case_sensitive_replacement(self):
+        """测试大小写敏感替换"""
+        paths = ["/Music/Track.mp3", "/music/track.mp3"]
+        rules = [{"pattern": r"/Music/", "replacement": "/Audio/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        # Only exact case match should be replaced
+        assert result == ["/Audio/Track.mp3", "/music/track.mp3"]
+    
+    def test_case_insensitive_replacement(self):
+        """测试大小写不敏感替换"""
+        paths = ["/Music/Track.mp3", "/music/track.mp3"]
+        rules = [{"pattern": r"(?i)/music/", "replacement": "/Audio/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/Audio/Track.mp3", "/Audio/track.mp3"]
+    
+    def test_regex_special_characters(self):
+        """测试正则特殊字符"""
+        paths = ["/music (2024)/album/track.mp3"]
+        rules = [{"pattern": r"/music \(\d+\)/", "replacement": "/music/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/music/album/track.mp3"]
+    
+    def test_capture_group_replacement(self):
+        """测试捕获组替换"""
+        paths = ["/music/2024/album/track.mp3"]
+        rules = [{"pattern": r"/music/(\d+)/", "replacement": r"/archive/\1/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/archive/2024/album/track.mp3"]
+    
+    def test_multiple_capture_groups(self):
+        """测试多个捕获组"""
+        paths = ["/music/Rock/2024/album.mp3"]
+        rules = [
+            {"pattern": r"/music/([^/]+)/(\d+)/", "replacement": r"/\2/\1/"}
+        ]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/2024/Rock/album.mp3"]
+    
+    def test_delete_pattern(self):
+        """测试删除匹配内容（替换为空）"""
+        paths = ["/music/temp/album/track.mp3"]
+        rules = [{"pattern": r"/temp", "replacement": ""}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/music/album/track.mp3"]
+    
+    def test_multiple_matches_in_path(self):
+        """测试路径中多次匹配"""
+        paths = ["/old/path/old/file.mp3"]
+        rules = [{"pattern": r"old", "replacement": "new"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        # Should replace all occurrences
+        assert result == ["/new/path/new/file.mp3"]
+    
+    def test_chained_replacements(self):
+        """测试链式替换"""
+        paths = [r"\\nas\Music\Album\track.mp3"]
+        rules = [
+            {"pattern": r"\\\\nas\\Music", "replacement": "/mnt/music"},
+            {"pattern": r"\\", "replacement": "/"},
+        ]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/mnt/music/Album/track.mp3"]
+    
+    def test_url_encoding_path(self):
+        """测试 URL 编码路径处理"""
+        paths = ["/music/artist%20name/track.mp3"]
+        rules = [{"pattern": r"%20", "replacement": " "}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/music/artist name/track.mp3"]
+    
+    def test_unicode_path(self):
+        """测试 Unicode 路径"""
+        paths = ["/音乐/专辑/歌曲.mp3"]
+        rules = [{"pattern": r"/音乐/", "replacement": "/music/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == ["/music/专辑/歌曲.mp3"]
+    
+    def test_empty_rules_list(self):
+        """测试空规则列表"""
+        paths = ["/music/track.mp3"]
+        rules = []
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == paths
+    
+    def test_empty_paths_list(self):
+        """测试空路径列表"""
+        paths = []
+        rules = [{"pattern": r"foo", "replacement": "bar"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result == []
+
+
+class TestPreprocessPlaylistText:
+    """测试预处理播放列表文本（含正则替换）"""
+    
+    def test_preprocess_with_replacements(self):
+        """测试带替换的预处理"""
+        text = """#EXTM3U
+/old/path/track1.mp3
+/old/path/track2.mp3
+"""
+        rules = [{"pattern": r"/old/", "replacement": "/new/"}]
+        
+        result = preprocess_playlist_text(text, rules)
+        
+        assert "#EXTM3U" in result
+        assert "/new/path/track1.mp3" in result
+        assert "/new/path/track2.mp3" in result
+        assert "/old/" not in result
+    
+    def test_preprocess_removes_comments(self):
+        """测试预处理移除注释"""
+        text = """#EXTM3U
+# This is a comment
+/music/track1.mp3
+#EXTINF:123,Artist - Track
+/music/track2.mp3
+"""
+        rules = []
+        
+        result = preprocess_playlist_text(text, rules)
+        lines = [l for l in result.splitlines() if l and not l.startswith("#")]
+        
+        assert len(lines) == 2
+        assert "/music/track1.mp3" in lines
+        assert "/music/track2.mp3" in lines
+    
+    def test_preprocess_empty_text(self):
+        """测试预处理空文本"""
+        text = ""
+        rules = [{"pattern": r"foo", "replacement": "bar"}]
+        
+        result = preprocess_playlist_text(text, rules)
+        
+        assert "#EXTM3U" in result
+    
+    def test_preprocess_with_blank_lines(self):
+        """测试预处理包含空行的文本"""
+        text = """#EXTM3U
+
+/music/track1.mp3
+
+
+/music/track2.mp3
+
+"""
+        rules = []
+        
+        result = preprocess_playlist_text(text, rules)
+        lines = [l for l in result.splitlines() if l and not l.startswith("#")]
+        
+        assert len(lines) == 2
+    
+    def test_preprocess_real_world_scenario(self):
+        """测试真实场景：NAS 路径转换"""
+        text = """#EXTM3U
+\\\\koha9-nas\\koha9-nas\\Music\\Rock\\track1.flac
+\\\\koha9-nas\\koha9-nas\\Music\\Jazz\\track2.mp3
+/music/cache/temp.flac
+"""
+        rules = [
+            {"pattern": r"\\\\koha9-nas\\koha9-nas\\Music", "replacement": r"N:\\Music"},
+            {"pattern": r"/music/cache/", "replacement": "/data/music/"},
+            {"pattern": r"\\", "replacement": "/"},
+        ]
+        
+        result = preprocess_playlist_text(text, rules)
+        lines = [l for l in result.splitlines() if l and not l.startswith("#")]
+        
+        # After all replacements, backslashes should be converted to forward slashes
+        assert "N:/Music/Rock/track1.flac" in lines
+        assert "N:/Music/Jazz/track2.mp3" in lines
+        assert "/data/music/temp.flac" in lines
+    
+    def test_preprocess_with_compiled_rules(self):
+        """测试使用预编译规则"""
+        text = """#EXTM3U
+/old/path/track.mp3
+"""
+        rules = [{"pattern": r"/old/", "replacement": "/new/"}]
+        compiled = _compile_regex_rules(rules)
+        
+        result = preprocess_playlist_text(text, rules, compiled_rules=compiled)
+        
+        assert "/new/path/track.mp3" in result
+    
+    def test_preprocess_preserves_order(self):
+        """测试预处理保持顺序"""
+        text = """#EXTM3U
+/path/track1.mp3
+/path/track2.mp3
+/path/track3.mp3
+"""
+        rules = [{"pattern": r"/path/", "replacement": "/new/"}]
+        
+        result = preprocess_playlist_text(text, rules)
+        lines = [l for l in result.splitlines() if l and not l.startswith("#")]
+        
+        assert lines[0] == "/new/track1.mp3"
+        assert lines[1] == "/new/track2.mp3"
+        assert lines[2] == "/new/track3.mp3"
+
+
+class TestEdgeCases:
+    """测试边界情况和异常场景"""
+    
+    def test_very_long_path(self):
+        """测试超长路径"""
+        long_path = "/music/" + "a" * 1000 + "/track.mp3"
+        paths = [long_path]
+        rules = [{"pattern": r"/music/", "replacement": "/audio/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0].startswith("/audio/")
+        assert len(result[0]) > 1000
+    
+    def test_special_characters_in_path(self):
+        """测试路径中的特殊字符"""
+        paths = [
+            "/music/artist [2024]/track (remix).mp3",
+            "/music/artist & band/song #1.mp3",
+        ]
+        rules = [{"pattern": r"/music/", "replacement": "/audio/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/audio/artist [2024]/track (remix).mp3"
+        assert result[1] == "/audio/artist & band/song #1.mp3"
+    
+    def test_dot_in_path(self):
+        """测试路径中的点号"""
+        paths = ["/music/../audio/track.mp3", "/music/./track.mp3"]
+        rules = [{"pattern": r"\.\./", "replacement": ""}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/music/audio/track.mp3"
+    
+    def test_trailing_slash(self):
+        """测试尾部斜杠"""
+        paths = ["/music/album/", "/music/track.mp3"]
+        rules = [{"pattern": r"/$", "replacement": ""}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/music/album"
+        assert result[1] == "/music/track.mp3"
+    
+    def test_duplicate_slashes(self):
+        """测试重复斜杠"""
+        paths = ["/music//album///track.mp3"]
+        rules = [{"pattern": r"/+", "replacement": "/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/music/album/track.mp3"
+    
+    def test_mixed_path_separators(self):
+        """测试混合路径分隔符"""
+        paths = [r"C:\Music/Album\track.mp3"]
+        rules = [
+            {"pattern": r"\\", "replacement": "/"},
+        ]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "C:/Music/Album/track.mp3"
+    
+    def test_regex_metacharacters_in_replacement(self):
+        """测试替换字符串中的正则元字符"""
+        paths = ["/music/track.mp3"]
+        rules = [{"pattern": r"/music/", "replacement": r"/audio$/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        # $ in replacement should be literal
+        assert result[0] == r"/audio$/track.mp3"
+    
+    def test_empty_string_replacement(self):
+        """测试替换为空字符串"""
+        paths = ["/music/temp/album/track.mp3"]
+        rules = [{"pattern": r"temp/", "replacement": ""}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/music/album/track.mp3"
+    
+    def test_replacement_creates_invalid_path(self):
+        """测试替换可能产生无效路径（但仍应执行）"""
+        paths = ["/music/track.mp3"]
+        rules = [{"pattern": r"/", "replacement": ""}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        # Should still perform replacement even if result is odd
+        assert result[0] == "musictrack.mp3"
+
+
+class TestPerformance:
+    """测试性能相关场景"""
+    
+    def test_large_playlist(self):
+        """测试大型播放列表"""
+        paths = [f"/music/track{i}.mp3" for i in range(10000)]
+        rules = [{"pattern": r"/music/", "replacement": "/audio/"}]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert len(result) == 10000
+        assert all(p.startswith("/audio/") for p in result)
+    
+    def test_many_rules(self):
+        """测试大量规则"""
+        paths = ["/music/rock/2024/album/track.mp3"]
+        rules = [
+            {"pattern": r"music", "replacement": "audio"},
+            {"pattern": r"rock", "replacement": "genre1"},
+            {"pattern": r"2024", "replacement": "year"},
+            {"pattern": r"album", "replacement": "collection"},
+            {"pattern": r"track", "replacement": "song"},
+        ]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/audio/genre1/year/collection/song.mp3"
+    
+    def test_complex_regex_pattern(self):
+        """测试复杂正则表达式"""
+        paths = [
+            "/music/Artist - Album (2024) [FLAC]/01. Track.flac",
+            "/music/Another Artist - Another Album (2023) [MP3]/02. Song.mp3",
+        ]
+        rules = [
+            {
+                "pattern": r"/music/(.+?) - (.+?) \((\d+)\) \[([^\]]+)\]/",
+                "replacement": r"/library/\4/\3/\1/\2/"
+            }
+        ]
+        
+        result = apply_regex_rules_to_paths(paths, rules)
+        
+        assert result[0] == "/library/FLAC/2024/Artist/Album/01. Track.flac"
+        assert result[1] == "/library/MP3/2023/Another Artist/Another Album/02. Song.mp3"
+
+
+if __name__ == "__main__":
+    pytest.main([__file__, "-v"])

tests/test_ui_case_mix.py

@@ -0,0 +1,291 @@
+"""
+UI 集成测试 - case_mix：清空规则、设置规则并执行四种同步策略
+
+运行前准备:
+    1. 启动Docker服务: docker compose up -d
+    2. 确保服务运行在 http://localhost:8888
+
+运行:
+    pytest tests/test_ui_case_mix.py --headed  # 显示浏览器
+    pytest tests/test_ui_case_mix.py           # 无头模式
+"""
+
+from enum import Enum
+from pathlib import Path
+import shutil
+import time
+
+from playwright.sync_api import Page, expect
+
+
+BASE_URL = "http://localhost:8888"
+
+PROJECT_ROOT = Path(__file__).parent.parent
+OUTPUT_DIR = PROJECT_ROOT / "output_playlists" / "case_mix"
+EXPECTED_DIR = PROJECT_ROOT / "test_res"
+
+
+class SyncStrategy(str, Enum):
+    """同步策略枚举"""
+    LOCAL_OVERWRITE = "LOCAL_OVERWRITE"
+    CLOUD_OVERWRITE = "CLOUD_OVERWRITE"
+    MERGE_LOCAL = "MERGE_LOCAL"
+    MERGE_CLOUD = "MERGE_CLOUD"
+
+
+def _handle_connection_modal(page: Page):
+    """处理登录模态框：如果存在则关闭"""
+    # 检查模态框是否存在 (根据 ConnectionModal.tsx 的结构)
+    # 模态框通常有一个全屏的遮罩层
+    modal_overlay = page.locator("div.fixed.inset-0.z-50")
+    
+    if modal_overlay.is_visible():
+        print("检测到登录模态框，尝试关闭...")
+        # 尝试找到关闭按钮 (通常在右上角，包含 X 图标)
+        # 在 ConnectionModal.tsx 中，关闭按钮在 Header 里
+        close_button = modal_overlay.locator("button").filter(has=page.locator("svg")).last
+        
+        if close_button.is_visible():
+            close_button.click()
+        else:
+            # 如果找不到关闭按钮，尝试按 ESC
+            page.keyboard.press("Escape")
+        
+        page.wait_for_timeout(500)  # 等待模态框关闭动画
+
+
+def _open_strategy_selector(page: Page):
+    """打开策略选择器下拉菜单"""
+    # 1. 先处理可能遮挡的登录模态框
+    _handle_connection_modal(page)
+    
+    # 2. 检查下拉菜单是否已经打开
+    # 下拉菜单的特征类名
+    dropdown = page.locator("div.absolute.top-14")
+    
+    if dropdown.is_visible():
+        return  # 已经打开，无需操作
+
+    # 3. 查找并点击策略选择器按钮
+    # 使用 title 属性定位更准确 (StrategySelector.tsx 中定义了 title="Current Strategy: ...")
+    strategy_button = page.locator("button[title^='Current Strategy']")
+    
+    if strategy_button.count() == 0:
+        # 备用定位方式：查找包含特定图标的圆形按钮
+        # 注意：页面上可能有多个按钮，需要小心
+        # 策略按钮在中间，且包含 ChevronDown 小图标
+        strategy_button = page.locator("button").filter(has=page.locator("svg")).nth(1) 
+        # nth(0) 可能是 Header 里的连接按钮
+    
+    if strategy_button.is_visible():
+        strategy_button.click()
+        page.wait_for_timeout(300)  # 等待下拉菜单动画完成
+    else:
+        print("警告: 无法找到策略选择器按钮")
+
+
+def _clear_all_rules(page: Page):
+    """清空所有正则规则"""
+    _open_strategy_selector(page)
+    
+    # 等待下拉菜单打开
+    dropdown = page.locator("div.absolute.top-14")
+    expect(dropdown).to_be_visible()
+    
+    # 查找并点击所有删除按钮
+    delete_buttons = page.locator("button[title='Delete Rule']")
+    while delete_buttons.count() > 0:
+        try:
+            delete_buttons.first.click()
+            page.wait_for_timeout(100)
+        except Exception:
+            break
+    
+    # 关闭下拉菜单
+    page.keyboard.press("Escape")
+    page.wait_for_timeout(200)
+
+
+def _normalize_playlist_lines(file_path: Path) -> list[str]:
+    """读取播放列表并返回规范化曲目路径列表（忽略注释与空行）"""
+    if not file_path.exists():
+        return []
+    with open(file_path, "r", encoding="utf-8") as f:
+        lines = [
+            line.strip()
+            for line in f
+            if line.strip() and not line.startswith("#")
+        ]
+    return lines
+
+
+def _compare_playlists(actual: Path, expected: Path) -> tuple[bool, str]:
+    """对比实际输出与期望结果，返回 (是否匹配, 差异描述)"""
+    actual_lines = _normalize_playlist_lines(actual)
+    expected_lines = _normalize_playlist_lines(expected)
+    
+    if actual_lines == expected_lines:
+        return True, ""
+    
+    # 生成差异报告
+    diff_lines = []
+    diff_lines.append(f"实际曲目数: {len(actual_lines)}, 期望曲目数: {len(expected_lines)}")
+    
+    only_actual = set(actual_lines) - set(expected_lines)
+    only_expected = set(expected_lines) - set(actual_lines)
+    
+    if only_actual:
+        diff_lines.append(f"仅在实际输出中: {only_actual}")
+    if only_expected:
+        diff_lines.append(f"仅在期望结果中: {only_expected}")
+    
+    return False, "\n".join(diff_lines)
+
+
+def test_case_mix_run_all_modes(page: Page):
+    """
+    1) 清空当前正则规则
+    2) 填写并保存 case_mix 所用规则
+    3) 依次执行四种同步策略，每次同步后立即验证输出并与期望对比
+    """
+    # 导航到首页并确认加载（端口为 8080）
+    page.goto(BASE_URL + "/")
+    page.wait_for_load_state("networkidle")
+    page.wait_for_timeout(1000)  # 等待React应用初始化
+    expect(page).to_have_url(BASE_URL + "/")
+
+    # 处理可能出现的登录模态框
+    _handle_connection_modal(page)
+
+    # 1. 清空规则
+    _clear_all_rules(page)
+
+    # 2. 添加并保存 case_mix 所用规则（顺序很重要）
+    rules = [
+        (r"^\\\\koha9-nas\\koha9-nas\\Music", r"N:\\Music"),  # UNC 到盘符
+        (r"^/mnt/music", r"N:\\Music"),                            # Linux 挂载到盘符
+        (r"(?i)^N:\\MUSIC", r"N:\\Music"),                      # 大小写规范化
+        (r"/", r"\\"),                                           # 斜杠统一为反斜杠（需在映射后）
+    ]
+
+    # 打开策略选择器
+    _open_strategy_selector(page)
+    
+    # 添加规则
+    for pattern, replacement in rules:
+        # 点击 "Add Rule" 按钮
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            # 如果没有"Add Rule"按钮,尝试使用带文本的按钮
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        add_button.click()
+        page.wait_for_timeout(200)
+        
+        # 填写最后一组输入框
+        pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+        replacement_inputs = page.locator("input[placeholder='Replacement']")
+        
+        pattern_inputs.last.fill(pattern)
+        replacement_inputs.last.fill(replacement)
+        page.wait_for_timeout(100)
+
+    # 保存规则 - 点击 "Save Changes" 按钮
+    save_button = page.locator("button:has-text('Save Changes')")
+    expect(save_button).to_be_enabled()
+    save_button.click()
+    page.wait_for_timeout(500)  # 等待保存完成
+    
+    # 验证保存成功 - 检查toast通知
+    toast = page.locator("div:has-text('Regex preprocessing rules have been saved')")
+    if toast.count() > 0:
+        expect(toast.first).to_be_visible()
+    
+    # 关闭下拉菜单
+    page.keyboard.press("Escape")
+    page.wait_for_timeout(300)
+
+    # 3. 依次执行四种同步模式，每次执行后立即验证
+    # 策略名称映射: UI中的策略值 -> 测试用例名称
+    strategy_mappings = [
+        (SyncStrategy.LOCAL_OVERWRITE, "Local Overwrite", "case_mix_local_force.m3u"),
+        (SyncStrategy.CLOUD_OVERWRITE, "Cloud Overwrite", "case_mix_remote_force.m3u"),
+        (SyncStrategy.MERGE_LOCAL, "Two-way Merge (Local Priority)", "case_mix_merge_local_primary.m3u"),
+        (SyncStrategy.MERGE_CLOUD, "Two-way Merge (Cloud Priority)", "case_mix_merge_remote_primary.m3u"),
+    ]
+    
+    # 准备初始 Base（每次测试前恢复）
+    initial_base_content = """#EXTM3U
+N:\\Music\\Anime\\New PANTY & STOCKING with GARTERBELT\\Theme of New PANTY & STOCKING\\02. Reckless - Theme of New PANTY & STOCKING.flac
+N:\\Music\\Anime\\CITY THE ANIMATION\\Hello\\01. Hello - Hello.flac
+N:\\Music\\音ゲー\\USAO\\MEMORIES\\15. Empty Room (Srav3R Remix) - MEMORIES.flac
+"""
+
+    for strategy_value, strategy_label, expected_file in strategy_mappings:
+        print(f"\n==== 执行同步策略: {strategy_label} ====")
+        
+        # 恢复初始 Base（避免前次同步影响）
+        base_next_path = OUTPUT_DIR / "base_next.m3u8"
+        OUTPUT_DIR.mkdir(parents=True, exist_ok=True)
+        with open(base_next_path, "w", encoding="utf-8") as f:
+            f.write(initial_base_content)
+        print(f"已恢复初始 Base: {base_next_path}")
+        
+        # 选择策略 - 打开下拉菜单
+        _open_strategy_selector(page)
+        
+        # 点击对应的策略选项 - 更精确的定位
+        # 找到包含策略名称的可点击div (class包含cursor-pointer)
+        strategy_option = page.locator("div.cursor-pointer").filter(has_text=strategy_label)
+        expect(strategy_option.first).to_be_visible()
+        strategy_option.first.click()
+        page.wait_for_timeout(500)  # 等待策略保存
+        
+        # 验证策略选择成功的toast
+        toast = page.locator(f"div:has-text('Selected strategy \"{strategy_label}\" has been saved')")
+        if toast.count() > 0:
+            expect(toast.first).to_be_visible(timeout=3000)
+        
+        # 关闭下拉菜单
+        page.keyboard.press("Escape")
+        page.wait_for_timeout(300)
+        
+        # 执行同步 - 通过API触发同步操作
+        # 新UI需要显式调用同步API
+        import requests
+        sync_response = requests.post(
+            f"{BASE_URL}/api/sync",
+            json={"mode": None}  # 使用当前配置的策略
+        )
+        assert sync_response.status_code == 200, f"同步API调用失败: {sync_response.text}"
+        print(f"同步API响应: {sync_response.json()}")
+        
+        time.sleep(1)  # 确保文件写入完成
+        
+        # 验证输出文件生成
+        local_result = OUTPUT_DIR / "local_result.m3u8"
+        remote_result = OUTPUT_DIR / "remote_result.m3u8"
+        base_next = OUTPUT_DIR / "base_next.m3u8"
+        
+        assert local_result.exists(), f"{strategy_label}: local_result.m3u8 未生成"
+        assert remote_result.exists(), f"{strategy_label}: remote_result.m3u8 未生成"
+        assert base_next.exists(), f"{strategy_label}: base_next.m3u8 未生成"
+        
+        # 与期望结果对比（使用 local_result.m3u8 作为主要输出）
+        expected_path = EXPECTED_DIR / expected_file
+        match, diff = _compare_playlists(local_result, expected_path)
+        
+        # 备份当前输出以便后续检查
+        backup_dir = OUTPUT_DIR / f"backup_{strategy_value}"
+        backup_dir.mkdir(exist_ok=True)
+        shutil.copy(local_result, backup_dir / "local_result.m3u8")
+        shutil.copy(remote_result, backup_dir / "remote_result.m3u8")
+        shutil.copy(base_next, backup_dir / "base_next.m3u8")
+        
+        print(f"输出已备份到: {backup_dir}")
+        
+        # 断言匹配
+        assert match, f"{strategy_label} 输出与期望不符:\n{diff}"
+        print(f"✓ {strategy_label} 验证通过")
+
+    print("\n==== 全部四种策略测试通过 ====")

tests/test_ui_regex_rules.py

@@ -0,0 +1,566 @@
+"""
+UI 集成测试 - 使用 Playwright 测试正则路径替换功能
+
+运行前准备:
+    1. 启动Docker服务: docker compose up -d
+    2. 确保服务运行在 http://localhost:8888
+
+安装:
+    pip install pytest-playwright
+    playwright install
+
+运行:
+    pytest tests/test_ui_regex_rules.py --headed  # 显示浏览器
+    pytest tests/test_ui_regex_rules.py           # 无头模式
+"""
+
+import re
+import time
+from pathlib import Path
+
+import pytest
+from playwright.sync_api import Page, expect
+
+
+# 测试服务器地址 - Docker映射端口
+BASE_URL = "http://localhost:8888"
+
+
+@pytest.fixture(scope="session")
+def test_server():
+    """启动测试服务器（可选，如果服务器未运行）"""
+    # 如果你的服务器已经在运行，直接返回
+    # 否则可以在这里启动服务器进程
+    yield BASE_URL
+
+
+@pytest.fixture
+def page(page: Page, test_server):
+    """配置页面并导航到首页"""
+    page.goto(test_server)
+    page.wait_for_load_state("networkidle")
+    return page
+
+
+class TestRegexRulesUI:
+    """测试正则路径替换规则的 UI 交互 - 适配新React UI"""
+    
+    def _handle_connection_modal(self, page: Page):
+        """处理登录模态框"""
+        modal_overlay = page.locator("div.fixed.inset-0.z-50")
+        if modal_overlay.is_visible():
+            close_button = modal_overlay.locator("button").filter(has=page.locator("svg")).last
+            if close_button.is_visible():
+                close_button.click()
+            else:
+                page.keyboard.press("Escape")
+            page.wait_for_timeout(500)
+
+    def _open_strategy_selector(self, page: Page):
+        """打开策略选择器下拉菜单"""
+        self._handle_connection_modal(page)
+        
+        dropdown = page.locator("div.absolute.top-14")
+        if dropdown.is_visible():
+            return
+
+        strategy_button = page.locator("button[title^='Current Strategy']")
+        if strategy_button.count() == 0:
+            strategy_button = page.locator("button").filter(has=page.locator("svg")).nth(1)
+            
+        if strategy_button.is_visible():
+            strategy_button.click()
+            page.wait_for_timeout(300)
+    
+    def _close_strategy_selector(self, page: Page):
+        """关闭策略选择器"""
+        page.keyboard.press("Escape")
+        page.wait_for_timeout(200)
+    
+    def test_page_loads_successfully(self, page: Page):
+        """测试页面成功加载"""
+        expect(page).to_have_title(re.compile("Plex.*Sync", re.I))
+        
+        # 检查关键元素存在 - 新UI的主要元素
+        # 检查策略选择器按钮存在
+        strategy_button = page.locator("button").filter(has=page.locator("svg")).first
+        expect(strategy_button).to_be_visible()
+    
+    def test_add_single_rule(self, page: Page):
+        """测试添加单个规则"""
+        # 打开策略选择器
+        self._open_strategy_selector(page)
+        
+        # 等待下拉菜单可见
+        dropdown = page.locator("div.absolute.top-14")
+        expect(dropdown).to_be_visible()
+        
+        # 获取初始规则数量
+        initial_count = page.locator("input[placeholder='Regex Pattern']").count()
+        
+        # 点击添加规则按钮
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        add_button.click()
+        page.wait_for_timeout(200)
+        
+        # 验证规则数量增加
+        new_count = page.locator("input[placeholder='Regex Pattern']").count()
+        assert new_count == initial_count + 1
+        
+        # 填写规则内容
+        pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+        replacement_inputs = page.locator("input[placeholder='Replacement']")
+        
+        pattern_inputs.last.fill(r"/old/path/")
+        replacement_inputs.last.fill(r"/new/path/")
+        
+        # 验证填写成功
+        assert pattern_inputs.last.input_value() == r"/old/path/"
+        assert replacement_inputs.last.input_value() == r"/new/path/"
+        
+        self._close_strategy_selector(page)
+    
+    def test_add_multiple_rules(self, page: Page):
+        """测试添加多个规则"""
+        self._open_strategy_selector(page)
+        
+        rules = [
+            (r"\\\\nas\\Music", r"N:\\Music"),
+            (r"/music/cache/", r"/data/music/"),
+            (r"\\", r"/"),
+        ]
+        
+        # 添加多个规则
+        for pattern, replacement in rules:
+            add_button = page.locator("button[title='Add Rule']")
+            if add_button.count() == 0:
+                add_button = page.locator("button:has-text('Add Rule')")
+            
+            add_button.click()
+            page.wait_for_timeout(200)
+            
+            pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+            replacement_inputs = page.locator("input[placeholder='Replacement']")
+            
+            pattern_inputs.last.fill(pattern)
+            replacement_inputs.last.fill(replacement)
+        
+        # 验证所有规则都已添加
+        pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+        assert pattern_inputs.count() >= len(rules)
+        
+        # 验证规则内容
+        for i in range(len(rules)):
+            idx = pattern_inputs.count() - len(rules) + i
+            assert rules[i][0] in pattern_inputs.nth(idx).input_value()
+        
+        self._close_strategy_selector(page)
+    
+    def test_remove_rule(self, page: Page):
+        """测试删除规则"""
+        self._open_strategy_selector(page)
+        
+        # 获取初始规则数量
+        initial_count = page.locator("input[placeholder='Regex Pattern']").count()
+        
+        # 添加一个规则
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        add_button.click()
+        page.wait_for_timeout(200)
+        
+        new_count = page.locator("input[placeholder='Regex Pattern']").count()
+        assert new_count == initial_count + 1
+        
+        # 找到删除按钮（最后一个规则的删除按钮）
+        remove_buttons = page.locator("button[title='Delete Rule']")
+        if remove_buttons.count() > 0:
+            remove_buttons.last.click()
+            page.wait_for_timeout(200)
+            
+            # 验证规则已删除
+            final_count = page.locator("input[placeholder='Regex Pattern']").count()
+            assert final_count == initial_count
+        
+        self._close_strategy_selector(page)
+    
+    def test_save_rules(self, page: Page):
+        """测试保存规则"""
+        self._open_strategy_selector(page)
+        
+        # 清除现有规则
+        delete_buttons = page.locator("button[title='Delete Rule']")
+        while delete_buttons.count() > 0:
+            delete_buttons.first.click()
+            page.wait_for_timeout(100)
+            delete_buttons = page.locator("button[title='Delete Rule']")
+        
+        # 添加测试规则
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        add_button.click()
+        page.wait_for_timeout(200)
+        
+        pattern_input = page.locator("input[placeholder='Regex Pattern']").last
+        replacement_input = page.locator("input[placeholder='Replacement']").last
+        
+        test_pattern = r"/test/path/"
+        test_replacement = r"/new/path/"
+        
+        pattern_input.fill(test_pattern)
+        replacement_input.fill(test_replacement)
+        page.wait_for_timeout(100)
+        
+        # 点击保存按钮
+        save_button = page.locator("button:has-text('Save Changes')")
+        expect(save_button).to_be_enabled()
+        save_button.click()
+        page.wait_for_timeout(500)
+        
+        # 验证成功消息
+        toast = page.locator("div:has-text('Regex preprocessing rules have been saved')")
+        if toast.count() > 0:
+            expect(toast.first).to_be_visible(timeout=3000)
+        
+        self._close_strategy_selector(page)
+    
+    def test_rules_persist_after_save(self, page: Page):
+        """测试规则保存后持久化"""
+        self._open_strategy_selector(page)
+        
+        # 清除并添加新规则
+        delete_buttons = page.locator("button[title='Delete Rule']")
+        while delete_buttons.count() > 0:
+            delete_buttons.first.click()
+            page.wait_for_timeout(100)
+            delete_buttons = page.locator("button[title='Delete Rule']")
+        
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        add_button.click()
+        page.wait_for_timeout(200)
+        
+        test_pattern = r"C:\\Music"
+        test_replacement = r"D:\\Audio"
+        
+        page.locator("input[placeholder='Regex Pattern']").last.fill(test_pattern)
+        page.locator("input[placeholder='Replacement']").last.fill(test_replacement)
+        page.wait_for_timeout(100)
+        
+        # 保存
+        save_button = page.locator("button:has-text('Save Changes')")
+        save_button.click()
+        page.wait_for_timeout(500)
+        
+        self._close_strategy_selector(page)
+        
+        # 刷新页面
+        page.reload()
+        page.wait_for_load_state("networkidle")
+        page.wait_for_timeout(1000)
+        
+        # 重新打开策略选择器
+        self._open_strategy_selector(page)
+        
+        # 验证规则仍然存在
+        pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+        
+        # 检查是否有匹配的规则
+        found = False
+        for i in range(pattern_inputs.count()):
+            if test_pattern in pattern_inputs.nth(i).input_value():
+                found = True
+                # 验证对应的替换值
+                replacement_inputs = page.locator("input[placeholder='Replacement']")
+                replacement_value = replacement_inputs.nth(i).input_value()
+                assert test_replacement in replacement_value
+                break
+        
+        assert found, f"未找到保存的规则: {test_pattern}"
+        
+        self._close_strategy_selector(page)
+    
+    def test_empty_pattern_validation(self, page: Page):
+        """测试空模式验证 - 新UI在保存时会过滤空规则"""
+        self._open_strategy_selector(page)
+        
+        # 添加规则但不填写
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        add_button.click()
+        page.wait_for_timeout(200)
+        
+        # 只填写替换，不填写模式
+        replacement_input = page.locator("input[placeholder='Replacement']").last
+        replacement_input.fill("/new/path/")
+        page.wait_for_timeout(100)
+        
+        # 尝试保存 - 新UI会自动过滤空模式的规则
+        save_button = page.locator("button:has-text('Save Changes')")
+        if save_button.is_enabled():
+            initial_count = page.locator("input[placeholder='Regex Pattern']").count()
+            save_button.click()
+            page.wait_for_timeout(500)
+            
+            # 验证空规则被过滤（如果实现了这个逻辑）
+            # 注意: 这取决于后端实现
+        
+        self._close_strategy_selector(page)
+    
+    def test_rule_order_preserved(self, page: Page):
+        """测试规则顺序保持"""
+        self._open_strategy_selector(page)
+        
+        # 清除现有规则
+        delete_buttons = page.locator("button[title='Delete Rule']")
+        while delete_buttons.count() > 0:
+            delete_buttons.first.click()
+            page.wait_for_timeout(100)
+            delete_buttons = page.locator("button[title='Delete Rule']")
+        
+        # 按顺序添加多个规则
+        rules = [
+            ("rule1", "replacement1"),
+            ("rule2", "replacement2"),
+            ("rule3", "replacement3"),
+        ]
+        
+        for pattern, replacement in rules:
+            add_button = page.locator("button[title='Add Rule']")
+            if add_button.count() == 0:
+                add_button = page.locator("button:has-text('Add Rule')")
+            
+            add_button.click()
+            page.wait_for_timeout(200)
+            
+            page.locator("input[placeholder='Regex Pattern']").last.fill(pattern)
+            page.locator("input[placeholder='Replacement']").last.fill(replacement)
+            page.wait_for_timeout(100)
+        
+        # 验证顺序
+        pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+        count = pattern_inputs.count()
+        
+        for i, (pattern, _) in enumerate(rules):
+            idx = count - len(rules) + i
+            assert pattern in pattern_inputs.nth(idx).input_value()
+        
+        self._close_strategy_selector(page)
+
+
+class TestComplexScenarios:
+    """测试复杂场景"""
+    
+    def _handle_connection_modal(self, page: Page):
+        """处理登录模态框"""
+        modal_overlay = page.locator("div.fixed.inset-0.z-50")
+        if modal_overlay.is_visible():
+            close_button = modal_overlay.locator("button").filter(has=page.locator("svg")).last
+            if close_button.is_visible():
+                close_button.click()
+            else:
+                page.keyboard.press("Escape")
+            page.wait_for_timeout(500)
+
+    def _open_strategy_selector(self, page: Page):
+        """打开策略选择器下拉菜单"""
+        self._handle_connection_modal(page)
+        
+        dropdown = page.locator("div.absolute.top-14")
+        if dropdown.is_visible():
+            return
+
+        strategy_button = page.locator("button[title^='Current Strategy']")
+        if strategy_button.count() == 0:
+            strategy_button = page.locator("button").filter(has=page.locator("svg")).nth(1)
+            
+        if strategy_button.is_visible():
+            strategy_button.click()
+            page.wait_for_timeout(300)
+    
+    def _close_strategy_selector(self, page: Page):
+        """关闭策略选择器"""
+        page.keyboard.press("Escape")
+        page.wait_for_timeout(200)
+    
+    def test_windows_to_linux_path_conversion(self, page: Page):
+        """测试 Windows 到 Linux 路径转换场景"""
+        self._open_strategy_selector(page)
+        
+        # 清除规则
+        delete_buttons = page.locator("button[title='Delete Rule']")
+        while delete_buttons.count() > 0:
+            delete_buttons.first.click()
+            page.wait_for_timeout(100)
+            delete_buttons = page.locator("button[title='Delete Rule']")
+        
+        # 添加转换规则
+        conversion_rules = [
+            (r"C:\\Music", r"/mnt/music"),
+            (r"\\", r"/"),
+        ]
+        
+        for pattern, replacement in conversion_rules:
+            add_button = page.locator("button[title='Add Rule']")
+            if add_button.count() == 0:
+                add_button = page.locator("button:has-text('Add Rule')")
+            
+            add_button.click()
+            page.wait_for_timeout(200)
+            
+            page.locator("input[placeholder='Regex Pattern']").last.fill(pattern)
+            page.locator("input[placeholder='Replacement']").last.fill(replacement)
+            page.wait_for_timeout(100)
+        
+        # 保存
+        save_button = page.locator("button:has-text('Save Changes')")
+        save_button.click()
+        page.wait_for_timeout(500)
+        
+        # 验证保存成功
+        toast = page.locator("div:has-text('Regex preprocessing rules have been saved')")
+        if toast.count() > 0:
+            expect(toast.first).to_be_visible(timeout=3000)
+        
+        self._close_strategy_selector(page)
+    
+    def test_nas_path_normalization(self, page: Page):
+        """测试 NAS 路径规范化"""
+        self._open_strategy_selector(page)
+        
+        # 清除规则
+        delete_buttons = page.locator("button[title='Delete Rule']")
+        while delete_buttons.count() > 0:
+            delete_buttons.first.click()
+            page.wait_for_timeout(100)
+            delete_buttons = page.locator("button[title='Delete Rule']")
+        
+        # NAS 路径规范化规则
+        nas_rules = [
+            (r"\\\\koha9-nas\\koha9-nas\\Music", r"N:\\Music"),
+            (r"/music/cache/", r"/data/music/"),
+            (r"\\", r"/"),
+        ]
+        
+        for pattern, replacement in nas_rules:
+            add_button = page.locator("button[title='Add Rule']")
+            if add_button.count() == 0:
+                add_button = page.locator("button:has-text('Add Rule')")
+            
+            add_button.click()
+            page.wait_for_timeout(200)
+            
+            page.locator("input[placeholder='Regex Pattern']").last.fill(pattern)
+            page.locator("input[placeholder='Replacement']").last.fill(replacement)
+            page.wait_for_timeout(100)
+        
+        # 保存并验证
+        save_button = page.locator("button:has-text('Save Changes')")
+        save_button.click()
+        page.wait_for_timeout(500)
+        
+        # 验证成功
+        toast = page.locator("div:has-text('Regex preprocessing rules have been saved')")
+        if toast.count() > 0:
+            expect(toast.first).to_be_visible(timeout=3000)
+        
+        self._close_strategy_selector(page)
+        page.wait_for_load_state("networkidle")
+        
+        # 刷新验证持久化
+        page.reload()
+        page.wait_for_load_state("networkidle")
+        
+        # 重新打开策略选择器
+        self._open_strategy_selector(page)
+
+        # 验证所有规则都保存了
+        pattern_inputs = page.locator("input[placeholder='Regex Pattern']")
+        saved_patterns = [pattern_inputs.nth(i).input_value() for i in range(pattern_inputs.count())]
+        
+        for pattern, _ in nas_rules:
+            assert any(pattern in saved for saved in saved_patterns), f"规则未保存: {pattern}"
+
+
+@pytest.mark.slow
+class TestPerformance:
+    """性能测试"""
+    
+    def _handle_connection_modal(self, page: Page):
+        """处理登录模态框"""
+        modal_overlay = page.locator("div.fixed.inset-0.z-50")
+        if modal_overlay.is_visible():
+            close_button = modal_overlay.locator("button").filter(has=page.locator("svg")).last
+            if close_button.is_visible():
+                close_button.click()
+            else:
+                page.keyboard.press("Escape")
+            page.wait_for_timeout(500)
+
+    def _open_strategy_selector(self, page: Page):
+        """打开策略选择器下拉菜单"""
+        self._handle_connection_modal(page)
+        
+        dropdown = page.locator("div.absolute.top-14")
+        if dropdown.is_visible():
+            return
+
+        strategy_button = page.locator("button[title^='Current Strategy']")
+        if strategy_button.count() == 0:
+            strategy_button = page.locator("button").filter(has=page.locator("svg")).nth(1)
+            
+        if strategy_button.is_visible():
+            strategy_button.click()
+            page.wait_for_timeout(300)
+    
+    def test_add_many_rules_performance(self, page: Page):
+        """测试添加大量规则的性能"""
+        self._open_strategy_selector(page)
+        
+        # 清除规则
+        delete_buttons = page.locator("button[title='Delete Rule']")
+        while delete_buttons.count() > 0:
+            delete_buttons.first.click()
+            page.wait_for_timeout(50)
+            delete_buttons = page.locator("button[title='Delete Rule']")
+        
+        # 测试添加 20 个规则
+        add_button = page.locator("button[title='Add Rule']")
+        if add_button.count() == 0:
+            add_button = page.locator("button:has-text('Add Rule')")
+        
+        start_time = time.time()
+        for i in range(20):
+            # 重新定位按钮以确保引用的有效性
+            current_add_btn = page.locator("button[title='Add Rule']")
+            if current_add_btn.count() == 0:
+                current_add_btn = page.locator("button:has-text('Add Rule')")
+            
+            current_add_btn.click()
+            # 给一点时间让 React 更新 DOM，避免操作过快导致浏览器崩溃或状态不同步
+            page.wait_for_timeout(100) 
+            
+            page.locator("input[placeholder='Regex Pattern']").last.fill(f"pattern{i}")
+            page.locator("input[placeholder='Replacement']").last.fill(f"replacement{i}")
+        
+        end_time = time.time()
+        
+        # 验证时间合理
+        elapsed = end_time - start_time
+        assert elapsed < 20, f"添加 20 个规则耗时过长: {elapsed:.2f}s"        # 验证数量
+        assert page.locator("input[placeholder='Regex Pattern']").count() >= 20
+
+
+if __name__ == "__main__":
+    pytest.main([__file__, "-v", "--headed"])