Sync all playlists and track deletions

app/main.py

@@ -1,6 +1,7 @@
 import os
 from typing import Tuple
 from app.utils.config import server_config
+from app.utils.playlist_merge import SyncMode, sync_all_playlists, TEST_PLAYLIST_DIR
 from fastapi import FastAPI, Request, Form
 from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
@@ -23,6 +24,30 @@ app.mount(
 )
 
 
+SYNC_MODE_OPTIONS = [
+    {
+        "value": SyncMode.LOCAL_FORCE.value,
+        "label": "完全本地优先（local_force）",
+        "description": "单向同步，本地覆盖云端且顺序以本地为准。",
+    },
+    {
+        "value": SyncMode.REMOTE_FORCE.value,
+        "label": "完全云端优先（remote_force）",
+        "description": "单向同步，云端覆盖本地且顺序以云端为准。",
+    },
+    {
+        "value": SyncMode.MERGE_LOCAL_PRIMARY.value,
+        "label": "双向合并（本地优先）",
+        "description": "三方合并，冲突时选择本地版本。",
+    },
+    {
+        "value": SyncMode.MERGE_REMOTE_PRIMARY.value,
+        "label": "双向合并（云端优先）",
+        "description": "三方合并，冲突时选择云端版本。",
+    },
+]
+
+
 def _get_cloud_playlists() -> Tuple[list[dict], str, dict]:
     """Fetch playlists and connection state from the remote Plex server."""
 
@@ -74,27 +99,96 @@ def _get_cloud_playlists() -> Tuple[list[dict], str, dict]:
     playlists.sort(key=lambda item: item["name"].lower())
     return playlists, status, server_info
 
-
-# 显示主页
-@app.get("/", response_class=HTMLResponse)
-async def home(request: Request, local_path: str = "playlist"):
+def _build_home_context(
+    request: Request,
+    local_path: str,
+    message: str | None = None,
+    message_type: str | None = None,
+    sync_result: dict | None = None,
+    selected_mode: str | None = None,
+):
     server_config.load()
     local_playlists = scan_local_playlists(local_path)
     cloud_playlists, connection_status, server_info = _get_cloud_playlists()
 
-    return templates.TemplateResponse(
-        "home.html",
-        {
-            "request": request,
-            "theme": server_config.theme,
-            "path": "/",
-            "local_playlists": local_playlists,
-            "local_path": local_path,
-            "cloud_playlists": cloud_playlists,
-            "connection_status": connection_status,
-            "server_info": server_info,
-        },
-    )
+    return {
+        "request": request,
+        "theme": server_config.theme,
+        "path": "/",
+        "local_playlists": local_playlists,
+        "local_path": local_path,
+        "cloud_playlists": cloud_playlists,
+        "connection_status": connection_status,
+        "server_info": server_info,
+        "sync_modes": SYNC_MODE_OPTIONS,
+        "selected_mode": selected_mode,
+        "message": message,
+        "message_type": message_type,
+        "sync_result": sync_result,
+    }
+
+
+# 显示主页
+@app.get("/", response_class=HTMLResponse)
+async def home(request: Request, local_path: str = "playlist"):
+    context = _build_home_context(request, local_path)
+
+    return templates.TemplateResponse("home.html", context)
+
+
+@app.post("/sync", response_class=HTMLResponse)
+async def trigger_sync(request: Request, mode: str = Form(...), local_path: str = Form("playlist")):
+    try:
+        sync_mode = SyncMode(mode)
+    except ValueError:
+        context = _build_home_context(
+            request,
+            local_path,
+            message=f"未知的同步策略：{mode}",
+            message_type="danger",
+            selected_mode=mode,
+        )
+        return templates.TemplateResponse("home.html", context)
+
+    try:
+        results = sync_all_playlists(
+            local_dir=local_path,
+            mode=sync_mode,
+            test_folder=TEST_PLAYLIST_DIR,
+        )
+        merged_count = sum(len(item.merged_paths) for item in results)
+        conflict_count = sum(len(item.conflicts) for item in results)
+        deleted_count = sum(1 for item in results if item.action == "deleted")
+        context = _build_home_context(
+            request,
+            local_path,
+            message="同步完成，输出已写入测试目录用于验证。",
+            message_type="success",
+            sync_result={
+                "mode": sync_mode.value,
+                "mode_label": next(
+                    (item["label"] for item in SYNC_MODE_OPTIONS if item["value"] == sync_mode.value),
+                    sync_mode.value,
+                ),
+                "merged_count": merged_count,
+                "conflict_count": conflict_count,
+                "delete_count": deleted_count,
+                "playlist_count": len(results),
+                "output_dir": TEST_PLAYLIST_DIR,
+            },
+            selected_mode=sync_mode.value,
+        )
+        return templates.TemplateResponse("home.html", context)
+    except Exception as exc:
+        logger.warning(f"Sync failed: {exc}")
+        context = _build_home_context(
+            request,
+            local_path,
+            message=f"同步失败：{exc}",
+            message_type="danger",
+            selected_mode=sync_mode.value,
+        )
+        return templates.TemplateResponse("home.html", context)
 
 
 # 登录页面和处理