logger added.

plex_client method naming fix.

app/main.py

@@ -5,6 +5,7 @@ from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
 from fastapi.staticfiles import StaticFiles
 from app.utils.plex_client import plex_client
+from app.utils.logger import logger
 
 app = FastAPI()
 templates = Jinja2Templates(
@@ -79,7 +80,7 @@ async def login(
         )
         # 成功连接后保存配置到配置文件
         if plex_client.connected:
-            server_config.set_config(
+            server_config.set_and_save_config(
                 token=token_success, scheme=scheme, url=url, port=port
             )
         return templates.TemplateResponse(
@@ -139,5 +140,5 @@ async def set_playlist(
 
 @app.post("/set-theme")
 async def set_theme(theme: str = Form(...)):
-    server_config.set_config(theme=theme)
+    server_config.set_and_save_config(theme=theme)
     return RedirectResponse("/login", status_code=303)