feat(app): add frontend url configuration

app/config.py

@@ -67,6 +67,7 @@ class Settings(BaseSettings):
     private_api_secret: str = "your_private_api_secret_here"
     cors_urls: list[HttpUrl] = []
     server_url: HttpUrl = HttpUrl("http://localhost:8000")
+    frontend_url: HttpUrl | None = None
 
     # SignalR 设置
     signalr_negotiate_timeout: int = 30

app/router/__init__.py

@@ -6,6 +6,7 @@ from .auth import router as auth_router
 from .fetcher import fetcher_router as fetcher_router
 from .file import file_router as file_router
 from .private import private_router as private_router
+from .redirect import redirect_router as redirect_router
 from .v2.router import router as api_v2_router
 
 __all__ = [
@@ -14,5 +15,6 @@ __all__ = [
     "fetcher_router",
     "file_router",
     "private_router",
+    "redirect_router",
     "signalr_router",
 ]

app/router/redirect.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+import urllib.parse
+
+from app.config import settings
+
+from fastapi import APIRouter, Request
+from fastapi.responses import RedirectResponse
+
+redirect_router = APIRouter(include_in_schema=False)
+
+
+@redirect_router.get("/users/{user_id}")
+@redirect_router.get("/u/{user_id}")
+@redirect_router.get("/b/{beatmap_id}")
+@redirect_router.get("/s/{beatmapset_id}")
+@redirect_router.get("/beatmapsets/{path:path}")
+@redirect_router.get("/multiplayer/rooms/{room_id}")
+async def redirect(request: Request):
+    return RedirectResponse(
+        urllib.parse.urljoin(str(settings.frontend_url), request.url.path),
+        status_code=301,
+    )