Initial commit: 网页联机狼人杀（FastAPI+WebSocket 后端 / React+TS+Sass 前端）

backend/app/main.py

@@ -0,0 +1,101 @@
+"""FastAPI 入口：REST 接口 + WebSocket 端点 + 托管前端构建产物。"""
+from __future__ import annotations
+
+from pathlib import Path
+
+import uvicorn
+from fastapi import FastAPI, HTTPException, WebSocket, WebSocketDisconnect
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import FileResponse
+from pydantic import BaseModel
+
+from .config import CONFIG
+from .game.room import MANAGER
+
+app = FastAPI(title="狼人杀", version="0.1.0")
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+ROOT = Path(__file__).resolve().parents[2]
+DIST = ROOT / "frontend" / "dist"
+
+
+# ---------------------------------------------------------------- REST
+class CreateRoomReq(BaseModel):
+    board: str = "classic12"
+    host_name: str = "房主"
+
+
+@app.get("/api/health")
+async def health():
+    return {
+        "status": "ok",
+        "llm_configured": CONFIG.llm.configured,
+        "model": CONFIG.llm.model if CONFIG.llm.configured else None,
+    }
+
+
+@app.get("/api/boards")
+async def boards():
+    from .game.board import BOARDS
+    return [{"key": b.key, "name": b.name, "seat_count": b.seat_count}
+            for b in BOARDS.values()]
+
+
+@app.post("/api/rooms")
+async def create_room(req: CreateRoomReq):
+    code = MANAGER.create(req.board)
+    return {"code": code}
+
+
+# ---------------------------------------------------------------- WebSocket
+@app.websocket("/ws/{code}")
+async def websocket_endpoint(ws: WebSocket, code: str):
+    await ws.accept()
+    room = MANAGER.get(code)
+    if room is None:
+        await ws.send_json({"type": "error", "message": "房间不存在或已解散"})
+        await ws.close(code=4404)
+        return
+    name = (ws.query_params.get("name") or "玩家").strip()[:12] or "玩家"
+    token = ws.query_params.get("token") or None
+    member, err = await room.attach(ws, name, token)
+    await room.send_snapshot_to(member)
+    if err:
+        await room.send_error(member, err)
+    try:
+        while True:
+            try:
+                data = await ws.receive_json()
+            except ValueError:
+                continue
+            await room.handle_message(member, data)
+    except WebSocketDisconnect:
+        await room.detach(member, ws)
+    except Exception:
+        await room.detach(member, ws)
+
+
+# ---------------------------------------------------------------- 静态前端
+@app.get("/{full_path:path}", include_in_schema=False)
+async def spa(full_path: str):
+    if full_path.startswith("api/") or full_path == "api":
+        raise HTTPException(status_code=404)
+    if full_path and (DIST / full_path).is_file():
+        return FileResponse(DIST / full_path)
+    index = DIST / "index.html"
+    if index.is_file():
+        return FileResponse(index)
+    raise HTTPException(status_code=404, detail="前端未构建：请先在 frontend 目录执行 pnpm build")
+
+
+def main() -> None:
+    uvicorn.run(app, host=CONFIG.server.host, port=CONFIG.server.port)
+
+
+if __name__ == "__main__":
+    main()