import logging
from contextlib import asynccontextmanager

from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from fastapi.staticfiles import StaticFiles

from app.config import get_settings
from app.database import init_db
from app.routes import auth_router, room_router, chat_router, game_router

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

settings = get_settings()


@asynccontextmanager
async def lifespan(app: FastAPI):
    """应用生命周期：启动时初始化数据库"""
    await init_db()
    print(f"🚀 Server running at http://{settings.SERVER_HOST}:{settings.SERVER_PORT}")
    yield


app = FastAPI(
    title="The Great War - Game Server",
    version="0.1.0",
    lifespan=lifespan,
)

# CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# API 路由
app.include_router(auth_router)
app.include_router(room_router)
app.include_router(chat_router)
app.include_router(game_router)


# 全局异常处理：捕获未处理的异常并记录日志
@app.exception_handler(Exception)
async def global_exception_handler(request: Request, exc: Exception):
    logger.error(f"Unhandled error on {request.method} {request.url}: {exc}", exc_info=True)
    return JSONResponse(
        status_code=500,
        content={"code": 5000, "message": f"服务器内部错误: {str(exc)}", "data": None},
    )


# 静态文件（前端）
app.mount("/", StaticFiles(directory="static", html=True), name="static")


if __name__ == "__main__":
    import uvicorn

    uvicorn.run(
        "app.main:app",
        host=settings.SERVER_HOST,
        port=settings.SERVER_PORT,
        reload=True,
    )