import uvicorn
from fastapi import FastAPI, Request, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from app.api.endpoints import auth, users, meetings
from app.core.config import UPLOAD_DIR, API_CONFIG, MAX_FILE_SIZE
import os

app = FastAPI(
    title="iMeeting API",
    description="智慧会议系统API",
    version="1.0.0"
)

# 添加请求体大小检查中间件
@app.middleware("http")
async def check_content_size(request: Request, call_next):
    # 检查Content-Length头
    content_length = request.headers.get("content-length")
    if content_length:
        content_length = int(content_length)
        if content_length > MAX_FILE_SIZE:
            raise HTTPException(status_code=413, detail=f"Request entity too large. Maximum size is {MAX_FILE_SIZE//1024//1024}MB")
    
    response = await call_next(request)
    return response

# 添加CORS中间件
app.add_middleware(
    CORSMiddleware,
    # allow_origins=API_CONFIG['cors_origins'],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# 静态文件服务 - 提供音频文件下载
if UPLOAD_DIR.exists():
    app.mount("/uploads", StaticFiles(directory=str(UPLOAD_DIR)), name="uploads")

# 包含API路由
app.include_router(auth.router, prefix="/api", tags=["Authentication"])
app.include_router(users.router, prefix="/api", tags=["Users"])
app.include_router(meetings.router, prefix="/api", tags=["Meetings"])

@app.get("/")
def read_root():
    return {"message": "Welcome to iMeeting API"}

@app.get("/health")
def health_check():
    """健康检查端点"""
    return {
        "status": "healthy",
        "service": "iMeeting API",
        "version": "1.0.0"
    }

if __name__ == "__main__":
    # 简单的uvicorn配置，避免参数冲突
    uvicorn.run(
        "main:app",
        host=API_CONFIG['host'], 
        port=API_CONFIG['port'],
        limit_max_requests=1000,
        timeout_keep_alive=30,
        reload=True,
        # 设置更大的请求体限制以支持音频文件上传
        h11_max_incomplete_event_size=104857600,  # 100MB
        
    
    )