from fastapi import FastAPI, Request, Response, WebSocket, WebSocketDisconnect
import httpx
import uvicorn
import asyncio
import websockets
import logging

app = FastAPI()

TARGET_BASE = "http://127.0.0.1:9222"  # Chrome DevTools HTTP 地址
TARGET_WS_BASE = "ws://127.0.0.1"  # Chrome DevTools WebSocket 地址

# 配置日志
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS", "HEAD"])
async def proxy(request: Request, path: str):
    url = f"{TARGET_BASE}/{path}"
    headers = dict(request.headers)
    headers["host"] = "127.0.0.1"  # 强制修改 Host 头
    body = await request.body()
    async with httpx.AsyncClient(follow_redirects=True) as client:
        resp = await client.request(
            request.method,
            url,
            headers=headers,
            content=body,
            params=request.query_params
        )
    return Response(
        content=resp.content,
        status_code=resp.status_code,
        headers=dict(resp.headers)
    )

@app.websocket("/{path:path}")
async def websocket_proxy(websocket: WebSocket, path: str):
    await websocket.accept()
    target_url = f"{TARGET_WS_BASE}/{path}"
    logger.info(f"Forwarding WebSocket to: {target_url}")

    try:
        async with websockets.connect(
            target_url,
            extra_headers={"Host": "127.0.0.1"},
            ping_timeout=30,
            close_timeout=10
        ) as target_ws:
            async def client_to_server():
                while True:
                    data = await websocket.receive_bytes()  # 支持二进制
                    await target_ws.send(data)

            async def server_to_client():
                while True:
                    data = await target_ws.recv()
                    if isinstance(data, bytes):
                        await websocket.send_bytes(data)
                    else:
                        await websocket.send_text(data)

            await asyncio.gather(client_to_server(), server_to_client())
    except WebSocketDisconnect:
        logger.info("Client disconnected")
    except Exception as e:
        logger.error(f"WebSocket error: {e}")
        await websocket.close()

if __name__ == "__main__":
    uvicorn.run("hg:app", host="0.0.0.0", port=8000, reload=True)