from fastapi import FastAPI, Query, Request, Response
import httpx
import uvicorn

app = FastAPI()

@app.api_route("/", methods=["GET", "POST", "PUT", "DELETE"])
@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE"])
async def proxy(request: Request, url: str = Query(...)):
    async with httpx.AsyncClient() as client:
        method = request.method
        headers = dict(request.headers)
        headers.pop("host", None) 
        
        content = await request.body()
        
        try:
            target_response = await client.request(
                method,
                url,
                headers=headers,
                content=content,
                follow_redirects=True
            )
        except Exception as e:
            return Response(content=str(e), status_code=500)

    excluded_headers = [
        "content-encoding", 
        "content-length", 
        "transfer-encoding", 
        "connection"
    ]
    
    response_headers = {
        k: v for k, v in target_response.headers.items() 
        if k.lower() not in excluded_headers
    }

    return Response(
        content=target_response.content,
        status_code=target_response.status_code,
        headers=response_headers,
        media_type=target_response.headers.get("content-type")
    )

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=7860)