#!/usr/bin/env python3
import json
import os
from datetime import datetime, timezone
from http.server import BaseHTTPRequestHandler, HTTPServer


def build_payload(headers, client_ip, method, path, now=None):
    if now is None:
        now = datetime.now(timezone.utc)

    forwarded = headers.get("X-Forwarded-For", "")
    ip = forwarded.split(",")[0].strip() if forwarded else client_ip

    return {
        "ip": ip,
        "user_agent": headers.get("User-Agent", ""),
        "method": method,
        "path": path,
        "timestamp": now.isoformat(),
        "headers": dict(headers),
    }


class Handler(BaseHTTPRequestHandler):
    def _write_json(self, status=200):
        headers = {k: v for k, v in self.headers.items()}
        payload = build_payload(
            headers=headers,
            client_ip=self.client_address[0],
            method=self.command,
            path=self.path,
        )

        data = json.dumps(payload, ensure_ascii=False).encode("utf-8")
        self.send_response(status)
        self.send_header("Content-Type", "application/json; charset=utf-8")
        self.send_header("Content-Length", str(len(data)))
        self.end_headers()
        self.wfile.write(data)

    def do_GET(self):
        self._write_json()

    def do_POST(self):
        self._write_json()

    def do_PUT(self):
        self._write_json()

    def do_DELETE(self):
        self._write_json()

    def log_message(self, format, *args):
        # Minimal logs to stdout
        pass


def main():
    port = int(os.environ.get("PORT", "8080"))
    server = HTTPServer(("0.0.0.0", port), Handler)
    server.serve_forever()


if __name__ == "__main__":
    main()