from flask import Request
import functions_framework
from utils.custom_logger import get_logger

logger = get_logger(__name__)

@functions_framework.http
def hello_request(request: Request):
    """HTTPリクエストを処理するエンドポイント"""

    logger.info("Cloud Function triggered start")

    # Headerを取得する
    ua = request.headers.get("User-Agent", "Unknown")
    logger.info(f"User-Agent: {ua}")

    if request.method == "GET":
        logger.info("Processing GET request")
        return _get(request)
    elif request.method == "POST":
        logger.info("Processing POST request")
        return _post(request)
    else:
        logger.warning(f"Unsupported HTTP method: {request.method}")
        return {"error": "Unsupported HTTP method"}, 405


def _get(request: Request):
    """GETリクエストの処理"""
    params = request.args
    name = params.get("name", "World")
    message = f"Hello, {name}!"
    logger.info(f"Greeting generated: {message}")
    return {"message": message}


def _post(request: Request):
    """POSTリクエストの処理"""
    data = request.get_json(silent=True)
    if not data or "name" not in data:
        logger.warning("Invalid POST request: 'name' not found in JSON body")
        return {"error": "Please provide a 'name' in the JSON body."}, 400

    name = data["name"]
    message = f"Hello, {name}!"
    logger.info(f"Greeting generated: {message}")
    return {"message": message}