# Copyright (C) 2024 by Animath
# SPDX-License-Identifier: GPL-3.0-or-later

from datetime import datetime, timedelta

from django.conf import settings
import requests


_access_token = None
_refresh_token = None
_expires_at = None


def get_hello_asso_access_token():
    global _access_token, _refresh_token, _expires_at

    now = datetime.now()
    if _access_token is None:
        response = requests.post(
            "https://api.helloasso.com/oauth2/token",
            data={
                "grant_type": "client_credentials",
                "client_id": settings.HELLOASSO_CLIENT_ID,
                "client_secret": settings.HELLOASSO_CLIENT_SECRET,
            },
        )
        response.raise_for_status()
        data = response.json()
        _access_token = data["access_token"]
        _refresh_token = data["refresh_token"]
        _expires_at = now + timedelta(seconds=data["expires_in"])
    elif now >= _expires_at:
        response = requests.post(
            "https://api.helloasso.com/oauth2/token",
            data={
                "grant_type": "refresh_token",
                "refresh_token": _refresh_token,
            },
        )
        response.raise_for_status()
        data = response.json()
        _access_token = data["access_token"]
        _refresh_token = data["refresh_token"]
        _expires_at = now + timedelta(seconds=data["expires_in"])

    return _access_token


def get_checkout_intent(checkout_id):
    token = get_hello_asso_access_token()
    response = requests.get(
        f"https://api.helloasso.com/v5/organizations/animath/checkout-intents/{checkout_id}",
        headers={"Authorization": f"Bearer {token}"},
    )
    if response.status_code == 404:
        return None
    response.raise_for_status()

    checkout_intent = response.json()
    if requests.head(checkout_intent["redirectUrl"]).status_code == 404:
        return None

    return checkout_intent


def create_checkout_intent(amount, name, back_url, error_url, return_url, contains_donation=False, metadata=None):
    token = get_hello_asso_access_token()
    metadata = metadata or {}
    response = requests.post(
        "https://api.helloasso.com/v5/organizations/animath/checkout-intents/",
        headers={"Authorization": f"Bearer {token}"},
        json={
            "totalAmount": amount,
            "initialAmount": amount,
            "itemName": name,
            "backUrl": back_url,
            "errorUrl": error_url,
            "returnUrl": return_url,
            "containsDonation": contains_donation,
            "metadata": metadata,
        },
    )
    print(response.text)
    response.raise_for_status()
    return response.json()