from django.conf import settings
import requests


SUMUP_CLIENT_ID = settings.SUMUP_CLIENT_ID
SUMUP_CLIENT_SECRET = settings.SUMUP_CLIENT_SECRET
SUMUP_EMAIL = settings.SUMUP_MERCHANT_EMAIL

def obtener_token():
    """Obtiene un access token de SumUp"""
    url = "https://api.sumup.com/token"
    data = {
        "grant_type": "client_credentials",
        "client_id": SUMUP_CLIENT_ID,
        "client_secret": SUMUP_CLIENT_SECRET
    }
    headers = {"Content-Type": "application/x-www-form-urlencoded"}
    
    response = requests.post(url, headers=headers, data=data)
    if response.status_code == 200:
        return response.json().get("access_token")
    else:
        raise Exception(f"Error al obtener token: {response.json()}")

def crear_checkout(monto, moneda="EUR"):
    """Crea un pago en SumUp y devuelve el checkout_id"""
    access_token = obtener_token()
    url = "https://api.sumup.com/v0.1/checkouts"
    headers = {
        "Authorization": f"Bearer {access_token}",
        "Content-Type": "application/json"
    }
    data = {
        "checkout_reference": "pedido-12345",
        "amount": monto,
        "currency": moneda,
        "pay_to_email": SUMUP_EMAIL,
        "description": "Pago de prueba"
    }
    
    response = requests.post(url, headers=headers, json=data)
    if response.status_code == 201:
        return response.json().get("id")  # checkout_id
    else:
        raise Exception(f"Error al crear checkout: {response.json()}")
