import logging
from typing import Literal

from fastapi import APIRouter, HTTPException
from ..payments import PaypalClient, OrderRequest
from ..supabase.supabase import SupabaseClient
from ..cache import CreditCache, make_credit_cache_key


# Create a PayPal & Supabase client
paypal_client = PaypalClient(sandbox_mode=False)
supabase = SupabaseClient()

# Initialize the API router
router = APIRouter()

# Initialize the logger
logger = logging.getLogger(__name__)


# TODO: add the return url in the API payload to redirect the user to the app.
@router.post("/orders/new")
def create_order(
        user_id: str,
        basket: list,
        currency: Literal['CHF', 'EUR', 'USD'],
        return_url_success: str = 'https://anydev.info',
        return_url_failure: str = 'https://anydev.info'
    ):
    """
    Creates a new PayPal order.

    Args:
        user_id (str): The ID of the user placing the order.
        basket (list): The basket items.
        currency (str): The currency code.

    Returns:
        dict: The PayPal order details.
    """

    # Create order :
    order = OrderRequest(
        user_id = user_id,
        basket=basket,
        currency=currency
    )

    # Process the order and return the details
    return paypal_client.order(order_request=order, return_url_success=return_url_success, return_url_failure=return_url_failure)



@router.post("/orders/{order_id}/{user_id}capture")
def capture_order(order_id: str, user_id: str):
    """
    Captures payment for an existing PayPal order.

    Args:
        order_id (str): The PayPal order ID.

    Returns:
        dict: The PayPal capture response.
    """
    # Capture the payment
    result = paypal_client.capture(order_id)

    # Grant the user the correct amount of credits:
    credits = CreditCache.get_credits(user_id, order_id)
    if credits:
        supabase.increment_credit_balance(
            user_id=user_id,
            amount=credits
        )
        logger.info('Payment capture succeeded: incrementing balance of user {user_id} by {credits}.')
    else:
        logger.error('Capture payment failed. Could not find cache key for user {user_id} and order {order_id}')

    return result




# import logging
# import paypalrestsdk
# from fastapi import HTTPException, APIRouter

# from ..supabase.supabase import SupabaseClient
# from .payment_handler import PaymentRequest, PaymentHandler

# # Set up logging and supabase
# logger = logging.getLogger(__name__)
# supabase = SupabaseClient()

# # Configure PayPal SDK
# paypalrestsdk.configure({
#     "mode": "sandbox",  # Use 'live' for production
#     "client_id": "YOUR_PAYPAL_CLIENT_ID",
#     "client_secret": "YOUR_PAYPAL_SECRET"
# })


# # Define the API router
# router = APIRouter()

# @router.post("/purchase/credits")
# def purchase_credits(payment_request: PaymentRequest):
#     """
#     Handles token purchases. Calculates the number of tokens based on the amount paid,
#     updates the user's balance, and processes PayPal payment.
#     """
#     payment_handler = PaymentHandler(payment_request)

#     # Create PayPal payment and get the approval URL
#     approval_url = payment_handler.create_paypal_payment()

#     return {
#         "message": "Purchase initiated successfully",
#         "payment_id": payment_handler.payment_id,
#         "credits": payment_request.credit_amount,
#         "approval_url": approval_url,
#     }


# @router.get("/payment/success")
# def payment_success(paymentId: str, PayerID: str):
#     """
#     Handles successful PayPal payment.
#     """
#     payment = paypalrestsdk.Payment.find(paymentId)

#     if payment.execute({"payer_id": PayerID}):
#         logger.info("Payment executed successfully")

#         # Retrieve transaction details from the database
#         result = supabase.table("pending_payments").select("*").eq("payment_id", paymentId).single().execute()
#         if not result.data:
#             raise HTTPException(status_code=404, detail="Transaction not found")

#         # Extract the necessary information
#         user_id = result.data["user_id"]
#         credit_amount = result.data["credit_amount"]

#         # Update the user's balance
#         supabase.increment_credit_balance(user_id, amount=credit_amount)

#         # Optionally, delete the pending payment entry since the transaction is completed
#         supabase.table("pending_payments").delete().eq("payment_id", paymentId).execute()

#         return {"message": "Payment completed successfully"}
#     else:
#         logger.error(f"Payment execution failed: {payment.error}")
#         raise HTTPException(status_code=500, detail="Payment execution failed")


# @router.get("/payment/cancel")
# def payment_cancel():
#     """
#     Handles PayPal payment cancellation.
#     """
#     return {"message": "Payment was cancelled"}