using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using GoodBooks.PAY.PAYBLL.Checkout;
using static GB5Shared.GB5Constant.Constant;

namespace GoodBooks.PAY.PAYSL.Endpoints.Checkout
{
    public class InitiatePayOrder : BaseEndpoint<InitiatePayOrder.InitiatePayOrderParameters, ResponseStandardDTO<object>>
    {
        private readonly IPayOrderBLL _bll;

        public InitiatePayOrder(IPayOrderBLL bll) => _bll = bll;

        public override void Configure()
        {
            Post("/Pay/Order/InitiatePayOrder");
            AllowAnonymous();
            // TODO: wire Claims("PAY_ACCESS") when entitlement middleware is ready
        }

        public record InitiatePayOrderParameters(
            [property: FromHeader] string Login,
            [property: FromBody]   InitiatePayOrderRequest Body
        );

        /// <summary>
        /// Mutation endpoint — no cache key.
        /// Payment order creation is transactional; results must never be served from cache.
        /// </summary>
        protected override string? GetCacheKey(InitiatePayOrderParameters req, LoginDTO login) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            InitiatePayOrderParameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.InitiatePayOrder(req.Body, login, ct);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                    result, CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}