using Grand.Business.Core.Queries.Checkout.Orders;
using Grand.Data;
using Grand.Domain.Payments;
using MediatR;

namespace Grand.Business.Checkout.Queries.Handlers.Orders;

public class
    GetPaymentTransactionQueryHandler : IRequestHandler<GetPaymentTransactionQuery, IQueryable<PaymentTransaction>>
{
    private readonly IRepository<PaymentTransaction> _paymentTransactionRepository;

    public GetPaymentTransactionQueryHandler(IRepository<PaymentTransaction> paymentTransactionRepository)
    {
        _paymentTransactionRepository = paymentTransactionRepository;
    }

    public Task<IQueryable<PaymentTransaction>> Handle(GetPaymentTransactionQuery request,
        CancellationToken cancellationToken)
    {
        var query = from p in _paymentTransactionRepository.Table
            select p;

        if (!string.IsNullOrEmpty(request.StoreId))
            query = query.Where(rr => request.StoreId == rr.StoreId);

        if (!string.IsNullOrEmpty(request.CustomerEmail))
            query = query.Where(rr => rr.CustomerEmail == request.CustomerEmail.ToLowerInvariant());

        if (request.OrderGuid.HasValue)
            query = query.Where(rr => rr.OrderGuid == request.OrderGuid.Value);

        if (request.Ts.HasValue)
            query = query.Where(rr => rr.TransactionStatus == request.Ts.Value);

        if (request.CreatedFromUtc.HasValue)
            query = query.Where(rr => request.CreatedFromUtc.Value <= rr.CreatedOnUtc);

        if (request.CreatedToUtc.HasValue)
            query = query.Where(rr => request.CreatedToUtc.Value >= rr.CreatedOnUtc);

        query = query.OrderByDescending(rr => rr.CreatedOnUtc);

        return Task.FromResult(query);
    }
}