BackOffice.BFF/src/BackOffice.BFF.Application/DiscountOrderCQ/Queries/GetOrderById/GetOrderByIdQueryHandler.cs

using CMSMicroservice.Protobuf.Protos.DiscountOrder;

namespace BackOffice.BFF.Application.DiscountOrderCQ.Queries.GetOrderById;

public class GetOrderByIdQueryHandler : IRequestHandler<GetOrderByIdQuery, GetOrderByIdResponseDto>
{
    private readonly IApplicationContractContext _context;

    public GetOrderByIdQueryHandler(IApplicationContractContext context)
    {
        _context = context;
    }

    public async Task<GetOrderByIdResponseDto> Handle(GetOrderByIdQuery request, CancellationToken cancellationToken)
    {
        var response = await _context.DiscountOrders.GetOrderByIdAsync(
            new GetOrderByIdRequest { OrderId = request.OrderId },
            cancellationToken: cancellationToken);

        return new GetOrderByIdResponseDto
        {
            Id = response.Id,
            UserId = response.UserId,
            TrackingCode = response.TrackingCode,
            Status = response.Status,
            StatusTitle = response.StatusTitle,
            TotalPrice = response.TotalPrice,
            DiscountBalanceUsed = response.DiscountBalanceUsed,
            GatewayPayment = response.GatewayPayment,
            FinalPrice = response.FinalPrice,
            PaymentTransactionCode = response.PaymentTransactionCode,
            AdminNote = response.AdminNote,
            CreatedAt = response.CreatedAt.ToDateTime(),
            PaidAt = response.HasPaidAt ? response.PaidAt.ToDateTime() : null,
            ShippingAddress = new AddressInfoDto
            {
                Id = response.ShippingAddress.Id,
                RecipientName = response.ShippingAddress.RecipientName,
                RecipientPhone = response.ShippingAddress.RecipientPhone,
                Province = response.ShippingAddress.Province,
                City = response.ShippingAddress.City,
                PostalCode = response.ShippingAddress.PostalCode,
                FullAddress = response.ShippingAddress.FullAddress
            },
            Items = response.Items.Select(item => new OrderItemDto
            {
                Id = item.Id,
                ProductId = item.ProductId,
                ProductTitle = item.ProductTitle,
                UnitPrice = item.UnitPrice,
                DiscountPercent = item.DiscountPercent,
                Quantity = item.Quantity,
                TotalPrice = item.TotalPrice,
                DiscountedPrice = item.DiscountedPrice
            }).ToList()
        };
    }
}