using CMSMicroservice.Protobuf.Protos.DiscountOrder;
using Google.Protobuf.WellKnownTypes;

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

public class GetAllDiscountOrdersQueryHandler : IRequestHandler<GetAllDiscountOrdersQuery, GetAllDiscountOrdersResponseDto>
{
    private readonly IApplicationContractContext _context;

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

    public async Task<GetAllDiscountOrdersResponseDto> Handle(GetAllDiscountOrdersQuery request, CancellationToken cancellationToken)
    {
        var grpcRequest = new GetAllDiscountOrdersRequest
        {
            PageNumber = request.PageNumber,
            PageSize = request.PageSize
        };

        if (request.UserId.HasValue)
            grpcRequest.UserId = request.UserId.Value;

        if (request.PaymentStatus.HasValue)
            grpcRequest.PaymentStatus = request.PaymentStatus.Value;

        if (request.DeliveryStatus.HasValue)
            grpcRequest.DeliveryStatus = request.DeliveryStatus.Value;

        if (!string.IsNullOrWhiteSpace(request.UserMobile))
            grpcRequest.UserMobile = request.UserMobile;

        if (!string.IsNullOrWhiteSpace(request.TrackingCode))
            grpcRequest.TrackingCode = request.TrackingCode;

        if (request.FromDate.HasValue)
            grpcRequest.FromDate = Timestamp.FromDateTime(DateTime.SpecifyKind(request.FromDate.Value, DateTimeKind.Utc));

        if (request.ToDate.HasValue)
            grpcRequest.ToDate = Timestamp.FromDateTime(DateTime.SpecifyKind(request.ToDate.Value, DateTimeKind.Utc));

        if (request.MinAmount.HasValue)
            grpcRequest.MinAmount = request.MinAmount.Value;

        if (request.MaxAmount.HasValue)
            grpcRequest.MaxAmount = request.MaxAmount.Value;

        var response = await _context.DiscountOrders.GetAllDiscountOrdersAsync(grpcRequest, cancellationToken: cancellationToken);

        return new GetAllDiscountOrdersResponseDto
        {
            MetaData = new MetaData
            {
                CurrentPage = response.MetaData.CurrentPage,
                TotalPage = response.MetaData.TotalPage,
                PageSize = response.MetaData.PageSize,
                TotalCount = response.MetaData.TotalCount,
                HasPrevious = response.MetaData.HasPrevious,
                HasNext = response.MetaData.HasNext
            },
            Orders = response.Models.Select(o => new AdminOrderDto
            {
                Id = o.Id,
                UserId = o.UserId,
                UserFullName = o.UserFullName,
                UserMobile = o.UserMobile,
                TotalAmount = o.TotalAmount,
                DiscountBalanceUsed = o.DiscountBalanceUsed,
                GatewayAmountPaid = o.GatewayAmountPaid,
                VatAmount = o.VatAmount,
                PaymentStatus = (int)o.PaymentStatus,
                PaymentDate = o.PaymentDate?.ToDateTime(),
                DeliveryStatus = (int)o.DeliveryStatus,
                DeliveryDate = o.DeliveryDate?.ToDateTime(),
                ShippingAddress = o.ShippingAddress,
                ReceiverName = o.ReceiverName,
                ReceiverMobile = o.ReceiverMobile,
                TrackingCode = o.TrackingCode,
                AdminNote = o.AdminNote,
                Created = o.Created.ToDateTime(),
                LastModified = o.LastModified?.ToDateTime(),
                ItemsCount = o.ItemsCount
            }).ToList()
        };
    }
}