using CMSMicroservice.Protobuf.Protos.Commission;

namespace BackOffice.BFF.Application.CommissionCQ.Queries.GetWithdrawalReports;

public class GetWithdrawalReportsQueryHandler : IRequestHandler<GetWithdrawalReportsQuery, GetWithdrawalReportsResponseDto>
{
    private readonly IApplicationContractContext _context;

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

    public async Task<GetWithdrawalReportsResponseDto> Handle(GetWithdrawalReportsQuery request, CancellationToken cancellationToken)
    {
        var grpcRequest = new GetWithdrawalReportsRequest
        {
            PeriodType = (int)request.PeriodType
        };

        // تنظیم بازه زمانی
        if (request.StartDate.HasValue)
        {
            grpcRequest.StartDate = Timestamp.FromDateTime(request.StartDate.Value.ToUniversalTime());
        }

        if (request.EndDate.HasValue)
        {
            grpcRequest.EndDate = Timestamp.FromDateTime(request.EndDate.Value.ToUniversalTime());
        }

        // فیلتر وضعیت
        if (request.Status.HasValue)
        {
            grpcRequest.Status = request.Status.Value;
        }

        // فیلتر کاربر
        if (request.UserId.HasValue)
        {
            grpcRequest.UserId = request.UserId.Value;
        }

        var response = await _context.Commissions.GetWithdrawalReportsAsync(grpcRequest, cancellationToken: cancellationToken);

        // تبدیل به DTO
        return new GetWithdrawalReportsResponseDto
        {
            PeriodReports = response.PeriodReports.Select(p => new PeriodReportDto
            {
                PeriodLabel = p.PeriodLabel,
                StartDate = p.StartDate.ToDateTime(),
                EndDate = p.EndDate.ToDateTime(),
                TotalRequests = p.TotalRequests,
                PendingCount = p.PendingCount,
                ApprovedCount = p.ApprovedCount,
                RejectedCount = p.RejectedCount,
                CompletedCount = p.CompletedCount,
                FailedCount = p.FailedCount,
                TotalAmount = p.TotalAmount,
                PaidAmount = p.PaidAmount,
                PendingAmount = p.PendingAmount
            }).ToList(),
            Summary = new WithdrawalSummaryDto
            {
                TotalRequests = response.Summary.TotalRequests,
                TotalAmount = response.Summary.TotalAmount,
                TotalPaid = response.Summary.TotalPaid,
                TotalPending = response.Summary.TotalPending,
                TotalRejected = response.Summary.TotalRejected,
                AverageAmount = response.Summary.AverageAmount,
                UniqueUsers = response.Summary.UniqueUsers,
                SuccessRate = (decimal)response.Summary.SuccessRate
            }
        };
    }
}