using BackOffice.BFF.Package.Protobuf.Protos.Package;
using MediatR;
using Microsoft.Extensions.Logging;

namespace BackOffice.BFF.Application.PackageCQ.Queries.GetUserPackageStatus;

public class GetUserPackageStatusQueryHandler : IRequestHandler<GetUserPackageStatusQuery, GetUserPackageStatusResponse>
{
    private readonly PackageContract.PackageContractClient _packageClient;
    private readonly ILogger<GetUserPackageStatusQueryHandler> _logger;

    public GetUserPackageStatusQueryHandler(
        PackageContract.PackageContractClient packageClient,
        ILogger<GetUserPackageStatusQueryHandler> logger)
    {
        _packageClient = packageClient;
        _logger = logger;
    }

    public async Task<GetUserPackageStatusResponse> Handle(GetUserPackageStatusQuery request, CancellationToken cancellationToken)
    {
        // TODO: پیاده‌سازی GetUserPackageStatus
        // 
        // 1. ایجاد gRPC Request:
        //    - var grpcRequest = new CMSMicroservice.Protobuf.Protos.Package.GetUserPackageStatusRequest {
        //        UserId = request.UserId
        //      }
        //
        // 2. فراخوانی CMS:
        //    - var response = await _packageClient.GetUserPackageStatusAsync(grpcRequest, cancellationToken: cancellationToken)
        //
        // 3. تبدیل به BFF Response:
        //    - return new GetUserPackageStatusResponse {
        //        UserId = response.UserId,
        //        PackagePurchaseMethod = response.PackagePurchaseMethod,
        //        HasPurchasedPackage = response.HasPurchasedPackage,
        //        IsClubMemberActive = response.IsClubMemberActive,
        //        WalletBalance = response.WalletBalance,
        //        DiscountBalance = response.DiscountBalance,
        //        CanActivateClubMembership = response.CanActivateClubMembership,
        //        LastOrderNumber = response.LastOrderNumber,
        //        LastPurchaseDate = response.LastPurchaseDate
        //      }
        //
        // 4. Log:
        //    - _logger.LogInformation("Retrieved package status for user {UserId}", request.UserId)
        //
        // نکته: این endpoint برای Admin است تا وضعیت کاربران را بررسی کند

        throw new NotImplementedException("GetUserPackageStatus needs implementation");
    }
}