using BackOffice.BFF.Application.Common.Interfaces;
using MediatR;
using Microsoft.Extensions.Logging;
using BffProto = BackOffice.BFF.UserOrder.Protobuf.Protos.UserOrder;
using CmsProto = CMSMicroservice.Protobuf.Protos.UserOrder;

namespace BackOffice.BFF.Application.UserOrderCQ.Commands.UpdateOrderStatus;

public class UpdateOrderStatusCommandHandler : IRequestHandler<UpdateOrderStatusCommand, BffProto.UpdateOrderStatusResponse>
{
    private readonly IApplicationContractContext _context;
    private readonly ILogger<UpdateOrderStatusCommandHandler> _logger;

    public UpdateOrderStatusCommandHandler(
        IApplicationContractContext context,
        ILogger<UpdateOrderStatusCommandHandler> logger)
    {
        _context = context;
        _logger = logger;
    }

    public async Task<BffProto.UpdateOrderStatusResponse> Handle(UpdateOrderStatusCommand request, CancellationToken cancellationToken)
    {
        var grpcRequest = new CmsProto.UpdateOrderStatusRequest
        {
            OrderId = request.OrderId,
            NewStatus = request.NewStatus
        };

        var response = await _context.UserOrders.UpdateOrderStatusAsync(grpcRequest, cancellationToken: cancellationToken);

        _logger.LogInformation(
            "Updated order {OrderId} status from {OldStatus} to {NewStatus}. Success={Success}",
            request.OrderId,
            response.OldStatus,
            response.NewStatus,
            response.Success);

        return new BffProto.UpdateOrderStatusResponse
        {
            Success = response.Success,
            Message = response.Message,
            OldStatus = response.OldStatus,
            NewStatus = response.NewStatus
        };
    }
}