using AutoMapper;
using BlackRock.Reporting.API.Core.Interfaces;
using BlackRock.Reporting.API.Mediator.UserMediator.Model;
using MediatR;

namespace BlackRock.Reporting.API.Mediator.UserMediator.Commands
{
    public class DeleteUsersCommand : IRequest<Result<int>>
    {
        public int Id { get; set; }
    }

    public class DeleteUsersCommandHandlers : IRequestHandler<DeleteUsersCommand, Result<int>>
    {
        private readonly ILogger<DeleteUsersCommandHandlers> logger;
        private readonly IMapper mapper;
        private readonly IUnitOfWork unitOfWork;
        public DeleteUsersCommandHandlers(ILogger<DeleteUsersCommandHandlers> logger, IMapper mapper, IUnitOfWork unitOfWork)
        {
            this.unitOfWork = unitOfWork;
            this.mapper = mapper;
            this.logger = logger;
        }
        public async Task<Result<int>> Handle(DeleteUsersCommand command, CancellationToken cancellationToken)
        {
            if (command.Id <= 0)
                throw new ArgumentException($"Parameter {nameof(command.Id)} must not be grater than 0");
            logger.LogInformation("Deleting user ...");
            try
            {
                var user = await unitOfWork.UsersRepository.GetByIdAsync(command.Id);
                unitOfWork.UsersRepository.Remove(user);
                await unitOfWork.SaveChangesAsync();
                logger.LogInformation($"User with id {user.Id} has been deleted successfully");
                return new Result<int> { Data = command.Id };
            }
            catch (Exception ex)
            {
                return new Result<int> { IsSuccess = false, Error = "Faild to delete data from DB." };
            }
        }
    }
}