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

namespace BlackRock.Reporting.API.Mediator.UserMediator.Commands
{
    public class CreateUserCommand : UserCommand, IRequest<Result<int>>
    {
    }

    public class CreateUserCommandHandlers : IRequestHandler<CreateUserCommand, Result<int>>
    {
        private readonly ILogger<CreateUserCommandHandlers> logger;
        private readonly IMapper mapper;
        private readonly IUnitOfWork unitOfWork;
        public CreateUserCommandHandlers(ILogger<CreateUserCommandHandlers> logger, IMapper mapper, IUnitOfWork unitOfWork)
        {
            this.unitOfWork = unitOfWork;
            this.mapper = mapper;
            this.logger = logger;

        }
        public async Task<Result<int>> Handle(CreateUserCommand command, CancellationToken cancellationToken)
        {
            if (command is null)
                throw new ArgumentException($"Parameter {nameof(command)} must not be null");

            try
            {
                logger.LogInformation("Creating new user ...");
                var user = mapper.Map<UserCommand, User>(command);
                await unitOfWork.UsersRepository.AddAsync(user);
                await unitOfWork.SaveChangesAsync();
                logger.LogInformation($"User with id {user.Id} has been created successfully");
                return new Result<int> { Data = user.Id };
            }
            catch (Exception ex)
            {
                logger.LogError(ex, "Faild to add data to DB.");
                return new Result<int> { IsSuccess = false, Error = "Faild to add data to DB." };
            }
        }
    }
}