using AutoMapper;
using IdentityServer.Application.Commands;
using IdentityServer.Application.Services;
using IdentityServer.PublishedLanguage.Dto;
using MediatR;
using System.Threading;
using System.Threading.Tasks;

namespace IdentityServer.Application.CommandHandlers
{
    public class AuthorizeTokenHandler : IRequestHandler<AuthorizeToken, User>
    {
        private readonly IUserService _userService;
        private readonly IMapper _mapper;

        public AuthorizeTokenHandler(IUserService userService, IMapper mapper)
        {
            _userService = userService;
            _mapper = mapper;
        }

        public async Task<User> Handle(AuthorizeToken command, CancellationToken cancellationToken)
        {
            var appUser = await _userService.Authorize(command.Token);
            if (appUser == null)
                return null;

            var user = _mapper.Map<User>(appUser);
            return user;
        }
    }
}