network-resurrector/NetworkResurrector.Application/Queries/GetToken.cs

using AutoMapper;
using MediatR;
using NDB.Application.DataContracts;
using NetworkResurrector.Application.Services;
using System;
using System.Threading;
using System.Threading.Tasks;

namespace NetworkResurrector.Application.Queries
{
    public class GetToken
    {
        public class Query : Query<Model>
        {
            public string UserName { get; set; }
            public string Password { get; set; }
            public Query() { }
        }

        public class Model
        {
            public string Token { get; set; }
            public DateTime ValidUntil { get; set; }
        }

        public class QueryHandler : IRequestHandler<Query, Model>
        {
            private readonly IUserService _userService;
            private readonly IMapper _mapper;

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

            public async Task<Model> Handle(Query request, CancellationToken cancellationToken)
            {
                var securityToken = await _userService.Login(request.UserName, request.Password);
                if (securityToken == null)
                    return null;

                var result = _mapper.Map<Model>(securityToken);
                return result;
            }
        }
    }
}