chatbot/Chatbot.Api.Application/Services/UserService.cs

using Chatbot.Api.Domain.Entities;
using Chatbot.Api.Domain.Services;
using System.Threading.Tasks;

namespace Chatbot.Api.Application.Services
{
    public interface IUserService
    {
        Task<User> Authenticate(string username, string password);
    }

    public class UserService : IUserService
    {
        private readonly IParamProvider _paramProvider;

        public UserService(IParamProvider paramProvider)
        {
            _paramProvider = paramProvider;
        }

        public async Task<User> Authenticate(string username, string password)
        {
            return await Task.Run(() => CheckCredentials(username, password));
        }

        private User CheckCredentials(string username, string password)
        {
            if (_paramProvider.Credentials.UserName == username && _paramProvider.Credentials.Password == password)
                return new User() { UserName = username, Id = 1 };
            else
                return null;
        }
    }
}