Selector/Selector.Model/ApplicationUser.cs

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;

namespace Selector.Model
{
    public class ApplicationUser : IdentityUser
    {
        [Required]
        public bool SpotifyIsLinked { get; set; }
        public DateTime SpotifyLastRefresh { get; set; }
        public int SpotifyTokenExpiry { get; set; }
        public string SpotifyAccessToken { get; set; }
        public string SpotifyRefreshToken { get; set; }

        public string LastFmUsername { get; set; }

        public List<Watcher> Watchers { get; set; }
    }

    public class ApplicationUserDTO
    {
        public string UserName { get; set; }
        public string Email { get; set; }
        public string PhoneNumber { get; set; }

        public bool SpotifyIsLinked { get; set; }
        public DateTime SpotifyLastRefresh { get; set; }
        public int SpotifyTokenExpiry { get; set; }
        public string SpotifyAccessToken { get; set; }
        public string SpotifyRefreshToken { get; set; }

        public string LastFmUsername { get; set; }

        public static explicit operator ApplicationUserDTO(ApplicationUser user) => new() {
            UserName = user.UserName,
            Email = user.Email,
            PhoneNumber = user.PhoneNumber,

            SpotifyIsLinked = user.SpotifyIsLinked,
            SpotifyLastRefresh = user.SpotifyLastRefresh,
            SpotifyTokenExpiry = user.SpotifyTokenExpiry,
            SpotifyAccessToken = user.SpotifyAccessToken,
            SpotifyRefreshToken = user.SpotifyRefreshToken,

            LastFmUsername = user.LastFmUsername
        };
    }
}