Добавьте файлы проекта.

PlaylistShared.Api/Services/JwtService.cs

@@ -0,0 +1,49 @@
+using Microsoft.AspNetCore.Identity;
+using Microsoft.IdentityModel.Tokens;
+using PlaylistShared.Api.Entities;
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Text;
+
+namespace PlaylistShared.Api.Services;
+
+public class JwtService
+{
+    private readonly IConfiguration _configuration;
+    private readonly UserManager<ApplicationUser> _userManager;
+
+    public JwtService(IConfiguration configuration, UserManager<ApplicationUser> userManager)
+    {
+        _configuration = configuration;
+        _userManager = userManager;
+    }
+
+    public async Task<(string Token, string RefreshToken, DateTime Expiration)> GenerateTokenAsync(ApplicationUser user)
+    {
+        var tokenHandler = new JwtSecurityTokenHandler();
+
+        var key = Encoding.UTF8.GetBytes(_configuration["Jwt:Key"]!);
+        var tokenDescriptor = new SecurityTokenDescriptor
+        {
+            Subject = new ClaimsIdentity(new[]
+            {
+                new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
+                new Claim(ClaimTypes.Name, user.UserName!),
+                new Claim(ClaimTypes.Email, user.Email!),
+            }),
+            Expires = DateTime.UtcNow.AddHours(1),
+            Issuer = _configuration["Jwt:Issuer"],
+            Audience = _configuration["Jwt:Audience"],
+            SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
+        };
+        var token = tokenHandler.CreateToken(tokenDescriptor);
+        var tokenString = tokenHandler.WriteToken(token);
+
+        var refreshToken = Guid.NewGuid().ToString();
+        user.RefreshToken = refreshToken;
+        user.RefreshTokenExpiryUtc = DateTime.UtcNow.AddDays(7);
+        await _userManager.UpdateAsync(user);
+
+        return (tokenString, refreshToken, tokenDescriptor.Expires.Value);
+    }
+}