docs: add comment

Endpoint/Controllers/V1/AuthController.cs

@@ -29,12 +29,21 @@ public class AuthController(IOptionsSnapshot<Admin> user, AuthService auth, Pass
             Path = UrlHelper.GetSubPathWithoutFirstApiName + "api"
         };
 
+    /// <summary>
+    /// Gets the list of available OAuth providers with their respective redirect URIs.
+    /// </summary>
+    /// <returns>A list of available providers.</returns>
     [HttpGet("GetAvailableProviders")]
     public ActionResult<List<AvailableProvidersResponse>> GetUrls() =>
         Ok(oAuthService
             .GetAvailableProviders(HttpContext, GetCookieParams(), HttpContext.GetApiUrl(Url.Action("OAuth2")!))
             .ConvertToDto());
 
+    /// <summary>
+    /// Logs in a user using their username or email and password.
+    /// </summary>
+    /// <param name="request">The login request containing username/email and password.</param>
+    /// <returns>A TwoFactorAuthentication token if the login is successful; otherwise, a BadRequest response.</returns>
     [HttpPost("Login")]
     [BadRequestResponse]
     public async Task<ActionResult<TwoFactorAuthentication>> Login([FromBody] LoginRequest request)
@@ -63,6 +72,11 @@ public class AuthController(IOptionsSnapshot<Admin> user, AuthService auth, Pass
         return Ok(tokenResult.ConvertToDto());
     }
 
+    /// <summary>
+    /// Performs two-factor authentication for the user.
+    /// </summary>
+    /// <param name="request">The request containing the method and code for two-factor authentication.</param>
+    /// <returns>A boolean indicating whether the two-factor authentication was successful.</returns>
     [HttpPost("2FA")]
     [BadRequestResponse]
     public async Task<ActionResult<bool>> TwoFactorAuth([FromBody] TwoFactorAuthRequest request)