started refactoring the User class to the Notification Preference class

src/User/NotificationPreference.php

@@ -12,6 +12,7 @@
 namespace Flarum\User;
 
 use Flarum\Database\AbstractModel;
+use InvalidArgumentException;
 
 /**
  * @property int $user_id
@@ -21,8 +22,27 @@ use Flarum\Database\AbstractModel;
  */
 class NotificationPreference extends AbstractModel
 {
+    static protected $channels = [];
+
     public function user()
     {
         return $this->belongsTo(User::class);
     }
+
+    public static function addChannel(string $channel)
+    {
+        static::$channels[] = $channel;
+    }
+
+    public static function setNotificationPreference(User $user, string $type, string $channel, bool $toggle = true)
+    {
+        if (in_array($channel, static::$channels)) {
+            $user->notificationPreferences()
+                ->where('channel', $channel)
+                ->where('type', $type)
+                ->update(['enabled' => $toggle]);
+        } else {
+            throw new InvalidArgumentException("Channel is not registered.");
+        }
+    }
 }

src/User/User.php

@@ -459,6 +459,7 @@ class User extends AbstractModel
      *
      * @param string $value
      * @return array
+     * @deprecated 0.1.0-beta.11: `users.preferences` is no longer used.
      */
     public function getPreferencesAttribute($value)
     {
@@ -475,6 +476,7 @@ class User extends AbstractModel
      * Encode an array of preferences for storage in the database.
      *
      * @param mixed $value
+     * @deprecated 0.1.0-beta.11: `users.preferences` is no longer used.
      */
     public function setPreferencesAttribute($value)
     {
@@ -511,6 +513,7 @@ class User extends AbstractModel
      * @param string $key
      * @param mixed $default
      * @return mixed
+     * @deprecated 0.1.0-beta.11: `users.preferences` is no longer used.
      */
     public function getPreference($key, $default = null)
     {
@@ -523,6 +526,7 @@ class User extends AbstractModel
      * @param string $key
      * @param mixed $value
      * @return $this
+     * @deprecated 0.1.0-beta.11: `users.preferences` is no longer used.
      */
     public function setPreference($key, $value)
     {
@@ -736,6 +740,7 @@ class User extends AbstractModel
      * @param string $key
      * @param callable $transformer
      * @param mixed $default
+     * @deprecated 0.1.0-beta.11: `users.preferences` is no longer used, use NotificationPreference::addPreference.
      */
     public static function addPreference($key, callable $transformer = null, $default = null)
     {
@@ -749,6 +754,7 @@ class User extends AbstractModel
      * @param string $type
      * @param string $method
      * @return string
+     * @deprecated 0.1.0-beta.11: `users.preferences` is no longer used, use NotificationPreference::getPreferenceKey.
      */
     public static function getNotificationPreferenceKey($type, $method)
     {