Played around with a new app structure

app/Activity/Models/View.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace BookStack\Activity\Models;
+
+use BookStack\App\Model;
+use BookStack\Permissions\Models\JointPermission;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+
+/**
+ * Class View
+ * Views are stored per-item per-person within the database.
+ * They can be used to find popular items or recently viewed items
+ * at a per-person level. They do not record every view instance as an
+ * activity. Only the latest and original view times could be recognised.
+ *
+ * @property int $views
+ * @property int $user_id
+ */
+class View extends Model
+{
+    protected $fillable = ['user_id', 'views'];
+
+    /**
+     * Get all owning viewable models.
+     */
+    public function viewable(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    public function jointPermissions(): HasMany
+    {
+        return $this->hasMany(JointPermission::class, 'entity_id', 'viewable_id')
+            ->whereColumn('views.viewable_type', '=', 'joint_permissions.entity_type');
+    }
+
+    /**
+     * Increment the current user's view count for the given viewable model.
+     */
+    public static function incrementFor(Viewable $viewable): int
+    {
+        $user = user();
+        if (is_null($user) || $user->isDefault()) {
+            return 0;
+        }
+
+        /** @var View $view */
+        $view = $viewable->views()->firstOrNew([
+            'user_id' => $user->id,
+        ], ['views' => 0]);
+
+        $view->forceFill(['views' => $view->views + 1])->save();
+
+        return $view->views;
+    }
+
+    /**
+     * Clear all views from the system.
+     */
+    public static function clearAll()
+    {
+        static::query()->truncate();
+    }
+}