Move Task::duplicate() to class ProjectTaskDuplicationModel

app/Model/ProjectTaskDuplicationModel.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Kanboard\Model;
+
+use Kanboard\Core\Base;
+
+/**
+ * Project Task Duplication Model
+ *
+ * @package  Kanboard\Model
+ * @author   Frederic Guillot
+ */
+class ProjectTaskDuplicationModel extends Base
+{
+    /**
+     * Duplicate all tasks to another project
+     *
+     * @access public
+     * @param  integer $src_project_id
+     * @param  integer $dst_project_id
+     * @return boolean
+     */
+    public function duplicate($src_project_id, $dst_project_id)
+    {
+        $task_ids = $this->taskFinderModel->getAllIds($src_project_id, array(TaskModel::STATUS_OPEN, TaskModel::STATUS_CLOSED));
+
+        foreach ($task_ids as $task_id) {
+            if (! $this->taskProjectDuplicationModel->duplicateToProject($task_id, $dst_project_id)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+}