Fix #3030: Add upload the sqlite database feature

app/Controller/ConfigController.php

@@ -200,6 +200,32 @@ class ConfigController extends BaseController
         $this->response->redirect($this->helper->url->to('ConfigController', 'index'));
     }
 
+    /**
+     * Display the Sqlite database upload page
+     *
+     * @access public
+     */
+    public function uploadDb()
+    {
+        $this->response->html($this->helper->layout->config('config/upload_db', array()));
+    }
+
+    /**
+     * Replace current Sqlite db with uploaded file
+     *
+     * @access public
+     */
+    public function uploadDbSave()
+    {
+        $filename = $this->request->getFilePath('file');
+        if (!file_exists($filename) || !$this->configModel->uploadDatabase($filename)) {
+            $this->flash->failure(t('Unable to read your file'));
+        } else {
+            $this->flash->success(t('Database upload done.'));
+        }
+        $this->response->redirect($this->helper->url->to('ConfigController', 'index'));
+    }
+
     /**
      * Regenerate webhook token
      *

app/Model/ConfigModel.php

@@ -48,6 +48,20 @@ class ConfigModel extends SettingModel
         return gzencode(file_get_contents(DB_FILENAME));
     }
 
+    /**
+     * Replace database file with uploaded one
+     *
+     * @access public
+     * @return boolean
+     */
+    public function uploadDatabase($file)
+    {
+
+        $this->db->closeConnection();
+        $result = file_put_contents(DB_FILENAME, gzdecode(file_get_contents($file)));
+        return $result == false? false: true;
+    }
+
     /**
      * Get the Sqlite database size in bytes
      *

app/Template/config/about.php

@@ -68,6 +68,9 @@
                 <?= $this->url->link(t('Download the database'), 'ConfigController', 'downloadDb', array(), true) ?>&nbsp;
                 <?= t('(Gzip compressed Sqlite file)') ?>
             </li>
+            <li>
+                <?= $this->url->link(t('Upload the database'), 'ConfigController', 'uploadDb', array(), false, 'js-modal-medium') ?>
+            </li>
             <li>
                 <?= $this->url->link(t('Optimize the database'), 'ConfigController', 'optimizeDb', array(), true) ?>&nbsp;
                 <?= t('(VACUUM command)') ?>

app/Template/config/upload_db.php

@@ -0,0 +1,18 @@
+<div class="page-header">
+    <h2><?= t('Upload the Sqlite database') ?></h2>
+</div>
+
+<div class="alert">
+    <ul>
+        <li><?= t('You can upload Gzip compressed Sqlite database you previously downloaded') ?></li>
+    </ul>
+</div>
+
+<form action="<?= $this->url->href('ConfigController', 'uploadDbSave') ?>" method="post" enctype="multipart/form-data">
+    <?= $this->form->csrf() ?>
+
+    <?= $this->form->label(t('Database file'), 'file') ?>
+    <?= $this->form->file('file') ?>
+
+    <?= $this->modal->submitButtons(array('submitLabel' => t('Upload'))) ?>
+</form>