Add a simple check for existence of old version version of attachments plugin framework

pkg_attachments/install.attachments.php

@@ -0,0 +1,102 @@
+<?php
+/**
+ * Attachments component installation script
+ *
+ * @package Attachments
+ * @subpackage Attachments_Component
+ *
+ * @author Jonathan M. Cameron
+ * @copyright Copyright (C) 2007-2024 Jonathan M. Cameron
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GNU/GPL
+ * @link http://joomlacode.org/gf/project/attachments/frs/
+ */
+
+use Joomla\CMS\Factory;
+use Joomla\CMS\Filesystem\Folder;
+use Joomla\CMS\Installer\InstallerAdapter;
+use Joomla\CMS\Installer\InstallerScriptInterface;
+use Joomla\CMS\Language\Text;
+
+// No direct access
+defined('_JEXEC') or die('Restricted access');
+
+/**
+ * The main attachments installation class
+ *
+ * @package Attachments
+ */
+class pkg_AttachmentsInstallerScript implements InstallerScriptInterface
+{
+	/**
+	 * Attachments component install function
+	 *
+	 * @param InstallerAdapter $adapter The adapter calling this method
+	 * @return boolean True on success
+	 */
+	public function install(InstallerAdapter $adapter): bool
+	{
+		return true;
+	}
+
+
+	/**
+	 * Attachments component update function
+	 *
+	 * @param InstallerAdapter $adapter The adapter calling this method
+	 * @return boolean True on success
+	 */
+	public function update(InstallerAdapter $adapter): bool
+	{
+		return true;
+	}
+
+
+	/**
+	 * Attachments component uninstall function
+	 *
+	 * @param InstallerAdapter $adapter The adapter calling this method
+	 * @return boolean True on success
+	 */
+	public function uninstall(InstallerAdapter $adapter): bool
+	{
+		return true;
+	}
+
+
+	/**
+	 * Attachments component preflight function
+	 *
+	 * @param string $type The type of change (install or discover_install, update, uninstall)
+	 * @param InstallerAdapter $adapter The adapter calling this method
+	 * @return boolean True on success
+	 */
+	public function preflight(string $type, InstallerAdapter $adapter): bool
+	{
+		$app = Factory::getApplication();
+
+		// Load the installation language
+		$lang = $app->getLanguage();
+		$lang->load('pkg_attachments.sys', dirname(__FILE__), 'en-GB');
+
+		if (Folder::exists(JPATH_ROOT . '/plugins/attachments/attachments_plugin_framework')) {
+			$msg = Text::_('ATTACH_PACKAGE_REMOVE_OLD_ATTACHMENTS_FRAMEWORK');
+			$app->enqueueMessage($msg, 'error');
+			return false;
+		}
+
+		return true;
+	}
+
+
+	/**
+	 * Attachments component postflight function
+	 *
+	 * @param string $type The type of change (install or discover_install, update, uninstall)
+	 * @param InstallerAdapter $adapter The adapter calling this method
+	 * @return boolean True on success
+	 */
+	public function postflight(string $type, InstallerAdapter $adapter): bool
+	{
+		return true;
+	}
+}

pkg_attachments/language/el-GR/el-GR.pkg_attachments.sys.ini

@@ -9,3 +9,4 @@
 ATTACH_PACKAGE_ATTACHMENTS_FOR_JOOMLA_40PLUS="Συνημμένα για Joomla 4.0+"
 ATTACH_PACKAGE_NOTICE_UNINSTALL_PACKAGE_S="Για να αφαιρέσετε την επέκταση Συνημμένα, αφαιρέστε το Πακέτο '%s'!"
 PKG_ATTACHMENTS="Πακέτο: Συνημμένα για Joomla 4.0+"
+ATTACH_PACKAGE_REMOVE_OLD_ATTACHMENTS_FRAMEWORK="Παρακαλώ αφαιρέστε την παλιά έκδοση του πλαισίου πρόσθετων συνημμένων (framework) πριν την εγκατάσταση της έκδοσης v4.x του πακέτου Συνημμένα (μην αφαιρέσετε την εφαρμογή καθώς αυτό θα έχει σαν αποτέλεσμα να διαγραφούν και όλα σας τα συνημμένα)"

pkg_attachments/language/en-GB/en-GB.pkg_attachments.sys.ini

@@ -8,3 +8,4 @@
 
 ATTACH_PACKAGE_ATTACHMENTS_FOR_JOOMLA_40PLUS="Attachments for Joomla 4.0+"
 PKG_ATTACHMENTS="Package: Attachments for Joomla 4.0+"
+ATTACH_PACKAGE_REMOVE_OLD_ATTACHMENTS_FRAMEWORK="Please remove old version of the attachments plugin framework before installing v4.x of the Attachments Package (don't uninstall the component as this will also remove all of your attachments)"

pkg_attachments/pkg_attachments.xml

@@ -13,6 +13,8 @@
     <packagerurl>http://joomlacode.org/gf/project/attachments/</packagerurl>
     <description>ATTACH_PACKAGE_ATTACHMENTS_FOR_JOOMLA_40PLUS</description>
 
+    <scriptfile>install.attachments.php</scriptfile>
+
     <files folder="packages">
         <file type="component" id="com_attachments">attachments_component.zip</file>
         <file type="plugin" id="attachments" group="content">attachments_plugin.zip</file>