From 5bd714b6fb156e8abc9a948811e1ce506669a96b Mon Sep 17 00:00:00 2001
From: Hlavtox <daniel.hlavacek@hotmail.cz>
Date: Tue, 3 Dec 2024 12:48:13 +0100
Subject: [PATCH] Migrate category images

---
 .../php/ps_900_migrate_category_images.php    | 107 ++++++++++++++++++
 upgrade/sql/9.0.0.sql                         |   4 +
 2 files changed, 111 insertions(+)
 create mode 100644 upgrade/php/ps_900_migrate_category_images.php

diff --git a/upgrade/php/ps_900_migrate_category_images.php b/upgrade/php/ps_900_migrate_category_images.php
new file mode 100644
index 0000000000..b86a460ea5
--- /dev/null
+++ b/upgrade/php/ps_900_migrate_category_images.php
@@ -0,0 +1,107 @@
+<?php
+/**
+ * Copyright since 2007 PrestaShop SA and Contributors
+ * PrestaShop is an International Registered Trademark & Property of PrestaShop SA
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Open Software License (OSL 3.0)
+ * that is bundled with this package in the file LICENSE.md.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/OSL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@prestashop.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+ * versions in the future. If you wish to customize PrestaShop for your
+ * needs please refer to https://devdocs.prestashop.com/ for more information.
+ *
+ * @author    PrestaShop SA and Contributors <contact@prestashop.com>
+ * @copyright Since 2007 PrestaShop SA and Contributors
+ * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
+ */
+function ps_900_migrate_category_images()
+{
+    /*
+     * Pre v9 worked like this:
+     * There could be 123.jpg, a cover image.
+     * There could be 123_thumb.jpg, a category miniature.
+     * 
+     * If 123_thumb.jpg existed, it took it and generated category thumbnails from it.
+     * But, overwriting thumbnails of 123.jpg.
+     *
+     * So you suddenly got one thumbnail that was from a different image.
+     * Even worse, frontoffice and backoffice generated it as a different thumbnail,
+     * one as small, one as medium.
+     */
+    $formattedNameSmall = ImageType::getFormattedName('small');
+    $formattedNameMedium = ImageType::getFormattedName('medium');
+
+    // Get categories on shop
+    $categoryIds = Db::getInstance()->executeS('SELECT id_category FROM `' . _DB_PREFIX_ . 'category`');
+    if (empty($categoryIds)) {
+        return;
+    }
+
+    foreach ($categoryIds as $row) {
+        // Get the ID
+        $categoryId = (int) $row['id_category'];
+
+        /*
+         * Define paths to original files.
+         * Define paths to possible broken thumbnails.
+         */
+        $categoryCoverPath = _PS_CAT_IMG_DIR_ . $categoryId . '.jpg';
+        $categoryMiniaturePath = _PS_CAT_IMG_DIR_ . $categoryId . '_thumb.jpg';
+        $categorySmallPath =_PS_CAT_IMG_DIR_ . $categoryId . '-' . $formattedNameSmall;
+        $categoryMediumPath = _PS_CAT_IMG_DIR_ . $categoryId . '-' . $formattedNameMedium;
+
+        // Check what images exist
+        $hasCover = file_exists($categoryCoverPath);
+        $hasMiniature = file_exists($categoryMiniaturePath);
+        
+        /*
+         * If both exist, generated thumbnails can be wrong.
+         * We delete them and we are finished.
+         */
+        if ($hasCover && $hasMiniature) {
+            deleteAllThumbnailsIfExist($categorySmallPath);
+            deleteAllThumbnailsIfExist($categoryMediumPath);
+            continue;
+        }
+
+        /*
+         * If it has a cover but no thumbnail, we don't want people
+         * to end up with no thumbnail. We will copy the cover
+         * as the thumbnail. If the destination file already exists,
+         * it will be overwritten.
+         */
+        if ($hasCover && !$hasMiniature) {
+            @copy($categoryCoverPath, $categoryMiniaturePath);
+            continue;
+        }
+
+        /*
+         * If it has a thumbnail but no cover, we will delete thumbnails,
+         * because they have a wrong name and we don't want them to make
+         * issues.
+         */
+        if (!$hasCover && $hasMiniature) {
+            deleteAllThumbnailsIfExist($categorySmallPath);
+            deleteAllThumbnailsIfExist($categoryMediumPath);
+        }
+    }
+}
+
+function deleteAllThumbnailsIfExist($pathWithNoExtension)
+{
+    foreach (['jpg', 'png', 'webp', 'avif'] as $extension) {
+        $path = $pathWithNoExtension . '.' . $extension;
+        if (file_exists($path)) {
+             @unlink($path);
+        }
+    }
+}
diff --git a/upgrade/sql/9.0.0.sql b/upgrade/sql/9.0.0.sql
index d6e4bd9f0e..2e9922f82e 100644
--- a/upgrade/sql/9.0.0.sql
+++ b/upgrade/sql/9.0.0.sql
@@ -197,3 +197,7 @@ ALTER TABLE `PREFIX_shop_url` CHANGE `id_shop` `id_shop` int(11) unsigned NOT NU
 ALTER TABLE `PREFIX_shop_url` ADD UNIQUE KEY `full_shop_url` (`domain`,`physical_uri`,`virtual_uri`);
 ALTER TABLE `PREFIX_shop_url` ADD UNIQUE KEY `full_shop_url_ssl` (`domain_ssl`,`physical_uri`,`virtual_uri`);
 ALTER TABLE `PREFIX_shop_url` ADD KEY `id_shop` (`id_shop`,`main`);
+
+/* Fix category thumbnail images */
+/* https://github.com/PrestaShop/PrestaShop/pull/36877 */
+/* PHP:ps_900_migrate_category_images(); */;