feat: Add script to regenerate product combinations

- Implemented a PHP script to delete old product combinations and recreate them based on existing attributes.
- The script retrieves product details, existing combinations, and associated attributes from the database.
- It deletes old combinations and their associations before inserting new combinations and linking them to shops.
- The script ensures that the default combination is set correctly and clears the cache after updates.

fix_combinations.php

@@ -0,0 +1,133 @@
+<?php
+/*
+require(dirname(__FILE__).'/config/config.inc.php');
+require(dirname(__FILE__).'/init.php');
+
+$id_product = 35778;
+$tablePrefix = 'materac_';
+$db = Db::getInstance();
+$product = new Product($id_product);
+
+if (!Validate::isLoadedObject($product)) {
+    die("Nie znaleziono produktu ID $id_product\n");
+}
+
+// Pobierz wszystkie sklepy
+$shops = $db->executeS("SELECT id_shop FROM {$tablePrefix}shop");
+
+// Pobierz stare kombinacje wraz z ich parametrami
+$oldCombinations = $db->executeS("
+    SELECT pa.id_product_attribute, pa.price, pa.weight, pa.quantity, pa.wholesale_price,
+           pa.ecotax, pa.unit_price_impact, pa.default_on, pa.minimal_quantity, pa.available_date
+    FROM {$tablePrefix}product_attribute pa
+    WHERE pa.id_product = $id_product
+");
+
+if (!$oldCombinations) {
+    die("Brak kombinacji do zregenerowania.\n");
+}
+
+// Usuń istniejące kombinacje i powiązania
+// Przygotuj zestawy atrybutów do odtworzenia — zanim cokolwiek usuniesz!
+$attributeSets = $db->executeS("
+    SELECT pac.id_product_attribute, GROUP_CONCAT(pac.id_attribute ORDER BY pac.id_attribute) as attributes
+    FROM {$tablePrefix}product_attribute_combination pac
+    WHERE pac.id_product_attribute IN (
+        SELECT id_product_attribute FROM {$tablePrefix}product_attribute WHERE id_product = $id_product
+    )
+    GROUP BY pac.id_product_attribute
+");
+
+if (!$attributeSets) {
+    die("Brak danych atrybutów do odtworzenia kombinacji. Nic nie zostało usunięte.");
+}
+
+// Usuń istniejące kombinacje i powiązania — dopiero teraz!
+foreach ($oldCombinations as $comb) {
+    $id_pa = (int)$comb['id_product_attribute'];
+
+    $db->delete("product_attribute_combination", "id_product_attribute = $id_pa");
+    $db->delete("product_attribute_shop", "id_product_attribute = $id_pa");
+    $db->delete("product_attribute", "id_product_attribute = $id_pa");
+}
+echo "Usunięto stare kombinacje.\n";
+
+
+// Mapa: stary id_pa → zestaw atrybutów
+$attributeMap = [];
+foreach ($attributeSets as $set) {
+    $attributeMap[$set['id_product_attribute']] = explode(',', $set['attributes']);
+}
+
+$newCombinationIds = [];
+$firstDefault = true;
+
+foreach ($oldCombinations as $oldComb) {
+    $old_pa = (int)$oldComb['id_product_attribute'];
+    $attrs = isset($attributeMap[$old_pa]) ? $attributeMap[$old_pa] : [];
+
+    if (empty($attrs)) {
+        echo "⚠️  Pominięto kombinację $old_pa — brak atrybutów.\n";
+        continue;
+    }
+
+    // Dodaj nową kombinację
+    $new_pa = $db->insert(
+        "product_attribute",
+        [
+            'id_product' => $id_product,
+            'price' => $oldComb['price'],
+            'wholesale_price' => $oldComb['wholesale_price'],
+            'weight' => $oldComb['weight'],
+            'quantity' => $oldComb['quantity'],
+            'ecotax' => $oldComb['ecotax'],
+            'unit_price_impact' => $oldComb['unit_price_impact'],
+            'default_on' => $firstDefault ? 1 : 0,
+            'minimal_quantity' => $oldComb['minimal_quantity'],
+            'available_date' => $oldComb['available_date'],
+        ],
+        true
+    );
+
+    if (!$new_pa) {
+        echo "❌ Błąd dodawania nowej kombinacji.\n";
+        continue;
+    }
+
+    // Przypisz do sklepów
+    foreach ($shops as $shop) {
+        $db->insert("product_attribute_shop", [
+            'id_product_attribute' => $new_pa,
+            'id_product' => $id_product,
+            'id_shop' => (int)$shop['id_shop'],
+            'price' => $oldComb['price'],
+            'wholesale_price' => $oldComb['wholesale_price'],
+            'weight' => $oldComb['weight'],
+            'ecotax' => $oldComb['ecotax'],
+            'default_on' => $firstDefault ? 1 : 0,
+            'minimal_quantity' => $oldComb['minimal_quantity'],
+            'available_date' => $oldComb['available_date'],
+        ]);
+    }
+
+    // Wstaw atrybuty
+    foreach ($attrs as $attr_id) {
+        $db->insert("product_attribute_combination", [
+            'id_product_attribute' => $new_pa,
+            'id_attribute' => (int)$attr_id,
+        ]);
+    }
+
+    echo "✅ Dodano nową kombinację ID $new_pa z atrybutami: " . implode(',', $attrs) . "\n";
+
+    $newCombinationIds[] = $new_pa;
+    $firstDefault = false;
+}
+
+// Odśwież domyślną kombinację i cache
+$product->checkDefaultAttributes();
+$product->cache_default_attribute = (int)Product::getDefaultAttribute($product->id);
+$product->save();
+
+Tools::clearCache();
+echo "🎉 Gotowe! Kombinacje zrekonstruowane i produkt zapisany.\n";