primary sku photo working with janky toggle workaround but w/e lol

src/Model/Behavior/ThirdToggleBehavior.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace CakeProducts\Model\Behavior;
+
+use ArrayObject;
+use Cake\Datasource\EntityInterface;
+use Cake\Event\EventInterface;
+use Cake\ORM\Behavior;
+use LogicException;
+use Tools\Model\Behavior\ToggleBehavior;
+
+/**
+ * ToggleBehavior
+ *
+ * An implementation of a unique field toggle per table or scope.
+ * This will ensure that on a set of records only one can be a "primary" one, setting the others to false then.
+ * On delete it will give the primary status to another record if applicable.
+ *
+ * @author Mark Scherer
+ * @license MIT
+ */
+class ThirdToggleBehavior extends ToggleBehavior {
+
+    /**
+     * Default config
+     *
+     * @var array<string, mixed>
+     */
+    protected array $_defaultConfig = [
+        'field' => 'primary',
+        'on' => 'afterSave', // afterSave (without transactions) or beforeSave (with transactions)
+        'scopeFields' => [],
+        'scope' => [],
+        'findOrder' => null, // null = autodetect modified/created, false to disable
+        'implementedMethods' => [], // to prevent conflict with public toggleField method
+    ];
+
+    /**
+     * @param \Cake\Datasource\EntityInterface $entity
+     *
+     * @return array
+     */
+    protected function buildConditions(EntityInterface $entity) {
+        $conditions = $this->getConfig('scope');
+        $scopeFields = (array)$this->getConfig('scopeFields');
+
+        foreach ($scopeFields as $scopeField) {
+            if ($entity->get($scopeField) === null) {
+                continue;
+           }
+            $conditions[$scopeField] = $entity->get($scopeField);
+        }
+//        dd($conditions);
+
+        return $conditions;
+    }
+}

src/Model/Entity/ProductPhoto.php

@@ -17,6 +17,7 @@ use Cake\ORM\Entity;
  * @property string $photo_filename
  * @property bool $primary_photo
  * @property bool $primary_category_photo
+ * @property bool $primary_sku_photo
  * @property int $photo_position
  * @property bool $enabled
  * @property DateTime $created
@@ -46,6 +47,7 @@ class ProductPhoto extends Entity
         'photo_filename' => true,
         'primary_photo' => true,
         'primary_category_photo' => true,
+        'primary_sku_photo' => true,
         'photo_position' => true,
         'enabled' => true,
         'created' => true,

src/Model/Table/ProductPhotosTable.php

@@ -58,6 +58,7 @@ class ProductPhotosTable extends Table
         );
 
         $this->addBehavior('Timestamp');
+
         $this->addBehavior('Tools.Toggle', [
             'field' => 'primary_photo',
             'scopeFields' => ['product_id'],
@@ -74,6 +75,14 @@ class ProductPhotosTable extends Table
                 'product_category_id IS NOT' => null,
             ],
         ]);
+        $this->addBehavior('CakeProducts.ThirdToggle', [
+            'field' => 'primary_sku_photo',
+            'scopeFields' => ['product_sku_id'],
+            'scope' => [
+                'deleted IS' => null,
+                'product_sku_id IS NOT' => null,
+            ],
+        ]);
         $this->belongsTo('Products', [
             'foreignKey' => 'product_id',
             'joinType' => 'LEFT',