[#3360182] Added a new option to the generator to determine where the files will be saved

Closes #3360182

src/Generators/MediaMigrateGeneratorV1.php

@@ -73,13 +73,18 @@ class MediaMigrateGeneratorV1 extends BaseGenerator {
       'target_field' => new Question('Target Media Type Field', 'field_media_image'),
       'lang_code' => new Question('Language Code', 'en'),
       'translation_languages' => new Question('Translation languages (comma separated)', 'none'),
+      'destination' => new Question('Use migration file as a migration "plugin" or as "config"', 'plugin'),
     ];
     unset($questions['class']);
 
     $questions['plugin_id']->setValidator([
-      MediaMigrateGenerator::class,
+      self::class,
       'validatePluginId',
     ]);
+    $questions['destination']->setValidator([
+      self::class,
+      'validateDestination',
+    ]);
 
     $vars = &$this->collectVars($input, $output, $questions);
 
@@ -106,7 +111,7 @@ class MediaMigrateGeneratorV1 extends BaseGenerator {
     $vars['id_key'] = $entityType->getKey('id');
 
     $this->addFile()
-      ->path('config/install/migrate_plus.migration.{plugin_id}_step1.yml')
+      ->path('{destination}/migrate_plus.migration.{plugin_id}_step1.yml')
       ->template('media-migration-step1.yml.twig')
       ->vars($vars);
 
@@ -114,7 +119,7 @@ class MediaMigrateGeneratorV1 extends BaseGenerator {
     // to add translations or not.
     $vars['has_translation'] = (count($vars['translation_languages']) > 0 && $vars['translation_languages'][0] != 'none');
     $this->addFile()
-      ->path('config/install/migrate_plus.migration.{plugin_id}_step2.yml')
+      ->path('{destination}/migrate_plus.migration.{plugin_id}_step2.yml')
       ->template('media-migration-step2.yml.twig')
       ->vars($vars);
 
@@ -126,7 +131,7 @@ class MediaMigrateGeneratorV1 extends BaseGenerator {
       $vars['translation_language'] = $vars['lang_code'] = $language;
 
       $this->addFile()
-        ->path("config/install/migrate_plus.migration.{plugin_id}_step1_{$language}.yml")
+        ->path("{destination}/migrate_plus.migration.{plugin_id}_step1_{$language}.yml")
         ->template('media-migration-step1.yml.twig')
         ->vars($vars);
     }
@@ -161,4 +166,14 @@ class MediaMigrateGeneratorV1 extends BaseGenerator {
     return $value;
   }
 
+  /**
+   * Plugin destination validator.
+   */
+  public static function validateDestination($value): string {
+    if (!in_array($value, ['plugin', 'config'])) {
+      throw new \UnexpectedValueException('Only two options are available: "plugin" and "configs".');
+    }
+    return $value === 'plugin' ? 'migrations' : 'config/install';
+  }
+
 }