docker/l3d#58 Move project settings out of composer.json

Config.php

@@ -2,6 +2,8 @@
 
 namespace LakeDrops\Component\Composer;
 
+use Composer\Json\JsonFile;
+use Exception;
 use Symfony\Component\Yaml\Yaml;
 use Twig\Error\LoaderError;
 use Twig\Error\RuntimeError;
@@ -65,6 +67,7 @@ final class Config {
 
     $this->init();
     $this->merge($default_values, []);
+    $this->migrateFomrComposerJson();
   }
 
   /**
@@ -83,6 +86,25 @@ final class Config {
     }
   }
 
+  /**
+   * Migrate custom settings from composer.json if required.
+   */
+  private function migrateFomrComposerJson(): void {
+    $filename = getcwd() . '/composer.json';
+    $jsonFile = new JsonFile($filename);
+    $content = $jsonFile->read();
+    if (isset($content['extra'][$this->component])) {
+      $this->merge([], $content['extra'][$this->component]);
+      $this->save();
+      unset($content['extra'][$this->component]);
+      try {
+        $jsonFile->write($content);
+      } catch (Exception $ex) {
+        // Let's ignore this, if composer.json is read-only there is a general problem.
+      }
+    }
+  }
+
   /**
    * @param array $defaultValues
    * @param array $customValues