1 files changed, 104 insertions, 0 deletions
diff --git a/www/wiki/extensions/Gadgets/includes/GadgetRepo.php b/www/wiki/extensions/Gadgets/includes/GadgetRepo.php
new file mode 100644
index 00000000..11996f8e
--- /dev/null
+++ b/www/wiki/extensions/Gadgets/includes/GadgetRepo.php
@@ -0,0 +1,104 @@
+<?php
+
+use MediaWiki\Linker\LinkTarget;
+
+abstract class GadgetRepo {
+
+	/**
+	 * @var GadgetRepo|null
+	 */
+	private static $instance;
+
+	/**
+	 * Get the ids of the gadgets provided by this repository
+	 *
+	 * It's possible this could be out of sync with what
+	 * getGadget() will return due to caching
+	 *
+	 * @return string[]
+	 */
+	abstract public function getGadgetIds();
+
+	/**
+	 * Get the Gadget object for a given gadget id
+	 *
+	 * @param string $id
+	 * @throws InvalidArgumentException
+	 * @return Gadget
+	 */
+	abstract public function getGadget( $id );
+
+	/**
+	 * Given that the provided page was updated, invalidate
+	 * caches if necessary
+	 *
+	 * @param LinkTarget $target
+	 *
+	 * @return void
+	 */
+	public function handlePageUpdate( LinkTarget $target ) {
+	}
+
+	/**
+	 * Given that the provided page was created, invalidate
+	 * caches if necessary
+	 *
+	 * @param LinkTarget $target
+	 *
+	 * @return void
+	 */
+	public function handlePageCreation( LinkTarget $target ) {
+	}
+
+	/**
+	 * Given that the provided page was updated, invalidate
+	 * caches if necessary
+	 *
+	 * @param LinkTarget $target
+	 *
+	 * @return void
+	 */
+	public function handlePageDeletion( LinkTarget $target ) {
+	}
+
+	/**
+	 * Get a list of gadgets sorted by category
+	 *
+	 * @return array [ 'category' => [ 'name' => $gadget ] ]
+	 */
+	public function getStructuredList() {
+		$list = [];
+		foreach ( $this->getGadgetIds() as $id ) {
+			try {
+				$gadget = $this->getGadget( $id );
+			} catch ( InvalidArgumentException $e ) {
+				continue;
+			}
+			$list[$gadget->getCategory()][$gadget->getName()] = $gadget;
+		}
+
+		return $list;
+	}
+
+	/**
+	 * Get the configured default GadgetRepo.
+	 *
+	 * @return GadgetRepo
+	 */
+	public static function singleton() {
+		if ( self::$instance === null ) {
+			global $wgGadgetsRepoClass; // @todo use Config here
+			self::$instance = new $wgGadgetsRepoClass();
+		}
+		return self::$instance;
+	}
+
+	/**
+	 * Should only be used by unit tests
+	 *
+	 * @param GadgetRepo|null $repo
+	 */
+	public static function setSingleton( $repo = null ) {
+		self::$instance = $repo;
+	}
+}