Initial release

inc/class-plugin.php

+<?php
+/**
+ * Plugin functionality.
+ *
+ * @package ETH_Embed_Anchor_FM
+ */
+
+namespace ETH_Embed_Anchor_FM;
+
+/**
+ * Class Plugin.
+ */
+class Plugin {
+	/**
+	 * Singleton.
+	 *
+	 * @var Plugin
+	 */
+	private static $_instance = null;
+
+	/**
+	 * Implement singleton.
+	 *
+	 * @return Plugin
+	 */
+	public static function get_instance(): Plugin {
+		if ( ! is_a( self::$_instance, __CLASS__ ) ) {
+			self::$_instance = new self();
+			self::$_instance->setup();
+		}
+
+		return self::$_instance;
+	}
+
+	/**
+	 * Silence is golden!
+	 */
+	private function __construct() {}
+
+	/**
+	 * Register hooks.
+	 *
+	 * @return void
+	 */
+	private function setup(): void {
+		// TODO: add oEmbed handler.
+		// TODO: add shortcode.
+	}
+}