feat: check wp_supports_ai() before initializing experiments

includes/bootstrap.php

@@ -125,6 +125,39 @@
 	return true;
 }
 
+/**
+ * Checks whether the current WordPress environment supports AI.
+ *
+ * Displays an admin notice if not.
+ *
+ * @since x.x.x
+ *
+ * @return bool True if AI is supported, false otherwise.
+ */
+function check_ai_support(): bool {
+	// @todo Remove the function check once the minimum WordPress version is 7.0 or higher.
+	if ( ! function_exists( 'wp_supports_ai' ) || wp_supports_ai() ) {
+		return true;
+	}
+
+	foreach ( array( 'admin_notices', 'network_admin_notices' ) as $hook ) {
+		add_action(
+			$hook,
+			static function () {
+				wp_admin_notice(
+					esc_html__( 'Your WordPress environment has AI functionality disabled. The AI Experiments plugin will not work until AI support is enabled.', 'ai' ),
+					array(
+						'type'    => 'error',
+						'dismiss' => false,
+					)
+				);
+			}
+		);
+	}
+
+	return false;
+}
+
 /**
  * Adds action links to the plugin list table.
  *
@@ -306,8 +339,8 @@
 		return;
 	}
 
-	// Check version requirements.
-	if ( ! check_php_version() || ! check_wp_version() ) {
+	// Check plugin requirements.
+	if ( ! check_php_version() || ! check_wp_version() || ! check_ai_support() ) {
 		return;
 	}
 
@@ -331,8 +364,8 @@
 	// Add plugin action links.
 	add_filter( 'plugin_action_links_' . plugin_basename( WPAI_PLUGIN_FILE ), __NAMESPACE__ . '\plugin_action_links' );
 
-	// Hook feature initialization to init.
-	add_action( 'init', __NAMESPACE__ . '\initialize_features', 15 );
+	// Hook experiment initialization to init.
+	add_action( 'init', __NAMESPACE__ . '\initialize_experiments' );
 }
 
 /**