Add database versioning to Analytics Service Provider

includes/Analytics/AnalyticsServiceProvider.php

@@ -16,6 +16,13 @@
  * The AnalyticsServiceProvider class.
  */
 class AnalyticsServiceProvider extends AbstractServiceProvider implements BootableServiceProviderInterface {
+	/**
+	 * The database version.
+	 *
+	 * @var int
+	 */
+	const DB_VERSION = 1;
+
 	const EVENTS_TABLE  = 'omniform_stats_events';
 	const VISITOR_TABLE = 'omniform_stats_visitors';
 
@@ -58,6 +65,8 @@ function () {
 	 */
 	public function boot(): void {
 		add_action( 'omniform_activate', array( $this, 'activate' ) );
+		add_action( 'admin_init', array( $this, 'update_database' ) );
+
 		add_action( 'delete_post', array( $this, 'on_delete_form' ), 10, 2 );
 	}
 
@@ -110,6 +119,21 @@ public function activate() {
 		}
 	}
 
+	/**
+	 * Update the database if needed.
+	 */
+	public function update_database() {
+		$installed_version = get_option( 'omniform_analytics_db_version' );
+
+		// Check if an update is needed.
+		if ( false === $installed_version || version_compare( (int) $installed_version, self::DB_VERSION, '<' ) ) {
+			$this->activate();
+
+			// Update the installed version number.
+			update_option( 'omniform_analytics_db_version', self::DB_VERSION );
+		}
+	}
+
 	/**
 	 * Fires immediately before a post is deleted from the database.
 	 *