add new statifymeta table

inc/class-statify-install.php

@@ -82,8 +82,7 @@ private static function _apply() {
 			);
 		}
 
-		// Create the actual tables.
-		Statify_Table::init();
-		Statify_Table::create();
+		// Initialize the database schema.
+		Statify_Schema::init();
 	}
 }

inc/class-statify-schema.php

@@ -0,0 +1,127 @@
+<?php
+/**
+ * Statify: Statify_Schema class
+ *
+ * This file contains class for the plugin's DB scheme handling.
+ *
+ * @package   Statify
+ * @since     2.0.0
+ */
+
+// Quit if accessed outside WP context.
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Statify DB Schema
+ *
+ * @since 2.0.0
+ */
+class Statify_Schema {
+	/**
+	 * Database tables
+	 *
+	 * @var string[]
+	 */
+	public static $tables = array(
+		'statify',
+		'statifymeta',
+	);
+
+	/**
+	 * Needed statify db version for current plugin version
+	 *
+	 * @var string
+	 */
+	public static $db_version = '2.0.0';
+
+	/**
+	 * Definition of the custom tables.
+	 *
+	 * @since   2.0.0
+	 * @version 2.0.0
+	 */
+	public static function init() {
+		// Global.
+		global $wpdb;
+
+		foreach ( static::$tables as $table ) {
+			$wpdb->tables[] = $table;
+			$wpdb->$table = $wpdb->get_blog_prefix() . $table;
+		}
+
+		self::maybe_create_tables();
+	}
+
+	/**
+	 * Create the tables.
+	 *
+	 * @since   2.0.0
+	 * @version 2.0.0
+	 */
+	public static function maybe_create_tables() {
+		$current_db_version = get_option( 'statify_db_version', '1.8.4' );
+		if ( $current_db_version === self::$db_version ) {
+			return;
+		}
+
+		// Global.
+		global $wpdb, $charset_collate;
+
+		/**
+		 * Use same index length like the WordPress core
+		 *
+		 * @see wp_get_db_schema()
+		 */
+		$max_index_length = 191;
+
+		// Include.
+		require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+
+		// Create statify table.
+		dbDelta(
+			"CREATE TABLE {$wpdb->statify} (
+				id bigint(20) unsigned NOT NULL auto_increment,
+				created date NOT NULL default '0000-00-00',
+				referrer varchar(255) NOT NULL default '',
+				target varchar(255) NOT NULL default '',
+			    hits integer NOT NULL default 1,
+				PRIMARY KEY (id),
+				KEY referrer (referrer),
+				KEY target (target),
+				KEY created (created)
+			) {$charset_collate};"
+		);
+
+		// Create statifymeta table.
+		dbDelta(
+			"CREATE TABLE {$wpdb->statifymeta} (
+				meta_id bigint(20) unsigned NOT NULL auto_increment,
+				statify_id bigint(20) unsigned NOT NULL default 0,
+				meta_key varchar(255) default NULL,
+				meta_value longtext,
+				PRIMARY KEY (meta_id),
+				KEY statify_id (statify_id),
+				KEY meta_key (meta_key({$max_index_length}))
+			) {$charset_collate};"
+		);
+
+		update_option( 'statify_db_version', self::$db_version );
+	}
+
+	/**
+	 * Remove the custom tables.
+	 *
+	 * @since   2.0.0
+	 * @version 2.0.0
+	 */
+	public static function drop_tables() {
+		global $wpdb;
+
+		// Remove.
+		foreach ( static::$tables as $table ) {
+			$wpdb->query( "DROP TABLE IF EXISTS `{$wpdb->$table}`" ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+		}
+
+		delete_option( 'statify_db_version' );
+	}
+}

inc/class-statify-uninstall.php

@@ -70,10 +70,10 @@ private static function _apply() {
 		// Delete options.
 		delete_option( 'statify' );
 
-		// Init table.
-		Statify_Table::init();
+		// Initialize the database schema.
+		Statify_Schema::init();
 
-		// Delete table.
-		Statify_Table::drop();
+		// Delete tables.
+		Statify_Schema::drop_tables();
 	}
 }

inc/class-statify.php

@@ -44,8 +44,8 @@ public static function init() {
 			return;
 		}
 
-		// Table init.
-		Statify_Table::init();
+		// Initialize the database schema.
+		Statify_Schema::init();
 
 		// Plugin options.
 		self::$_options = wp_parse_args(

statify.php

@@ -73,7 +73,7 @@ function statify_autoload( $class ) {
 		'Statify_Uninstall',
 		'Statify_Deactivate',
 		'Statify_Settings',
-		'Statify_Table',
+		'Statify_Schema',
 		'Statify_XMLRPC',
 		'Statify_Cron',
 	);