Database optimizations (#84)

* Add Database class and CLI option to run optimizations

* Add multi-site support

Makefile

@@ -1,4 +1,4 @@
-VERSION := 3.29.4
+VERSION := 3.30.0
 PLUGINSLUG := woocart-defaults
 SRCPATH := $(shell pwd)/src
 

src/classes/CLICommand.php

@@ -10,6 +10,7 @@
 
 namespace Niteo\WooCart\Defaults {
 
+	use Niteo\WooCart\Defaults\Database;
 	use Niteo\WooCart\Defaults\Generators\Product;
 	use Niteo\WooCart\Defaults\Importers\SellingLimit;
 	use Niteo\WooCart\Defaults\Importers\WooPage;
@@ -444,5 +445,85 @@ public function filesystem_lock( $args, $assoc_args ) {
 				WP_CLI::error( $e );
 			}
 		}
+
+		/**
+		 * Checks and applies the optimizations for the database.
+		 *
+		 * ## OPTIONS
+		 *
+		 * <action>
+		 * : Action to be performed.
+		 *
+		 * [--network]
+		 * : Multi-site support.
+		 *
+		 * ---
+		 * options:
+		 *   - optimize
+		 *
+		 * ## EXAMPLES
+		 *
+		 *     wp wcd db optimize
+		 *
+		 * @codeCoverageIgnore
+		 * @param $args array list of command line arguments.
+		 * @param $assoc_args array of named command line keys.
+		 * @throws WP_CLI\ExitException on wrong command.
+		 */
+		public function db( $args, $assoc_args ) {
+			try {
+				list($action) = $args;
+
+				if ( 'optimize' === $action ) {
+					$db = new Database();
+
+					/**
+					 * Optimizations.
+					 *
+					 * 1. Run analyze query on 3 tables (posts, postmeta, and options)
+					 * 2. Switch table engine to InnoDB
+					 * 3. Add index on columns
+					 */
+					if ( isset( $assoc_args['network'] ) ) {
+						if ( is_multisite() ) {
+							$sites = get_sites(
+								array(
+									'fields' => 'ids',
+								)
+							);
+
+							foreach ( $sites as $site ) {
+								switch_to_blog( $site );
+
+								// Fetch details for the current site.
+								$site_info = get_blog_details( $site );
+
+								WP_CLI::log( '' );
+								WP_CLI::log( '--> Running optimisations for ' . $site_info->blogname . ' (ID: ' . $site . ')' );
+								WP_CLI::log( '' );
+
+								$db->analyze_tables();      // 1
+								$db->switch_to_innodb();    // 2
+								$db->add_indexes();             // 3
+
+								restore_current_blog();
+							}
+
+							return;
+						} else {
+							WP_CLI::error( 'Multi-site is not enabled. Please try again without the --network option.' );
+							return;
+						}
+					}
+
+					$db->analyze_tables();          // 1
+					$db->switch_to_innodb();        // 2
+					$db->add_indexes();                 // 3
+				}
+			} catch ( \Exception $e ) {
+				WP_CLI::line( 'There was an error processing your request.' );
+				WP_CLI::error( $e->getMessage() );
+			}
+		}
 	}
 }