Add update admin-tools index migrations

Signed-off-by: Riddhesh Sanghvi <riddheshsanghvi96@gmail.com>

Author: mrrobot47

migrations/container/20181119091115_admin-tools-command_update_index.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace EE\Migration;
+
+use EE;
+use EE\Migration\Base;
+use EE\Migration\SiteContainers;
+use EE\RevertableStepProcessor;
+use EE\Model\Site;
+
+class UpdateIndex extends Base {
+
+	private $sites;
+	/** @var RevertableStepProcessor $rsp Keeps track of migration state. Reverts on error */
+	private static $rsp;
+
+	public function __construct() {
+
+		parent::__construct();
+		$this->sites = Site::all();
+		if ( $this->is_first_execution || ! $this->sites ) {
+			$this->skip_this_migration = true;
+		} else {
+			$this->skip_this_migration = true;
+			foreach ( $this->sites as $site ) {
+				if ( $site->admin_tools ) {
+					$this->skip_this_migration = false;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Execute php config updates.
+	 *
+	 * @throws EE\ExitException
+	 */
+	public function up() {
+
+		if ( $this->skip_this_migration ) {
+			EE::debug( 'Skipping update-index migration as it is not needed.' );
+
+			return;
+		}
+		self::$rsp = new RevertableStepProcessor();
+
+
+		EE::debug( 'Starting update-admin-tools-index' );
+
+		$admin_tools_index = EE_ROOT_DIR . '/admin-tools/index.php';
+		$backup_index      = EE_BACKUP_DIR . '/admin-tools/index.php';
+		$new_index_file    = EE_BACKUP_DIR . '/admin-tools/new-index.php';
+
+		$index_path_data = [
+			'db_path'       => DB,
+			'ee_admin_path' => '/var/www/htdocs/ee-admin',
+		];
+		$index_file      = EE\Utils\mustache_render( ADMIN_TEMPLATE_ROOT . '/index.mustache', $index_path_data );
+		$this->fs->dumpFile( $new_index_file, $index_file );
+
+		self::$rsp->add_step(
+			'take-admin-tools-index-backup',
+			'EE\Migration\SiteContainers::backup_restore',
+			'EE\Migration\SiteContainers::backup_restore',
+			[ $admin_tools_index, $backup_index ],
+			[ $backup_index, $admin_tools_index ]
+		);
+
+		self::$rsp->add_step(
+			'update-admin-tools-index',
+			'EE\Migration\SiteContainers::backup_restore',
+			'EE\Migration\SiteContainers::backup_restore',
+			[ $new_index_file, $admin_tools_index ],
+			[ $admin_tools_index, $new_index_file ]
+		);
+
+		if ( ! self::$rsp->execute() ) {
+			throw new \Exception( 'Unable run update-index migrations.' );
+		}
+	}
+
+	/**
+	 * Bring back the existing old config and path.
+	 *
+	 * @throws EE\ExitException
+	 */
+	public function down() {
+	}
+}