[ticket/12664] Refactor develop/migration_tips.php into a console command.

PHPBB3-12664

phpBB/phpbb/console/command/dev/migration_tips.php

@@ -0,0 +1,63 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+namespace phpbb\console\command\dev;
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class migration_tips extends \phpbb\console\command\command
+{
+	/** @var \phpbb\extension\manager */
+	protected $extension_manager;
+
+	function __construct(\phpbb\extension\manager $extension_manager)
+	{
+		$this->extension_manager = $extension_manager;
+		parent::__construct();
+	}
+
+	protected function configure()
+	{
+		$this
+			->setName('dev:migration-tips')
+			->setDescription('Finds migrations that are not depended on.')
+		;
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output)
+	{
+		$migrations = $this->extension_manager->get_finder()
+			->core_path('phpbb/db/migration/data/')
+			->get_classes();
+		$tips = $migrations;
+
+		foreach ($migrations as $migration_class)
+		{
+			foreach ($migration_class::depends_on() as $dependency)
+			{
+				$tips_key = array_search($dependency, $tips);
+				if ($tips_key !== false)
+				{
+					unset($tips[$tips_key]);
+				}
+			}
+		}
+
+		$output->writeln("\t\tarray(");
+		foreach ($tips as $migration)
+		{
+			$output->writeln("\t\t\t'{$migration}',");
+		}
+		$output->writeln("\t\t);");
+	}
+}