<?php
/**
 * Created by Error202
 * Date: 20.08.2018
 */

namespace core\components\modules;

use core\entities\ModuleRecord;
use core\services\ModuleService;
use Yii;
use yii\helpers\FileHelper;

class ModuleManager
{
	public $moduleNames = [];
	public $modules = [];

	private $service;

	public function __construct(ModuleService $service)
	{
		$this->service = $service;
	}

	public function appendToMigrationTable($name) {
		$time = time();
		$connection = Yii::$app->getDb();
		$command = $connection->createCommand("INSERT INTO migration (version, apply_time) VALUE ('$name', '$time')");
		$command->execute();
	}

	public function removeFromMigrationTable($name) {
		$connection = Yii::$app->getDb();
		$command = $connection->createCommand("DELETE FROM migration WHERE version = '$name'");
		$command->execute();
	}

	public function getModules()
	{
		$modules = [];
		$localModules = $this->getLocalModules();
		foreach ($localModules as $local_module) {
			if ($this->isTableExist('modules') && !$db_module = ModuleRecord::find()->andWhere(['name' => $local_module['name']])->one()) {
				$db_module = $this->service->create($local_module['name'], "common\\modules\\".$local_module['name']."\\" . $local_module['module']);
				$db_module->description = $local_module['description'];
				$modules[] = $db_module;
			}
			else {
				$db_module->description = $local_module['description'];
				$modules[] = $db_module;
			}
		}
		return $modules;
	}

	public function getLocalModules()
	{
		$this->_getLocalModulesNames();

		if (empty($this->modules)) {
			foreach ( $this->moduleNames as $module_name ) {
				$manifest = Yii::getAlias( '@common/modules/' . $module_name . '/manifest.php' );
				if ( file_exists( $manifest ) ) {
					$this->modules[] = require $manifest;
				}
			}
		}
		return $this->modules;
	}

	private function _getLocalModulesNames(): void
	{
		if (!empty($this->moduleNames)) {
			return;
		}

		$names = [];
		$modulePath = Yii::getAlias('@common/modules');
		$modules = file_exists($modulePath) ? FileHelper::findDirectories($modulePath, [
			'recursive' => false,
		]) : [];
		foreach ($modules as $module) {
			$module = basename($module);
			$names[] = $module;
		}
		$this->moduleNames = $names;
	}

	public function isTableExist($name): bool
	{
		return Yii::$app->db->schema->getTableSchema($name) !== null;
	}

}