<?php

namespace Combodo\iTop\Setup\FeatureRemoval;

use Combodo\iTop\Setup\ModuleDependency\Module;
use Config;
use InstallationChoicesToModuleConverter;
use iTopExtensionsMap;
use MetaModel;
use ModuleDiscovery;
use RunTimeEnvironment;
use SetupUtils;
use utils;

class DryRemovalRuntimeEnvironment extends RunTimeEnvironment
{
	public const DRY_REMOVAL_AUDIT_ENV = "extension-removal";

	protected array $aExtensionsByCode;

	/**
	 * Toolset for building a run-time environment
	 *
	 * @param string $sEnvironment (e.g. 'test')
	 * @param bool $bAutoCommit (make the target environment directly, or build a temporary one)
	 */
	public function __construct($sEnvironment = self::DRY_REMOVAL_AUDIT_ENV, $bAutoCommit = true)
	{
		parent::__construct($sEnvironment, $bAutoCommit);
		$this->aExtensionsByCode = [];
	}

	/**
	 * @param string $sSourceEnv
	 * @param array $aExtensionCodesToRemove
	 *
	 * @return void
	 * @throws \Exception
	 */
	public function Prepare(string $sSourceEnv, array $aExtensionCodesToRemove)
	{

		$sEnv = $this->sFinalEnv;
		$this->aExtensionsByCode = $aExtensionCodesToRemove;

		$this->Cleanup();
		SetupUtils::copydir(APPROOT."/data/$sSourceEnv-modules", APPROOT."/data/$sEnv-modules");

		$this->DeclareExtensionAsRemoved($aExtensionCodesToRemove);

		$oDryRemovalConfig = clone(MetaModel::GetConfig());
		$oDryRemovalConfig->ChangeModulesPath($sSourceEnv, $this->sFinalEnv);
		$this->WriteConfigFileSafe($oDryRemovalConfig);

		$sSourceDir = $oDryRemovalConfig->Get('source_dir');
		$aSearchDirs = $this->GetExtraDirsToCompile($sSourceDir);

		$aModulesToLoad = $this->GetModulesToLoad($sSourceEnv, $aSearchDirs);

		try {
			ModuleDiscovery::GetModulesOrderedByDependencies($aSearchDirs, true, $aModulesToLoad);
		} catch (\MissingDependencyException $e) {
			\IssueLog::Error("Cannot prepare setup due to dependency issue", null, ['msg' => $e->getMessage(), 'modules_to_load' => $aModulesToLoad]);
			throw $e;
		}
	}

	private function DeclareExtensionAsRemoved(array $aExtensionCodes): void
	{
		$oExtensionsMap = new iTopExtensionsMap($this->sFinalEnv);
		$oExtensionsMap->DeclareExtensionAsRemoved($aExtensionCodes);
	}

	private function GetModulesToLoad(string $sSourceEnv, $aSearchDirs): array
	{
		$oSourceConfig = new Config(utils::GetConfigFilePath($sSourceEnv));
		$aChoices = iTopExtensionsMap::GetChoicesFromDatabase($oSourceConfig);
		$sSourceDir = $oSourceConfig->Get('source_dir');

		$sInstallFilePath = APPROOT.$sSourceDir.'/installation.xml';
		if (! is_file($sInstallFilePath)) {
			$sInstallFilePath = null;
		}

		$aModuleIdsToLoad = InstallationChoicesToModuleConverter::GetInstance()->GetModules($aChoices, $aSearchDirs, $sInstallFilePath);
		$aModulesToLoad = [];
		foreach ($aModuleIdsToLoad as $sModuleId) {
			$oModule = new Module($sModuleId);
			$sModuleName = $oModule->GetModuleName();
			$aModulesToLoad[] = $sModuleName;
		}
		return $aModulesToLoad;
	}

	public function Cleanup()
	{
		$sEnv = $this->sFinalEnv;
		SetupUtils::rrmdir(APPROOT."/data/$sEnv-modules");
		SetupUtils::rrmdir(APPROOT."/data/cache-$sEnv");
		SetupUtils::rrmdir(APPROOT."/env-$sEnv");
		SetupUtils::rrmdir(APPROOT."/conf/$sEnv");
		@unlink(APPROOT."/data/datamodel-$sEnv.xml");
	}
}