<?php

/**
 * @file tools/removeLocaleKey.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2003-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class RemoveLocaleKey
 * @ingroup tools
 *
 * @brief Remove a locale key from all locale files.
 */

require(dirname(dirname(dirname(dirname(__FILE__)))) . '/tools/bootstrap.inc.php');

class RemoveLocaleKey extends CommandLineTool {

	/** @var string Locale key to be removed */
	public $localeKey = '';

	/** @var string Which files to remove the locale key from */
	public $dirs = ['locale', 'lib/pkp/locale'];

	/**
	 * Constructor
	 */
	function __construct($argv = array()) {
		parent::__construct($argv);

		if (!sizeof($this->argv)) {
			$this->usage();
			exit(1);
		}

		array_shift($argv);

		$this->localeKey = array_shift($argv);

		if (sizeof($this->argv) > 2) {
			$this->dirs = $argv;
		}
	}

	/**
	 * Print command usage information.
	 */
	function usage() {
		echo "\nRemove a locale key from all locale files.\n\n"
			. "  Usage: php {$this->scriptName} [localeKey] ([path] [path])\n\n"
			. "  Remove locale keys from app:\n  php {$this->scriptName} locale.key locale\n\n"
			. "  Remove locale keys from pkp-lib:\n  php {$this->scriptName} locale.key lib/pkp/locale\n\n"
			. "  If no path is specified it will remove the locale\n  key from files in both directories.\n\n";
	}

	/**
	 * Remove the requested locale key
	 */
	function execute() {

		$localeKeyLine = 'msgid "' . $this->localeKey . '"';
		$rootDir = dirname(dirname(dirname(dirname(__FILE__))));

		foreach ($this->dirs as $dir) {
			$locales = scandir($rootDir . '/' . $dir);
			foreach ($locales as $locale) {
				if ($locale === '.' || $locale === '..') {
					continue;
				}
				$localeDir = join('/', [$rootDir, $dir, $locale]);
				$files = scandir($localeDir);
				foreach ($files as $file) {
					if ($file === '.' || $file === '..' || substr($file, -2) !== 'po') {
						continue;
					}
					$content = file_get_contents($localeDir . '/' . $file);
					$lines = explode("\n", $content);
					$newLines = [];
					$removing = false;
					foreach($lines as $line) {
						if ($localeKeyLine === substr($line, 0, strlen($localeKeyLine))) {
							$removing = true;
						} elseif ($removing && 'msgid' === substr($line, 0, strlen('msgid'))) {
							$removing = false;
						}
						if (!$removing) {
							$newLines[] = $line;
						}
					}
					if (count($lines) !== count($newLines)) {
						file_put_contents($localeDir . '/' . $file, join("\n", $newLines));
						echo (count($lines) - count($newLines)) . " lines removed from $localeDir/$file.\n";
					}
				}
			}
		}
	}
}

$tool = new RemoveLocaleKey(isset($argv) ? $argv : array());
$tool->execute();