#!/usr/bin/env php
<?php

/**
 * Contao Open Source CMS
 *
 * Copyright (c) 2005-2016 Leo Feyer
 *
 * @license LGPL-3.0+
 */

// Help
if (in_array('-h', $argv)) {
	echo "  Usage: {$argv[0]} [-h]\n";
	echo "  Remove all translations which are less than 95% complete.\n\n";
	echo "  Options:\n";
	echo "    -h  Show this help text\n";
	exit;
}

// Include the helper functions
define('TL_ROOT', dirname(dirname(__DIR__)));
include TL_ROOT . '/system/helper/functions.php';

// Initialize the counter
$counter = array();

// Loop through the modules
foreach (scan('system/modules') as $module) {
	if (!is_dir("system/modules/$module")) {
		continue;
	}

	// Loop through the languages
	foreach (scan("system/modules/$module/languages") as $language) {

		// Initialize the language
		if (!isset($counter[$language])) {
			$counter[$language] = 0;
		}

		// Parse all files and count the labels
		foreach (scan("system/modules/$module/languages/$language") as $file) {
			if (substr($file, -3) != 'xlf') {
				die("Invalid file: $module/languages/$language/$file");
			}

			// Parse the XML document
			$xml = new DOMDocument();
			$xml->preserveWhiteSpace = false;
			$xml->load("system/modules/$module/languages/$language/$file");
			$units = $xml->getElementsByTagName('trans-unit');

			// Count the translated nodes
			foreach ($units as $unit) {
				if ($language == 'en') {
					++$counter['en'];
				} elseif (($node = $unit->firstChild->nextSibling) && $node->nodeValue != '') {
					++$counter[$language];
				}
			}
		}
	}
}

// Calculate the completion level
foreach ($counter as $language=>$translated) {
	if ($language != 'en') {
		$completion = round($translated / $counter['en'] * 100);

		// Remove languages which are less than 95% complete
		if ($completion < 95) {
			echo "  Removing $language (only $completion% complete)\n";
			shell_exec("rm -r system/modules/*/languages/$language");
		}
	}
}
