<?php
/**
 * Statistics about the localisation.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup MaintenanceLanguage
 *
 * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
 * @author Antoine Musso <hashar at free dot fr>
 *
 * Output is posted from time to time on:
 * https://www.mediawiki.org/wiki/Localisation_statistics
 */
$optionsWithArgs = [ 'output' ];
$optionsWithoutArgs = [ 'help' ];

require_once __DIR__ . '/../commandLine.inc';
require_once 'languages.inc';
require_once __DIR__ . '/StatOutputs.php';

if ( isset( $options['help'] ) ) {
	showUsage();
}

# Default output is WikiText
if ( !isset( $options['output'] ) ) {
	$options['output'] = 'wiki';
}

/** Print a usage message */
function showUsage() {
	print <<<TEXT
Usage: php transstat.php [--help] [--output=csv|text|wiki]
	--help : this helpful message
	--output : select an output engine one of:
		* 'csv'      : Comma Separated Values.
		* 'wiki'     : MediaWiki syntax (default).
		* 'text'     : Text with tabs.
Example: php maintenance/transstat.php --output=text

TEXT;
	exit( 1 );
}

# Select an output engine
switch ( $options['output'] ) {
	case 'wiki':
		$output = new WikiStatsOutput();
		break;
	case 'text':
		$output = new TextStatsOutput();
		break;
	case 'csv':
		$output = new CsvStatsOutput();
		break;
	default:
		showUsage();
}

# Languages
$languages = new Languages();

# Header
$output->heading();
$output->blockstart();
$output->element( 'Language', true );
$output->element( 'Code', true );
$output->element( 'Fallback', true );
$output->element( 'Translated', true );
$output->element( '%', true );
$output->element( 'Obsolete', true );
$output->element( '%', true );
$output->element( 'Problematic', true );
$output->element( '%', true );
$output->blockend();

$wgGeneralMessages = $languages->getGeneralMessages();
$wgRequiredMessagesNumber = count( $wgGeneralMessages['required'] );

foreach ( $languages->getLanguages() as $code ) {
	# Don't check English, RTL English or dummy language codes
	if ( $code == 'en' || $code == 'enRTL' || ( is_array( $wgDummyLanguageCodes ) &&
			isset( $wgDummyLanguageCodes[$code] ) )
	) {
		continue;
	}

	# Calculate the numbers
	$language = Language::fetchLanguageName( $code );
	$fallback = $languages->getFallback( $code );
	$messages = $languages->getMessages( $code );
	$messagesNumber = count( $messages['translated'] );
	$requiredMessagesNumber = count( $messages['required'] );
	$requiredMessagesPercent = $output->formatPercent(
		$requiredMessagesNumber,
		$wgRequiredMessagesNumber
	);
	$obsoleteMessagesNumber = count( $messages['obsolete'] );
	$obsoleteMessagesPercent = $output->formatPercent(
		$obsoleteMessagesNumber,
		$messagesNumber,
		true
	);
	$messagesWithMismatchVariables = $languages->getMessagesWithMismatchVariables( $code );
	$emptyMessages = $languages->getEmptyMessages( $code );
	$messagesWithWhitespace = $languages->getMessagesWithWhitespace( $code );
	$nonXHTMLMessages = $languages->getNonXHTMLMessages( $code );
	$messagesWithWrongChars = $languages->getMessagesWithWrongChars( $code );
	$problematicMessagesNumber = count( array_unique( array_merge(
		$messagesWithMismatchVariables,
		$emptyMessages,
		$messagesWithWhitespace,
		$nonXHTMLMessages,
		$messagesWithWrongChars
	) ) );
	$problematicMessagesPercent = $output->formatPercent(
		$problematicMessagesNumber,
		$messagesNumber,
		true
	);

	# Output them
	$output->blockstart();
	$output->element( "$language" );
	$output->element( "$code" );
	$output->element( "$fallback" );
	$output->element( "$requiredMessagesNumber/$wgRequiredMessagesNumber" );
	$output->element( $requiredMessagesPercent );
	$output->element( "$obsoleteMessagesNumber/$messagesNumber" );
	$output->element( $obsoleteMessagesPercent );
	$output->element( "$problematicMessagesNumber/$messagesNumber" );
	$output->element( $problematicMessagesPercent );
	$output->blockend();
}

# Footer
$output->footer();
