generateRandomSandboxData.php
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generateRandomSandboxData.php
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	<?php
	/**
	* Script to generate some random data to help testing sandbox.
	*
	* @author Niklas Laxström
	* @license GPL-2.0-or-later
	* @file
	*/

	use MediaWiki\Extension\Translate\Services;
	use MediaWiki\Extension\Translate\TranslatorSandbox\StashedTranslation;
	use MediaWiki\Extension\Translate\TranslatorSandbox\TranslationStashStorage;
	use MediaWiki\Maintenance\Maintenance;
	use MediaWiki\Title\Title;

	// Standard boilerplate to define $IP
	if ( getenv( 'MW_INSTALL_PATH' ) !== false ) {
	$IP = getenv( 'MW_INSTALL_PATH' );
	} else {
	$dir = __DIR__;
	$IP = "$dir/../../..";
	}
	require_once "$IP/maintenance/Maintenance.php";

	class TranslateGenerateRandomSandboxData extends Maintenance {

	public function execute() {
	$users = 10;

	// For number of translations, limited to [0,20]
	$mean = 15;
	$stddev = 20;

	$stash = new TranslationStashStorage( $this->getDB( DB_PRIMARY ) );

	$languages = array_keys( $this->getServiceContainer()->getLanguageNameUtils()->getLanguageNames() );

	$translateSandbox = Services::getInstance()->getTranslateSandbox();
	for ( $i = 0; $i < $users; $i++ ) {
	$username = 'Pupu' . wfRandomString( 6 );
	$password = wfRandomString( 12 );
	$email = "$username.$password@blackhole.io";
	$user = $translateSandbox->addUser( $username, $password, $email );

	$language = $languages[rand( 0, count( $languages ) - 1 )];

	$count = wfGaussMs( $mean, $stddev );
	$count = min( 20, $count );
	$count = max( 0, $count );

	for ( $j = 0; $j < $count; $j++ ) {
	$title = Title::makeTitle( NS_MEDIAWIKI, wfRandomString( 24 ) . '/' . $language );

	$value = [ 'Pupu söi' ];
	for ( $k = rand( 0, 20 ); $k > 0; $k-- ) {
	$value[] = wfRandomString( rand( 1, 28 ) );
	}

	$value = implode( "\n", $value );
	$translation = new StashedTranslation( $user, $title, $value );
	$stash->addTranslation( $translation );
	}
	}
	}
	}

	/*
	* Gauss functions are based on Mark Baker's code from
	* https://stackoverflow.com/questions/5188900/bell-curve-algorithm-with-php
	*/

	function wfGauss(): float {
	static $useExists = false;
	static $useValue;

	if ( $useExists ) {
	// Use value from a previous call to this function
	$useExists = false;
	return $useValue;
	} else {
	// Polar form of the Box-Muller transformation
	$w = 2.0;
	while ( ( $w >= 1.0 ) \|\| ( $w == 0.0 ) ) {
	$x = wfRandomPn();
	$y = wfRandomPn();
	$w = ( $x * $x ) + ( $y * $y );
	}
	$w = sqrt( ( -2.0 * log( $w ) ) / $w );

	// Set value for next call to this function
	$useValue = $y * $w;
	$useExists = true;

	return $x * $w;
	}
	}

	function wfGaussMs( int $mean, int $stddev ): int {
	// Adjust our gaussian random to fit the mean and standard deviation.
	// The division by 4 is an arbitrary value to help fit the distribution
	// within our required range, and gives a best fit for $stddev = 1.0.
	return wfGauss() * ( $stddev / 4 ) + $mean;
	}

	function wfRandom01(): float {
	// Returns random number using mt_rand() with a flat distribution from 0 to 1 inclusive
	return (float)mt_rand() / (float)mt_getrandmax();
	}

	function wfRandomPn(): float {
	// Returns random number using mt_rand() with a flat distribution from -1 to 1 inclusive
	return ( 2.0 * wfRandom01() ) - 1.0;
	}

	$maintClass = TranslateGenerateRandomSandboxData::class;
	require_once RUN_MAINTENANCE_IF_MAIN;

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