<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

// Vérification de base
if (empty($_GET['svg'])) {
	die(json_encode(['status' => 'error']));
}

// Récupération du code SVG
$svg = stripslashes(urldecode($_GET['svg']));

// Création d'un nom de fichier aléatoire
$tod = gettimeofday();
$name = 'tetenrond-' . $tod['sec'] . $tod['usec'] . '-' . rand(0, 50);
$final_filename = $name . '.zip';

// Enregistrement du SVG et du PNG associé
file_put_contents('tmp/' . $name . '.svg', $svg);
$im = new \Imagick();
$im->readImageBlob($svg);
$im->setImageFormat("png24");
$im->writeImage('tmp/' . $name . '.png');
$im->clear();
$im->destroy();

//exec('PATH=$PATH:~/bin/&&convert tmp/'.$name.'.svg tmp/'.$name.'.png', $output, $return_var);

// Création du fichier zip contenant les 2 fichiers et renvoi de la réponse
if (create_zip(['tmp/' . $name . '.svg', 'tmp/' . $name . '.png'], 'tmp/' . $final_filename)) {
	echo json_encode(['status' => '200', 'url' => $final_filename]);
} else {
	echo json_encode(['status' => 'error']);
}

function create_zip($files = [], $destination = '', $overwrite = false)
{
	//if the zip file already exists and overwrite is false, return false
	if (file_exists($destination) && !$overwrite) {
		return false;
	}
	//vars
	$valid_files = array();
	//if files were passed in...
	if (is_array($files)) {
		//cycle through each file
		foreach ($files as $file) {
			//make sure the file exists
			if (file_exists($file)) {
				$valid_files[] = $file;
			}
		}
	}
	//if we have good files...
	if (count($valid_files)) {
		//create the archive
		$zip = new ZipArchive();
		if ($zip->open($destination, $overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
			return false;
		}
		//add the files
		foreach ($valid_files as $file) {
			$zip->addFile($file, substr($file, 4));
		}
		
		//close the zip -- done!
		$zip->close();
		
		foreach ($valid_files as $file) {
			unlink($file);
		}
		
		//check to make sure the file exists
		return file_exists($destination);
	} else {
		return false;
	}
}