<?php
/**
 * BarcodeQR - Code QR Barcode Image Generator (PNG)
 *
 * @package BarcodeQR
 * @category BarcodeQR
 * @name BarcodeQR
 * @version 1.0
 * @author Shay Anderson 05.11
 * @link http://www.shayanderson.com/php/php-qr-code-generator-class.htm
 * @license http://www.gnu.org/licenses/gpl.html GPL License
 * This is free software and is distributed WITHOUT ANY WARRANTY
 */
final class QrCode {

	private $API_CHART_URL = '';
	private $taille = '150';
	private $contenu;
	private $urlQrCodeTpl;
	private $dossierQrCode;

	public function __construct($conteneur) {
		$this->API_CHART_URL = $conteneur->getParametre('urlApiChart');
		$this->dossierQrCode = $conteneur->getParametre('dossierQrCode');
		$this->urlQrCodeTpl = $conteneur->getParametre('urlQrCodeTpl');
	}

	/**
	 * URL code
	 *
	 * @param string $url
	 */
	public function setUrl($url = '') {
		$this->contenu = $url;
	}

	/**
	 * Taille du QRcode en pixel. Cela sera forcément un carré.
	 *
	 * @param string $taille
	 */
	public function setTaille($taille) {
		$this->taille = $taille;
	}

	/**
	 * Generate QR code image
	 *
	 * @param string $filename
	 * @return bool
	 */
	public function dessiner($idQrCode = null) {
		if (!preg_match('/\.png$/i', $idQrCode)) {
			$idQrCode .= '.png';
		}
		$cheminImg = $this->dossierQrCode.$idQrCode;
		if (file_exists($cheminImg) == false) {
			$ch = curl_init();
			// For Debugging
			//curl_setopt($ch, CURLOPT_VERBOSE, TRUE);
			//curl_setopt($ch, CURLOPT_STDERR, $f = fopen("$cheminImg.txt", "w+"));

			curl_setopt($ch, CURLOPT_URL, $this->API_CHART_URL);
			curl_setopt($ch, CURLOPT_POST, true);
			curl_setopt($ch, CURLOPT_POSTFIELDS, "chs={$this->taille}x{$this->taille}&cht=qr&chl=".urlencode($this->contenu));
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($ch, CURLOPT_HEADER, false);
			curl_setopt($ch, CURLOPT_TIMEOUT, 30);
			$img = curl_exec($ch);
			curl_close($ch);

			// For Debugging
			//fclose($f);

			file_put_contents($cheminImg, $img);
		}
		$urlQrCode = sprintf($this->urlQrCodeTpl, $idQrCode);
		return $urlQrCode;
	}
}
?>