eliminazione file superflui, spostamento file read.php all'interno del progetto, aggiunta astrazione classe Qrcode, miglioramento download bulk, refactoring generale
Signed-off-by: giandonato.inverso@edempg.it <giandonato.inverso@studenti.unimi.it>
This commit is contained in:
Giandonato Inverso
committed by
giandonato.inverso@edempg.it
giandonato.inverso@edempg.it
parent
12e358b87c
commit
a2ce4b38b6
@@ -0,0 +1,252 @@
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<?php
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require_once 'config/config.php';
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class Qrcode {
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private string $table;
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private string $redirect_url;
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/**
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*
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*/
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public function __construct($type) {
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if($type === "static") {
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$this->table = DATABASE_PREFIX."static_qrcodes";
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$this->redirect_url = "static_qrcodes.php";
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} else if($type === "dynamic") {
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$this->table = DATABASE_PREFIX."dynamic_qrcodes";
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$this->redirect_url = "dynamic_qrcodes.php";
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} else {
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$this->redirect_url = "index.php";
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$this->failure("Type not allowed");
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}
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}
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/**
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*
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*/
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public function __destruct()
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{
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}
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public function getQrcode($id) {
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$db = getDbInstance();
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$db->where('id', $id);
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$result = $db->getOne($this->table);
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if($result !== NULL)
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return $result;
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else
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$this->failure("Qrcode not found");
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}
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/**
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* Set option for qr code like:
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* Error Correction Level, size (default = 100), foreground, background
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* return array of values
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*/
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private function setOptions($input_data) {
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$errorCorrectionLevel = 'L';
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if (isset($input_data['level']) && in_array($input_data['level'], array('L','M','Q','H')))
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$errorCorrectionLevel = $input_data['level'];
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$size = 100;
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if (isset($input_data['size']))
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$size = min(max((int)$input_data['size'], 100), 1000);
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//character # deleted
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$foreground = substr($input_data['foreground'], 1);
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$background = substr($input_data['background'], 1);
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//$logo = $_POST['optionlogo'];
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return array(
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"errorCorrectionLevel" => $errorCorrectionLevel,
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"size" => $size,
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"foreground" => $foreground,
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"background" => $background,
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//"optionlogo" => $logo,
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);
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}
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/**
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* Add qr code
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* Check out http://goqr.me/api/ for more information
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* We save the file obtained with the chosen name and in the selected folder
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* We save into db the url of qrcode image
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*/
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public function addQrcode($input_data, $data_to_db, $data_to_qrcode) {
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$options = $this->setOptions($input_data);
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if(!file_exists(SAVED_QRCODE_DIRECTORY.$data_to_db['filename'].'.'.$data_to_db['format'])){
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$url =
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'https://api.qrserver.com/v1/create-qr-code/?data='.
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$data_to_qrcode.
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'&&size='.$options['size'].'x'.$options['size'].
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'&ecc='.$options['errorCorrectionLevel'].
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'&margin=0&color='.$options['foreground'].
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'&bgcolor='.$options['background'].
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'&qzone=2'.
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'&format='.$data_to_db['format'];
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$content = file_get_contents($url);
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$filename = SAVED_QRCODE_DIRECTORY.$data_to_db['filename'].'.'.$data_to_db['format'];
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try{
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file_put_contents($filename, $content);
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}
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catch(Exception $e){
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$this->failure($e->getMessage());
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}
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// If you want you can customi<e qr code with logo
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//$this->addLogo($data_to_db['qrcode'], $options['optionlogo']);
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$db = getDbInstance();
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$last_id = $db->insert($this->table, $data_to_db);
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}
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else
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$this->failure('You cannot create a new qr code with an existing name on the server!');
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if ($last_id){
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$this->success('Qr code added successfully!');
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}
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else {
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$this->failure('Insert failed: ' . $db->getLastError());
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}
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}
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/**
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* Edit qr code
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*
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*/
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public function editQrcode($input_data, $data_to_db) {
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$db = getDbInstance();
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$old_qrcode = $this->getQrcode($input_data["id"]);
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$data_to_db['qrcode'] = $data_to_db['filename'].'.'.$old_qrcode["format"];
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if(!file_exists(SAVED_QRCODE_DIRECTORY.$data_to_db['filename'].'.'.$old_qrcode["format"]) || $data_to_db['filename'] == $input_data["old_filename"]){
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$db->where('id', $input_data["id"]);
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$stat = $db->update($this->table, $data_to_db);
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try{
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rename(SAVED_QRCODE_DIRECTORY.$old_qrcode["qrcode"], SAVED_QRCODE_DIRECTORY.$data_to_db['filename'].'.'.$old_qrcode["format"]);
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}
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catch(Exception $e){
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$this->failure($e->getMessage());
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}
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}
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else
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$this->failure('You cannot edit a qr code with an existing name on the server!');
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if ($stat){
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$this->success('Qr code updated successfully!');
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}
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else {
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$this->failure('Insert failed: ' . $db->getLastError());
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}
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}
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/**
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* Delete qr code
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*
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*/
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public function deleteQrcode($id) {
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if($_SESSION['admin_type'] !== 'super')
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$this->failure("You don't have permission to perform this action");
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$db = getDbInstance();
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$qrcode = $this->getQrcode($id);
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$db->where('id', $id);
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$status = $db->delete($this->table);
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try{
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unlink(SAVED_QRCODE_DIRECTORY.$qrcode["filename"].'.'.$qrcode["format"]);
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}
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catch(Exception $e){
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$this->failure($e->getMessage());
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}
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if ($status)
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$this->info('Qr code deleted successfully!');
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else
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$this->failure('Unable to delete qr code');
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}
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/**
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* Add logo
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* IMPORTANT: I do not recommend to use this option because there may be problems with the scanning of the qr code as some readers may not recognize the code
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*/
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private function addLogo($src, $logo = 'none') {
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try
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{
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if($logo != 'none')
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{
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$logo = imagecreatefrompng($_SERVER['HTTP_HOST'].'/admin'.$logo);
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$QR = imagecreatefrompng(BASE_PATH.$src);
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$QR_width = imagesx($QR);
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$QR_height = imagesy($QR);
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$logo_width = imagesx($logo);
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$logo_height = imagesy($logo);
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// Scale logo to fit in the QR Code
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$logo_qr_width = $QR_width/3;
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$scale = $logo_width/$logo_qr_width;
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$logo_qr_height = $logo_height/$scale;
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// You can try also with imagecopymerge() with same arguments
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imagecopyresampled($QR, $logo, $QR_width/3, $QR_height/3, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
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//$output = Set directory for saving image;
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header('Content-Type: image/png');
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imagepng($QR /*, $output*/);
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imagedestroy($QR);
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}
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}
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catch(Exception $e)
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{
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$this->failure($e->getMessage());
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}
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}
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/**
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* Flash message Failure process
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*/
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private function failure($message) {
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$_SESSION['failure'] = $message;
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header('Location: ' . $this->redirect_url);
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exit();
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}
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/**
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* Flash message Success process
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*/
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private function success($message) {
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$_SESSION['success'] = $message;
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header('Location: ' . $this->redirect_url);
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exit();
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}
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/**
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* Flash message Info process
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*/
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private function info($message) {
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$_SESSION['info'] = $message;
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header('Location: ' . $this->redirect_url);
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exit();
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}
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public function debug($data) {
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echo '<pre>' . var_export($data, true) . '</pre>';
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exit();
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}
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}
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?>
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