2025-02-17 20:16:46 +01:00
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<?php
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require_once '../../includes/config.php';
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require_once '../../includes/auth.php';
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class AboutImageUploadHandler {
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private $uploadDir;
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private $allowedTypes = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'];
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private $maxFileSize = 5242880; // 5MB
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private $maxWidth = 1200;
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private $maxHeight = 1200;
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public function __construct() {
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$this->uploadDir = __DIR__ . '/../../assets/images/about/';
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$this->ensureUploadDirectory();
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}
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public function handleUpload($file) {
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try {
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// Vérifications de base
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if ($file['error'] !== UPLOAD_ERR_OK) {
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throw new Exception($this->getUploadErrorMessage($file['error']));
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}
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// Vérification du type MIME
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$finfo = new finfo(FILEINFO_MIME_TYPE);
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$mimeType = $finfo->file($file['tmp_name']);
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if (!in_array($mimeType, $this->allowedTypes)) {
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throw new Exception('Type de fichier non autorisé. Types acceptés : JPG, PNG, GIF, WEBP');
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}
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// Vérification de la taille
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if ($file['size'] > $this->maxFileSize) {
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throw new Exception('Fichier trop volumineux. Taille maximum : 5MB');
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}
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// Vérification et redimensionnement de l'image
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[$width, $height, $type] = getimagesize($file['tmp_name']);
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$needsResize = $width > $this->maxWidth || $height > $this->maxHeight;
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// Génération d'un nom de fichier unique
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$extension = $this->getExtensionFromMimeType($mimeType);
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$filename = uniqid() . '.' . $extension;
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$targetPath = $this->uploadDir . $filename;
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if ($needsResize) {
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// Calcul des nouvelles dimensions en conservant le ratio
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$ratio = min($this->maxWidth / $width, $this->maxHeight / $height);
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$newWidth = round($width * $ratio);
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$newHeight = round($height * $ratio);
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// Création de la nouvelle image
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$sourceImage = $this->createImageFromFile($file['tmp_name'], $mimeType);
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$newImage = imagecreatetruecolor($newWidth, $newHeight);
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// Préservation de la transparence pour PNG
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if ($mimeType === 'image/png') {
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imagealphablending($newImage, false);
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imagesavealpha($newImage, true);
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}
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// Redimensionnement
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imagecopyresampled(
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$newImage, $sourceImage,
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0, 0, 0, 0,
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$newWidth, $newHeight,
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$width, $height
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);
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// Sauvegarde de l'image redimensionnée
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$this->saveImage($newImage, $targetPath, $mimeType);
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// Libération de la mémoire
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imagedestroy($sourceImage);
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imagedestroy($newImage);
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} else {
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// Déplacement du fichier original si pas besoin de redimensionnement
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if (!move_uploaded_file($file['tmp_name'], $targetPath)) {
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throw new Exception('Erreur lors du déplacement du fichier uploadé');
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}
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}
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// Retourner le chemin relatif pour l'éditeur
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return [
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'success' => true,
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2025-02-18 00:20:13 +01:00
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'url' => $filename,
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'storage_url' => 'assets/images/about/' . $filename,
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2025-02-17 20:16:46 +01:00
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'width' => $needsResize ? $newWidth : $width,
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'height' => $needsResize ? $newHeight : $height
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];
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} catch (Exception $e) {
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return [
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'success' => false,
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'error' => $e->getMessage()
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];
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}
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}
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private function ensureUploadDirectory() {
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if (!file_exists($this->uploadDir)) {
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if (!mkdir($this->uploadDir, 0755, true)) {
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throw new Exception('Impossible de créer le dossier d\'upload');
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}
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}
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if (!is_writable($this->uploadDir)) {
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throw new Exception('Le dossier d\'upload n\'est pas accessible en écriture');
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}
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}
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private function createImageFromFile($file, $mimeType) {
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switch ($mimeType) {
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case 'image/jpeg':
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return imagecreatefromjpeg($file);
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case 'image/png':
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return imagecreatefrompng($file);
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case 'image/gif':
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return imagecreatefromgif($file);
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case 'image/webp':
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return imagecreatefromwebp($file);
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default:
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throw new Exception('Type d\'image non supporté');
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}
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}
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private function saveImage($image, $path, $mimeType) {
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switch ($mimeType) {
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case 'image/jpeg':
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return imagejpeg($image, $path, 85);
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case 'image/png':
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return imagepng($image, $path, 8);
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case 'image/gif':
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return imagegif($image, $path);
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case 'image/webp':
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return imagewebp($image, $path, 85);
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default:
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throw new Exception('Type d\'image non supporté pour la sauvegarde');
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}
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}
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private function getExtensionFromMimeType($mimeType) {
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$map = [
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'image/jpeg' => 'jpg',
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'image/png' => 'png',
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'image/gif' => 'gif',
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'image/webp' => 'webp'
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];
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return $map[$mimeType] ?? 'jpg';
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}
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private function getUploadErrorMessage($error) {
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$errors = [
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UPLOAD_ERR_INI_SIZE => 'Le fichier dépasse la taille maximale autorisée par PHP',
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UPLOAD_ERR_FORM_SIZE => 'Le fichier dépasse la taille maximale autorisée par le formulaire',
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UPLOAD_ERR_PARTIAL => 'Le fichier n\'a été que partiellement uploadé',
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UPLOAD_ERR_NO_FILE => 'Aucun fichier n\'a été uploadé',
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UPLOAD_ERR_NO_TMP_DIR => 'Dossier temporaire manquant',
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UPLOAD_ERR_CANT_WRITE => 'Échec de l\'écriture du fichier sur le disque',
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UPLOAD_ERR_EXTENSION => 'Une extension PHP a arrêté l\'upload'
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];
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return $errors[$error] ?? 'Erreur inconnue lors de l\'upload';
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}
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}
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// Point d'entrée du script
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if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
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http_response_code(405);
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exit(json_encode(['error' => 'Méthode non autorisée']));
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}
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// Vérification de l'authentification
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if (!Auth::check()) {
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http_response_code(401);
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exit(json_encode(['error' => 'Non autorisé']));
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}
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// Traitement de l'upload
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try {
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$handler = new AboutImageUploadHandler();
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$result = $handler->handleUpload($_FILES['image']);
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if (!$result['success']) {
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http_response_code(400);
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}
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header('Content-Type: application/json');
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echo json_encode($result);
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} catch (Exception $e) {
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http_response_code(500);
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echo json_encode([
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'success' => false,
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'error' => 'Erreur serveur : ' . $e->getMessage()
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]);
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}
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