Initial commit
Couldnt keep the history unfortunately.
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Riyyi
@@ -0,0 +1,282 @@
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<?php
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namespace App\Classes;
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use App\Model\MediaModel;
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class Media {
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public static $pagination = 20;
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public static $directory = 'media';
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public static function errorMessage(int $errorCode): string
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{
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// https://www.php.net/manual/en/features.file-upload.errors.php
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$errorMessages = [
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0 => 'Uploaded with success.',
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1 => 'Uploaded file exceeds the maximum upload size. (1)', // php.ini
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2 => 'Uploaded file exceeds the maximum upload size. (2)', // HTML Form
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3 => 'Uploaded file was only partially uploaded.',
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4 => 'No file was uploaded.',
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6 => 'Missing a temporary folder.',
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7 => 'Failed to write file to disk.',
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8 => 'A PHP extension stopped the file upload.',
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9 => 'User was not logged in.',
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10 => 'Missing media folder.',
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11 => 'Uploaded file has invalid MIME type.',
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12 => 'Uploaded file exceeds the maximum upload size. (3)', // Media.php
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13 => 'Uploaded file already exists.',
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14 => 'DB entry creation failed.',
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15 => 'Moving file from temporary location failed.',
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];
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return $errorMessages[$errorCode];
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}
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public static function deleteMedia(int $id): bool
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{
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if (!User::check()) {
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return false;
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}
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$media = MediaModel::find($id);
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if (!$media->exists()) {
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return false;
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}
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// Delete file
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$file = self::$directory . '/' . $media->filename . '.' . $media->extension;
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if (file_exists($file)) {
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unlink($file);
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}
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return $media->delete();
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}
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public static function uploadMedia(bool $overwrite = false): int
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{
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// Check if User is logged in
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if (!User::check()) {
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return 9;
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}
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// Check if "media" directory exists
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if (!is_dir(self::$directory) && !mkdir(self::$directory, 0755)) {
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return 10;
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}
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$files = $_FILES['file'];
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// Check for file errors
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foreach ($files['error'] as $error) {
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if ($error != 0) {
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return $error;
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}
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}
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if (!Media::checkMimeType($files['type'], $files['tmp_name'])) {
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return 11;
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}
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if (!Media::checkSize($files['size'])) {
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return 12;
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}
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// Append random string to filename that already exists
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$nameExt = Media::duplicateName($files['name'], $overwrite);
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// Check if the file already exists
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$hash = Media::hashExists($files['tmp_name']);
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if (!$hash[0]) {
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return 13;
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}
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$count = count($files['name']);
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for ($i = 0; $i < $count; $i++) {
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$filename = $nameExt[0][$i];
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$extension = $nameExt[1][$i];
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$md5 = $hash[1][$i];
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$tmpName = $files['tmp_name'][$i];
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// Store record
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$media = MediaModel::create([
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'filename' => $filename,
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'extension' => $extension,
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'md5' => $md5,
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]);
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if (!$media->exists()) {
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return 14;
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}
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// Store image
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$name = self::$directory . '/'. $filename . '.' . $extension;
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if (!move_uploaded_file($tmpName, $name)) {
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return 15;
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}
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// After storing successfully, remove old entries with duplicate names
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if ($overwrite) {
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Media::destroyDuplicates($filename, $extension);
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}
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}
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return 0;
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}
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//-------------------------------------//
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private static function checkMimeType(array $fileTypes, array $fileTmpNames): bool
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{
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$allowedMimeType = [
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// .tar.gz
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'application/gzip',
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'application/json',
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'application/octet-stream',
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'application/pdf',
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'application/sql',
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// .tar.xz
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'application/x-xz',
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'application/xml',
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'application/zip',
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'audio/mp3',
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'audio/mpeg',
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'audio/ogg',
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'audio/wav',
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'audio/webm',
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'image/jpg',
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'image/jpeg',
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'image/png',
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'image/gif',
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'text/plain',
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'text/csv',
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'text/xml',
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'video/mp4',
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'video/webm',
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// .doc
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'application/msword',
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// .xls
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'application/vnd.ms-excel',
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// .ppt
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'application/vnd.ms-powerpoint',
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// .docx
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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// .xlsx
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'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
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// .pptx
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'application/vnd.openxmlformats-officedocument.presentationml.presentation',
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];
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// Files type check
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$count = count($fileTypes);
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for ($i = 0; $i < $count; $i++) {
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if ($fileTypes[$i] != mime_content_type($fileTmpNames[$i]) ||
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!in_array($fileTypes[$i], $allowedMimeType)) {
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return false;
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}
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}
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return true;
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}
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private static function checkSize(array $fileSizes): bool
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{
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// Files should not exceed 10MiB
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foreach ($fileSizes as $fileSize) {
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if ($fileSize > 10485760) {
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return false;
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}
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}
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return true;
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}
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private static function duplicateName(array $filenames, bool $overwrite): array
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{
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// Split name from extension
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$names = [];
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$extensions = [];
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foreach ($filenames as $name) {
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$dotPos = strrpos($name, '.');
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$names[] = substr($name, 0, $dotPos);
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$extensions[] = substr($name, $dotPos + 1);
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}
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// Early return if names are specified to be overwritten
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if ($overwrite) {
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return [$names, $extensions];
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}
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// Get duplicate filenames
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$in1 = str_repeat('?, ', count($names) - 1) . '?';
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$in2 = str_repeat('?, ', count($extensions) - 1) . '?';
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$data = array_merge($names, $extensions);
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$duplicates = MediaModel::selectAll(
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'*', "WHERE filename IN ($in1) AND extension IN ($in2)", $data, '?'
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);
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foreach ($filenames as $key => $filename) {
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$hasDuplicate = false;
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foreach ($duplicates as $duplicate) {
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if ($filename == $duplicate['filename'] . '.' . $duplicate['extension']) {
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$hasDuplicate = true;
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break;
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}
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}
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// Append to filename if there are duplicates
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if ($hasDuplicate) {
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$names[$key] = $names[$key] . '-' . _randomStr(5);
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}
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}
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return [$names, $extensions];
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}
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private static function hashExists(array $fileTmpNames): array
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{
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$md5 = [];
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foreach ($fileTmpNames as $tmpName) {
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$md5[] = md5_file($tmpName);
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}
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// If exact file already exists
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$in = str_repeat('?, ', count($md5) - 1) . '?';
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$exists = MediaModel::selectAll(
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'*', "WHERE md5 IN ($in)", $md5, '?'
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);
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if (!empty($exists)) {
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return [false];
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}
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return [true, $md5];
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}
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private static function destroyDuplicates(string $filename, string $extension): void
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{
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$media = MediaModel::selectAll(
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'*', 'WHERE filename = ? AND extension = ? ORDER BY id ASC',
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[$filename, $extension], '?'
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);
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if (!_exists($media)) {
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return;
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}
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foreach ($media as $key => $value) {
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// Dont delete the new entry
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if ($key === array_key_last($media)) {
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return;
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}
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MediaModel::destroy($value['id']);
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}
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}
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}
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// @Todo
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// - If a file fails to store in the loop, destruct all files of that request, by tracking all IDs
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