/**
* Upload Avatar from Base64 encoded image
*
* @param \RainLab\User\Models\User $user
* @param string $source
* string contend of an image on Base64 enconding
*/
public static function uploadAvatarFromString($user, $source)
{
$dst = '/tmp/avatar_' . $user->getKey() . '_' . uniqid();
FileHelper::put($dst, base64_decode($source));
$validImage = true;
try {
// Validated is a JPG or PNG
$imageType = exif_imagetype($dst);
$validImage = in_array($imageType, [IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_GIF]);
// Validated is not bigger that xx by xx
if ($validImage) {
// Test if image is corrupted if OctoberCMS Resizer can open it
// is more likely the image is ok
Resizer::open($dst);
// Test image dimensions
list($width, $height, $type, $attr) = getimagesize($dst);
$validImage = $width <= 400 && $height <= 400;
}
// Add right file extension to the upload file
if ($validImage) {
// Save image with correct image extension
$extension = [IMAGETYPE_JPEG => 'jpg', IMAGETYPE_PNG => 'png', IMAGETYPE_GIF => 'gif'][$imageType];
$newDst = $dst . '.' . $extension;
rename($dst, $newDst);
$dst = $newDst;
}
} catch (\Exception $e) {
$validImage = false;
}
if (!$validImage) {
throw new \Exception('Must be a valid JPG, GIF or PNG. And not bigger that 400x400 pixels.');
}
$file = new File();
$file->data = $dst;
$file->is_public = true;
$file->save();
if ($file) {
$user->avatar()->add($file);
}
}
