public function createImage($request, $db)
{
if (!isset($request->user_id)) {
throw new Exception("You must be logged in to create data", 401);
}
$event_id = $this->getItemId($request);
$event_mapper = new EventMapper($db, $request);
// ensure event exists
$existing_event = $event_mapper->getEventById($event_id, false, true);
if ($existing_event['meta']['count'] == 0) {
throw new Exception('There is no event with ID ' . $event_id);
}
if (!$event_mapper->thisUserHasAdminOn($event_id)) {
throw new Exception("You don't have permission to do that", 403);
}
if (!isset($_FILES['image'])) {
throw new Exception("Image was not supplied", 400);
}
if ($_FILES['image']['error'] != 0) {
throw new Exception("Image upload failed (Code: " . $FILES['image']['error'] . ")", 400);
}
// check the file meets our expectations
$uploaded_name = $_FILES['image']['tmp_name'];
list($width, $height, $filetype) = getimagesize($uploaded_name);
// must be gif, jpg or png
if (!in_array($filetype, [IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG], true)) {
throw new Exception("Supplied image must be a PNG, JPG or GIF", 400);
}
// must be square
if ($width != $height) {
throw new Exception("Supplied image must be square", 400);
}
// 140px min, 1440px max
if ($width < 140) {
throw new Exception("Supplied image must be at least 140px square", 400);
}
if ($width > 1440) {
throw new Exception("Supplied image must be no more than 1440px square", 400);
}
// save the file - overwrite current one if there is one
$extensions[IMAGETYPE_GIF] = '.gif';
$extensions[IMAGETYPE_JPEG] = '.jpg';
$extensions[IMAGETYPE_PNG] = '.png';
$saved_filename = 'icon-' . $event_id . '-orig' . $extensions[$filetype];
$event_image_path = $request->getConfigValue('event_image_path');
$result = move_uploaded_file($uploaded_name, $event_image_path . $saved_filename);
if (false === $result) {
throw new Exception("The file could not be saved");
}
// remove old images from database table and record that we saved the file (this is the orig size)
$event_mapper->removeImages($event_id);
$event_mapper->saveNewImage($event_id, $saved_filename, $width, $height, "orig");
// small is 140px square
$orig_image = imagecreatefromstring(file_get_contents($event_image_path . $saved_filename));
imagealphablending($orig_image, false);
imagesavealpha($orig_image, true);
$small_width = 140;
$small_height = 140;
$small_image = imagecreatetruecolor($small_width, $small_height);
imagealphablending($small_image, false);
imagesavealpha($small_image, true);
imagecopyresampled($small_image, $orig_image, 0, 0, 0, 0, $small_width, $small_height, $width, $height);
$small_filename = str_replace('orig', 'small', $saved_filename);
if ($filetype == IMG_JPG) {
imagejpeg($small_image, $event_image_path . $small_filename);
} elseif ($filetype == IMG_GIF) {
imagegif($small_image, $event_image_path . $small_filename);
} else {
imagepng($small_image, $event_image_path . $small_filename);
}
$event_mapper->saveNewImage($event_id, $small_filename, $small_width, $small_height, "small");
$location = $request->base . '/' . $request->version . '/events/' . $event_id;
header('Location: ' . $location, null, 201);
}
