/**
* 控制器执行主逻辑函数
* @example URL Structure http://www.miniyun.cn/api/thumbnails/<root>/<path>
* @version 0
* @method GET
* @param format
* <p>JPEG (default) or PNG. For images that are photos, JPEG should be preferred, while PNG is better for screenshots and digital art.</p>
* @param size
* <p>One of the following values (default small):</p>
* <p>value dimensions (px)</p>
* <p>small 32x32</p>
* <p>medium 64x64</p>
* <p>large 128x128</p>
* <p>s 64x64</p>
* <p>m 128x128</p>
* <p>l 640x480</p>
* <p>xl 1024x768</p>
* @return mixed $value 返回最终需要执行完的结果
*/
public function invoke($uri = null)
{
// 调用父类初始化函数，注册自定义的异常和错误处理逻辑
parent::init();
// 初始化缩略图处理类
$thumbnail_base = MThumbnailBase::initMThumbnailBase($uri);
$thumbnail_base->create();
$thumbnail_base->render();
}
/**
* 获得缩略图
* @param $key
* @param $path
* @param $size
* @return string
*/
public function thumbnail($key, $path, $size)
{
$link = MiniLink::getInstance()->getByKey($key);
if ($link !== NULL) {
$file = MiniFile::getInstance()->getById($link["file_id"]);
$parentPath = $file["file_path"];
if ($file !== NULL) {
$userId = $file["user_id"];
$absolutePath = MiniUtil::getAbsolutePath($userId, $path);
//必须限定子目录在外链目录下
if (strpos($absolutePath, $parentPath) == 0) {
$thumbnail = new MThumbnailBase();
$thumbnail->user_id = $file["user_id"];
$thumbnail->path = $path;
$thumbnail->size = $size;
$thumbnail->format = "jpg";
$thumbnail->create();
$thumbnail->render();
}
}
}
}
