<?php

namespace App\Service\common\upload;

use App\BaseApp\BaseService;
use Exception;
use Qiniu\Auth;
use Qiniu\Storage\BucketManager;
use Qiniu\Storage\UploadManager;

class QiniuStorageService extends BaseService
{
    /**
     * @var mixed 单例实例，确保该类只有一个全局实例
     */
    protected static mixed $_instance;
    private $accessKey;
    private $secretKey;
    private $bucket;
    private $domain;

    public function __construct()
    {
        parent::__construct();
        $this->accessKey = config('cc.oss.qiniu.access_key');
        $this->secretKey = config('cc.oss.qiniu.secret_key');
        $this->bucket = config('cc.oss.qiniu.bucket');
        $this->domain = config('cc.oss.qiniu.domain');
    }


    /**
     * 获取实例
     * @return null|static
     */
    public static function getInstance(): null|static
    {
        $name = get_called_class();
        if (!isset(self::$_instance[$name])) {
            self::$_instance[$name] = new static();
        }

        return self::$_instance[$name];
    }

    /**
     * 上传图片
     *
     * @param string $filePath 文件本地路径
     * @param string $key 上传到七牛云的文件名
     * @return array|bool
     * @throws Exception
     */
    public function uploadImage($filePath, $key): bool|array
    {
        return $this->uploadFile($filePath, $key);
    }

    /**
     * 上传视频
     *
     * @param string $filePath 文件本地路径
     * @param string $key 上传到七牛云的文件名
     * @return array|bool
     */
    public function uploadVideo($filePath, $key): bool|array
    {
        return $this->uploadFile($filePath, $key);
    }

    /**
     * 删除图片
     *
     * @param string $key 七牛云存储的文件名
     * @return bool
     */
    public function deleteImage($key): bool
    {
        return $this->deleteFile($key);
    }

    /**
     * 删除视频
     *
     * @param string $key 七牛云存储的文件名
     * @return bool
     */
    public function deleteVideo($key): bool
    {
        return $this->deleteFile($key);
    }

    /**
     * 上传文件
     *
     * @param string $filePath 文件本地路径
     * @param string $key 上传到七牛云的文件名
     * @return array|bool
     * @throws Exception
     */
    private function uploadFile(string $filePath, string $key): bool|array
    {
        $auth = new Auth($this->accessKey, $this->secretKey);
        $token = $auth->uploadToken($this->bucket);
        $uploadMgr = new UploadManager();

        list($ret, $err) = $uploadMgr->putFile($token, $key, $filePath);
        if ($err !== null) {
            return false;
        } else {
            return [
                'key' => $ret['key'],
                'url' => $this->domain . '/' . $ret['key']
            ];
        }
    }

    /**
     * 删除文件
     *
     * @param string $key 七牛云存储的文件名
     * @return bool
     */
    private function deleteFile(string $key): bool
    {
        $auth = new Auth($this->accessKey, $this->secretKey);
        $bucketMgr = new BucketManager($auth);

        $err = $bucketMgr->delete($this->bucket, $key);
        return $err === null;
    }
}