<?php

namespace App\Service;

use OSS\Core\OssException;
use OSS\OssClient;

class OssService extends Service
{
    protected $accessKeyId;
    protected $accessKeySecret;
    protected $endpoint;
    protected $bucket;

    public function __construct()
    {
        $this->accessKeyId = config('aliyun.accessKeyId');
        $this->accessKeySecret = config('aliyun.accessKeySecret');
        $this->endpoint = config('aliyun.endpoint');
        // 存储空间名称
        $this->bucket = config('aliyun.ossBucket');
    }

    /**
     * @desc 添加文件
     * @param $filePath 上传的文件
     * @param $savePath 保存到oss的路径
     */
    public function uploadFile($filePath, $savePath)
    {
        try {
            $ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);
            $ossClient->uploadFile($this->bucket, $savePath, $filePath);
        } catch (OssException $e) {
            return [false, $e->getMessage()];
        }
        return [true, ''];
    }

    /**
     * @desc 删除文件
     * @param deletePath oss的路径
     */
    public function deleteFile($deletePath)
    {
        try {
            $ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);
            $ossClient->deleteObject($this->bucket, $deletePath);
        } catch (OssException $e) {
            return [false, $e->getMessage()];
        }
        return [true, ''];
    }

    /**
     * @desc 下载文件
     * @param string $downLoadFile 下载文件地址
     * @param string $saveFile 保存地址
     */
    public function downLoadFile($downLoadFile, $saveFile)
    {
        $localfile = $saveFile;
        $options = array(
            OssClient::OSS_FILE_DOWNLOAD => $localfile
        );
        try {
            $ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);
            $ossClient->getObject($this->bucket, $downLoadFile, $options);
        } catch (OssException $e) {
            return [false, 'msg' => $e->getMessage()];
        }
        return [true, ''];
    }

    //生成临时文件
    public function getTemporaryUrl($objectKey)
    {
        $timeStamp = time();

        // 定义本地文件日志路径
        $localFilePath = storage_path('app/public/oss_file/' . md5($objectKey) . '.txt');

        $directoryPath = dirname($localFilePath);
        // 检查目录是否存在，如果不存在则创建
        if (! is_dir($directoryPath)) {
            // 设置目录权限，可以根据需要更改
            $mode = 0777;
            // 使用递归选项创建目录
            if (!mkdir($directoryPath, $mode, true)) return [false, '目录创建失败'];
        }

        $url = "";
        if(! file_exists($localFilePath)){
            $url = $this->createUrl($objectKey);
            $set = [
                'url' => $url,
                'timestamp' => $timeStamp + 3500,
            ];
            file_put_contents($localFilePath, json_encode($set));
        }else{
            $content = file_get_contents($localFilePath);
            $content = json_decode($content,true);
            if($content['timestamp'] < $timeStamp){
                $url = $this->createUrl($objectKey);
                $set = [
                    'url' => $url,
                    'timestamp' => $timeStamp + 3500,
                ];
                file_put_contents($localFilePath, json_encode($set));
            }else{
                $url = $content['url'];
            }
        }

        return [true, $url];
    }

    public function createUrl($objectKey, $expiration = 3600){
        // 初始化OSS客户端
        $ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);

        // 生成临时链接
        $url = $ossClient->signUrl(
            $this->bucket,
            $objectKey,
            $expiration,
            'GET' // 可选，指定HTTP方法，默认为 GET
        );

        return $url;
    }
}