<?php

namespace app\common\service\Oss;

use Exception;
use OSS\OssClient;
use RuntimeException;
use think\Config;

class Common
{
    protected $_ossClient = null;
    protected $_endpoint = '';
    protected $_accessKeyId = '';
    protected $_accessKeySecret = '';
    protected $_bucket = '';
    
    public function __construct($bucket = ''){
        $this->_endpoint = Config::get('OSS_ENDPOINT');
        $this->_accessKeyId = Config::get('OSS_ACCESS_KEY_ID');
        $this->_accessKeySecret = Config::get('ACCESS_KEY_SECRET');

        $this->setBucketName(!empty($bucket) ? $bucket : Config::get('ALIYUN_OSS_BUCKET'));
        
        if (is_file(EXTEND_PATH.'OSS/autoload.php')) {
            require_once EXTEND_PATH.'OSS/autoload.php';
        }         

        $this->getOssClient();
    }
    
    /**
     * 切换OSS Bucket
     * @param string $bucketName
     */
    public function setBucketName(string $bucketName) {
        $this->_bucket = $bucketName;
    }
    
    public function getBucketName() {
        return $this->_bucket;
    }

    /**
     * 根据Config配置，得到一个OssClient实例
     * @return OssClient
     */
    public function getOssClient() {
        if (empty($this->_ossClient)) {
            try {
                $this->_ossClient = new OssClient($this->_accessKeyId, $this->_accessKeySecret, $this->_endpoint, false);
            } catch (Exception $e) {
                throw new RuntimeException($e->getMessage());
            }
        }
        return $this->_ossClient;
    }
    
}