<?php

namespace app\service;

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

class OssService
{
    private $accessKeyId;
    private $accessKeySecret;
    private $bucket;
    private $endpoint;
    private $ossClient;

    public function __construct()
    {
        $this->accessKeyId = 'LTAI5tAGiH7bkVkmrniXnfkA';
        $this->accessKeySecret = 'nqklJBft6t3S0A4ZvxF4ci9ni91kmm';
        $this->bucket = 'vehicle-album';
        $this->endpoint = 'https://oss-cn-beijing.aliyuncs.com';
        $this->ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);
    }

    /**
     * 上传图片到 OSS
     * @param string $filePath 本地文件路径
     * @param string $objectKey OSS上存储的对象名称
     * @return string 图片的 URL
     */
    public function uploadImage($filePath, $objectKey)
    {
        try {
            // 上传文件到 OSS
            $this->ossClient->uploadFile($this->bucket, $objectKey, $filePath);
            // 构造图片的私有 URL
            $url = $this->generatePrivateUrl($objectKey);
            return $url;
        } catch (OssException $e) {
            // 错误处理
            throw new \RuntimeException('OSS Error: ' . $e->getMessage());
        }
    }

    /**
     * 生成图片的私有访问 URL
     * @param string $objectKey
     * @return string
     */
    public function generatePrivateUrl($objectKey, $expireTime = 3600)
    {
        // 生成 OSS 私有 URL（有效期为 3600 秒）
        return $this->ossClient->signUrl($this->bucket, $objectKey, $expireTime);
    }
}