<?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()
    {
        try {
            $this->accessKeyId = getenv('OSS_ACCESS_KEY_ID');
            $this->accessKeySecret = getenv('OSS_ACCESS_KEY_SECRET');
            $this->bucket = getenv('OSS_BUCKET', 'vehicle-info');
            $this->endpoint = getenv('OSS_ENDPOINT', 'https://oss-ap-southeast-1.aliyuncs.com');

            // 记录配置信息
            error_log("OSS Configuration:");
            error_log("AccessKeyId: " . substr($this->accessKeyId, 0, 4) . "****");
            error_log("Bucket: " . $this->bucket);
            error_log("Endpoint: " . $this->endpoint);

            $this->ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);

            // 测试连接
            $this->ossClient->doesBucketExist($this->bucket);
        } catch (OssException $e) {
            error_log("OSS Client Initialization Error: " . $e->getMessage());
            throw new \RuntimeException('OSS Client Initialization Error: ' . $e->getMessage());
        }
    }

    /**
     * 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)
    {
        try {
            // 生成 OSS 私有 URL
            $url = $this->ossClient->signUrl($this->bucket, $objectKey, $expireTime);

            // 解析 URL 以获取查询参数
            $parsedUrl = parse_url($url);
            parse_str($parsedUrl['query'], $queryParams);

            // 重新构建 URL，使用 rawurlencode 确保正确的编码
            $baseUrl = $parsedUrl['scheme'] . '://' . $parsedUrl['host'] . $parsedUrl['path'];
            $queryString = http_build_query($queryParams, '', '&', PHP_QUERY_RFC3986);

            // 重新组合 URL
            $url = $baseUrl . '?' . $queryString;

            return $url;
        } catch (OssException $e) {
            error_log("OSS Error: " . $e->getMessage());
            throw new \RuntimeException('OSS Error: ' . $e->getMessage());
        }
    }
}