<?php
// +----------------------------------------------------------------------
// | Niucloud-admin 企业快速开发的多应用管理平台
// +----------------------------------------------------------------------
// | 官方网址：https://www.niucloud.com
// +----------------------------------------------------------------------
// | niucloud团队 版权所有 开源版本可自由商用
// +----------------------------------------------------------------------
// | Author: Niucloud Team
// +----------------------------------------------------------------------

namespace app\adminapi\controller\upload;

use core\base\BaseAdminController;
use core\exception\AdminException;

/**
 * 腾讯云COS代理上传（临时开发环境解决方案）
 * 注意：生产环境应该直接配置COS的CORS规则而不是使用代理
 */
class CosProxy extends BaseAdminController
{
    /**
     * 代理上传到腾讯云COS
     * @return \think\Response
     */
    public function proxyUpload()
    {
        try {
            // 从表单或JSON中获取数据
            $upload_url = $this->request->post('upload_url');
            
            // 尝试多种方式获取表单数据
            $form_data = [];
            
            // 方式1: 从form_data字段获取JSON字符串
            $form_data_json = $this->request->post('form_data', '');
            if (!empty($form_data_json)) {
                $form_data = json_decode($form_data_json, true);
                if (json_last_error() === JSON_ERROR_NONE) {
                    // JSON解析成功
                } else {
                    $form_data = [];
                }
            }
            
            // 如果JSON解析失败，检查是否有独立的字段
            if (empty($form_data)) {
                $possible_fields = ['key', 'policy', 'q-sign-algorithm', 'q-ak', 'q-key-time', 'q-signature', 'domain'];
                foreach ($possible_fields as $field) {
                    $value = $this->request->post($field);
                    if (!empty($value)) {
                        $form_data[$field] = $value;
                    }
                }
            }
            
            if (empty($upload_url)) {
                throw new AdminException('缺少上传地址');
            }
            
            // 处理文件上传
            $file = $this->request->file('file');
            if (empty($file)) {
                throw new AdminException('缺少上传文件');
            }
            
            // 添加调试模式 - 如果upload_url包含debug，则返回解析的数据不执行实际上传
            if (strpos($upload_url, 'debug') !== false) {
                return success([
                    'debug' => true,
                    'upload_url' => $upload_url,
                    'form_data' => $form_data,
                    'form_data_count' => count($form_data),
                    'file_info' => [
                        'name' => $file->getOriginalName(),
                        'size' => $file->getSize(),
                        'mime' => $file->getMime()
                    ]
                ]);
            }
            
            // 腾讯云COS要求特定的字段顺序
            $post_data = [];
            
            // 添加所有表单字段，确保file在最后
            foreach ($form_data as $key => $value) {
                $post_data[$key] = $value;
            }
            
            // 最后添加文件（腾讯云COS要求file字段在最后）
            $curl_file = new \CURLFile($file->getPathname(), $file->getMime(), $file->getOriginalName());
            $post_data['file'] = $curl_file;
            
            // 发送请求到腾讯云COS
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $upload_url);
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_TIMEOUT, 60);
            curl_setopt($ch, CURLOPT_HEADER, true);
            
            $full_response = curl_exec($ch);
            $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
            $header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
            $error = curl_error($ch);
            curl_close($ch);
            
            if ($error) {
                throw new AdminException('上传失败: ' . $error);
            }
            
            // 解析响应头和内容
            $header = substr($full_response, 0, $header_size);
            $body = substr($full_response, $header_size);
            
            if ($http_code === 204 || $http_code === 200) {
                // 上传成功
                $domain = rtrim($form_data['domain'] ?? '', '/');
                $key = $form_data['key'] ?? '';
                $file_url = $domain . '/' . $key;
                
                return success([
                    'url' => $file_url,
                    'http_code' => $http_code,
                    'response_body' => substr($body, 0, 100) // 调试信息
                ]);
            } else {
                throw new AdminException("上传失败，HTTP状态码: {$http_code}, 响应: " . substr($body, 0, 200));
            }
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }
}