<?php
class Model_apittv1 extends Lin_Model {
    function __construct(){
            parent::__construct();
            $this->load->_model("Model_logic_ding","logic_ding");
    }


    private function sign($url,$header,$body,$secret){
        //解析URL
        $urlParts = parse_url($url);

        //获取路径
        $path = $urlParts['path']??'';

        //解析查询参数
        $queryParams = [];
        if(isset($urlParts['query'])){
            parse_str($urlParts['query'],$queryParams);
        }
        // 移除sign和access_token参数
        unset($queryParams['sign']);
        unset($queryParams['access_token']);
        
        // 按参数名排序
        ksort($queryParams);

        // 构建参数字符串
        $parameterStr = $path;
        foreach ($queryParams as $key => $value) {
            $parameterStr .= $key . $value;
        }

        // 检查Content-Type，如果不是multipart/form-data，则追加body
        $contentType = $this->getHeader($header, 'Content-Type');
        if (stripos($contentType, 'multipart/form-data') === false && !empty($body)) {
            $parameterStr .= $body;
        }
        
        // 用secret包裹参数字符串
        $signatureParams = $secret . $parameterStr . $secret;
        
        // 使用HMAC-SHA256生成签名
        return $this->generateSHA256($signatureParams, $secret);
    }

    private function getHeader($header,$name){
        $lowerName = strtolower($name);
        foreach ($header as $key => $value) {
            if (strtolower($key) === $lowerName) {
                return $value;
            }
        }
        return '';
    }

    private function generateSHA256($signatureParams, $secret){
        return hash_hmac('sha256', $signatureParams, $secret);
    }

     private function reqGet($url,$headers){
       
        // 初始化cURL
        $ch = curl_init();
        
        // 设置cURL选项
        curl_setopt_array($ch, [
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPGET => true, // 明确设置为GET请求
            CURLOPT_HTTPHEADER => $headers,
            
            // SSL设置 - 禁用验证（仅测试环境）
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false,
            
            // 其他设置
            CURLOPT_TIMEOUT => 300,
            CURLOPT_FOLLOWLOCATION => true,
        ]);
        
        // 执行请求
        $response = curl_exec($ch);
        
        // 检查错误
        $error_msg = "";
        if (curl_errno($ch)) {
            $error_msg = $ch;
        }
        
        // 获取HTTP状态码
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        
        return [
            'httpCode'=>$httpCode,
            'response'=>$response,
            'errorMsg'=>$error_msg
        ];
       
    }

    private function reqPost($url,$headers,$data){
        // 初始化cURL
        $ch = curl_init();

        // 设置cURL选项
        curl_setopt_array($ch, [
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POST => true,
            CURLOPT_HTTPHEADER => $headers,
            CURLOPT_POSTFIELDS => json_encode($data),
            CURLOPT_SSL_VERIFYPEER => false, // 根据实际情况调整，生产环境建议设为true
            CURLOPT_TIMEOUT => 300,
        ]);

        // 执行请求
        $response = curl_exec($ch);

        // 检查错误
        $error_msg = "";
        if (curl_errno($ch)) {
            $error_msg = curl_error($ch);
        }

        // 获取HTTP状态码
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

        // 关闭cURL资源
        curl_close($ch);

        return [
            'httpCode'=>$httpCode,
            'response'=>$response,
            'errorMsg'=>$error_msg
        ];
    }

    public function downloadLabel($package_id,$shop,$info){
        $url = 'https://open-api.tiktokglobalshop.com';
		$link = '/fulfillment/202309/packages/'.$package_id.'/shipping_documents';
		$time = time();
		$link .= '?shop_cipher='.$shop['shop_cipher'].'&app_key='.$shop['app_key'].'&timestamp='.$time."&document_type=SHIPPING_LABEL";
        $url = $url.$link;
        $headers = array('Content-Type: application/json','x-tts-access-token:'.$shop['token']);
		$sign = $this->sign($url,$headers,[],$shop['app_key']);
		$url .= $link.'&sign='.$sign;
		$res = $this->reqGet($url,$headers);
        if($res['httpCode'] != 200){
            echo "<pre>";
            print_r($res);
        }else{
            echo "<pre>";
            print_r($res);
        }
		 
    }
   
}