<?php
declare(strict_types=1);

namespace tdengine;

/**
 * @method httpRequest
 */
class TdUtils
{

    // public static $curlHandler = null;

    /**
     * [http 调用接口函数]
     * @param  string       $url     [接口地址]
     * @param  array        $params  [数组]
     * @param  string       $method  [GET\POST\DELETE\PUT]
     * @param  array        $header  [HTTP头信息]
     * @param  integer      $timeout [超时时间] 秒
     * @return json_decode {"status":"error", "desc":"http url parse error"}  or {"status":"succ","head":["affected_rows"],"data":[[2]],"rows":2}
     */
    public static function httpRequest($url, $params, $method = 'GET', $header = array(), $timeout = 2)
    {
        $curlHandler = curl_init();
        if (empty($curlHandler)) {
            $errJson['desc'] = "curl_init error";
            return $errJson;
        }
        // POST 提交方式的传入 $set_params 必须是字符串形式
        $opts = array(
            CURLOPT_TIMEOUT => $timeout,
            CURLOPT_RETURNTRANSFER => 1,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false,
            CURLOPT_HTTPHEADER => $header
        );

        $errJson['status'] = 'error';
        /* 根据请求类型设置特定参数 */
        switch (strtoupper($method)) {
            case 'GET':
                $opts[CURLOPT_URL] = $url . '?' . http_build_query($params);
                break;
            case 'POST':
                //$params = http_build_query($params);
                $opts[CURLOPT_URL] = $url;
                $opts[CURLOPT_POST] = 1;
                $opts[CURLOPT_POSTFIELDS] = $params;
                break;
            case 'DELETE':
                $opts[CURLOPT_URL] = $url;
                $opts[CURLOPT_HTTPHEADER] = array("X-HTTP-Method-Override: DELETE");
                $opts[CURLOPT_CUSTOMREQUEST] = 'DELETE';
                $opts[CURLOPT_POSTFIELDS] = $params;
                break;
            case 'PUT':
                $opts[CURLOPT_URL] = $url;
                $opts[CURLOPT_POST] = 0;
                $opts[CURLOPT_CUSTOMREQUEST] = 'PUT';
                $opts[CURLOPT_POSTFIELDS] = $params;
                break;
            default:
                $errJson['desc'] = '不支持的请求方式';
                return $errJson;
        }
        if (empty(curl_setopt_array($curlHandler, $opts))) {
            $errJson['desc'] = "curl_setopt_array error";
            return $errJson;
        }

        $data = curl_exec($curlHandler);
        
        if (empty($data)) {
            $errJson['desc'] = curl_error($curlHandler);
            return $errJson;
        }
        // curl_close($curlHandler);
        // $curlHandler = null
        $res = json_decode($data, true);
        if (empty($res)) {
            $errJson['desc'] = "tdHttp request failed json_decode,val:{$data}";
            return $errJson;
        }
        return $res;
    }


}