<?php

namespace service;

/**
 * HTTP请求服务
 * Class HttpService
 * @package service
 * @author Anyon <zoujingli@qq.com>
 * @date 2017/03/22 15:32
 */
class HttpService
{

    /**
     * HTTP GET 请求
     * @param string $url 请求的URL地址
     * @param array $data GET参数
     * @param int $second 设置超时时间（默认30秒）
     * @param array $header 请求Header信息
     * @return bool|string
     */
    public static function get($url, $data = array(), $second = 30, $header = [])
    {
        return self::curl_request($url, $data, 'GET', $second, $header);
    }

    /**
     * POST 请求（支持文件上传）
     * @param string $url HTTP请求URL地址
     * @param array|string $data POST提交的数据
     * @param int $second 请求超时时间
     * @param array $header 请求Header信息
     * @return bool|string
     */
    public static function post($url, $data = [], $second = 30, $header = [])
    {
        return self::curl_request($url, $data, 'POST', $second, $header);
    }

    /**
     * POST 请求（支持文件上传）
     * @param string $url HTTP请求URL地址
     * @param array|string $data POST提交的数据
     * @param int $second 请求超时时间
     * @param array $header 请求Header信息
     * @return bool|string
     */
    public static function delete($url, $data = [], $second = 30, $header = [])
    {
        return self::curl_request($url, $data, 'DELETE', $second, $header);
    }

    /**
     * put 请求（支持文件上传）
     * @param string $url HTTP请求URL地址
     * @param array|string $data POST提交的数据
     * @param int $second 请求超时时间
     * @param array $header 请求Header信息
     * @return bool|string
     */
    public static function put($url, $data = [], $second = 30, $header = [])
    {
        return self::curl_request($url, $data, 'PUT', $second, $header);
    }

    private static function curl_request($url, $data = array(), $method = 'GET', $second = 30, $header = [])
    {
        if (!empty($data) && $method == 'GET') {
            $url .= (stripos($url, '?') === false ? '?' : '&');
            $url .= (is_array($data) ? http_build_query($data) : $data);
        }
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_TIMEOUT, $second);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLINFO_HEADER_OUT, TRUE);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $method);
        self::_setSsl($curl, $url);
        if (!empty($data)) {
            curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));
        }
        !empty($header) && curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
        $content = curl_exec($curl);
        $status = curl_getinfo($curl);
        curl_close($curl);
        //return (intval($status["http_code"]) === 200) ? json_decode($content,true) : false;
        $result = json_decode($content, true);
        return json_last_error() == JSON_ERROR_NONE ? $result : $content;

    }

    /**
     * 设置SSL参数
     * @param $curl
     * @param string $url
     */
    private static function _setSsl(&$curl, $url)
    {
        if (stripos($url, "https") === 0) {
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($curl, CURLOPT_SSLVERSION, 1);
        }
    }
}