<?php

namespace service;

use CURLFile;

/**
 * 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 = [], $second = 30, $header = [], $refer = '')
    {
        if (!empty($data)) {
            $url .= (stripos($url, '?') === false ? '?' : '&');
            $url .= (is_array($data) ? http_build_query($data) : $data);
        }
        $curl = curl_init();
        //设置 Refer
        if ($refer) {
            curl_setopt($curl, CURLOPT_REFERER, $refer); //防封域名
        }
        self::applyHttp($curl, $url);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_TIMEOUT, $second);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        if (!empty($header)) {
            curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
        }
        list($content, $status) = [curl_exec($curl), curl_getinfo($curl), curl_close($curl)];
        return (intval($status["http_code"]) === 200) ? $content : false;
    }

    /**
     * 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 $header 请求Header信息
     * @return bool|string
     */
    static public function post($url, $data = [], $second = 30, $header = [], $refer = '')
    {
        $curl = curl_init();
        //设置 Refer
        if ($refer) {
            curl_setopt($curl, CURLOPT_REFERER, $refer); //防封域名
        }
        self::applyData($data);
        self::applyHttp($curl, $url);
        curl_setopt($curl, CURLOPT_TIMEOUT, $second);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_HEADER, false);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_POST, true);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        if (!empty($header)) {
            curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
        }
        list($content, $status) = [curl_exec($curl), curl_getinfo($curl), curl_close($curl)];
        return (intval($status["http_code"]) === 200) ? $content : false;
    }

    /**
     * 设置SSL参数
     * @param $curl
     * @param string $url
     */
    private static function applyHttp(&$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);
        }
    }

    /**
     * Post 数据过滤处理
     * @param array $data
     * @param bool $isBuild
     * @return string
     */
    private static function applyData(&$data, $isBuild = true)
    {
        if (!is_array($data)) {
            return null;
        }
        foreach ($data as &$value) {
            is_array($value) && $isBuild = true;
            if (!(is_string($value) && strlen($value) > 0 && $value[0] === '@')) {
                continue;
            }
            if (!file_exists(($file = realpath(trim($value, '@'))))) {
                continue;
            }
            list($isBuild, $mime) = [false, FileService::getFileMine(pathinfo($file, 4))];
            if (class_exists('CURLFile', false)) {
                $value = new CURLFile($file, $mime);
            } else {
                $value = "{$value};type={$mime}";
            }
        }
        $isBuild && $data = http_build_query($data);
    }

}
