<?php
/**
 * Http.php UTF-8
 * 基于CURL的Http请求类
 *
 * @date    : 2018/4/25 12:18
 *
 * @license 这不是一个自由软件，未经授权不许任何使用和传播。
 * @author  : wuyonghong <wyh@huosdk.com>
 * @version : HUOSDK 8.0
 */

namespace huolib\tool;

use think\Exception;

class Http {
    private static function init($params = null) {
        if (function_exists('curl_init')) {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_HEADER, false);
            curl_setopt($ch, CURLOPT_TIMEOUT, 30);
            if (null !== $params) {
                self::setParams($ch, $params);
            }
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

            return $ch;
        } else {
            throw E('服务器不支持CURL');
        }
    }

    private static function setParams($ch, $params) {
        if (array_key_exists('header', $params)) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $params['header']);
        }
        curl_setopt($ch, CURLOPT_TIMEOUT, array_key_exists('timeout', $params) ? $params['timeout'] : 30);
    }

    /**
     * @param $ch
     *
     * @return mixed
     * @throws Exception
     */
    private static function exec($ch) {
        $rsp = curl_exec($ch);
        if ($rsp !== false) {
            curl_close($ch);

            return $rsp;
        } else {
            $errorCode = curl_errno($ch);
            $errorMsg = curl_error($ch);
            curl_close($ch);
            throw new Exception("curl出错，$errorMsg", $errorCode);
        }
    }

    public static function request($url, $data = null, $method = 'get', $params = null) {
        $method = strtolower($method);

        return self::$method($url, $data, $params);
    }

    public static function get($url, $data = null, $params = null) {
        $ch = self::init($params);
        $url = rtrim($url, '?');
        if (!is_null($data)) {
            $url .= '?'.http_build_query($data);
        }
        curl_setopt($ch, CURLOPT_URL, $url);

        return self::exec($ch);
    }

    public static function post($url, $data = null, $params = null) {
        $ch = self::init($params);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        if (!is_null($data)) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
        }

        return self::exec($ch);
    }

    public static function postRaw($url, $raw, $params = null) {
        $ch = self::init($params);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $raw);

        return self::exec($ch);
    }

    /**
     * @param      $url
     * @param      $raw
     * @param null $params
     *
     * @return mixed
     * @throws Exception
     */
    public static function postRawSsl($url, $raw, $params = null) {
        $ch = self::init($params);
        if (!array_key_exists('cert_path', $params) || !array_key_exists('key_path', $params)
            || !array_key_exists(
                'ca_path', $params
            )) {
            throw new Exception('证书文件路径不能为空');
        }
        curl_setopt($ch, CURLOPT_SSLCERT, $params['cert_path']);
        curl_setopt($ch, CURLOPT_SSLKEY, $params['key_path']);
        curl_setopt($ch, CURLOPT_CAINFO, $params['ca_path']);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $raw);

        return self::exec($ch);
    }

    /**
     * @param      $url
     * @param      $path
     * @param null $filename
     * @param null $params
     *
     * @return bool|int
     * @throws Exception
     */
    public static function saveImage($url, $path, $filename = null, $params = null) {
        $ch = self::init($params);
        curl_setopt($ch, CURLOPT_URL, $url);
        $img = curl_exec($ch);
        if ($img !== false) {
            $file_info = curl_getinfo($ch);
            curl_close($ch);
        } else {
            $errorCode = curl_errno($ch);
            $errorMsg = curl_error($ch);
            curl_close($ch);
            throw new Exception("获取头像出错，$errorMsg", $errorCode);
        }
        $content_type = explode('/', $file_info['content_type']);
        if (strtolower($content_type[0]) != 'image') {
            throw new Exception('下载地址文件不是图片');
        }
        $file_path = '/'.trim($path, '/').'/';
        if (is_null($filename)) {
            $filename = md5($url);
        }
        $file_path .= $filename.'.'.end($content_type);

        return file_put_contents($file_path, $img);
    }


    public static function postJson($url, $data = [], $params = null) {
        $ch = self::init($params);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        if (!is_null($data)) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
        }

        return self::exec($ch);
    }

}