<?php

/**
 *  Website: https://mudew.com/
 *  Author: Lkeme
 *  License: The MIT License
 *  Email: Useri@live.cn
 *  Updated: 2021 ~ 2022
 *  Resource: https://github.com/XcantloadX
 */

namespace BiliHelper\Core;

class HttpClient
{
    private $ch;
    private $ret;
    private $form;
    private $headers;
    private $url;
    private $query;

    public function __construct(string $url)
    {
        $this->ch = curl_init();
        $this->url = $url;
        curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, false); //忽略 HTTPS 证书错误
        $this->setUA("Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36");
    }

    function __destruct()
    {
        //防止内存泄露
        curl_close($this->ch);
    }

    /**
     * @use 设置UA
     * @param string $ua
     * @return $this
     */
    public function setUA(string $ua): HttpClient
    {
        curl_setopt($this->ch, CURLOPT_USERAGENT, $ua); //设置 UA
        return $this;
    }

    /**
     * @use 添加Header
     * @param string $header
     * @return $this
     */
    public function addHeader(string $header): HttpClient
    {
        array_push($this->headers, $header);
        return $this;
    }

    /**
     * @use 添加Headers
     * @param array $headers
     * @return $this
     */
    public function addHeaders(array $headers): HttpClient
    {
        foreach ($headers as $key => $value) {
            array_push($this->headers, "{$key}: {$value}");
        }
        return $this;
    }

    /**
     * @use 设置Cookie
     * @param string $cookie
     * @return $this
     */
    public function setCookie(string $cookie): HttpClient
    {
        curl_setopt($this->ch, CURLOPT_COOKIE, $cookie);
        return $this;
    }

    /**
     * @use 设置 url 参数
     */
    public function buildQuery(array $query): HttpClient
    {
        $this->query = http_build_query($query);
        return $this;
    }

    /**
     * @use 自动将 json 文本解码
     */
    public function asJSON(): object
    {
        return json_decode($this->ret);
    }

    /**
     * @use 获取返回结果
     */
    public function asString(): string
    {
        return $this->ret;
    }

    /**
     * @use 构造POST表单
     * @param array $form
     * @return $this
     */
    public function buildPostForm(array $form): HttpClient
    {
        $this->form = http_build_query($form);

        return $this;
    }

    /**
     * @use 发送 Get 请求
     */
    public function get(): HttpClient
    {
        curl_setopt($this->ch, CURLOPT_URL, $this->url . "?" . $this->query);
        curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true); //返回内容储存到变量中
        curl_setopt($this->ch, CURLOPT_HEADER, $this->headers);
        $this->ret = curl_exec($this->ch);
        return $this;
    }

    /**
     * @use 发送 POST 请求
     * @param string|null $data 要 POST 的数据
     * @return \HttpClient
     */
    public function post(string $data = null): HttpClient
    {
        curl_setopt($this->ch, CURLOPT_URL, $this->url . "?" . $this->query);
        curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true); //返回内容储存到变量中
        curl_setopt($this->ch, CURLOPT_POST, true); // 发送 POST 请求
        curl_setopt($this->ch, CURLOPT_HEADER, $this->headers);
        curl_setopt($this->ch, CURLOPT_POSTFIELDS, $data);
        $this->ret = curl_exec($this->ch);
        return $this;
    }


    /**
     * @use POST表单
     * @param array $form
     * @return $this
     */
    public function postForm(array $form): HttpClient
    {
        return $this->post(http_build_query($form));
    }
}