import * as cheer from "cheerio";
import axios from "axios";
import { HttpsProxyAgent } from "https-proxy-agent";
import Config from "../config/config.js";

class utils {
    constructor() {
        this.ax = axios
        // 让 ajax 请求 走flclash的翻墙代理
        const httpsAgent = new HttpsProxyAgent(`http://127.0.0.1:${Config.proxyPort}`);
        this.ax.defaults.httpsAgent = httpsAgent;
        this.ax.defaults.proxy = false;

        this.ResponseInterceptor()
    }

    /**
     * 返回 cheerio 数据结构
     * @param html
     * @returns {*}
     */
    cheerio(html) {
        return cheer.load(html)
    }

    split(str, index = 1) {
        return str.split(Config.baseUrl)[index]
    }

    /**
     *
     * @param url 请求的地址
     * @returns {Promise<AxiosResponse<any>>}
     */
    async get(url) {
        return await this.ax.get(url, {
            headers: {
                'sec-ch-ua-mobile': '?1',
                'sec-fetch-site': 'same-origin',
                'upgrade-insecure-requests': '1',
                'priority': 'u=0, i',
                'sec-fetch-mode': 'navigate',
                'cookie': `_ga=GA1.1.1571194344.1732275775; _lscache_vary=0e8aace2958628a1edb01710bbabbcab; showed_system_notice=showed; PHPSESSID=5jmev023fsh6i76huat60njio3; _ga_ZT9Q6FCC5R=GS1.1.1732668048.9.1.1732668791.0.0.0`,
                'referer': 'https://www.06se.com/hot_tags',
                'user-agent': `Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1`
            }
        });
    }

    /**
     * 
     * 响应拦截器
     * @constructor
     */
    async ResponseInterceptor() {
        this.ax.interceptors.response.use((response) => {
            return this.cheerio(response.data);
        }, (error) => {
            console.log(`
    ❌ 请求错误❕❕❕            
    1: 错误信息 ${error.message}
    2: 原因：目标网站禁止国内大陆IP访问，爬虫会走系统代理进行请求访问
       但检测到你未开启翻墙工具，请打开Clash或FlClash等代理工具，保证能正常访问 Google。
       
    3: 自定义代理端口：修改代码'/config/config.js'中 proxyPort 实现自定义端口，端口从代理工具中查看
            `);
            return Promise.reject(error)
        })
    }
}

export default new utils();