import * as crypto from 'crypto'
const https = require('https');
const http = require('http'); 

export function md5Hexdigest(inputString: string) {
    // 创建一个MD5哈希对象
    const hash = crypto.createHash('md5');
    
    // 更新哈希对象，输入数据必须是字符串
    hash.update(inputString, 'utf8');
    
    // 计算哈希值并输出其十六进制表示
    const hexdigest = hash.digest('hex');
    
    return hexdigest;
}

export function getUrlAsBuffer(url) {
    return new Promise((resolve, reject) => {
        (url.startsWith('https')?https:http).get(url, (response) => {
            const chunks: any[] = [];

            response.on('data', (chunk) => {
                chunks.push(chunk);
            });

            response.on('end', () => {
                const buffer = Buffer.concat(chunks);
                resolve(buffer);
            });

            response.on('error', (err) => {
                reject(err);
            });
        });
    });
}