@cloudroom/load-static/index.js

download

const download = require('download');
const fs = require('fs');
const compressing = require('compressing');
const path = require('path')
const cwd = path.resolve(__dirname)

const downloadStatic = async (url, config = {}) => {
    console.log('download url:', url);
    let metadata = {};
    const { filename, dir = cwd, needCompress = false } = config;
    try {
        metadata = require('./cache/metadata.json');
    } catch (err) {
    }

    if (!metadata[url]) {
        const str = Math.random().toString(36).slice(2);
        await download(url, path.resolve(__dirname, 'cache'), {
            filename: str,
        })

        metadata[url] = {
            filename: str
        }

        fs.writeFileSync(path.resolve(__dirname, './cache/metadata.json'), JSON.stringify(metadata));
    }

    if (needCompress) {
        try {
            fs.rmSync(dir, { recursive: true });
        } catch (error) {

        }

        await compressing.zip.uncompress(path.resolve(__dirname, './cache/' + metadata[url].filename), dir)
    } else {
        // 递归创建目录  
        function ensureDirExists(dirPath) {
            if (!fs.existsSync(dirPath)) {
                const parentDir = path.dirname(dirPath);
                if (parentDir !== '.' && parentDir !== '/' && !fs.existsSync(parentDir)) {
                    ensureDirExists(parentDir); // 递归调用以确保父目录存在  
                }
                fs.mkdirSync(dirPath);
            }
        }

        // 确保目录存在  
        ensureDirExists(dir);
        fs.copyFileSync('./cache/' + metadata[url].filename, dir + filename);
    }
}

/* downloadStatic(
    `http://127.0.0.1:8080/x86_64.zip`,
    {
        filename: '123.zip',
        dir: './unzip/',
        needCompress: true
    }
) */

module.exports = downloadStatic;