samuele-cozzi/obsidian-marp-slides

import { App } from 'obsidian';
import { FilePath } from './filePath';
import { MarpSlidesSettings } from './settings';
import { existsSync, outputFileSync } from 'fs-extra';
import request from 'request';
import JSZip from 'jszip';

export class Libs {

    private settings : MarpSlidesSettings;

    constructor(settings: MarpSlidesSettings) {
        this.settings = settings;
    }
 
    loadLibs(app: App){
        const libPathUtility = new FilePath(this.settings);
        const libPath = libPathUtility.getLibDirectory(app.vault);

        if (!existsSync(libPath)) {
            //Download binary
            const downloadUrl = `https://github.com/samuele-cozzi/obsidian-marp-slides/releases/download/lib-v3/lib.zip`;

            const bufs: Uint8Array[] = [];
            
            let buf: Uint8Array;
            request
                .get(downloadUrl)
                .on('end', () => {
                    console.log(bufs);
                    buf = Buffer.concat(bufs);
                    const zip : JSZip = new JSZip();
                    zip
                        .loadAsync(buf)
                        .then(contents => {
                            Object.keys(contents.files).forEach(function (filename) {
                                if (!contents.files[filename].dir) {
                                    const file = zip.file(filename);
                                    if (file != null){
                                        file.async('nodebuffer')
                                        .then(function (content) {
                                            const dest = `${libPathUtility.getLibDirectory(app.vault)}${filename}`;
                                            outputFileSync(dest, content);
                                        });
                                    }
                                }
                            });
                        })
                        .catch(error => {
                            console.log(error);
                        });
                })
                .on('error', error => {
                    console.log(error);
                })
                .on('data', (d : Buffer) => {
                    bufs.push(new Uint8Array(d.buffer));
                });
        }
    }
}