let fs = require("fs")
let config = require("./config.json")
let http = require('https');
let archiver = require('archiver')

var download = function(url, dest, cb) {
	var file = fs.createWriteStream(dest);
	http.get(url, function(response) {
		response.pipe(file);
		file.on('finish', function() {
			file.close(cb);
		});
	});
}

async function downloadAsync(url, path) {
	let p = new Promise((resolve, reject) => {
		download(url, path, resolve)
	});
	await p
}

function reformatJsonFile(path) {
	fs.writeFileSync(path, JSON.stringify(JSON.parse(fs.readFileSync(path)), 0, 4))
}

async function downloadAll() {
	await downloadAsync(`https://launchermeta.mojang.com/mc/game/version_manifest.json`, `./data/versions.json`)
	const versions = require("./data/versions.json")
	reformatJsonFile("./data/versions.json")
	const version = versions.versions.find((item) => { return item.id == config.version})
	let path = `./data/${config.version}.json`
	await downloadAsync(version.url, path)
	reformatJsonFile(path)
	let game = JSON.parse(fs.readFileSync(path))
	await downloadAsync(game.downloads.client.url,  `./data/${config.version}.jar`)
	await downloadAsync(game.downloads.client_mappings.url, `./data/${config.version}.txt`)
	const output = fs.createWriteStream(`./data/${config.version}-Dummy.jar`)
	const archive = archiver('zip', {
	  zlib: { level: 9 } 
	})
	archive.finalize()
}

downloadAll()