const { pathExists, copy, readJSON } = require('fs-extra');
const { join } = require('path');
const { Client } = require('ssh2');

var configPath = join(__filename, '..', 'config.json');
var defaultConfigPath = join(__filename, '..', 'defaultConfig.json');

var config: Config = null;

pathExists(configPath, (exists, err) => {
	if (err) throw err;
	if (exists) {
		readJSON(config, (configJson, err) => {
			if (err) throw err;
			config = configJson;

			startPrepare();
		});
	} else
		copy(defaultConfigPath, configPath, (err) => {
			if (err) throw err;
			console.log(`----- Default config has been copied -----`);
		});
});

function startPrepare() {
	console.log(`----- STARTING PREPARE ON ${config.addresses.length} DEVICES -----`);
	(function handle(i = 0) {
		if (config.addresses[i]) {
			var address = config.addresses[i];

			console.log(`Starting on device ${address}`);

			var ip = address.split(':')[0];
			var port = address.split(':')[1] != undefined ? address.split(':')[1] : 22;

			const conn = new Client();
			conn
				.on('ready', () => {
					console.log('   Client :: ready');
					conn.shell((err, stream) => {
						if (err) throw err;
						stream
							.on('close', () => {
								console.log('   Stream :: close');
								conn.end();
								console.log(`Finished device ${address}`);
								handle(i + 1);
							})
							.on('data', (data) => {
								console.log('   Output: ' + data);
							});
						stream.end(`${config.payload.join('\n')}\nexit\n`);
					});
				})
				.connect({
					host: ip,
					port: port,
					username: config.username,
					password: config.password
				});
		} else console.log('----- FINISHED ALL DEVICES -----');
	})();
}

interface Config {
	addresses: string[];
	username: string;
	password: string;
	payload: string[];
}