#! /usr/bin/env node
'use-strict'

const process = require('process');
const fs = require('fs');
let t = {};
t.wFT = true;

try {
    const f	= (dir, len) => {
        const items = fs.readdirSync(dir, t);
        for (let i = 0; i < items.length; i++) {
            let cur = items[i];
            if (cur[0] !== '.') {
                let now = cur;
                cur = dir + '/' + now;
                if (fs.lstatSync(cur).isDirectory()) {
                    console.log(len + now);
                    numdir++;
                    f(cur, len + '  ');
                }
                else {
                    console.log(len + now);
                    numfil++;
                }
            }
        }
    }
    const g	= (dir, len) => {
        const items = fs.readdirSync(dir, t);
        for (let i = 0; i < items.length; i++) {
            let cur = items[i];
            if (cur[0] !== '.') {
                let now = cur;
                cur = dir + '/' + now;
                if (fs.lstatSync(cur).isDirectory()) {
                    console.log(len + now);
                    numdir++;
                    g(cur, len + '  ');
                }
            }
        }
    }
    const h	= (dir, len) => {
        const items = fs.readdirSync(dir, t);
        for (let i = 0; i < items.length; i++) {
            let cur = items[i];
            if (cur[0] !== '.') {
                let now = cur;
                cur = dir + '/' + now;
                if (fs.lstatSync(cur).isDirectory()) {
                    fs.appendFileSync('out.txt', len + now + '\n');
                    numdir++;
                    h(cur, len + '  ');
                }
                else {
                    fs.appendFileSync('out.txt', len + now + '\n');
                    numfil++;
                }
            }
        }
    }
    let arg = process.argv[1];
    arg = arg.slice(0, arg.length - 5);
    numdir = 0;
    numfil = 0;
    if (process.argv.length === 2) {
        f(arg,  '');
        console.log('Number of directories: ' + numdir);
        console.log('Number of files: ' + numfil);
    }
    if (process.argv.length === 3) {
        g(arg, '');
        console.log('Number of directories: ' + numdir);
    }
    if (process.argv.length === 4) {
        h(arg, '');
        fs.appendFileSync('out.txt', 'Number of directories: ' + numdir + '\n');
        fs.appendFileSync('out.txt', 'Number of files: ' + numfil + '\n');
    }
} catch (e) {
    console.error(e.message);
}