#!/usr/bin/env node

var RSG = require('../lib/rsg')
var argv = require('minimist')(process.argv.slice(2))

var GRAY_COLOR = '\u001b[90m'
var MAGENTA_COLOR = '\u001b[35m'
var RESET_COLOR = '\u001b[0m'

!(function () {
  if (!argv._[0] || argv.h || argv.help) {
    return require('fs').createReadStream(require('path').resolve(__dirname, 'usage.txt'))
      .pipe(process.stdout)
      .on('close', function () { process.exit(1) })
  }

  if (argv.V || argv.version) {
    return console.log(require('../package.json').version)
  }

  var opts = {
    output: argv.o || argv.output,
    title: argv.t || argv.title,
    root: argv.r || argv.root,
    pushstate: argv.p || argv.pushstate,
    files: argv.f || argv.files,
    config: argv.c || argv.config
  }

  // removing falsy fields from an opts
  Object.keys(opts).forEach(function (name) {
    if (!opts[name]) {
      delete opts[name]
    }
  })

  // convert files to array
  // 'a.js, b.js' -> ['a.js', 'b.js']
  if (opts.files) {
    opts.files = opts.files.split(',').map(function (part) { return part.trim() })
  }

  RSG(argv._[0], opts).generate(function (err) {
    if (err) {
      console.error(String(err))
      process.exit(1)
    }

    if (argv.v || argv.verbose) {
      var time = '[' + GRAY_COLOR + new Date().toLocaleTimeString() + RESET_COLOR + ']'
      console.log(time, MAGENTA_COLOR + this.opts.output)
    }

    process.exit(0)
  })
})()