#!/usr/bin/env node

// Get arguments
const [,, ...args] = process.argv

import e from './lib/eltro.mjs'
import { CLI, printError } from './lib/cli.mjs'

function PrintHelp() {
  console.log('')
  console.log('Usage: eltro <options> <files>')
  console.log('')
  console.log('where <files> can either be a single file or a simple glob pattern.')
  console.log('where <options> can be any of the following:')
  console.log('  -r, --reporter - Specify the reporter to use.')
  console.log('      Supported reporters: list, dot')
  console.log('  -t, --timeout - Specify the timeout for tests in ms.')
  console.log('      Default value is 2000ms')
  console.log('  -w, --watch - specify which group of files to watch from package.json')
  console.log('      ')
  console.log('  --ignore-only - Specify to ignore any .only() tests found')
  console.log('')
  console.log('eltro test/mytest.mjs')
  console.log('eltro dot test/*.mjs')
  console.log('eltro -r dot test/**/*.test.mjs')
  console.log('')
  process.exit(1)
}

function showErrorAndExit(message = '', err = null, code = 1) {
  console.log('')

  if (message) {
    console.error(`\x1b[31m${message}\x1b[0m`)
  }

  if (err) {
    printError(err)
  } else {
    PrintHelp()
  }
  process.exit(code)
}

const cli = new CLI(e)
cli.parseOptions(args)
.catch(function(err) { showErrorAndExit(err.message) })
.then(function() {
  return cli.startWatcher()
})
.catch(function(err) { showErrorAndExit('Unknown error while starting watcher', err) })
.then(function() {
  return cli.getFiles()
})
.catch(function(err) { showErrorAndExit('Unknown error while processing arguments', err) })
.then(function() {
  if (!cli.files.length && cli.run === 'test') {
    showErrorAndExit('No files were found with pattern', cli.targets.join(','))
  }

  return cli.loadFiles()
})
.catch(function(err) { showErrorAndExit('', err) })
.then(function() {
  return cli.beginRun()
})
.catch(function(err) { showErrorAndExit('Unknown error occured while running the tests', err) })
.then(function(stats) {
  if (stats.failed > 0) {
    process.exit(10)
  }
  process.exit(0)
})