Cakefile

fs = require 'fs'
path = require 'path'
{spawn, exec} = require 'child_process'
util = require 'util'

# Use executables installed with npm bundle.
process.env["PATH"] = "node_modules/.bin:#{process.env["PATH"]}"

srcDir = "src"
prodDir = "lib"
testDir = "spec"

# ANSI Terminal Colors.
bold  = "\x1B[0;1m"
red   = "\x1B[0;31m"
green = "\x1B[0;32m"
reset = "\x1B[0m"

# Log a message with a color.
log = (message, color, explanation) ->
  console.log color + message + reset + ' ' + (explanation or '')

# Handle error and kill the process.
onError = (err) ->
  if err
    process.stdout.write "#{red}#{err.stack}#{reset}\n"
    process.exit -1

task 'clean', 'Remove temporary files', ->
  log 'Executing clean', green
  exec 'rm -rf lib reports logs/*.log', onError

task 'build', 'Compile CoffeeScript into Javascript', ->
  exec "coffee -o #{prodDir} -c #{srcDir}", (err, stdout, stderror) ->
    onError err

runTests = (dir) ->
  exec "node_modules/.bin/mocha
          --compilers coffee:coffee-script
          --reporter spec
          --colors", (err, stdout, stderr) ->
    console.log stdout if stdout
    console.error stderr if stderr
    process.stdout.on 'drain', ->
      process.exit -1 if err

runOnChange = (task_to_invoke) ->
  exec "find #{srcDir} #{testDir}", (err, stdout, stderr) ->
    files = stdout.split '\n'
    files = files[0..files.length - 2]
    files.forEach (file) ->
      fs.stat file, (err, stats) ->
        if stats.isFile()
          fs.watch file, (event, filename) ->
            invoke task_to_invoke

task 'test', 'Run all tests', ->
  invoke 'build'
  runTests "#{testDir}/"

task 'test:unit', 'Run unit tests', ->
  invoke 'build'
  runTests "#{testDir}/unit/"

task 'test:integration', 'Run unit tests', ->
  invoke 'build'
  runTests "#{testDir}/integration/"

task '~test:unit', 'Rebuild and rerun tests on changes to src', ->
  runOnChange 'test:unit'

task '~test:integration', 'Rebuild and rerun tests on changes to src', ->
  runOnChange 'test:integration'

task '~test', 'Rebuild and rerun tests on changes to src', ->
  runOnChange 'test'