fs = require 'fs'
{exec} = require 'child_process'

# All coffeescript files required.
FILES = [
  'shims.coffee'
  'util.coffee'
  'proxypair.coffee'
  'websocket.coffee'
  'snowflake.coffee'
]
OUTFILE = 'build/snowflake.coffee'
STATIC = 'static'

concatCoffeeFiles = -> exec 'cat ' + FILES.join(' ') + ' | cat > ' + OUTFILE

copyStaticFiles = -> exec 'cp ' + STATIC + '/* build/'

compileCoffee = ->
  exec 'coffee -o build -c build/snowflake.coffee', (err, stdout, stderr) ->
    throw err if err

task 'test', 'snowflake unit tests', ->
  exec 'mkdir -p test'
  testFile = 'test/snowflake.bundle.coffee'
  exec 'cat ' + FILES.join(' ') + ' snowflake_test.coffee | cat > ' + testFile
  exec 'coffee ' + testFile + ' -v', (err, stdout, stderr) ->
    throw err if err
    console.log stdout + stderr

task 'build', 'build the snowflake proxy', ->
  exec 'mkdir -p build'
  concatCoffeeFiles()
  copyStaticFiles()
  compileCoffee()
  console.log 'Snowflake prepared.'

task 'clean', 'remove all built files', ->
  exec 'rm -r build'
  exec 'rm -r test'