fs = require('fs')
path = require('path')
{spawn, exec} = require('child_process')
execSync = require('exec-sync')

runAsync = (command, options, next) ->
  if options? and options.length > 0
    command += ' ' + options.join(' ')
  exec(command, (error, stdout, stderr) ->
    if stderr.length > 0 and error?
      console.log("Stderr exec'ing command '#{command}'...\n" + stderr)
      console.log('exec error: ' + error)
    if next?
      next(stdout)
    else
      if stdout.length > 0 and stdout?
        console.log("Stdout exec'ing command '#{command}'...\n" + stdout)
  )

runSync = (command, options, next) ->
  if options? and options.length > 0
    command += ' ' + options.join(' ')

  {stdout, stderr} = execSync(command, true)
  if stderr.length > 0
    console.error("Error running `#{command}`\n" + stderr)
    process.exit(1)
  if next?
    next(stdout)
  else
    if stdout.length > 0
      console.log("Stdout exec'ing command '#{command}'...\n" + stdout)

task('doctest', 'Runs doctests found in documentation', () ->
  process.chdir(__dirname)
  fs.readdir('./', (err, contents) ->
    files = ("#{file}" for file in contents when (file.indexOf('.coffee') > 0))
    runSync('node_modules/coffeedoctest/bin/coffeedoctest', ['--readme'].concat(files))
  )
)

#task('publish', 'Publish to npm', () ->
#  process.chdir(__dirname)
#  runSync('npm publish .')
#)

task('publish', 'Publish to npm', () ->
  process.chdir(__dirname)
  runSync('cake test')  # Doing this exernally to make it synchrous
  runSync('git status --porcelain', [], (stdout) ->
    if stdout.length == 0
      {stdout, stderr} = execSync('git rev-parse origin/master', true)
      stdoutOrigin = stdout
      {stdout, stderr} = execSync('git rev-parse master', true)
      stdoutMaster = stdout
      if stdoutOrigin == stdoutMaster
        console.log('running npm publish')
        {stdout, stderr} = execSync('npm publish .', true)
        if fs.existsSync('npm-debug.log')
          console.error('`npm publish` failed. See npm-debug.log for details.')
        else
          console.log('running git tag')
          runSync("git tag v#{require('./package.json').version}")
          runAsync("git push --tags")
      else
        console.error('Origin and master out of sync. Not publishing.')
    else
      console.error('`git status --porcelain` was not clean. Not publishing.')
  )
)

task('test', 'Run the CoffeeScript test suite with nodeunit', () ->
  {reporters} = require('nodeunit')
  process.chdir(__dirname)
  reporters.default.run(['test'], undefined, (failure) -> 
    if failure?
      console.log(failure)
      process.exit(1)
  )
)

task('testall', 'Runs both tests and doctests', () ->
  invoke('test')
  invoke('doctest')
)