gulpfile.coffee

gulp = require 'gulp'
gutil = require 'gulp-util'

browserSync = require 'browser-sync'
browserify = require 'gulp-browserify'
sass = require 'gulp-sass'
rename = require 'gulp-rename'
coffeelint = require 'gulp-coffeelint'
coffee = require 'gulp-coffee'
autoprefixer = require 'gulp-autoprefixer'
concat = require 'gulp-concat'
uglify = require 'gulp-uglify'
rimraf = require 'gulp-rimraf'
runSequence = require 'run-sequence'

# CONFIG ---------------------------------------------------------

isProd = gutil.env.type is 'prod'

sources =
  html: 'app/**/*.html'
  sass: 'app/styles/styles.scss'
  coffee: 'app/scripts/*.coffee'
  assets: 'app/assets/**/*'
  libjs: 'app/scripts/lib/*.js'
  libcss: 'app/styles/lib/*.css'
  data: 'app/data/**/*'

destinations =
  css: 'dist/'
  html: 'dist/'
  js: 'dist/'
  assets: 'dist/assets'
  libjs: 'dist/lib/'
  libcss: 'dist/lib'
  data: 'dist/data/'

# TASKS -------------------------------------------------------------

gulp.task('browser-sync', ->
  browserSync(
    server:
      baseDir: 'dist/'
  )
)

# Compile and concatenate scripts
gulp.task('coffee', ->
  gulp.src('app/scripts/main.coffee', read: false)  
    .pipe(browserify(
      transform: ['coffeeify']
      extensions: ['.coffee']
      insertGlobals: true,
      debug: !isProd
      ))
    .pipe(rename('app.js'))
    .pipe(gulp.dest(destinations.js))
    .pipe(browserSync.reload(stream: true))
)

# Compile stylesheets
gulp.task('sass', ->
  gulp.src(sources.sass)
    .pipe(sass(onError: (e) -> console.log(e)))
    .pipe(autoprefixer('last 2 versions', '> 1%', 'ie 8'))
    .pipe(gulp.dest(destinations.css))
    .pipe(browserSync.reload(stream: true))
)

# Lint coffeescript
# TODO Fix this
gulp.task('lint', ->
  gulp.src(sources.coffee)
  .pipe(coffeelint())
  .pipe(coffeelint.reporter())
)

gulp.task('data', ->
  gulp.src(sources.data).pipe(gulp.dest(destinations.data))
)

gulp.task('html', ->
  gulp.src(sources.html).pipe(gulp.dest(destinations.html))
)

gulp.task('assets', ->
  gulp.src(sources.assets).pipe(gulp.dest(destinations.assets))
)

gulp.task('libjs', ->
  gulp.src(sources.libjs).pipe(gulp.dest(destinations.libjs))
)

gulp.task('libcss', ->
  gulp.src(sources.libcss).pipe(gulp.dest(destinations.libcss))
)

# Watched tasks
gulp.task('watch', ->
  gulp.watch sources.data, ['data']
  gulp.watch 'app/styles/*.scss', ['sass']
  gulp.watch sources.assets, ['assets']
  gulp.watch sources.html, ['html']
  gulp.watch sources.coffee, ['coffee', 'lint']
  gulp.watch sources.libjs, ['libjs']
 )

# Remove /dist directory
gulp.task('clean', ->
  gulp.src(['dist/'], read: false)
  .pipe(rimraf(force: true))
)

# Build sequence
gulp.task('build', ->
  runSequence('clean', ['coffee', 'sass', 'data', 'html', 'libjs', 'assets'])
)

gulp.task('default', [
  'browser-sync'
  'build'
  'watch'
])