Gruntfile.coffee

module.exports = (grunt)->

  ###############################################################
  # Constants
  ###############################################################

  PROFILE = grunt.option('profile') || 'dev'

  SRC_DIR =                    'src'
  SRC_TEST_DIR =               "#{SRC_DIR}/test"
  SRC_PROFILES_DIR =           "#{SRC_DIR}/profiles"
  CURRENT_PROFILE_DIR =        "#{SRC_PROFILES_DIR}/#{PROFILE}"

  TARGET_DIR =                 'target'
  BUILD_DIR =                  "#{TARGET_DIR}/build"
  BUILD_MAIN_DIR =             "#{BUILD_DIR}/main"

  STAGE_DIR =                  "#{TARGET_DIR}/stage"
  STAGE_APP_DIR =              "#{STAGE_DIR}/app"
  STAGE_TEST_DIR =             "#{STAGE_DIR}/test"

  BUILD_TEST_DIR =             "#{BUILD_DIR}/test"

  # index.html is special, since it should be moved out of the index
  #   view and into the root
  SRC_INDEX_HTML =             "#{STAGE_APP_DIR}/index/index.html"
  DEST_INDEX_HTML =            "#{BUILD_MAIN_DIR}/index.html"

  ###############################################################
  # Config
  ###############################################################

  grunt.initConfig

    clean:
      main:
        src: TARGET_DIR

    copy:

    # Copy all non-profile to the stage dir.  Stage dir allows
    #   us to override
    # non-profile-specific code w/ the profile defined on the
    #   cmd line (or 'dev' by default)
      stage:
        files:[
          {
            expand:        true
            cwd:           "#{SRC_DIR}/main"
            src:           '**'
            dest:          STAGE_DIR
          }
        ]

    # override staging dir w/ profile-specific files
      profiles:
        files: [
          {
            expand:        true
            cwd:           CURRENT_PROFILE_DIR
            src:           '**'
            dest:          STAGE_DIR
          }
        ]

    # copies all files from staging to the build dir that
    #   do not need any further processing
      static:
        files: [
          {
            src:           SRC_INDEX_HTML
            dest:          DEST_INDEX_HTML
          }
          {
            expand:        true
            cwd:           STAGE_APP_DIR
            src:           [
              '**/*.{html,jpg,png,gif}', "!{SRC_INDEX_HTML}"
            ]
            dest:          BUILD_MAIN_DIR
          }
        ]

      test:
        files: [
          {
            expand:        true
            cwd:           SRC_TEST_DIR
            src:           ['{lib,config}/**']
            dest:          BUILD_TEST_DIR
          }
        ]

    concat:
      app_css:
        src: "#{STAGE_APP_DIR}/**/*.css"
        dest: "#{BUILD_MAIN_DIR}/style/app.css"
      lib_css:
        src: "#{STAGE_DIR}/lib/**/*.css"
        dest: "#{BUILD_MAIN_DIR}/style/lib.css"
      lib_js:
        src: "#{STAGE_DIR}/lib/**/*.js"
        dest: "#{BUILD_MAIN_DIR}/js/lib.js"

    coffee:
      app:
        src: "#{STAGE_APP_DIR}/**/*.coffee"
        dest: "#{BUILD_MAIN_DIR}/js/app.js"
      test:
        src: "#{SRC_TEST_DIR}/**/*.coffee"
        dest: "#{BUILD_TEST_DIR}/js/lib.js"

    coffeelint:
      app: ["#{STAGE_APP_DIR}/**/*.coffee"]
      tests:
        files: {
          src: ["#{SRC_TEST_DIR}/**/*.coffee"]
        }
        options:
          'no_trailing_whitespace':
            'level': 'error'

    uglify:
      lib_js:
        src: "#{BUILD_MAIN_DIR}/js/lib.js"
        dest: "#{BUILD_MAIN_DIR}/js/lib.js"
      app_js:
        src: "#{BUILD_MAIN_DIR}/js/app.js"
        dest: "#{BUILD_MAIN_DIR}/js/app.js"

    cssmin:
      lib_css:
        src: "#{BUILD_MAIN_DIR}/style/lib.css"
        dest: "#{BUILD_MAIN_DIR}/style/lib.css"
      app_css:
        src: "#{BUILD_MAIN_DIR}/style/app.css"
        dest: "#{BUILD_MAIN_DIR}/style/app.css"

    connect:
      server:
        options:
          base: BUILD_MAIN_DIR

    regarde:
      build:
        options:
          base: BUILD_MAIN_DIR
        files: ["#{SRC_DIR}/**/*.{css,coffee,js,html}"]
        tasks: ['build']
  # Note, disabling this until
  #   https://github.com/mklabs/tiny-lr/issues/8 is resolved
  #
  # livereload:
  #   files: ["#{BUILD_DIR}/**/*.{css,js,html}"]
  #   tasks: ['livereload']


  ##############################################################
  # Dependencies
  ###############################################################
  grunt.loadNpmTasks('grunt-contrib-coffee')
  grunt.loadNpmTasks('grunt-contrib-copy')
  grunt.loadNpmTasks('grunt-contrib-clean')
  grunt.loadNpmTasks('grunt-contrib-concat')
  grunt.loadNpmTasks('grunt-contrib-uglify')
  grunt.loadNpmTasks('grunt-contrib-cssmin')
  grunt.loadNpmTasks('grunt-contrib-connect')
  grunt.loadNpmTasks('grunt-contrib-livereload')
  grunt.loadNpmTasks('grunt-regarde')
  grunt.loadNpmTasks('grunt-coffeelint')

  ###############################################################
  # Alias tasks
  ###############################################################

  grunt.registerTask('build', ['copy','concat','coffeelint','coffee'])
  grunt.registerTask('watcher', ['livereload-start', 'connect', 'regarde'])
  grunt.registerTask('dist', ['build','uglify','cssmin'])

  grunt.registerTask('default', ['clean','build','watcher'])