watchify    = require('watchify')
browserify  = require('browserify')
browserSync = require('browser-sync')
gulp        = require('gulp')
source      = require('vinyl-source-stream')
gutil       = require('gulp-util')
coffeify    = require('coffeeify')
coffee      = require("gulp-coffee")
sass        = require('gulp-sass')
uglify      = require('gulp-uglify')
buffer      = require('vinyl-buffer')
zip         = require('gulp-zip')
_           = require('lodash')
concat      = require('gulp-concat')

reload = browserSync.reload

html = (target) ->
  return () ->
    return gulp.src(['html/index.html','html/en.html'])
          .pipe(gulp.dest(target));

img = (target) ->
  return () ->
    return gulp.src(['img/*.png', 'img/*.jpeg', 'img/*.jpg'])
          .pipe(gulp.dest(target));

audio = (target) ->
  return () ->
    return gulp.src(['audio/*.mp3'])
          .pipe(gulp.dest(target));

gulp.task('html', html('./build'))
gulp.task('img', img('./build/img'))
gulp.task('audio', audio('./build/audio'))

gulp.task('sass', () ->
  gulp.src('sass/main.scss')
    .pipe(sass({outputStyle: 'compressed'}).on('error', sass.logError))
    .pipe(gulp.dest('./build/css'));
)

sources = [
  './game/begin.coffee',
  './game/story.coffee',
  './game/init.coffee',
]

opts = _.assign({}, watchify.args, {
  entries: ["./build/game/main.coffee"]
  debug: true
  transform: [coffeify]
});
bundler = watchify(browserify(opts));

bundle = () ->
  return bundler.bundle()
    .on('error', gutil.log.bind(gutil, 'Browserify Error'))
    .pipe(source('bundle.js'))
    .pipe(gulp.dest('./build/game'));

gulp.task('concatCoffee', () ->
  return gulp.src(sources)
    .pipe(concat('./main.coffee'))
    .pipe(gulp.dest('./build/game'));
);

gulp.task('coffee', ['concatCoffee'], bundle);

bundler.on('update', bundle);
bundler.on('log', gutil.log);

gulp.task('build', ['html', 'img', 'sass', 'coffee', 'audio'])

gulp.task('serve', ['build'], () ->
  browserSync({
    server: {
      baseDir: 'build'
    }
  });

  sassListener = () ->
    reload('./build/css/main.css');

  gulp.watch(['./html/*.html'], ['html']);
  gulp.watch(['./sass/*.scss'], ['sass']);
  gulp.watch(['./img/*.png', './img/*.jpeg', './img/*.jpg'], ['img']);
  gulp.watch(['./game/*.coffee'], ['coffee']);

  gulp.watch(['./build/css/main.css'], sassListener);
  gulp.watch(
    ['./build/game/bundle.js', './build/img/*', './build/index.html'],
    browserSync.reload);
)

gulp.task('html-dist', html('./dist'));
gulp.task('img-dist', img('./dist/img'));
gulp.task('audio-dist', audio('./dist/audio'));
gulp.task('legal-dist', () ->
  return gulp.src(['LICENSE.txt'])
         .pipe(gulp.dest("./dist"));
);

gulp.task('sass-dist', () ->
  return gulp.src('./sass/main.scss')
        .pipe(sass({outputStyle: 'compressed'}))
        .pipe(gulp.dest('./dist/css'));
);

distBundler = browserify({
  debug: false,
  entries: ['./build/game/main.coffee'],
  transform: ['coffeeify']
});

gulp.task('coffee-dist', ['concatCoffee'], () ->
  return distBundler.bundle()
        .pipe(source('bundle.js'))
        .pipe(buffer())
        .pipe(uglify())
        .on('error', gutil.log)
        .pipe(gulp.dest('./dist/game'));
);

gulp.task('dist', ['html-dist', 'img-dist', 'sass-dist', 'coffee-dist', 'audio-dist', 'legal-dist']);

gulp.task('zip', ['dist'], () ->
  return gulp.src('dist/**')
    .pipe(zip('dist.zip'))
    .pipe(gulp.dest('.'));
);