browserSync = require('browser-sync')
gulp        = require('gulp')
gutil       = require('gulp-util')
coffee      = require("gulp-coffee")
sass        = require('gulp-sass')
minify      = require('gulp-minify')
zip         = require('gulp-zip')
concat      = require('gulp-concat')
rename      = require('gulp-rename')
rm          = require( 'gulp-rm' )
source      = require('vinyl-source-stream')
fs = require 'fs'
path = require 'path'
cson = require 'cson'
glob = require('glob-fs')({
  builtins: false
})
mkdirp = require 'mkdirp'

reload = browserSync.reload

gulp.task('bundle-dist', () ->
  return gulp.src("./build/game/main.coffee")
    .pipe(coffee({
      bare: true
      sourcemaps: false
    }))
    .pipe(gulp.dest('./build/game'))
)

gulp.task('minify-dist', () ->
  return gulp.src(['./build/game/main.js'])
    .pipe(minify())
    .pipe(gulp.dest('./dist/game/'))
)

html = (target, debug) ->
  return () ->
    sources = [
      'html/index.html'
    ]
    if (debug)
      sources.push('html/test.html')
    gulp.src(sources)
      .pipe(gulp.dest(target))
    gulp.src(['node_modules/salet/lib/index.min.js'])
      .pipe(rename('salet.min.js'))
      .pipe(gulp.dest(target+"/game"))

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

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

# Fonts
fonts = (target) ->
  return () ->
    return gulp.src(['fonts/*']).pipe(gulp.dest(target))

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

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

# Autotests
gulp.task('tests', () ->
  gulp.src('test/*.js')
    .pipe(gulp.dest('./build/test/'))
)

gulp.task('procgen', (done) ->
  #for language in ['ru', 'en']
  for language in ['ru']
    patterns = glob.readdirSync("game/procgen/#{language}/*.cson", {})
    json = {}
    for filename in patterns
      snippet = cson.parseCSONString fs.readFileSync(filename)
      if not snippet.groups?
        snippet.groups = []
      if snippet.phrases?
        snippet.groups.push({
          tags: [],
          phrases: snippet.phrases
        })
        delete snippet.phrases
      pattern = path.basename(filename)
      pattern = pattern.replace(/\..+$/, "")
      json[pattern] = snippet

    mkdirp.sync "./build/game/procgen"
    # we stringify JS object into coffeescript…
    code = cson.stringify({json}, {
      format: "coffeescript"
      indent: " "
    })
    # cut the first line and assign to a var
    code = "improvdata_#{language} =\n"+code.substring(code.indexOf("\n")+1)
    # write it as a file
    fs.writeFileSync "./build/game/procgen/#{language}.coffee", code
    #and then see concatCoffee task where we compile this
  return done()
  ###
  return gulp.src([
    "build/game/procgen/ru.json",
    #"build/game/procgen/en.json",
  ])
  ###
)

gulp.task('concatCoffee', () ->
  gulp.src([
    # language
    './game/translations/ru.coffee'
    './build/game/procgen/ru.coffee'
    ## additional functions
    './game/mappings.coffee'
    ## Improv (coffeescript)
    './game/improv/template.coffee'
    './game/improv/index.coffee'
    './game/improv/filters.coffee'
    ## the actual game
    './game/1_maze.coffee' # map
    './game/2_model.coffee' # story logic
    './game/3_engine.coffee' # engine stuff
    './game/4_plot.coffee' # plot
    './game/5_gamepad.coffee' # basic gamepad support
    './game/6_gamepadinit.coffee' # gamepad initialization
  ]).pipe(concat('./main.coffee'))
    .pipe(gulp.dest('./build/game'))
)

gulp.task('coffee', gulp.series('procgen', 'concatCoffee', () ->
  return gulp.src("./build/game/main.coffee")
    .pipe(coffee({
      bare: true
      sourcemaps: true
    }))
    .pipe(gulp.dest('./build/game'))
))

gulp.task('build', gulp.parallel(
  'html',
  'img',
  'sass',
  'coffee',
  'audio',
  'fonts',
  'tests',
))

gulp.task('serve', gulp.series('build', () ->
  browserSync({
    server: {
      baseDir: 'build'
    }
    online: true
    browser: []
    ghostMode: false
  })

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

  gulp.watch(['./test/*.js'], gulp.series('tests'))
  gulp.watch(['./html/*.html'], gulp.series('html'))
  gulp.watch(['./sass/*.scss'], gulp.series('sass'))
  gulp.watch(['./img/*.png', './img/*.jpeg', './img/*.jpg'], gulp.series('img'))
  gulp.watch([
    './game/*.coffee'
    './game/translations/*.coffee'
  ], gulp.series('coffee'))
  gulp.watch([
    './game/procgen/*/*.cson'
  ], gulp.series('procgen'))

  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', false))
gulp.task('fonts-dist', fonts('./dist/fonts'))
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'))
)

gulp.task('remove-big-bundle-dist', (done) ->
  return gulp.src([
      './dist/game/main-min.js'
    ])
    .pipe(rm())
    .on('end', () -> done())
)

gulp.task('rename-min-bundle-dist', (done) ->
  return gulp.src([
      './dist/game/main-min.js'
    ])
    .pipe(rename('main.js'))
    .pipe(gulp.dest('./dist/game/'))
    .on('end', () -> done())
)

gulp.task('coffee-dist', gulp.series(
    'procgen'
    'concatCoffee'
    'bundle-dist'
    'minify-dist'
    'rename-min-bundle-dist'
    'remove-big-bundle-dist'
  )
)

gulp.task('dist', gulp.parallel(
  'html-dist',
  'img-dist',
  'sass-dist',
  'coffee-dist',
  'audio-dist',
  'fonts-dist',
  'legal-dist'
))

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