#!/usr/bin/env ruby

require 'pp'
require 'observer'
require 'logger'
require 'json/pure'
require_relative 'soundcloud.rb'
require_relative 'mpg123player.rb'
require_relative 'ncurses_ui.rb'

class Cloudruby
  def init(q, config)
    @config = config
    @cloud = SoundCloud.new "76796f79392f9398288cdac3fe3391c0"
    @player = MPG123Player.new
    @ui = NCursesUI.new self, (@config[:ncurses] || @config[:curses])

    # @logger = Logger.new "logfile.log"
    @logger = Logger.new STDERR
    # @logger.level = Logger::DEBUG
    @logger.level = Logger::Severity::UNKNOWN

    @player.logger = @logger
    @ui.logger = @logger
    @logger.info {"logger inited"}
    
    @player.add_observer @ui, :player_update
    @player.add_observer self
    @cloud.add_observer @ui, :cloud_update
    @logger.info {"observer assigned"}

    @cloud.load_playlist q
    @logger.info {"loaded playlist"}
    @cloud.shufflePlaylist unless @config[:"no-shuffle"]
    @logger.info {"playlist shuffled"}
    nextTrack

    trap("INT") do
      self.quit
    end
  end

  def nextTrack
    track = @cloud.nextTrack
    unless track
      puts "Nothing found"
      quit
    else
      @player.play track
    end
  end

  def prevTrack
    track = @cloud.prevTrack
    unless track
      puts "Nothing found"
      quit
    else
      @player.play track
    end
  end

  def pause
    @player.pause
  end

  def volumeUp
    @player.volume = 5
  end

  def volumeDown
    @player.volume = -5
  end
  
  def toggleMute
    @player.mute
  end

  def run
    @ui.run
  end

  # jump to next track, if current track finishes
  def update(arg)
    state = arg[:state]
    case state
    when :stop
      nextTrack
    end
  end

  def download
    @cloud.download @config[:download_dir]
  end

  # quit app and free all resources
  def quit
    @ui.close
    @player.close
    @logger.close
    exit
  end
end
if $0 == __FILE__
  @config = {}
  @query = []
  cfile = File.join Dir.home, ".#{File.basename($0)}.json"

  ARGV.each do |a|
    if a[0, 2] == "--"
      a = a[2..-1]
      key, value = a.split("=", 2)
      @config[key.to_sym] = value || true
    else
      @query << a
    end
  end

  if @config[:noconfig].nil? && File.readable?(cfile)
    File.open cfile, 'r' do |file|
      jsonconf = JSON.load file, nil, :symbolize_names => true
      @config = jsonconf.merge(@config)
    end
  end
  
  @config[:download_dir] ||= Dir.pwd

  @query = @query.join " "

  c = Cloudruby.new
  c.init @query, @config
  c.run
end