#!/usr/bin/env ruby

require 'gli'
require 'methadone'
require 'imuzer.rb'
require 'json'
require 'rainbow'

include GLI::App
program_desc 'a demo tool for iMuze API'

desc 'Be verbose'
switch [:v, :verbose]

desc 'Email from your iMuze user account'
arg_name 'email'
flag [:e, :email]

desc 'Password from your iMuze user account'
arg_name 'password'
flag [:p, :password]

desc 'list all musical genres and subgenres'
command :genres do |c|
  puts 'Listing iMuze musical genres with sub-genres...'
  c.action do |global_options, options, args|
    response = Imuze::GetGenres.call global_options
    response['genres'].each do |genre|
      print " #{genre['name']}: "
      genre['subgenres'].each{|sg| print Rainbow("#{sg}, ").bright}
      puts
    end
  end
end

desc 'composes a music'
arg 'genre', :required
arg 'subgenre', :required
arg 'duration', :required
arg 'structure', :required
command :compose do |c|
  c.switch [:c, :crop]
  c.flag 'fadeout_ms', arg_name: 'fadeout_ms',
                       type: Integer,
                       desc: 'fadeout in milliseconds'
  c.flag 'voices_volume', arg_name: 'voices_volume',
                          type: Integer,
                          desc: 'volume of voice track'

  c.action do |global_options, options, args|
    help_now!('credentials required to compose music') if global_options[:email].nil? || global_options[:password].nil?
    help_now!('id is required') if args.size < 3
    genre = args[0]
    subgenre = args[1]
    duration = args[2]
    structure = args[3]
    puts 'Authenticating to iMuze ....'
    response = Imuze::CreateToken.call global_options[:email],
                                       global_options[:password]
    FormatResponse.call response, options
    token = response['token']
    music = "\"#{subgenre}\" \"#{genre}\""
    puts "Composing your track #{music} on iMuze .... please wait"
    start = Time.now
    response = Imuze::CreateMusic.call token,
                                       duration,
                                       genre, subgenre, structure,
                                       options
    FormatResponse.call response, global_options
    elapsed = Time.now - start
    puts "Done composing your music in #{elapsed} seconds"
    mp3_uri = response['mp3_uri']
    puts "Playing your #{music} mp3 from iMuze ...."
    Imuze::GetMusic.call token, mp3_uri
  end
end

exit run(ARGV)