#!/usr/bin/env ruby
# encoding:  UTF-8

def secure_require(name)
    begin 
        require name
    rescue LoadError
        $stderr.print "#{File.basename(__FILE__)} requires #{name} gem to work\n Pleas install it with: gem install #{name}\n"
        exit
    end
end

require 'rubygems'
secure_require 'highline'
secure_require 'highline/import'
secure_require 'parseconfig'
secure_require 'nokogiri'
secure_require 'iconv'
require File.join(File.dirname(__FILE__),'..','lib','lib-ampache')
require File.join(File.dirname(__FILE__),'..','lib','lib-classes')

# XXX monkey patch for utf8 on ruby 1.9
if /^1\.9/ === RUBY_VERSION then
    class HighLine
        def wrap (text)
            text = text.force_encoding("UTF-8")
            wrapped = [ ]
            text.each_line do |line|
              while line =~ /([^\n]{#{@wrap_at + 1},})/
                search  = $1.dup
                replace = $1.dup
                if index = replace.rindex(" ", @wrap_at)
                  replace[index, 1] = "\n"
                  replace.sub!(/\n[ \t]+/, "\n")
                  line.sub!(search, replace)
                else
                  line[$~.begin(1) + @wrap_at, 0] = "\n"
                end
              end
              wrapped << line
            end
            return wrapped.join
        end
    end
end

# Ampache ruby parameters
begin
ar_config = ParseConfig.new(File.expand_path('~/.ruby-ampache'))
rescue
   raise "\nPlease create a .ruby-ampache file on your home\n See http://github.com/ghedamat/ruby-ampache for infos\n"
end

# ruby-ampache highline version
$terminal.wrap_at = 80
$terminal.page_at = 22

def print_albums(albums)
     choose do |menu|
        menu.prompt = "Choose an album or abort (1) "
        menu.choice(HighLine.new.color "ABORT", :red)   
        albums.each do |a|
            menu.choice(a.name) { a.addToPlaylist(@pl)}  
        end
    end   
end

def print_artists(artists)
    if artists.empty?
       reset_token 
       say("No results, retrying")
       artists = @ar.artists 
    end
    choose do |menu|
        menu.prompt = "Choose an artists or abort (1)"
        menu.choice(HighLine.new.color "ABORT", :red)  
        artists.each do |a|
            menu.choice(a.name) { print_albums(a.albums) }  
        end
    end
end

# try to reset token if it's not valid
def reset_token
    @ar.token = @ar.getAuthToken(@ar.user,@ar.psw)
end

def credits
    s = <<STR
Ruby-Ampache: Ultra-simple, low-featured command line Ampache player (uses mplayer for playing)
Author: Mattia Gheda aka ghedamat
Homepage: http://github.com/ghedamat/ruby-ampache
Author-mail: thamayor@gmail.com

Usage: pick your choice from the menu. 
       You can start playing songs from your ampache server right now! 
       Simply choose an artist and than an album
       You can queue up as many albums you like
       Songs are queued up into mplayer playlist

STR
    return s
end

# MAIN
@ar =AmpacheRuby.new(ar_config.get_value('AMPACHE_HOST'),ar_config.get_value('AMPACHE_USER'), ar_config.get_value('AMPACHE_USER_PSW'))
$options = {}
$options[:path] = ar_config.get_value('MPLAYER_PATH')
$options[:timeout] = ar_config.get_value('TIMEOUT').to_i
@pl = AmpachePlaylist.new

while true 
    choose do |menu|
        menu.prompt = "pick your choice!"
        menu.choice("now playing") { say(HighLine.new.color(@pl.nowPlaying, :red)) }
        menu.choice("skip this song") { @pl.next; say(HighLine.new.color(@pl.nowPlaying, :red)) }
        menu.choice("add another album to playlist") { print_artists(@ar.artists); say(HighLine.new.color(@pl.nowPlaying, :red)) }
        menu.choice("look for an artist") {  print_artists(@ar.artists(ask("Artist name?"))); say(HighLine.new.color(@pl.nowPlaying, :red)) }
        menu.choice("stop playing") { @pl.stop } 
        menu.choice("pause playing") { @pl.pause; say(HighLine.new.color("pause toggle!",:red)) } 
        menu.choice("about ruby-ampache") { say(HighLine.new.color credits, :red) }
        menu.choice("quit") { @pl.stop; exit} 
    end
end