class Sforwarder < Plugin
  def initialize
    super
    @links= @registry[:links]||Hash.new
  end

  def join_linked_channels
    @links.to_a.flatten.uniq.each{|channel|
      begin
        @bot.join '#test'
      rescue
        warn "Sforwarder :: joining #{channel} failed"
      end
    }
    @joined = true
  end

  def add_link m, params
    _in = params[:channel_in]
    _out = params[:channel_out]
    unless _in =~ /\#.+/ && _out =~ /\#.+/
      m.reply "there is atleast one not valid channel name"
      return
    end
    @bot.join _in
    @bot.join _out

    @links[_in]||=Array.new
    unless  @links[_in].include? _out
      @links[_in].push _out
    end
    @registry[:links]=@links
    m.reply "#{params[:channel_in]} => #{params[:channel_out]}"
  end


  def links_inspect m, params
    m.reply @links.inspect
  end

  def del_link m, params
    chain = params[:chain_name]
    if @links.keys.include? chain
      @links[chain]=[]
      @registry[:links]=@links
      m.reply "deleted the chain for channel #{chain}"
    else
      m.reply "no chain called #{chain} try 'inspect forwarder'"
    end
  end
  def message m
    join_linked_channels unless @joined
      
    if m.channel && @links.keys.include?(channel=m.channel.name)
      @links[channel].each{|_out|
        @bot.say _out, "<_#{m.source}@#{channel}_> #{m.plainmessage}"
      }
    end
  end
  
  def help plugin, topic=''
    case topic
    when 'forward'
      "forward #channel_in => #channel_out\t:   adding channel_out to #channel_in's forward chain"
    when 'delete forward chain'
      "delete forward chain #channel\t:   delet the forwarding rule for #channel"
    when 'inspect forwarder'
      "inspect forwarder\t:   shows you all the forwarding rules"
    else
      "this is a simple forwarder, it can forward any message, from any channel to any other channel on the server.\nOfcourse the bot must be allowed to be present in both of them, there won't be any error message if joining a channel fails password protected channels are not supported yet, I also don't understand the auth_path option so it's possible for everyone to edit everything(what's not too bad I think most people are good :) )"
    end

  end

end

plugin = Sforwarder.new
plugin.map "forward :channel_in => :channel_out", :action => 'add_link', :auth_path => 'edit'
plugin.map "delete forward chain :chain_name", :action => 'del_link', :auth_path => 'edit'
plugin.map  "inspect forwarder", :action => 'links_inspect', :auth_path => 'view'