class EpisodesController < ApplicationController

  session :off, :only => [:index, :show, :home]

  before_filter :login_required, :except => [:index, :show, :home]
  before_filter :load_episode_lists
  
  caches_page :index, :show, :home
  cache_sweeper :episode_sweeper, :only => [:create, :update, :destroy]

  after_filter :cache_index, :only => [:home]

  # GET /episodes
  # GET /episodes.xml
  def index
    @episodes = @program.episodes

    respond_to do |format|
      format.html # index.rhtml
      format.xml  { render :xml => @program.to_rss('mp3') }
      # format.yaml  { render :xml => @episodes.to_yaml }
    end
  end
  
  # GET /episodes/1
  # GET /episodes/1.xml
  def show
    @episode = Episode.find_by_permalink(params[:id])
    
    respond_to do |format|
      format.html
      format.xml  { render :xml => @episode.to_xml }
    end
  end
  
  # GET /episodes/new
  def new
    @episode = Episode.new
  end
  
  # POST /episodes
  # POST /episodes.xml
  def create
    @episode = Episode.new(params[:episode])
    @episode.program_id = params[:program_id]
    
    respond_to do |format|
      if @episode.save
        flash[:notice] = 'Episode was successfully created.'
        
        format.html { redirect_to program_url(@episode.program_id) }
        format.xml do
          headers["Location"] = episode_url(@episode.program_id, @episode)
          render :nothing => true, :status => "201 Created"
        end
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @episode.errors.to_xml }
      end
    end
  end

  # GET /episodes/1;edit
  def edit
    @episode = Episode.find_by_permalink(params[:id])
  end
  
  # PUT /episodes/1
  # PUT /episodes/1.xml
  def update
    @episode = Episode.find_by_permalink(params[:id])
    
    respond_to do |format|
      if @episode.update_attributes(params[:episode])
        format.html { redirect_to program_url(@episode.program_id) }
        format.xml  { render :nothing => true }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @episode.errors.to_xml }        
      end
    end
  end
  
  # DELETE /episodes/1
  # DELETE /episodes/1.xml
  def destroy
    @episode = Episode.find_by_permalink(params[:id])
    @episode.destroy
    
    respond_to do |format|
      format.html { redirect_to program_url(params[:program_id]) }
      format.js # Execute destroy.rjs
      format.xml  { render :nothing => true }
    end
  end

  ### Non-CRUD Actions

  ##
  # Show the most recent episode.
  def home
    if @episode = @program.episodes.first
      render :action => 'show'
    else
      redirect_to programs_url # No data...send to page where some can be made
    end
  end

protected

  def cache_index
    if (params[:program_id].to_i == 1) && (ActionController::Base.perform_caching)
      FileUtils.cp  File.join(RAILS_ROOT, 'public', 'programs', '1', 'episodes;home.html'),
                    File.join(RAILS_ROOT, 'public', 'index.html')
    end
  end
  
end