class PlaylistsController < ApplicationController
  
  before_filter :find_user
  before_filter :find_playlists, :except => [:index, :new, :create]
  before_filter :login_required, :except => [:index, :show]
 
  before_filter :find_tracks, :only => [:show, :edit]
  in_place_edit_for :playlist, :description
  in_place_edit_for :playlist, :title
  
  
  # GET /playlists
  # GET /playlists.xml
  def index
    @playlists = @user.playlists.find(:all)
 
    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @playlists }
    end
  end
 
  # GET /playlists/1
  # GET /playlists/1.xml
  def show
    @page_title = "\"#{@playlist.title}\" by #{@user.name} on alonetone"
    respond_to do |format|
      format.html # show.html.erb
      format.xml 
      format.rss 
    end
  end
 
  # GET /playlists/new
  # GET /playlists/new.xml
  def new
    @playlist = @user.playlists.build
    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @playlist }
    end
  end
 
  # GET /playlists/1/edit
  def edit
    # allow them to add their own assets
    @assets = @user.assets.paginate(:all, :limit => 10, :per_page => 10, :order => 'created_at DESC', :page => params[:page])
    @listens = @user.listens.find(:all, :limit => 10, :order => 'listens.created_at DESC')
    respond_to do |format|
      format.html
      format.js do
        render :update do |page|
            page.replace 'your_stuff_box', :partial => "your_stuff"
        end
      end
    end
  end
 
  
  def add_track
    @track = @playlist.tracks.create(:asset_id => params[:asset_id].split("_")[1]) if params[:asset_id]
    respond_to do |format|
      format.html { render :layout => false }
      format.js 
    end
  end
  
  def attach_pic
    @pic = @playlist.build_pic(params[:pic])
    if @pic.save
      flash[:notice] = 'Cover art updated!'
    else
      flash[:error] = 'Whups, make sure you choose a valid jpg, gif, or png file!'      
    end
    redirect_to edit_user_playlist_path(@user, @playlist)
  end
  
  
  
  def remove_track
    @track = @playlist.tracks.find(params[:track_id]) 
    if @track.destroy 
      respond_to do |format|
        format.js
      end
    else
      render :nothing => true
    end
  end
  
  def sort_tracks
    # get the params for this playlist
    params["tracks"].each_with_index do |id, position|
      Track.update(id, :position => position)
    end
    render :nothing => true
  end
 
  # POST /playlists
  # POST /playlists.xml
  def create
    @playlist = @user.playlists.build(params[:playlist])
 
    respond_to do |format|
      if @playlist.save
        flash[:notice] = 'Playlist was successfully created.'
        format.html { redirect_to edit_user_playlist_path(@user, @playlist) }
        format.xml  { render :xml => @playlist, :status => :created, :location => @playlist }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @playlist.errors, :status => :unprocessable_entity }
      end
    end
  end
 
 
 
  # PUT /playlists/1
  # PUT /playlists/1.xml
  def update
 
    respond_to do |format|
      if @playlist.update_attributes(params[:playlist])
        flash[:notice] = 'Playlist was successfully updated.'
        format.html { redirect_to(@playlist) }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @playlist.errors, :status => :unprocessable_entity }
      end
    end
  end
 
  # DELETE /playlists/1
  # DELETE /playlists/1.xml
  def destroy
    @playlist.destroy
 
    respond_to do |format|
      format.html { redirect_to(user_playlists_url(@user)) }
      format.xml  { head :ok }
    end
  end
  
  
  protected
  
  def authorized?
    (!%w(destroy admin edit update remove_track attach_pic sort_tracks add_track set_playlist_description set_playlist_title).include?(action_name)) || (@playlist.user_id.to_s == current_user.id.to_s) || admin?
  end
  
  def find_playlists
    @playlist = @user.playlists.find_by_permalink(params[:permalink] || params[:id])
    @playlist = @user.playlists.find(params[:id]) if !@playlist && params[:id] 
  end
  
  def find_tracks
    @tracks = @playlist.tracks
  end
  
end