class AlbumsController < ApplicationController

  # login is required for the following actions
  before_filter :login_required, :only => [ :add, :delete, :edit ]

  def add
    if request.post?
      @album = Album.new()
      @album.title = params[:album][:title]
      @album.user = @current_user
      @album.save

      # assing each selected photo to this new album
      if not params[:image].nil?
        params[:image].each{ |i|
          # i contains the image id and 1 if selected or 0 if not selected i=[image_id, selected?]
          if i[1]=="1"  # image was selected
            p=Photo.find_by_id(i[0])
            p.album = @album
            p.save
          end
          }
      end
      redirect_to( :action => "show", :id => @album.id)
    end
    @unassigned_photos = Photo.find_all_by_album_id(nil)
  end

  def show
    if params[:id]=="" or params[:id].nil? # no album selected
      redirect_to(:action => "all", :id => "")
    else
      @album = Album.find_by_id(params[:id])
      @photos = @album.photos
    end
  end

  def all
    @albums = Album.find(:all)
  end

  def delete
    @album = Album.find_by_id(params[:id])
    @album.photos.each{ |p|
      p.album_id = nil
      p.save
      }
    @album.destroy
    redirect_to(:action => "all", :id => "")
  end

  def edit
    if request.post?
      @album = Album.find_by_id(params[:id])
      @unassigned_photos = Photo.find_all_by_album_id(nil)
      if not params[:album].nil?
        @album.title = params[:album]["title"]
        @album.user = @current_user
        # assing each selected photo to this new album
        if not params[:image].nil?
          params[:image].each{ |i|
            # i contains the image id and 1 if selected or 0 if not selected i=[image_id, selected?]
            if i[1]=="1"  # image was selected
              p=Photo.find_by_id(i[0])
              p.album = @album
              p.save
            else
              p=Photo.find_by_id(i[0])
              p.album = nil
              p.save
            end
          }
        end
        @album.save
        redirect_to(:action => "show", :id => @album.id)
      end
    end
  end

end