jshoe/coursequestionbank

class CollectionsController < ApplicationController
  load_and_authorize_resource
  # after_filter :set_current_collection

  # def set_current_collection
  # end

  def new
    @collection = Collection.new
  end

  def edit
    @collection = Collection.find(params[:id])
    @problems = @collection.problems
  end
  
  def collection_errors(collection)
    flash[:notice] =  collection.errors.messages.map {|key, value| key.to_s + ' ' + value.to_s}.join ' ,'
  end

  # creates a new collection with user specified values and sets as current collection
  def create
    collection = @current_user.collections.create
    collection.set_attributes(params)
    
    if not collection.valid?
      collection_errors(collection)
      redirect_to :back and return
    else
      collection.save
    end
    redirect_to collection_path(:id => collection.id)
  end

  def show
    @collection = Collection.find(params[:id])
    @problems = @collection.problems
  end

  def update
    collection = Collection.find(params[:id])
    collection.set_attributes(params)
    
    if not collection.valid?
      collection_errors(collection)
      redirect_to :back and return
    else
      collection.save
      # if params[:is_public] != nil
      #   collection.problems.each{ |prob| prob.is_public = collection.is_public ; prob.save }
      # end
    end
    redirect_to collection_path(:id => collection.id)
  end

  def destroy
    Collection.find(params[:id]).destroy
    flash[:notice] = 'Collection deleted'
    redirect_to profile_path
  end
  
  # def add_problems
  #   collection = Collection.find(params[:id])
  #   problem_ids = self.class.parse_list params[:problem_ids]
  #   problems = problem_ids.map{|id| Problem.find_by_id(id)}.reject{|p| p.nil?}
  #   problems.each {|p| collection.problems << p if !collection.problems.include?(p)}
  #   flash[:notice] = "Problems added"
  #   redirect_to :back
  # end
  
  # def remove_problems
  #   collection = Collection.find(params[:id])
  #   problem_ids = self.class.parse_list params[:problem_ids]
  #   problems = problem_ids.map{|id| Problem.find_by_id(id)}.reject{|p| p.nil?}
  #   problems.each {|p| collection.problems.delete(p) if collection.problems.include?(p)}
  #   flash[:notice] = "Problems removed"
  #   redirect_to :back
  # end

  def export
    @collection = Collection.find(params[:id])
    
    @ruql_code = @collection.export('ruql')
    @html_code = @collection.export('Html5')
    @edx_code = @collection.export('EdXml')
    @autoqcm_code = @collection.export('AutoQCM')

    if not @html_code
      flash[:notice] = 'Cannot export an empty collection! Add some questions to your collection first!'
      redirect_to collection_path(:id => @collection.id)
    end
  end
  
  def preview
    html_code = Collection.find(params[:id]).export('Html5')
    render :text => html_code
  end

  def finalize_upload
    @collections = params[:ids].map{|collection_id| Collection.find(collection_id)}
    @collections.each{|c| authorize! :read, c}
  end
end