class ItemsController < ApplicationController

  def index
    if(!session[:cart].nil?)
      items = session[:cart].keys
      @products = Product.where(:id => items)
    end
  end

  def add

    session[:cart] ||= {}

    product_id = params[:product_id].to_i

    session[:cart][product_id] ||= 0
    session[:cart][product_id] += 1

    redirect_to(items_url)
  end

  def destroy
    product_id = params[:product_id].to_i

    if(session[:cart][product_id] == 1)
      session[:cart].delete(product_id)
    else
      session[:cart][product_id]-=1
    end

    redirect_to(items_url)
  end

end