module API
  module V1
    class Articles < Grape::API

      before { authenticate! }
   
      resource :articles do

        #FIXME See if it's possible to use pagination instead of DateTime control. see a way to use this pagination logic genericaly
        get do
          first_update = DateTime.parse(params[:first_update]) if params[:first_update]
          last_update = DateTime.parse(params[:last_update]) if params[:last_update]
  
          if first_update.nil?
            begin_date = Article.first.created_at
            end_date = last_update.nil? ? DateTime.now : last_update
          else
            begin_date = first_update
            end_date = DateTime.now
          end
  
          limit = params[:limit].to_i
          limit = 20 if limit == 0
          conditions = {}
          conditions[:type] = params[:content_type] if params[:content_type] #FIXME validate type
          conditions[:created_at] = begin_date...end_date
          present Article.find(:all, :conditions => conditions, :offset => (first_update.nil? ? 0 : 1), :limit => limit, :order => "created_at DESC"), :with => Entities::Article
        end
  
        #FIXME load article with environment context 
        get ':id' do
          present Article.find(params[:id]), :with => Entities::Article
        end

        #FIXME load article with environment context 
        get ':id/children' do
          present Article.find(params[:id]).children, :with => Entities::Article
        end

        #FIXME load article with environment context 
        get ':id/children/:child_id' do
          present Article.find(params[:id]).children.find(params[:child_id]), :with => Entities::Article
        end


      end
   
    end
  end
end