require 'spec_helper'

describe ActiveAdmin::Views::PaginatedCollection do
  describe "creating with the dsl" do

    before :all do
      load_defaults!
      reload_routes!
    end

    let(:view) do
      view = mock_action_view
      view.request.stub!(:query_parameters).and_return({:controller => 'admin/posts', :action => 'index', :page => '1'})
      view.controller.params = {:controller => 'admin/posts', :action => 'index'}
      view
    end

    # Helper to render paginated collections within an arbre context
    def paginated_collection(*args)
      render_arbre_component({:paginated_collection_args => args}, view) do
        paginated_collection(*paginated_collection_args)
      end
    end

    let(:collection) do
      posts = [Post.new(:title => "First Post"), Post.new(:title => "Second Post"), Post.new(:title => "Third Post")]
      Kaminari.paginate_array(posts).page(1).per(5)
    end

    before do
      collection.stub!(:reorder) { collection }
    end

    context "when specifying collection" do
      let(:pagination) do
        paginated_collection(collection)
      end

      it "should set :collection as the passed in collection" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>all 3</b> posts"
      end

      it "should raise error if collection has no pagination scope" do
        lambda {
          paginated_collection([Post.new, Post.new])
        }.should raise_error(StandardError, "Collection is not a paginated scope. Set collection.page(params[:page]).per(10) before calling :paginated_collection.")
      end
    end

    context "when specifying :param_name option" do
      let(:collection) do
        posts = 10.times.inject([]) {|m, _| m << Post.new }
        Kaminari.paginate_array(posts).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection, :param_name => :post_page) }

      it "should customize the page number parameter in pagination links" do
        pagination.children.last.content.should match(/\/admin\/posts\?post_page=2/)
      end
    end

    context "when specifying :download_links => false option" do
      let(:collection) do
        posts = 10.times.inject([]) {|m, _| m << Post.new }
        Kaminari.paginate_array(posts).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection, :download_links => false) }

      it "should not render download links" do
        pagination.find_by_tag('div').last.content.should_not match(/Download:/)
      end
    end

    context "when specifying :entry_name option with a single item" do
      let(:collection) do
        posts = [Post.new]
        Kaminari.paginate_array(posts).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection, :entry_name => "message") }

      it "should use :entry_name as the collection name" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>1</b> message"
      end
    end

    context "when specifying :entry_name option with multiple items" do
      let(:pagination) { paginated_collection(collection, :entry_name => "message") }

      it "should use :entry_name as the collection name" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>all 3</b> messages"
      end
    end

    context "when specifying :entry_name and :entries_name option with a single item" do
      let(:collection) do
        posts = [Post.new]
        Kaminari.paginate_array(posts).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection, :entry_name => "singular", :entries_name => "plural") }

      it "should use :entry_name as the collection name" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>1</b> singular"
      end
    end

    context "when specifying :entry_name and :entries_name option with a multiple items" do
      let(:pagination) { paginated_collection(collection, :entry_name => "singular", :entries_name => "plural") }

      it "should use :entries_name as the collection name" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>all 3</b> plural"
      end
    end

    context "when omitting :entry_name with a single item" do
      let(:collection) do
        posts = [Post.new]
        Kaminari.paginate_array(posts).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection) }

      it "should use 'post' as the collection name when there is no I18n translation" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>1</b> post"
      end

      it "should use 'Singular' as the collection name when there is an I18n translation" do
        I18n.stub(:translate) { "Singular" }
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>1</b> Singular"
      end
    end

    context "when omitting :entry_name with multiple items" do
      let(:pagination) { paginated_collection(collection) }

      it "should use 'posts' as the collection name when there is no I18n translation" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>all 3</b> posts"
      end

      it "should use 'Plural' as the collection name when there is an I18n translation" do
        I18n.stub(:translate) { "Plural" }
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>all 3</b> Plural"
      end
    end

    context "when specifying an empty collection" do
      let(:collection) do
        posts = []
        Kaminari.paginate_array(posts).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection) }

      it "should display 'No entries found'" do
        pagination.find_by_class('pagination_information').first.content.should == "No entries found"
      end
    end

    context "when collection comes from find with GROUP BY" do
      let(:collection) do
        %w{Foo Foo Bar}.each {|title| Post.create(:title => title) }
        Post.select(:title).group(:title).page(1).per(5)
      end

      let(:pagination) { paginated_collection(collection) }

      it "should display proper message (including number and not hash)" do
        pagination.find_by_class('pagination_information').first.content.should == "Displaying <b>all 2</b> posts"
      end
    end

    context "when collection with many pages comes from find with GROUP BY" do
      let(:collection) do
        %w{Foo Foo Bar Baz}.each {|title| Post.create(:title => title) }
        Post.select(:title).group(:title).page(1).per(2)
      end

      let(:pagination) { paginated_collection(collection) }

      it "should display proper message (including number and not hash)" do
        pagination.find_by_class('pagination_information').first.content.
          gsub('&nbsp;',' ').should == "Displaying posts <b>1 - 2</b> of <b>3</b> in total"
      end
    end

    context "when viewing the last page of a collection that has multiple pages" do
      let(:collection) do
        posts = [Post.new] * 81
        Kaminari.paginate_array(posts).page(3).per(30)
      end

      let(:pagination) { paginated_collection(collection) }

      it "should show the proper item counts" do
        pagination.find_by_class('pagination_information').first.content.
            gsub('&nbsp;',' ').should == "Displaying posts <b>61 - 81</b> of <b>81</b> in total"
      end
    end


  end
end