require 'spec_helper'

describe ActiveAdmin::Filters::ResourceExtension do

  let(:resource) do
    namespace = ActiveAdmin::Namespace.new(ActiveAdmin::Application.new, :admin)
    namespace.register(Post)
  end

  it "should return the defaults if no filters are set" do
    resource.filters.keys.sort.should == [
      :author, :body, :category, :created_at, :published_at, :starred, :title, :updated_at
    ]
  end

  it "should not have defaults when filters are disabled on the resource" do
    resource.filters = false
    resource.filters.should be_empty
  end

  it "should not have defaults when the filters are disabled on the namespace" do
    resource.namespace.filters = false
    resource.filters.should be_empty
  end

  it "should not have defaults when the filters are disabled on the application" do
    resource.namespace.application.filters = false
    resource.filters.should be_empty
  end

  describe "removing a filter" do
    it "should work" do
      resource.filters.keys.should include :author
      resource.remove_filter :author
      resource.filters.keys.should_not include :author
    end

    it "should work as a string" do
      resource.filters.keys.should include :author
      resource.remove_filter 'author'
      resource.filters.keys.should_not include :author
    end

    it "should be lazy" do
      resource.should_not_receive :default_filters # this hits the DB
      resource.remove_filter :author
    end

    it "should not prevent the default filters from being added" do
      resource.remove_filter :author
      resource.filters.should_not be_empty
    end

    it "should raise an exception when filters are disabled" do
      resource.filters = false
      expect{ resource.remove_filter :author }.to raise_error ActiveAdmin::Filters::Disabled
    end
  end

  describe "adding a filter" do
    it "should work" do
      resource.add_filter :title
      resource.filters.should eq title: {}
    end

    it "should work as a string" do
      resource.add_filter 'title'
      resource.filters.should eq title: {}
    end

    it "should work with specified options" do
      resource.add_filter :title, as: :string
      resource.filters.should eq title: {as: :string}
    end

    it "should override an existing filter" do
      resource.add_filter :title, one: :two
      resource.add_filter :title, three: :four

      resource.filters.should eq title: {three: :four}
    end

    it "should keep specified options" do
      resource.add_filter :title, one: :two

      resource.filters.each do |attribute, opts|
        opts.delete(:one)
      end

      resource.filters.should eq title: {one: :two}
    end

    it "should preserve default filters" do
      resource.preserve_default_filters!
      resource.add_filter :count, as: :string

      resource.filters.keys.sort.should == [
        :author, :body, :category, :count, :created_at, :published_at, :starred, :title, :updated_at
      ]
    end

    it "should raise an exception when filters are disabled" do
      resource.filters = false
      expect{ resource.add_filter :title }.to raise_error ActiveAdmin::Filters::Disabled
    end
  end

  it "should reset filters" do
    resource.add_filter :title
    resource.filters.size.should == 1
    resource.reset_filters!
    resource.filters.size.should > 1
  end

  it "should add a sidebar section for the filters" do
    resource.sidebar_sections.first.name.should == :filters
  end

end