RSpec.describe Rack::Tracker::GoogleAnalytics do

  def env
    {misc: 'foobar'}
  end

  it 'will be placed in the head' do
    expect(described_class.position).to eq(:head)
    expect(described_class.new(env).position).to eq(:head)
  end

  describe '#ecommerce_events' do
    subject { described_class.new(env) }

    describe 'with stored ecommerce events' do
      before { allow(subject).to receive(:events).and_return([Rack::Tracker::GoogleAnalytics::Send.new, Rack::Tracker::GoogleAnalytics::Ecommerce.new]) }

      it 'will just return the ecommerce events' do
        expect(subject.ecommerce_events).to match_array(Rack::Tracker::GoogleAnalytics::Ecommerce)
      end
    end

    describe 'without stored ecommerce events' do
      before { allow(subject).to receive(:events).and_return([Rack::Tracker::GoogleAnalytics::Send.new]) }

      it 'will be empty' do
        expect(subject.ecommerce_events).to be_empty
      end
    end
  end

  describe "with events" do
    describe "default" do
      def env
        {'tracker' => {
          'google_analytics' => [
            Rack::Tracker::GoogleAnalytics::Send.new(category: "Users", action: "Login", label: "Standard")
          ]
        }}
      end

      subject { described_class.new(env, tracker: 'somebody').render }
      it "will show events" do
        expect(subject).to match(%r{ga\(\"send\",{\"hitType\":\"event\",\"eventCategory\":\"Users\",\"eventAction\":\"Login\",\"eventLabel\":\"Standard\"}\)})
      end
    end

    describe "with a event value" do
      def env
        {'tracker' => { 'google_analytics' => [
          Rack::Tracker::GoogleAnalytics::Send.new(category: "Users", action: "Login", label: "Standard", value: 5)
        ]}}
      end

      subject { described_class.new(env, tracker: 'somebody').render }
      it "will show events with values" do
        expect(subject).to match(%r{ga\(\"send\",{\"hitType\":\"event\",\"eventCategory\":\"Users\",\"eventAction\":\"Login\",\"eventLabel\":\"Standard\",\"eventValue\":5}\)},)
      end
    end
  end

  describe 'with e-commerce events' do
    describe "default" do
      def env
        {'tracker' => {
          'google_analytics' => [
            Rack::Tracker::GoogleAnalytics::Ecommerce.new({type: 'addItem', id: '1234', name: 'Fluffy Pink Bunnies', sku: 'DD23444', category: 'Party Toys', price: '11.99', quantity: '1'}),
            Rack::Tracker::GoogleAnalytics::Ecommerce.new({type: 'addTransaction', id: '1234', affiliation: 'Acme Clothing', revenue: 11.99, shipping: '5', tax: '1.29', currency: 'EUR'})
          ]
        }}
      end

      subject { described_class.new(env, tracker: 'somebody', ecommerce: true).render }
      it "will add items" do
        expect(subject).to match(%r{ga\(\"ecommerce:addItem\",#{{id: '1234', name: 'Fluffy Pink Bunnies', sku: 'DD23444', category: 'Party Toys', price: '11.99', quantity: '1'}.to_json}})
      end
      it "will add transaction" do
        expect(subject).to match(%r{ga\(\"ecommerce:addTransaction\",#{{id: '1234', affiliation: 'Acme Clothing', revenue: 11.99, shipping: '5', tax: '1.29', currency: 'EUR'}.to_json}})
      end
      it "will submit cart" do
        expect(subject).to match(%r{ga\('ecommerce:send'\);})
      end
    end
  end

  describe "with custom domain" do
    subject { described_class.new(env, tracker: 'somebody', cookieDomain: "railslabs.com").render }

    it "will show asyncronous tracker with cookieDomain" do
      expect(subject).to match(%r{ga\('create', 'somebody', {\"cookieDomain\":\"railslabs.com\"}\)})
      expect(subject).to match(%r{ga\('send', 'pageview'\)})
    end
  end

  describe "with enhanced_link_attribution" do
    subject { described_class.new(env, tracker: 'happy', enhanced_link_attribution: true).render }

    it "will embedded the linkid plugin script" do
      expect(subject).to match(%r{linkid.js})
    end
  end

  describe "with advertising" do
    subject { described_class.new(env, tracker: 'happy', advertising: true).render }

    it "will require displayfeatures" do
      expect(subject).to match(%r{ga\('require', 'displayfeatures'\)})
    end
  end

  describe "with e-commerce" do
    subject { described_class.new(env, tracker: 'happy', ecommerce: true).render }

    it "will require the ecommerce plugin" do
      expect(subject).to match(%r{ga\('require', 'ecommerce', 'ecommerce\.js'\)})
    end
  end

  describe "with anonymizeIp" do
    subject { described_class.new(env, tracker: 'happy', anonymize_ip: true).render }

    it "will set anonymizeIp to true" do
      expect(subject).to match(%r{ga\('set', 'anonymizeIp', true\)})
    end
  end

  describe "with dynamic tracker" do
    subject { described_class.new(env, { tracker: lambda { |env| return env[:misc] }}).render }

    it 'will call tracker lambdas to obtain tracking codes' do
      expect(subject).to match(%r{ga\('create', 'foobar', {}\)})
    end
  end

  describe 'adjusted bounce rate' do
    subject { described_class.new(env, tracker: 'afake', adjusted_bounce_rate_timeouts: [15, 30]).render }

    it "will add timeouts to push read events" do
      expect(subject).to match(%r{ga\('send', 'event', '15_seconds', 'read'\)})
      expect(subject).to match(%r{ga\('send', 'event', '30_seconds', 'read'\)})
    end
  end

end