require 'spec_helper'

describe IncomingLinksReport do

  describe 'top_referrers' do
    subject(:top_referrers) { IncomingLinksReport.find('top_referrers').as_json }

    def stub_empty_referrers_data
      IncomingLinksReport.stubs(:link_count_per_user).returns({})
      IncomingLinksReport.stubs(:topic_count_per_user).returns({})
    end

    it 'returns localized titles' do
      stub_empty_referrers_data
      top_referrers[:title].should be_present
      top_referrers[:xaxis].should be_present
      top_referrers[:ytitles].should be_present
      top_referrers[:ytitles][:num_clicks].should be_present
      top_referrers[:ytitles][:num_topics].should be_present
    end

    it 'with no IncomingLink records, it returns correct data' do
      stub_empty_referrers_data
      top_referrers[:data].should have(0).records
    end

    it 'with some IncomingLink records, it returns correct data' do
      IncomingLinksReport.stubs(:link_count_per_user).returns({'luke' => 4, 'chewie' => 2})
      IncomingLinksReport.stubs(:topic_count_per_user).returns({'luke' => 2, 'chewie' => 1})
      top_referrers[:data][0].should == {username: 'luke', num_clicks: 4, num_topics: 2}
      top_referrers[:data][1].should == {username: 'chewie', num_clicks: 2, num_topics: 1}
    end
  end

  describe 'top_traffic_sources' do
    subject(:top_traffic_sources) { IncomingLinksReport.find('top_traffic_sources').as_json }

    def stub_empty_traffic_source_data
      IncomingLinksReport.stubs(:link_count_per_domain).returns({})
      IncomingLinksReport.stubs(:topic_count_per_domain).returns({})
      IncomingLinksReport.stubs(:user_count_per_domain).returns({})
    end

    it 'returns localized titles' do
      stub_empty_traffic_source_data
      top_traffic_sources[:title].should be_present
      top_traffic_sources[:xaxis].should be_present
      top_traffic_sources[:ytitles].should be_present
      top_traffic_sources[:ytitles][:num_clicks].should be_present
      top_traffic_sources[:ytitles][:num_topics].should be_present
      top_traffic_sources[:ytitles][:num_users].should be_present
    end

    it 'with no IncomingLink records, it returns correct data' do
      stub_empty_traffic_source_data
      top_traffic_sources[:data].should have(0).records
    end

    it 'with some IncomingLink records, it returns correct data' do
      IncomingLinksReport.stubs(:link_count_per_domain).returns({'twitter.com' => 8, 'facebook.com' => 3})
      IncomingLinksReport.stubs(:topic_count_per_domain).returns({'twitter.com' => 2, 'facebook.com' => 3})
      top_traffic_sources[:data][0].should == {domain: 'twitter.com', num_clicks: 8, num_topics: 2}
      top_traffic_sources[:data][1].should == {domain: 'facebook.com', num_clicks: 3, num_topics: 3}
    end
  end

  describe 'top_referred_topics' do
    subject(:top_referred_topics) { IncomingLinksReport.find('top_referred_topics').as_json }

    def stub_empty_referred_topics_data
      IncomingLinksReport.stubs(:link_count_per_topic).returns({})
    end

    it 'returns localized titles' do
      stub_empty_referred_topics_data
      top_referred_topics[:title].should be_present
      top_referred_topics[:xaxis].should be_present
      top_referred_topics[:ytitles].should be_present
      top_referred_topics[:ytitles][:num_clicks].should be_present
    end

    it 'with no IncomingLink records, it returns correct data' do
      stub_empty_referred_topics_data
      top_referred_topics[:data].should have(0).records
    end

    it 'with some IncomingLink records, it returns correct data' do
      topic1 = Fabricate.build(:topic, id: 123); topic2 = Fabricate.build(:topic, id: 234)
      IncomingLinksReport.stubs(:link_count_per_topic).returns({topic1.id => 8, topic2.id => 3})
      Topic.stubs(:select).returns(Topic); Topic.stubs(:where).returns(Topic) # bypass some activerecord methods
      Topic.stubs(:all).returns([topic1, topic2])
      top_referred_topics[:data][0].should == {topic_id: topic1.id, topic_title: topic1.title, topic_slug: topic1.slug, num_clicks: 8 }
      top_referred_topics[:data][1].should == {topic_id: topic2.id, topic_title: topic2.title, topic_slug: topic2.slug, num_clicks: 3 }
    end
  end

end