require 'spec_helper'

describe Report do


  describe 'visits report' do

    let(:report) { Report.find('visits', cache: false) }

    context "no visits" do
      it "returns an empty report" do
        report.data.should be_blank
      end
    end

    context "with visits" do
      let(:user) { Fabricate(:user) }

      before do
        user.user_visits.create(visited_at: 1.day.ago)
        user.user_visits.create(visited_at: 2.days.ago)
      end

      it "returns a report with data" do
        report.data.should be_present
      end

    end


  end

  [:signup, :topic, :post].each do |arg|
    describe "#{arg} report" do
      pluralized = arg.to_s.pluralize

      let(:report) { Report.find(pluralized, cache: false) }

      context "no #{pluralized}" do
        it 'returns an empty report' do
          report.data.should be_blank
        end
      end

      context "with #{pluralized}" do
        before do
          fabricator = (arg == :signup ? :user : arg)
          Fabricate(fabricator, created_at: 25.hours.ago)
          Fabricate(fabricator, created_at: 1.hours.ago)
          Fabricate(fabricator, created_at: 1.hours.ago)
        end

        it 'returns correct data' do
          report.data[0][:y].should == 1
          report.data[1][:y].should == 2
        end
      end
    end
  end

  describe "total_users report" do
    let(:report) { Report.find("total_users", cache: false) }

    context "no total_users" do
      it 'returns an empty report' do
        report.data.should be_blank
      end
    end

    context "with users" do
      before do
        Fabricate(:user, created_at: 25.hours.ago)
        Fabricate(:user, created_at: 1.hours.ago)
        Fabricate(:user, created_at: 1.hours.ago)
      end

      it 'returns correct data' do
        report.data[0][:y].should == 3
        report.data[1][:y].should == 1
      end
    end
  end

  describe '#fetch' do
    context 'signups' do
      let(:report) { Report.find('signups', cache: true) }

      context 'no data' do
        context 'cache miss' do
          before do
            $redis.expects(:exists).with('signups:data').returns(false)
          end

          it 'should cache an empty data set' do
            $redis.expects(:setex).with('signups:data', Report.cache_expiry, "")
            report.data.should be_blank
          end
        end

        context 'cache hit' do
          before do
            $redis.expects(:exists).with('signups:data').returns(true)
          end

          it 'returns the cached empty report' do
            User.expects(:count_by_signup_date).never
            $redis.expects(:setex).never
            $redis.expects(:get).with('signups:data').returns('')
            report.data.should be_blank
          end
        end
      end

      context 'with data' do
        before do
          Fabricate(:user, created_at: 25.hours.ago)
          Fabricate(:user, created_at: 1.hour.ago)
          Fabricate(:user, created_at: 1.hour.ago)
        end

        context 'cache miss' do
          before do
            $redis.expects(:exists).with('signups:data').returns(false)
          end

          it 'should cache the data set' do
            $redis.expects(:setex).with do |key, expiry, string|
              string =~ /(\d)+-(\d)+-(\d)+,1/ and string =~ /(\d)+-(\d)+-(\d)+,2/
            end
            report()
          end

          it 'should return correct data' do
            report.data[0][:y].should == 1
            report.data[1][:y].should == 2
          end
        end

        context 'cache hit' do
          before do
            $redis.expects(:exists).with('signups:data').returns(true)
          end

          it 'returns the cached data' do
            User.expects(:count_by_signup_date).never
            $redis.expects(:setex).never
            $redis.expects(:get).with('signups:data').returns("#{2.days.ago.to_date.to_s},1|#{1.day.ago.to_date.to_s},2")
            report.data[0][:y].should == 1
            report.data[1][:y].should == 2
          end
        end
      end
    end
  end


end