# frozen_string_literal: true

require 'rails_helper'

describe Sitemap do
  describe '.regenerate_sitemaps' do
    fab!(:topic) { Fabricate(:topic) }

    it 'always create the news and recent sitemaps' do
      described_class.regenerate_sitemaps

      sitemaps = Sitemap.where(name: [Sitemap::NEWS_SITEMAP_NAME, Sitemap::RECENT_SITEMAP_NAME], enabled: true)

      expect(sitemaps.exists?).to eq(true)
    end

    it 'bumps existing sitemaps last_posted_at attribute' do
      news = Sitemap.create!(name: Sitemap::NEWS_SITEMAP_NAME, enabled: true, last_posted_at: 10.days.ago)

      described_class.regenerate_sitemaps

      expect(news.reload.last_posted_at).to eq_time(topic.updated_at)
    end

    it 'creates the sitemap first page when there is a topic' do
      described_class.regenerate_sitemaps
      first_page = Sitemap.find_by(name: '1')

      expect(first_page.enabled).to eq(true)
    end

    it "only counts topics from unrestricted categories" do
      restricted_category = Fabricate(:category, read_restricted: true)
      topic.update!(category: restricted_category)
      Category.update_stats

      described_class.regenerate_sitemaps
      first_page = Sitemap.find_by(name: '1')

      expect(first_page).to be_nil
    end

    it 'disable empty pages' do
      unused_page = Sitemap.touch('10')

      described_class.regenerate_sitemaps

      expect(unused_page.reload.enabled).to eq(false)
    end
  end

  describe '#topics' do
    shared_examples 'Excludes hidden and restricted topics' do
      it "doesn't include topics from restricted categories" do
        restricted_category = Fabricate(:category, read_restricted: true)
        Fabricate(:topic, category: restricted_category)

        topics_data = sitemap.topics

        expect(topics_data).to be_empty
      end

      it "doesn't include hidden topics" do
        Fabricate(:topic, visible: false)

        topics_data = sitemap.topics

        expect(topics_data).to be_empty
      end
    end

    context 'when the sitemap corresponds to a page' do
      let(:sitemap) { described_class.new(enabled: true, last_posted_at: 1.minute.ago, name: '1') }

      it 'returns an empty array if there no topics' do
        expect(sitemap.topics).to be_empty
      end

      it 'returns all the neccessary topic attributes to render a sitemap URL' do
        topic = Fabricate(:topic)

        topics_data = sitemap.topics.first

        expect(topics_data[0]).to eq(topic.id)
        expect(topics_data[1]).to eq(topic.slug)
        expect(topics_data[2]).to eq_time(topic.bumped_at)
        expect(topics_data[3]).to eq_time(topic.updated_at)
      end

      it 'returns empty when the page is empty because the previous page is not full' do
        Fabricate(:topic)
        sitemap.name = '2'

        topics_data = sitemap.topics

        expect(topics_data).to be_empty
      end

      it "order topics by bumped_at asc" do
        topic_1 = Fabricate(:topic, bumped_at: 3.minute.ago)
        topic_2 = Fabricate(:topic, bumped_at: 1.minutes.ago)
        topic_3 = Fabricate(:topic, bumped_at: 20.minutes.ago)

        topic_ids = sitemap.topics.map { |td| td[0] }

        expect(topic_ids).to contain_exactly(topic_2.id, topic_1.id, topic_3.id)
      end

      it_behaves_like 'Excludes hidden and restricted topics'
    end

    context 'sitemap for recent topics' do
      let(:sitemap) do
        described_class.new(
          enabled: true, last_posted_at: 1.minute.ago, name: described_class::RECENT_SITEMAP_NAME
        )
      end

      it 'return topics that were bumped less than three days ago' do
        Fabricate(:topic, bumped_at: 4.days.ago)
        recent_topic = Fabricate(:topic, bumped_at: 2.days.ago, posts_count: 3)

        topics_data = sitemap.topics

        expect(topics_data.length).to eq(1)
        recent_topic_data = topics_data.first
        expect(recent_topic_data[0]).to eq(recent_topic.id)
        expect(recent_topic_data[1]).to eq(recent_topic.slug)
        expect(recent_topic_data[2]).to eq_time(recent_topic.bumped_at)
        expect(recent_topic_data[3]).to eq_time(recent_topic.updated_at)
        expect(recent_topic_data[4]).to eq(recent_topic.posts_count)
      end

      it_behaves_like 'Excludes hidden and restricted topics'
    end

    context 'news sitemap' do
      let(:sitemap) do
        described_class.new(
          enabled: true, last_posted_at: 1.minute.ago, name: described_class::NEWS_SITEMAP_NAME
        )
      end

      it 'returns topics that were bumped in the last 72 hours' do
        Fabricate(:topic, bumped_at: 73.hours.ago)
        recent_topic = Fabricate(:topic, bumped_at: 71.hours.ago)

        topics_data = sitemap.topics

        expect(topics_data.length).to eq(1)
        recent_topic_data = topics_data.first
        expect(recent_topic_data[0]).to eq(recent_topic.id)
        expect(recent_topic_data[1]).to eq(recent_topic.title)
        expect(recent_topic_data[2]).to eq(recent_topic.slug)
        expect(recent_topic_data[3]).to eq_time(recent_topic.updated_at)
      end

      it_behaves_like 'Excludes hidden and restricted topics'
    end
  end
end