require 'rails_helper'

RSpec.describe 'Sitemap entries API', type: :request do
  include_context 'Ainu locale'

  let(:user) { create(:user, :member) }

  it 'serves public resource counts with the default locale and page size' do
    create(:post)
    create(:tag, primary_name: 'sitemap_count_tag')

    get '/sitemap_entries'

    expect(response).to have_http_status(:ok)
    expect(json.fetch('page_size')).to eq(1_000)
    counts = json.fetch('resources').to_h { |entry|
      [entry.fetch('resource'), entry.fetch('count')]
    }
    expect(counts).to eq(
        'posts' => Post.count, 'tags' => Tag.count, 'deerjikists' => 0,
        'materials' => 0, 'descriptions' => 0, 'tag_groups' => 0, 'theatres' => 0)
  end

  it 'paginates public post IDs in ascending order without exposing post contents' do
    stub_const('SitemapEntriesController::PAGE_SIZE', 2)
    posts = create_list(:post, 3)

    get '/sitemap_entries/posts'
    expect(response).to have_http_status(:ok)
    expect(json).to eq('ids' => posts.first(2).map(&:id))

    get '/sitemap_entries/posts', params: { page: 2 }
    expect(response).to have_http_status(:ok)
    expect(json).to eq('ids' => [posts.last.id])

    get '/sitemap_entries/posts', params: { page: 3 }
    expect(response).to have_http_status(:not_found)
  end

  ['0', '-1', 'invalid', '1.5'].each do |page|
    it "rejects invalid sitemap page #{ page.inspect }" do
      get '/sitemap_entries/posts', params: { page: }

      expect(response).to have_http_status(:bad_request)
    end
  end

  it 'rejects unsupported resource names' do
    get '/sitemap_entries/users'

    expect(response).to have_http_status(:not_found)
  end

  it 'returns an empty first page for a resource without entries' do
    get '/sitemap_entries/posts'

    expect(response).to have_http_status(:ok)
    expect(json).to eq('ids' => [])
  end

  it 'rejects unregistered, deprecated and unsupported locales' do
    get '/sitemap_entries', params: { locale: 'ain-Kana' }
    expect(response).to have_http_status(:not_found)

    locale.update!(deprecated_at: Time.current)
    ['/sitemap_entries', '/sitemap_entries/posts'].each do |path|
      get path, params: { locale: 'ain-Kana' }
      expect(response).to have_http_status(:not_found)

      get path, params: { locale: 'en' }
      expect(response).to have_http_status(:not_found)
    end
  end

  it 'only lists live materials and theatres' do
    material = Material.create!(url: 'https://example.com/sitemap-material')
    discarded_material = Material.create!(url: 'https://example.com/sitemap-discarded')
    discarded_material.discard!
    theatre = create(:theatre)
    create(:theatre).discard!

    get '/sitemap_entries/materials'
    expect(response).to have_http_status(:ok)
    expect(json).to eq('ids' => [material.id])

    get '/sitemap_entries/theatres'
    expect(response).to have_http_status(:ok)
    expect(json).to eq('ids' => [theatre.id])
  end

  context 'with an active Ainu locale' do
    before { locale }

    it 'uses tag IDs and only includes deerjikists with linked accounts' do
      tagged = create(:tag, primary_name: 'sitemap_deer', category: :deerjikist)
      unlinked = create(:tag, primary_name: 'sitemap_unlinked', category: :deerjikist)
      Deerjikist.create!(tag: tagged, platform: 'youtube', code: 'sitemap-channel')
      Deerjikist.create!(tag: tagged, platform: 'nico', code: 'sitemap-nico')

      get '/sitemap_entries/tags', params: { locale: 'ain-Kana' }
      expect(response).to have_http_status(:ok)
      expect(json.fetch('ids')).to contain_exactly(tagged.id, unlinked.id)

      get '/sitemap_entries/deerjikists', params: { locale: 'ain-Kana' }
      expect(response).to have_http_status(:ok)
      expect(json).to eq('ids' => [tagged.id])
    end

    it 'lists description IDs for the requested language with a nonempty current version' do
      tag = create(:tag, primary_name: 'sitemap_description')
      japanese = TagDescriptionOperation.create!(
          Locale.nipponese, tag:, body: 'Japanese sitemap body', created_by_user: user)
      ainu = TagDescriptionOperation.create!(
          locale, tag:, body: 'Ainu sitemap body', created_by_user: user)
      unversioned_tag = create(:tag, primary_name: 'sitemap_unversioned')
      TagDescription.create!(tag: unversioned_tag, language_code: 'ain',
                             body: 'No revision', version_no: 1)
      empty_tag = create(:tag, primary_name: 'sitemap_empty')
      # Legacy empty bodies can exist even though the write service rejects them.
      empty = TagDescription.create!(tag: empty_tag, language_code: 'ain',
                                     body: '', version_no: 1)
      TagDescriptionVersion.create!(tag_id: empty_tag.id, language_code: 'ain',
                                    body: '', version_no: 1, event_type: 'create',
                                    created_by_user_id: user.id, created_at: Time.current)

      get '/sitemap_entries/descriptions', params: { locale: 'ain-Kana' }
      expect(response).to have_http_status(:ok)
      expect(json).to eq('ids' => [ainu.id])
      expect(json.fetch('ids')).not_to include(japanese.id, empty.id)

      get '/sitemap_entries/descriptions', params: { locale: 'ja' }
      expect(response).to have_http_status(:ok)
      expect(json).to eq('ids' => [japanese.id])

      get '/sitemap_entries', params: { locale: 'ain-Kana' }
      expect(response).to have_http_status(:ok)
      descriptions = json.fetch('resources').find { |entry|
        entry.fetch('resource') == 'descriptions'
      }
      expect(descriptions.fetch('count')).to eq(1)
    end

    it 'excludes groups without a revision matching the current version' do
      group = TagGroupOperation.create!(
          Locale.nipponese, name: 'Sitemap group', description: 'Group description',
          members: [], placements: [], actor: user)
      TagGroup.create!(name: 'Unversioned sitemap group', version_no: 1)

      get '/sitemap_entries/tag_groups', params: { locale: 'ain-Kana' }

      expect(response).to have_http_status(:ok)
      expect(json).to eq('ids' => [group.id])
    end
  end
end