# frozen_string_literal: true

require 'rails_helper'

describe 'Public' do
  let(:user)    { Fabricate(:user) }
  let(:scopes)  { 'read:statuses' }
  let(:token)   { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: scopes) }
  let(:headers) { { 'Authorization' => "Bearer #{token.token}" } }

  shared_examples 'a successful request to the public timeline' do
    it 'returns the expected statuses successfully', :aggregate_failures do
      subject

      expect(response).to have_http_status(200)
      expect(body_as_json.pluck(:id)).to match_array(expected_statuses.map { |status| status.id.to_s })
    end
  end

  describe 'GET /api/v1/timelines/public' do
    subject do
      get '/api/v1/timelines/public', headers: headers, params: params
    end

    let!(:private_status) { Fabricate(:status, visibility: :private) } # rubocop:disable RSpec/LetSetup
    let!(:local_status)   { Fabricate(:status, account: Fabricate.build(:account, domain: nil)) }
    let!(:remote_status)  { Fabricate(:status, account: Fabricate.build(:account, domain: 'example.com')) }
    let!(:media_status)   { Fabricate(:status, media_attachments: [Fabricate.build(:media_attachment)]) }

    let(:params) { {} }

    context 'when the instance allows public preview' do
      let(:expected_statuses) { [local_status, remote_status, media_status] }

      before do
        Setting.timeline_preview = true
      end

      context 'with an authorized user' do
        it_behaves_like 'a successful request to the public timeline'
      end

      context 'with an anonymous user' do
        let(:headers) { {} }

        it_behaves_like 'a successful request to the public timeline'
      end

      context 'with local param' do
        let(:params) { { local: true } }
        let(:expected_statuses) { [local_status, media_status] }

        it_behaves_like 'a successful request to the public timeline'
      end

      context 'with remote param' do
        let(:params) { { remote: true } }
        let(:expected_statuses) { [remote_status] }

        it_behaves_like 'a successful request to the public timeline'
      end

      context 'with only_media param' do
        let(:params) { { only_media: true } }
        let(:expected_statuses) { [media_status] }

        it_behaves_like 'a successful request to the public timeline'
      end

      context 'with limit param' do
        let(:params) { { limit: 1 } }

        it 'returns only the requested number of statuses', :aggregate_failures do
          subject

          expect(response).to have_http_status(200)
          expect(body_as_json.size).to eq(params[:limit])
        end

        it 'sets the correct pagination headers', :aggregate_failures do
          subject

          headers = response.headers['Link']

          expect(headers.find_link(%w(rel prev)).href).to eq(api_v1_timelines_public_url(limit: 1, min_id: media_status.id.to_s))
          expect(headers.find_link(%w(rel next)).href).to eq(api_v1_timelines_public_url(limit: 1, max_id: media_status.id.to_s))
        end
      end
    end

    context 'when the instance does not allow public preview' do
      before do
        Form::AdminSettings.new(timeline_preview: false).save
      end

      context 'with an authenticated user' do
        let(:expected_statuses) { [local_status, remote_status, media_status] }

        it_behaves_like 'a successful request to the public timeline'
      end

      context 'with an unauthenticated user' do
        let(:headers) { {} }

        it 'returns http unprocessable entity' do
          subject

          expect(response).to have_http_status(422)
        end
      end
    end
  end
end