# frozen_string_literal: true

require 'spec_helper'

RSpec.describe ApplicationSettings::UpdateService do
  include ExternalAuthorizationServiceHelpers

  let(:application_settings) { create(:application_setting) }
  let(:admin) { create(:user, :admin) }
  let(:params) { {} }

  subject { described_class.new(application_settings, admin, params) }

  before do
    # So the caching behaves like it would in production
    stub_env('IN_MEMORY_APPLICATION_SETTINGS', 'false')

    # Creating these settings first ensures they're used by other factories
    application_settings
  end

  describe 'updating terms' do
    context 'when the passed terms are blank' do
      let(:params) { { terms: '' } }

      it 'does not create terms' do
        expect { subject.execute }.not_to change { ApplicationSetting::Term.count }
      end
    end

    context 'when passing terms' do
      let(:params) { { terms: 'Be nice!  ' } }

      it 'creates the terms' do
        expect { subject.execute }.to change { ApplicationSetting::Term.count }.by(1)
      end

      it 'does not create terms if they are the same as the existing ones' do
        create(:term, terms: 'Be nice!')

        expect { subject.execute }.not_to change { ApplicationSetting::Term.count }
      end

      it 'updates terms if they already existed' do
        create(:term, terms: 'Other terms')

        subject.execute

        expect(application_settings.terms).to eq('Be nice!')
      end

      it 'only queries once when the terms are changed' do
        create(:term, terms: 'Other terms')
        expect(application_settings.terms).to eq('Other terms')

        subject.execute

        expect(application_settings.terms).to eq('Be nice!')
        expect { 2.times { application_settings.terms } }
          .not_to exceed_query_limit(0)
      end
    end
  end

  describe 'updating outbound_local_requests_whitelist' do
    context 'when params is blank' do
      let(:params) { {} }

      it 'does not add to allowlist' do
        expect { subject.execute }.not_to change {
          application_settings.outbound_local_requests_whitelist
        }
      end
    end

    context 'when param add_to_outbound_local_requests_whitelist contains values' do
      before do
        application_settings.outbound_local_requests_whitelist = ['127.0.0.1']
      end

      let(:params) { { add_to_outbound_local_requests_whitelist: ['example.com', ''] } }

      it 'adds to allowlist' do
        expect { subject.execute }.to change {
          application_settings.outbound_local_requests_whitelist
        }

        expect(application_settings.outbound_local_requests_whitelist).to contain_exactly(
          '127.0.0.1', 'example.com'
        )
      end
    end

    context 'when param outbound_local_requests_allowlist_raw is passed' do
      before do
        application_settings.outbound_local_requests_whitelist = ['127.0.0.1']
      end

      let(:params) { { outbound_local_requests_allowlist_raw: 'example.com;gitlab.com' } }

      it 'overwrites the existing allowlist' do
        expect { subject.execute }.to change {
          application_settings.outbound_local_requests_whitelist
        }

        expect(application_settings.outbound_local_requests_whitelist).to contain_exactly(
          'example.com', 'gitlab.com'
        )
      end
    end
  end

  describe 'markdown cache invalidators' do
    shared_examples 'invalidates markdown cache' do |attribute|
      let(:params) { attribute }

      it 'increments cache' do
        expect { subject.execute }.to change(application_settings, :local_markdown_version).by(1)
      end
    end

    it_behaves_like 'invalidates markdown cache', { asset_proxy_enabled: true }
    it_behaves_like 'invalidates markdown cache', { asset_proxy_url: 'http://test.com' }
    it_behaves_like 'invalidates markdown cache', { asset_proxy_secret_key: 'another secret' }
    it_behaves_like 'invalidates markdown cache', { asset_proxy_allowlist: ['domain.com'] }
    it_behaves_like 'invalidates markdown cache', { asset_proxy_whitelist: ['domain.com'] }

    context 'when also setting the local_markdown_version' do
      let(:params) { { asset_proxy_enabled: true, local_markdown_version: 12 } }

      it 'does not increment' do
        expect { subject.execute }.to change(application_settings, :local_markdown_version).to(12)
      end
    end

    context 'do not invalidate if value does not change' do
      let(:params) { { asset_proxy_enabled: true, asset_proxy_secret_key: 'secret', asset_proxy_url: 'http://test.com' } }

      it 'does not increment' do
        described_class.new(application_settings, admin, params).execute

        expect { described_class.new(application_settings, admin, params).execute }.not_to change(application_settings, :local_markdown_version)
      end
    end
  end

  describe 'performance bar settings' do
    using RSpec::Parameterized::TableSyntax

    where(:params_performance_bar_enabled,
          :params_performance_bar_allowed_group_path,
          :previous_performance_bar_allowed_group_id,
          :expected_performance_bar_allowed_group_id,
          :expected_valid) do
      true | '' | nil | nil | true
      true | '' | 42_000_000 | nil | true
      true | nil | nil | nil | true
      true | nil | 42_000_000 | nil | true
      true | 'foo' | nil | nil | false
      true | 'foo' | 42_000_000 | 42_000_000 | false
      true | 'group_a' | nil | 42_000_000 | true
      true | 'group_b' | 42_000_000 | 43_000_000 | true
      true | 'group_b/' | 42_000_000 | 43_000_000 | true
      true | 'group_a' | 42_000_000 | 42_000_000 | true
      false | '' | nil | nil | true
      false | '' | 42_000_000 | nil | true
      false | nil | nil | nil | true
      false | nil | 42_000_000 | nil | true
      false | 'foo' | nil | nil | true
      false | 'foo' | 42_000_000 | nil | true
      false | 'group_a' | nil | nil | true
      false | 'group_b' | 42_000_000 | nil | true
      false | 'group_a' | 42_000_000 | nil | true
      nil | '' | nil | nil | true
      nil | 'foo' | nil | nil | false
      nil | 'group_a' | nil | 42_000_000 | true
    end

    with_them do
      let(:params) do
        {
          performance_bar_allowed_group_path: params_performance_bar_allowed_group_path
        }.tap do |params_hash|
          # Treat nil in the table as missing
          unless params_performance_bar_enabled.nil?
            params_hash[:performance_bar_enabled] = params_performance_bar_enabled
          end
        end
      end

      before do
        if previous_performance_bar_allowed_group_id == 42_000_000 || params_performance_bar_allowed_group_path == 'group_a'
          create(:group, id: 42_000_000, path: 'group_a')
        end

        if expected_performance_bar_allowed_group_id == 43_000_000 || params_performance_bar_allowed_group_path == 'group_b'
          create(:group, id: 43_000_000, path: 'group_b')
        end

        application_settings.update!(performance_bar_allowed_group_id: previous_performance_bar_allowed_group_id)
      end

      it 'sets performance_bar_allowed_group_id when present and performance_bar_enabled == true' do
        expect(application_settings.performance_bar_allowed_group_id).to eq(previous_performance_bar_allowed_group_id)

        if previous_performance_bar_allowed_group_id != expected_performance_bar_allowed_group_id
          expect { subject.execute }
            .to change(application_settings, :performance_bar_allowed_group_id)
            .from(previous_performance_bar_allowed_group_id).to(expected_performance_bar_allowed_group_id)
        else
          expect { subject.execute }
            .not_to change(application_settings, :performance_bar_allowed_group_id)
        end
      end

      it 'adds errors to the model for invalid params' do
        expect(subject.execute).to eq(expected_valid)

        unless expected_valid
          expect(application_settings.errors[:performance_bar_allowed_group_id]).to be_present
        end
      end
    end

    context 'when :performance_bar_allowed_group_path is not present' do
      let(:group) { create(:group) }

      before do
        application_settings.update!(performance_bar_allowed_group_id: group.id)
      end

      it 'does not change the performance bar settings' do
        expect { subject.execute }
          .not_to change(application_settings, :performance_bar_allowed_group_id)
      end
    end

    context 'when :performance_bar_enabled is not present' do
      let(:group) { create(:group) }
      let(:params) { { performance_bar_allowed_group_path: group.full_path } }

      it 'implicitly defaults to true' do
        expect { subject.execute }
          .to change(application_settings, :performance_bar_allowed_group_id)
          .from(nil).to(group.id)
      end
    end
  end

  context 'when external authorization is enabled' do
    before do
      enable_external_authorization_service_check
    end

    it 'does not validate labels if external authorization gets disabled' do
      expect_any_instance_of(described_class).not_to receive(:validate_classification_label)

      described_class.new(application_settings, admin, { external_authorization_service_enabled: false }).execute
    end

    it 'does validate labels if external authorization gets enabled' do
      expect_any_instance_of(described_class).to receive(:validate_classification_label)

      described_class.new(application_settings, admin, { external_authorization_service_enabled: true }).execute
    end

    it 'does validate labels if external authorization is left unchanged' do
      expect_any_instance_of(described_class).to receive(:validate_classification_label)

      described_class.new(application_settings, admin, { external_authorization_service_default_label: 'new-label' }).execute
    end

    it 'does not save the settings with an error if the service denies access' do
      expect(::Gitlab::ExternalAuthorization)
        .to receive(:access_allowed?).with(admin, 'new-label') { false }

      described_class.new(application_settings, admin, { external_authorization_service_default_label: 'new-label' }).execute

      expect(application_settings.errors[:external_authorization_service_default_label]).to be_present
    end

    it 'saves the setting when the user has access to the label' do
      expect(::Gitlab::ExternalAuthorization)
        .to receive(:access_allowed?).with(admin, 'new-label') { true }

      described_class.new(application_settings, admin, { external_authorization_service_default_label: 'new-label' }).execute

      # Read the attribute directly to avoid the stub from
      # `enable_external_authorization_service_check`
      expect(application_settings[:external_authorization_service_default_label]).to eq('new-label')
    end

    it 'does not validate the label if it was not passed' do
      expect(::Gitlab::ExternalAuthorization)
        .not_to receive(:access_allowed?)

      described_class.new(application_settings, admin, { home_page_url: 'http://foo.bar' }).execute
    end
  end

  context 'when raw_blob_request_limit is passsed' do
    let(:params) do
      {
        raw_blob_request_limit: 600
      }
    end

    it 'updates raw_blob_request_limit value' do
      subject.execute

      application_settings.reload

      expect(application_settings.raw_blob_request_limit).to eq(600)
    end
  end

  context 'when protected path settings are passed' do
    let(:params) do
      {
        throttle_protected_paths_enabled: 1,
        throttle_protected_paths_period_in_seconds: 600,
        throttle_protected_paths_requests_per_period: 100,
        protected_paths_raw: "/users/password\r\n/users/sign_in\r\n"
      }
    end

    it 'updates protected path settings' do
      subject.execute

      application_settings.reload

      expect(application_settings.throttle_protected_paths_enabled).to be_truthy
      expect(application_settings.throttle_protected_paths_period_in_seconds).to eq(600)
      expect(application_settings.throttle_protected_paths_requests_per_period).to eq(100)
      expect(application_settings.protected_paths).to eq(['/users/password', '/users/sign_in'])
    end
  end

  context 'when general rate limits are passed' do
    let(:params) do
      {
        throttle_authenticated_api_enabled: true,
        throttle_authenticated_api_period_in_seconds: 10,
        throttle_authenticated_api_requests_per_period: 20,
        throttle_authenticated_web_enabled: true,
        throttle_authenticated_web_period_in_seconds: 30,
        throttle_authenticated_web_requests_per_period: 40,
        throttle_unauthenticated_api_enabled: true,
        throttle_unauthenticated_api_period_in_seconds: 50,
        throttle_unauthenticated_api_requests_per_period: 60,
        throttle_unauthenticated_enabled: true,
        throttle_unauthenticated_period_in_seconds: 50,
        throttle_unauthenticated_requests_per_period: 60
      }
    end

    it 'updates general throttle settings' do
      subject.execute

      expect(application_settings.reload).to have_attributes(params)
    end
  end

  context 'when package registry rate limits are passed' do
    let(:params) do
      {
        throttle_unauthenticated_packages_api_enabled: 1,
        throttle_unauthenticated_packages_api_period_in_seconds: 500,
        throttle_unauthenticated_packages_api_requests_per_period: 20,
        throttle_authenticated_packages_api_enabled: 1,
        throttle_authenticated_packages_api_period_in_seconds: 600,
        throttle_authenticated_packages_api_requests_per_period: 10
      }
    end

    it 'updates package registry throttle settings' do
      subject.execute

      application_settings.reload

      expect(application_settings.throttle_unauthenticated_packages_api_enabled).to be_truthy
      expect(application_settings.throttle_unauthenticated_packages_api_period_in_seconds).to eq(500)
      expect(application_settings.throttle_unauthenticated_packages_api_requests_per_period).to eq(20)
      expect(application_settings.throttle_authenticated_packages_api_enabled).to be_truthy
      expect(application_settings.throttle_authenticated_packages_api_period_in_seconds).to eq(600)
      expect(application_settings.throttle_authenticated_packages_api_requests_per_period).to eq(10)
    end
  end

  context 'when files API rate limits are passed' do
    let(:params) do
      {
        throttle_unauthenticated_files_api_enabled: 1,
        throttle_unauthenticated_files_api_period_in_seconds: 500,
        throttle_unauthenticated_files_api_requests_per_period: 20,
        throttle_authenticated_files_api_enabled: 1,
        throttle_authenticated_files_api_period_in_seconds: 600,
        throttle_authenticated_files_api_requests_per_period: 10
      }
    end

    it 'updates files API throttle settings' do
      subject.execute

      application_settings.reload

      expect(application_settings.throttle_unauthenticated_files_api_enabled).to be_truthy
      expect(application_settings.throttle_unauthenticated_files_api_period_in_seconds).to eq(500)
      expect(application_settings.throttle_unauthenticated_files_api_requests_per_period).to eq(20)
      expect(application_settings.throttle_authenticated_files_api_enabled).to be_truthy
      expect(application_settings.throttle_authenticated_files_api_period_in_seconds).to eq(600)
      expect(application_settings.throttle_authenticated_files_api_requests_per_period).to eq(10)
    end
  end

  context 'when deprecated API rate limits are passed' do
    let(:params) do
      {
        throttle_unauthenticated_deprecated_api_enabled: 1,
        throttle_unauthenticated_deprecated_api_period_in_seconds: 500,
        throttle_unauthenticated_deprecated_api_requests_per_period: 20,
        throttle_authenticated_deprecated_api_enabled: 1,
        throttle_authenticated_deprecated_api_period_in_seconds: 600,
        throttle_authenticated_deprecated_api_requests_per_period: 10
      }
    end

    it 'updates deprecated API throttle settings' do
      subject.execute

      application_settings.reload

      expect(application_settings.throttle_unauthenticated_deprecated_api_enabled).to be_truthy
      expect(application_settings.throttle_unauthenticated_deprecated_api_period_in_seconds).to eq(500)
      expect(application_settings.throttle_unauthenticated_deprecated_api_requests_per_period).to eq(20)
      expect(application_settings.throttle_authenticated_deprecated_api_enabled).to be_truthy
      expect(application_settings.throttle_authenticated_deprecated_api_period_in_seconds).to eq(600)
      expect(application_settings.throttle_authenticated_deprecated_api_requests_per_period).to eq(10)
    end
  end

  context 'when git lfs rate limits are passed' do
    let(:params) do
      {
        throttle_authenticated_git_lfs_enabled: 1,
        throttle_authenticated_git_lfs_period_in_seconds: 600,
        throttle_authenticated_git_lfs_requests_per_period: 10
      }
    end

    it 'updates git lfs throttle settings' do
      subject.execute

      application_settings.reload

      expect(application_settings.throttle_authenticated_git_lfs_enabled).to be_truthy
      expect(application_settings.throttle_authenticated_git_lfs_period_in_seconds).to eq(600)
      expect(application_settings.throttle_authenticated_git_lfs_requests_per_period).to eq(10)
    end
  end

  context 'when issues_create_limit is passed' do
    let(:params) do
      {
        issues_create_limit: 600
      }
    end

    it 'updates issues_create_limit value' do
      subject.execute

      application_settings.reload

      expect(application_settings.issues_create_limit).to eq(600)
    end
  end

  context 'when users_get_by_id_limit and users_get_by_id_limit_allowlist_raw are passed' do
    let(:params) do
      {
        users_get_by_id_limit: 456,
        users_get_by_id_limit_allowlist_raw: 'someone, someone_else'
      }
    end

    it 'updates users_get_by_id_limit and users_get_by_id_limit_allowlist value' do
      subject.execute

      application_settings.reload

      expect(application_settings.users_get_by_id_limit).to eq(456)
      expect(application_settings.users_get_by_id_limit_allowlist).to eq(%w[someone someone_else])
    end
  end

  context 'when require_admin_approval_after_user_signup changes' do
    context 'when it goes from enabled to disabled' do
      let(:params) { { require_admin_approval_after_user_signup: false } }

      it 'calls ApproveBlockedPendingApprovalUsersWorker' do
        expect(ApproveBlockedPendingApprovalUsersWorker).to receive(:perform_async)

        subject.execute
      end
    end

    context 'when it goes from disabled to enabled' do
      let(:params) { { require_admin_approval_after_user_signup: true } }

      it 'does not call ApproveBlockedPendingApprovalUsersWorker' do
        application_settings.update!(require_admin_approval_after_user_signup: false)

        expect(ApproveBlockedPendingApprovalUsersWorker).not_to receive(:perform_async)

        subject.execute
      end
    end
  end
end