# frozen_string_literal: true

require 'spec_helper'

RSpec.describe ApplicationHelper do
  include Devise::Test::ControllerHelpers

  describe 'current_controller?' do
    before do
      stub_controller_name('foo')
    end

    it 'returns true when controller matches argument' do
      expect(helper.current_controller?(:foo)).to be_truthy
    end

    it 'returns false when controller does not match argument' do
      expect(helper.current_controller?(:bar)).to be_falsey
    end

    it 'takes any number of arguments' do
      expect(helper.current_controller?(:baz, :bar)).to be_falsey
      expect(helper.current_controller?(:baz, :bar, :foo)).to be_truthy
    end

    context 'when namespaced' do
      before do
        stub_controller_path('bar/foo')
      end

      it 'returns true when controller matches argument' do
        expect(helper.current_controller?(:foo)).to be_truthy
      end

      it 'returns true when controller and namespace matches argument in path notation' do
        expect(helper.current_controller?('bar/foo')).to be_truthy
      end

      it 'returns false when namespace doesnt match' do
        expect(helper.current_controller?('foo/foo')).to be_falsey
      end
    end

    def stub_controller_name(value)
      allow(helper.controller).to receive(:controller_name).and_return(value)
    end

    def stub_controller_path(value)
      allow(helper.controller).to receive(:controller_path).and_return(value)
    end
  end

  describe 'current_action?' do
    before do
      stub_action_name('foo')
    end

    it 'returns true when action matches' do
      expect(helper.current_action?(:foo)).to be_truthy
    end

    it 'returns false when action does not match' do
      expect(helper.current_action?(:bar)).to be_falsey
    end

    it 'takes any number of arguments' do
      expect(helper.current_action?(:baz, :bar)).to be_falsey
      expect(helper.current_action?(:baz, :bar, :foo)).to be_truthy
    end

    def stub_action_name(value)
      allow(helper).to receive(:action_name).and_return(value)
    end
  end

  describe '#admin_section?' do
    context 'when controller is under the admin namespace' do
      before do
        allow(helper).to receive(:controller).and_return(Admin::UsersController.new)
      end

      it 'returns true' do
        expect(helper.admin_section?).to eq(true)
      end
    end

    context 'when controller is not under the admin namespace' do
      before do
        allow(helper).to receive(:controller).and_return(UsersController.new)
      end

      it 'returns true' do
        expect(helper.admin_section?).to eq(false)
      end
    end
  end

  describe 'simple_sanitize' do
    let(:a_tag) { '<a href="#">Foo</a>' }

    it 'allows the a tag' do
      expect(helper.simple_sanitize(a_tag)).to eq(a_tag)
    end

    it 'allows the span tag' do
      input = '<span class="foo">Bar</span>'
      expect(helper.simple_sanitize(input)).to eq(input)
    end

    it 'disallows other tags' do
      input = "<strike><b>#{a_tag}</b></strike>"
      expect(helper.simple_sanitize(input)).to eq(a_tag)
    end
  end

  describe 'time_ago_with_tooltip' do
    around do |example|
      Time.use_zone('UTC') { example.run }
    end

    def element(**arguments)
      @time = Time.zone.parse('2015-07-02 08:23')
      element = helper.time_ago_with_tooltip(@time, **arguments)

      Nokogiri::HTML::DocumentFragment.parse(element).first_element_child
    end

    it 'returns a time element' do
      expect(element.name).to eq 'time'
    end

    it 'includes the date string' do
      expect(element.text).to eq @time.strftime("%b %d, %Y")
    end

    it 'has a datetime attribute' do
      expect(element.attr('datetime')).to eq '2015-07-02T08:23:00Z'
    end

    it 'has a formatted title attribute' do
      expect(element.attr('title')).to eq 'Jul 2, 2015 8:23am'
    end

    it 'includes a default js-timeago class' do
      expect(element.attr('class')).to eq 'js-timeago'
    end

    it 'accepts a custom html_class' do
      expect(element(html_class: 'custom_class').attr('class')).to eq 'js-timeago custom_class'
    end

    it 'accepts a custom tooltip placement' do
      expect(element(placement: 'bottom').attr('data-placement')).to eq 'bottom'
    end

    it 'converts to Time' do
      expect { helper.time_ago_with_tooltip(Date.today) }.not_to raise_error
    end

    it 'add class for the short format' do
      timeago_element = element(short_format: 'short')

      expect(timeago_element.attr('class')).to eq 'js-short-timeago'
      expect(timeago_element.next_element).to eq nil
    end

    it 'returns blank if time is nil' do
      el = helper.time_ago_with_tooltip(nil)

      expect(el).to eq('')
      expect(el.html_safe).to eq('')
    end
  end

  describe '#active_when' do
    it { expect(helper.active_when(true)).to eq('active') }
    it { expect(helper.active_when(false)).to eq(nil) }
  end

  unless Gitlab.jh?
    describe '#promo_host' do
      subject { helper.promo_host }

      it 'returns the url' do
        is_expected.to eq('about.gitlab.com')
      end
    end
  end

  describe '#promo_url' do
    subject { helper.promo_url }

    it 'returns the url' do
      is_expected.to eq("https://#{helper.promo_host}")
    end

    it 'changes if promo_host changes' do
      allow(helper).to receive(:promo_host).and_return('foobar.baz')

      is_expected.to eq('https://foobar.baz')
    end
  end

  describe '#community_forum' do
    subject { helper.community_forum }

    it 'returns the url' do
      is_expected.to eq("https://forum.gitlab.com")
    end
  end

  describe '#support_url' do
    context 'when alternate support url is specified' do
      let(:alternate_url) { 'http://company.example.com/getting-help' }

      it 'returns the alternate support url' do
        stub_application_setting(help_page_support_url: alternate_url)

        expect(helper.support_url).to eq(alternate_url)
      end
    end

    context 'when alternate support url is not specified' do
      it 'builds the support url from the promo_url' do
        expect(helper.support_url).to eq(helper.promo_url + '/getting-help/')
      end
    end
  end

  describe '#instance_review_permitted?' do
    shared_examples 'returns expected result depending on instance setting' do |instance_setting, expected_result|
      before do
        allow(::Gitlab::CurrentSettings).to receive(:instance_review_permitted?).and_return(instance_setting)
        allow(helper).to receive(:current_user).and_return(current_user)
      end

      it { is_expected.to be(expected_result) }
    end

    subject { helper.instance_review_permitted? }

    context 'as admin' do
      let_it_be(:current_user) { build(:user, :admin) }

      context 'when admin mode setting is disabled', :do_not_mock_admin_mode_setting do
        it_behaves_like 'returns expected result depending on instance setting', true, true
        it_behaves_like 'returns expected result depending on instance setting', false, false
      end

      context 'when admin mode setting is enabled' do
        context 'when in admin mode', :enable_admin_mode do
          it_behaves_like 'returns expected result depending on instance setting', true, true
          it_behaves_like 'returns expected result depending on instance setting', false, false
        end

        context 'when not in admin mode' do
          it_behaves_like 'returns expected result depending on instance setting', true, false
          it_behaves_like 'returns expected result depending on instance setting', false, false
        end
      end
    end

    context 'as normal user' do
      let_it_be(:current_user) { build(:user) }

      it_behaves_like 'returns expected result depending on instance setting', true, false
      it_behaves_like 'returns expected result depending on instance setting', false, false
    end
  end

  describe '#locale_path' do
    it 'returns the locale path with an `_`' do
      Gitlab::I18n.with_locale('pt-BR') do
        expect(helper.locale_path).to include('assets/locale/pt_BR/app')
      end
    end
  end

  describe '#client_class_list' do
    context 'when browser or platform are unknown' do
      it 'returns string containing CSS classes representing fallbacks' do
        class_list = helper.client_class_list
        expect(class_list).to eq('gl-browser-generic gl-platform-other')
      end
    end

    context 'when browser and platform are known' do
      before do
        allow(helper.controller).to receive(:browser).and_return(::Browser.new('Google Chrome/Linux'))
      end

      it 'returns string containing CSS classes representing them' do
        class_list = helper.client_class_list
        expect(class_list).to eq('gl-browser-chrome gl-platform-linux')
      end
    end
  end

  describe '#client_js_flags' do
    context 'when browser or platform are unknown' do
      it 'returns map containing JS flags representing falllbacks' do
        flags_list = helper.client_js_flags
        expect(flags_list[:isGeneric]).to eq(true)
        expect(flags_list[:isOther]).to eq(true)
      end
    end

    context 'when browser and platform are known' do
      before do
        allow(helper.controller).to receive(:browser).and_return(::Browser.new('Google Chrome/Linux'))
      end

      it 'returns map containing JS flags representing client browser and platform' do
        flags_list = helper.client_js_flags
        expect(flags_list[:isChrome]).to eq(true)
        expect(flags_list[:isLinux]).to eq(true)
      end
    end
  end

  describe '#page_startup_api_calls' do
    it 'returns map containing JS Page Startup Calls' do
      helper.add_page_startup_api_call("testURL")

      startup_calls = helper.page_startup_api_calls

      expect(startup_calls["testURL"]).to eq({})
    end
  end

  describe '#autocomplete_data_sources' do
    context 'group' do
      let(:group) { create(:group) }
      let(:noteable_type) { Issue }

      it 'returns paths for autocomplete_sources_controller' do
        sources = helper.autocomplete_data_sources(group, noteable_type)
        expect(sources.keys).to include(:members, :issues, :mergeRequests, :labels, :milestones, :commands)
        sources.keys.each do |key|
          expect(sources[key]).not_to be_nil
        end
      end
    end

    context 'project' do
      let(:project) { create(:project) }
      let(:noteable_type) { Issue }

      it 'returns paths for autocomplete_sources_controller' do
        sources = helper.autocomplete_data_sources(project, noteable_type)
        expect(sources.keys).to match_array([:members, :issues, :mergeRequests, :labels, :milestones, :commands, :snippets, :contacts])
        sources.keys.each do |key|
          expect(sources[key]).not_to be_nil
        end
      end
    end
  end

  describe '#external_storage_url_or_path' do
    let(:project) { create(:project) }

    context 'when external storage is disabled' do
      it 'returns the passed path' do
        expect(helper.external_storage_url_or_path('/foo/bar', project)).to eq('/foo/bar')
      end
    end

    context 'when @snippet is set' do
      it 'returns the passed path' do
        snippet = create(:snippet)
        assign(:snippet, snippet)

        expect(helper.external_storage_url_or_path('/foo/bar', project)).to eq('/foo/bar')
      end
    end

    context 'when external storage is enabled' do
      let(:user) { create(:user, static_object_token: 'hunter1') }

      before do
        stub_application_setting(static_objects_external_storage_url: 'https://cdn.gitlab.com')
        allow(helper).to receive(:current_user).and_return(user)
      end

      it 'returns the external storage URL prepended to the path' do
        expect(helper.external_storage_url_or_path('/foo/bar', project)).to eq("https://cdn.gitlab.com/foo/bar?token=#{user.static_object_token}")
      end

      it 'preserves the path query parameters' do
        url = helper.external_storage_url_or_path('/foo/bar?unicode=1', project)

        expect(url).to eq("https://cdn.gitlab.com/foo/bar?token=#{user.static_object_token}&unicode=1")
      end

      context 'when project is public' do
        let(:project) { create(:project, :public) }

        it 'returns does not append a token parameter' do
          expect(helper.external_storage_url_or_path('/foo/bar', project)).to eq('https://cdn.gitlab.com/foo/bar')
        end
      end
    end
  end

  describe '#body_data' do
    context 'when @project is not set' do
      it 'does not include project data in the body data elements' do
        expect(helper.body_data).to eq(
          {
            page: 'application',
            page_type_id: nil,
            find_file: nil,
            group: nil
          }
        )
      end

      context 'when @group is set' do
        it 'sets group in the body data elements' do
          group = create(:group)

          assign(:group, group)

          expect(helper.body_data).to eq(
            {
              page: 'application',
              page_type_id: nil,
              find_file: nil,
              group: group.path
            }
          )
        end
      end
    end

    context 'when @project is set' do
      let_it_be(:project) { create(:project, :repository) }
      let_it_be(:user) { create(:user) }

      before do
        assign(:project, project)
        allow(helper).to receive(:current_user).and_return(nil)
      end

      it 'includes all possible body data elements and associates the project elements with project' do
        expect(helper).to receive(:can?).with(nil, :read_code, project)
        expect(helper.body_data).to eq(
          {
            page: 'application',
            page_type_id: nil,
            find_file: nil,
            group: nil,
            project_id: project.id,
            project: project.name,
            namespace_id: project.namespace.id
          }
        )
      end

      context 'when @project is owned by a group' do
        let_it_be(:project) { create(:project, :repository, group: create(:group)) }

        it 'includes all possible body data elements and associates the project elements with project' do
          expect(helper).to receive(:can?).with(nil, :read_code, project)
          expect(helper.body_data).to eq(
            {
              page: 'application',
              page_type_id: nil,
              find_file: nil,
              group: project.group.name,
              project_id: project.id,
              project: project.name,
              namespace_id: project.namespace.id
            }
          )
        end
      end

      context 'when controller is issues' do
        before do
          stub_controller_method(:controller_path, 'projects:issues')
        end

        context 'when params[:id] is present and the issue exsits and action_name is show' do
          it 'sets all project and id elements correctly related to the issue' do
            issue = create(:issue, project: project)
            stub_controller_method(:action_name, 'show')
            stub_controller_method(:params, { id: issue.id })

            expect(helper).to receive(:can?).with(nil, :read_code, project).and_return(false)
            expect(helper.body_data).to eq(
              {
                page: 'projects:issues:show',
                page_type_id: issue.id,
                find_file: nil,
                group: nil,
                project_id: issue.project.id,
                project: issue.project.name,
                namespace_id: issue.project.namespace.id
              }
            )
          end
        end
      end

      describe 'find_file attribute' do
        subject { helper.body_data[:find_file] }

        before do
          allow(helper).to receive(:current_user).and_return(user)
        end

        context 'when the project has no repository' do
          before do
            allow(project).to receive(:empty_repo?).and_return(true)
          end

          it { is_expected.to be_nil }
        end

        context 'when user cannot read_code for the project' do
          before do
            allow(helper).to receive(:can?).with(user, :read_code, project).and_return(false)
          end

          it { is_expected.to be_nil }
        end

        context 'when current_user has read_code permission' do
          it 'returns find_file with the default branch' do
            expect(helper).to receive(:can?).with(user, :read_code, project).and_return(true)
            expect(subject).to end_with(project.default_branch)
          end
        end
      end
    end

    def stub_controller_method(method_name, value)
      allow(helper.controller).to receive(method_name).and_return(value)
    end
  end

  describe '#gitlab_ui_form_for' do
    let_it_be(:user) { build(:user) }

    before do
      allow(helper).to receive(:users_path).and_return('/root')
      allow(helper).to receive(:form_for).and_call_original
    end

    it 'adds custom form builder to options and calls `form_for`' do
      options = { html: { class: 'foo-bar' } }
      expected_options = options.merge({ builder: ::Gitlab::FormBuilders::GitlabUiFormBuilder, url: '/root' })

      expect do |b|
        helper.gitlab_ui_form_for(user, options, &b)
      end.to yield_with_args(::Gitlab::FormBuilders::GitlabUiFormBuilder)
      expect(helper).to have_received(:form_for).with(user, expected_options)
    end
  end

  describe '#gitlab_ui_form_with' do
    let_it_be(:user) { build(:user) }

    before do
      allow(helper).to receive(:users_path).and_return('/root')
      allow(helper).to receive(:form_with).and_call_original
    end

    it 'adds custom form builder to options and calls `form_with`' do
      options = { model: user, html: { class: 'foo-bar' } }
      expected_options = options.merge({ builder: ::Gitlab::FormBuilders::GitlabUiFormBuilder })

      expect do |b|
        helper.gitlab_ui_form_with(**options, &b)
      end.to yield_with_args(::Gitlab::FormBuilders::GitlabUiFormBuilder)
      expect(helper).to have_received(:form_with).with(expected_options)
    end
  end

  describe '#page_class' do
    subject(:page_class) do
      helper.page_class.flatten
    end

    before do
      allow(helper).to receive(:current_user).and_return(nil)
    end

    it { is_expected.not_to include('logged-out-marketing-header') }
  end

  describe '#dispensable_render' do
    context 'when an error occurs in the template to be rendered' do
      before do
        allow(helper).to receive(:render).and_raise
      end

      it 'calls `track_and_raise_for_dev_exception`' do
        expect(Gitlab::ErrorTracking).to receive(:track_and_raise_for_dev_exception)
        helper.dispensable_render
      end

      context 'for development environment' do
        before do
          stub_rails_env('development')
        end

        it 'raises an error' do
          expect { helper.dispensable_render }.to raise_error(StandardError)
        end
      end

      context 'for production environments' do
        before do
          stub_rails_env('production')
        end

        it 'returns nil' do
          expect(helper.dispensable_render).to be_nil
        end
      end
    end

    context 'when no error occurs in the template to be rendered' do
      before do
        allow(helper).to receive(:render).and_return('foo')
      end

      it 'does not track or raise and returns the rendered content' do
        expect(Gitlab::ErrorTracking).not_to receive(:track_and_raise_for_dev_exception)
        expect(helper.dispensable_render).to eq('foo')
      end
    end
  end

  describe '#dispensable_render_if_exists' do
    context 'when an error occurs in the template to be rendered' do
      before do
        allow(helper).to receive(:render_if_exists).and_raise
      end

      it 'calls `track_and_raise_for_dev_exception`' do
        expect(Gitlab::ErrorTracking).to receive(:track_and_raise_for_dev_exception)
        helper.dispensable_render_if_exists
      end

      context 'for development environment' do
        before do
          stub_rails_env('development')
        end

        it 'raises an error' do
          expect { helper.dispensable_render_if_exists }.to raise_error(StandardError)
        end
      end

      context 'for production environments' do
        before do
          stub_rails_env('production')
        end

        it 'returns nil' do
          expect(helper.dispensable_render_if_exists).to be_nil
        end
      end
    end

    context 'when no error occurs in the template to be rendered' do
      before do
        allow(helper).to receive(:render_if_exists).and_return('foo')
      end

      it 'does not track or raise' do
        expect(Gitlab::ErrorTracking).not_to receive(:track_and_raise_for_dev_exception)
        expect(helper.dispensable_render_if_exists).to eq('foo')
      end
    end
  end

  describe 'stylesheet_link_tag_defer' do
    it 'uses print stylesheet by default' do
      expect(helper.stylesheet_link_tag_defer('test')).to eq( '<link rel="stylesheet" media="print" href="/stylesheets/test.css" />')
    end

    it 'uses regular stylesheet when no_startup_css param present' do
      allow(helper.controller).to receive(:params).and_return({ no_startup_css: '' })

      expect(helper.stylesheet_link_tag_defer('test')).to eq( '<link rel="stylesheet" media="screen" href="/stylesheets/test.css" />')
    end
  end

  describe '#use_new_fonts?' do
    subject { helper.use_new_fonts? }

    it { is_expected.to eq true }

    context 'when the feature flag is disabled' do
      before do
        stub_feature_flags(new_fonts: false)
      end

      it { is_expected.to eq false }

      context 'with special request param' do
        let(:request) { instance_double(ActionController::TestRequest, params: { new_fonts: true }) }

        before do
          allow(helper).to receive(:request).and_return(request)
        end

        it { is_expected.to eq true }
      end
    end
  end
end