# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'Merge request > User sees pipelines triggered by merge request', :js, feature_category: :code_review_workflow do
  include ProjectForksHelper
  include TestReportsHelper

  let(:project) { create(:project, :public, :repository) }
  let(:user) { project.creator }

  let(:config) do
    {
      build: {
        script: 'build'
      },
      test: {
        script: 'test',
        only: ['merge_requests']
      },
      deploy: {
        script: 'deploy',
        except: ['merge_requests']
      }
    }
  end

  let(:expected_detached_mr_tag) { 'merge request' }

  before do
    # rubocop:disable RSpec/AvoidConditionalStatements
    stub_licensed_features(merge_request_approvers: true) if Gitlab.ee?
    # rubocop:enable RSpec/AvoidConditionalStatements

    stub_application_setting(auto_devops_enabled: false)
    stub_ci_pipeline_yaml_file(YAML.dump(config))
    project.add_maintainer(user)
    sign_in(user)
  end

  # rubocop:disable RSpec/AvoidConditionalStatements
  def mr_widget_title
    if Gitlab.ee?
      'to be merged automatically when all merge checks pass'
    else
      'to be merged automatically when the pipeline succeeds'
    end
  end
  # rubocop:enable RSpec/AvoidConditionalStatements

  context 'with feature flag `mr_pipelines_graphql turned off`' do
    before do
      stub_feature_flags(mr_pipelines_graphql: false)
    end

    context 'when a user created a merge request in the parent project' do
      let!(:merge_request) do
        create(
          :merge_request,
          source_project: project,
          target_project: project,
          source_branch: 'feature',
          target_branch: 'master'
        )
      end

      let!(:push_pipeline) do
        Ci::CreatePipelineService.new(project, user, ref: 'feature')
          .execute(:push)
          .payload
      end

      let!(:detached_merge_request_pipeline) do
        Ci::CreatePipelineService.new(project, user, ref: 'feature')
          .execute(:merge_request_event, merge_request: merge_request)
          .payload
      end

      before do
        visit project_merge_request_path(project, merge_request)

        page.within('.merge-request-tabs') do
          click_link('Pipelines')
        end
      end

      it 'sees branch pipelines and detached merge request pipelines in correct order' do
        page.within('.ci-table') do
          expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Created', count: 2)
          expect(first('[data-testid="pipeline-url-link"]')).to have_content("##{detached_merge_request_pipeline.id}")
        end
      end

      it 'sees the latest detached merge request pipeline as the head pipeline', :sidekiq_might_not_need_inline do
        click_link "Overview"

        page.within('.ci-widget-content') do
          expect(page).to have_content("##{detached_merge_request_pipeline.id}")
        end
      end

      context 'when a user updated a merge request in the parent project', :sidekiq_might_not_need_inline do
        let!(:push_pipeline_2) do
          Ci::CreatePipelineService.new(project, user, ref: 'feature')
            .execute(:push)
            .payload
        end

        let!(:detached_merge_request_pipeline_2) do
          Ci::CreatePipelineService.new(project, user, ref: 'feature')
            .execute(:merge_request_event, merge_request: merge_request)
            .payload
        end

        before do
          visit project_merge_request_path(project, merge_request)

          page.within('.merge-request-tabs') do
            click_link('Pipelines')
          end
        end

        it 'sees branch pipelines and detached merge request pipelines in correct order' do
          page.within('.ci-table') do
            expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Pending', count: 4)

            expect(all('[data-testid="pipeline-url-link"]')[0])
              .to have_content("##{detached_merge_request_pipeline_2.id}")

            expect(all('[data-testid="pipeline-url-link"]')[1])
              .to have_content("##{detached_merge_request_pipeline.id}")

            expect(all('[data-testid="pipeline-url-link"]')[2])
              .to have_content("##{push_pipeline_2.id}")

            expect(all('[data-testid="pipeline-url-link"]')[3])
              .to have_content("##{push_pipeline.id}")
          end
        end

        it 'sees detached tag for detached merge request pipelines' do
          page.within('.ci-table') do
            expect(all('.pipeline-tags')[0])
              .to have_content(expected_detached_mr_tag)

            expect(all('.pipeline-tags')[1])
              .to have_content(expected_detached_mr_tag)

            expect(all('.pipeline-tags')[2])
              .not_to have_content(expected_detached_mr_tag)

            expect(all('.pipeline-tags')[3])
              .not_to have_content(expected_detached_mr_tag)
          end
        end

        it 'sees the latest detached merge request pipeline as the head pipeline' do
          click_link 'Overview'

          page.within('.ci-widget-content') do
            expect(page).to have_content("##{detached_merge_request_pipeline_2.id}")
          end
        end
      end

      context 'when a user created a merge request in the parent project' do
        before do
          visit project_merge_request_path(project, merge_request)

          page.within('.merge-request-tabs') do
            click_link('Pipelines')
          end
        end

        context 'when a user merges a merge request in the parent project', :sidekiq_might_not_need_inline do
          before do
            click_link 'Overview'
            click_button 'Set to auto-merge'

            wait_for_requests
          end

          context 'when detached merge request pipeline is pending' do
            it 'waits the head pipeline' do
              expect(page).to have_content mr_widget_title
              expect(page).to have_button('Cancel auto-merge')
            end
          end

          context 'when branch pipeline succeeds' do
            before do
              click_link 'Overview'
              push_pipeline.reload.succeed!

              wait_for_requests
            end

            it 'waits the head pipeline' do
              expect(page).to have_content mr_widget_title
              expect(page).to have_button('Cancel auto-merge')
            end
          end
        end
      end

      context 'when there are no `merge_requests` keyword in .gitlab-ci.yml' do
        let(:config) do
          {
            build: {
              script: 'build'
            },
            test: {
              script: 'test'
            },
            deploy: {
              script: 'deploy'
            }
          }
        end

        it 'sees a branch pipeline in pipeline tab' do
          page.within('.ci-table') do
            expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Created', count: 1)
            expect(first('[data-testid="pipeline-url-link"]')).to have_content("##{push_pipeline.id}")
          end
        end

        it 'sees the latest branch pipeline as the head pipeline', :sidekiq_might_not_need_inline do
          click_link 'Overview'

          page.within('.ci-widget-content') do
            expect(page).to have_content("##{push_pipeline.id}")
          end
        end
      end
    end

    context 'when a user created a merge request from a forked project to the parent project', :sidekiq_might_not_need_inline do
      let(:merge_request) do
        create(
          :merge_request,
          source_project: forked_project,
          target_project: project,
          source_branch: 'feature',
          target_branch: 'master'
        )
      end

      let!(:push_pipeline) do
        Ci::CreatePipelineService.new(forked_project, user2, ref: 'feature')
          .execute(:push)
          .payload
      end

      let!(:detached_merge_request_pipeline) do
        Ci::CreatePipelineService.new(forked_project, user2, ref: 'feature')
          .execute(:merge_request_event, merge_request: merge_request)
          .payload
      end

      let(:forked_project) { fork_project(project, user2, repository: true) }
      let(:user2) { create(:user) }

      before do
        forked_project.add_maintainer(user2)

        visit project_merge_request_path(project, merge_request)

        page.within('.merge-request-tabs') do
          click_link('Pipelines')
        end
      end

      it 'sees branch pipelines and detached merge request pipelines in correct order' do
        page.within('.ci-table') do
          expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Pending', count: 2)
          expect(first('[data-testid="pipeline-url-link"]')).to have_content("##{detached_merge_request_pipeline.id}")
        end
      end

      it 'sees the latest detached merge request pipeline as the head pipeline' do
        click_link "Overview"

        page.within('.ci-widget-content') do
          expect(page).to have_content("##{detached_merge_request_pipeline.id}")
        end
      end

      it 'sees pipeline list in forked project' do
        visit project_pipelines_path(forked_project)

        expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Pending', count: 2)
      end

      context 'when a user updated a merge request from a forked project to the parent project' do
        let!(:push_pipeline_2) do
          Ci::CreatePipelineService.new(forked_project, user2, ref: 'feature')
            .execute(:push)
            .payload
        end

        let!(:detached_merge_request_pipeline_2) do
          Ci::CreatePipelineService.new(forked_project, user2, ref: 'feature')
            .execute(:merge_request_event, merge_request: merge_request)
            .payload
        end

        before do
          visit project_merge_request_path(project, merge_request)

          page.within('.merge-request-tabs') do
            click_link('Pipelines')
          end
        end

        it 'sees branch pipelines and detached merge request pipelines in correct order' do
          page.within('.ci-table') do
            expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Pending', count: 4)

            expect(all('[data-testid="pipeline-url-link"]')[0])
              .to have_content("##{detached_merge_request_pipeline_2.id}")

            expect(all('[data-testid="pipeline-url-link"]')[1])
              .to have_content("##{detached_merge_request_pipeline.id}")

            expect(all('[data-testid="pipeline-url-link"]')[2])
              .to have_content("##{push_pipeline_2.id}")

            expect(all('[data-testid="pipeline-url-link"]')[3])
              .to have_content("##{push_pipeline.id}")
          end
        end

        it 'sees detached tag for detached merge request pipelines' do
          page.within('.ci-table') do
            expect(all('.pipeline-tags')[0])
              .to have_content(expected_detached_mr_tag)

            expect(all('.pipeline-tags')[1])
              .to have_content(expected_detached_mr_tag)

            expect(all('.pipeline-tags')[2])
              .not_to have_content(expected_detached_mr_tag)

            expect(all('.pipeline-tags')[3])
              .not_to have_content(expected_detached_mr_tag)
          end
        end

        it 'sees the latest detached merge request pipeline as the head pipeline' do
          click_link "Overview"

          page.within('.ci-widget-content') do
            expect(page).to have_content("##{detached_merge_request_pipeline_2.id}")
          end
        end

        it 'sees pipeline list in forked project' do
          visit project_pipelines_path(forked_project)

          expect(page).to have_selector('[data-testid="ci-badge-link"]', text: 'Pending', count: 4)
        end
      end

      context 'when the latest pipeline is running in the parent project' do
        before do
          create(:ci_pipeline,
            source: :merge_request_event,
            project: project,
            ref: 'feature',
            sha: merge_request.diff_head_sha,
            user: user,
            merge_request: merge_request,
            status: :running)
          merge_request.update_head_pipeline
        end

        context 'when the previous pipeline failed in the fork project' do
          before do
            detached_merge_request_pipeline.reload.drop!
          end

          context 'when the parent project enables pipeline must succeed' do
            before do
              project.update!(only_allow_merge_if_pipeline_succeeds: true)
            end

            it 'shows Set to auto-merge button' do
              visit project_merge_request_path(project, merge_request)

              expect(page).to have_button('Set to auto-merge')
            end
          end
        end
      end

      context 'when a user merges a merge request from a forked project to the parent project' do
        before do
          click_link("Overview")

          click_button 'Set to auto-merge'

          wait_for_requests
        end

        context 'when detached merge request pipeline is pending' do
          it 'waits the head pipeline' do
            expect(page).to have_content mr_widget_title
            expect(page).to have_button('Cancel auto-merge')
          end
        end

        context 'when detached merge request pipeline succeeds' do
          before do
            detached_merge_request_pipeline.reload.succeed!

            wait_for_requests
          end

          it 'merges the merge request' do
            expect(page).to have_content('Merged by')
            expect(page).to have_button('Revert')
          end
        end

        context 'when branch pipeline succeeds' do
          before do
            push_pipeline.reload.succeed!

            wait_for_requests
          end

          it 'waits the head pipeline' do
            expect(page).to have_content mr_widget_title
            expect(page).to have_button('Cancel auto-merge')
          end
        end
      end
    end
  end
end