Add empty state inside pipeline editor section

This adds an empty section with no CTA inside the pipeline
editor if there is no file to edit. At a later date, we
are going to add the option to start working even without an
existing file.

app/assets/javascripts/pipeline_editor/components/ui/pipeline_editor_empty_state.vue

+<script>
+import { GlSprintf } from '@gitlab/ui';
+import { __ } from '~/locale';
+
+export default {
+  components: {
+    GlSprintf,
+  },
+  i18n: {
+    title: __('Optimize your workflow with CI/CD Pipelines'),
+    body: __(
+      'Create a new %{codeStart}.gitlab-ci.yml%{codeEnd} file at the root of the repository to get started.',
+    ),
+  },
+  inject: {
+    emptyStateIllustrationPath: {
+      default: '',
+    },
+  },
+};
+</script>
+<template>
+  <div class="gl-display-flex gl-flex-direction-column gl-align-items-center gl-mt-11">
+    <img :src="emptyStateIllustrationPath" />
+    <h1 class="gl-font-size-h1">{{ $options.i18n.title }}</h1>
+    <p>
+      <gl-sprintf :message="$options.i18n.body">
+        <template #code="{ content }">
+          <code>{{ content }}</code>
+        </template>
+      </gl-sprintf>
+    </p>
+  </div>
+</template>

app/assets/javascripts/pipeline_editor/constants.js

@@ -5,7 +5,6 @@ export const COMMIT_FAILURE = 'COMMIT_FAILURE';
 export const COMMIT_SUCCESS = 'COMMIT_SUCCESS';
 
 export const DEFAULT_FAILURE = 'DEFAULT_FAILURE';
-export const LOAD_FAILURE_NO_FILE = 'LOAD_FAILURE_NO_FILE';
 export const LOAD_FAILURE_UNKNOWN = 'LOAD_FAILURE_UNKNOWN';
 
 export const CREATE_TAB = 'CREATE_TAB';

app/assets/javascripts/pipeline_editor/index.js

@@ -25,6 +25,7 @@ export const initPipelineEditor = (selector = '#js-pipeline-editor') => {
     // Add to provide/inject API for static values
     ciConfigPath,
     defaultBranch,
+    emptyStateIllustrationPath,
     lintHelpPagePath,
     newMergeRequestPath,
     projectFullPath,
@@ -51,6 +52,7 @@ export const initPipelineEditor = (selector = '#js-pipeline-editor') => {
     provide: {
       ciConfigPath,
       defaultBranch,
+      emptyStateIllustrationPath,
       lintHelpPagePath,
       newMergeRequestPath,
       projectFullPath,

app/assets/javascripts/pipeline_editor/pipeline_editor_app.vue

 <script>
 import { GlAlert, GlLoadingIcon } from '@gitlab/ui';
 import httpStatusCodes from '~/lib/utils/http_status';
-import { __, s__, sprintf } from '~/locale';
+import { __, s__ } from '~/locale';
 
 import { unwrapStagesWithNeeds } from '~/pipelines/components/unwrapping_utils';
 import ConfirmUnsavedChangesDialog from './components/ui/confirm_unsaved_changes_dialog.vue';
-import {
-  COMMIT_FAILURE,
-  COMMIT_SUCCESS,
-  DEFAULT_FAILURE,
-  LOAD_FAILURE_NO_FILE,
-  LOAD_FAILURE_UNKNOWN,
-} from './constants';
+import PipelineEditorEmptyState from './components/ui/pipeline_editor_empty_state.vue';
+import { COMMIT_FAILURE, COMMIT_SUCCESS, DEFAULT_FAILURE, LOAD_FAILURE_UNKNOWN } from './constants';
 import getBlobContent from './graphql/queries/blob_content.graphql';
 import getCiConfigData from './graphql/queries/ci_config.graphql';
 import PipelineEditorHome from './pipeline_editor_home.vue';
@@ -21,6 +16,7 @@ export default {
     ConfirmUnsavedChangesDialog,
     GlAlert,
     GlLoadingIcon,
+    PipelineEditorEmptyState,
     PipelineEditorHome,
   },
   inject: {
@@ -40,6 +36,7 @@ export default {
       // Success and failure state
       failureType: null,
       failureReasons: [],
+      hasNoCiConfigFile: false,
       initialCiFileContent: '',
       lastCommittedContent: '',
       currentCiFileContent: '',
@@ -102,21 +99,11 @@ export default {
     isBlobContentLoading() {
       return this.$apollo.queries.initialCiFileContent.loading;
     },
-    isBlobContentError() {
-      return this.failureType === LOAD_FAILURE_NO_FILE;
-    },
     isCiConfigDataLoading() {
       return this.$apollo.queries.ciConfigData.loading;
     },
     failure() {
       switch (this.failureType) {
-        case LOAD_FAILURE_NO_FILE:
-          return {
-            text: sprintf(this.$options.errorTexts[LOAD_FAILURE_NO_FILE], {
-              filePath: this.ciConfigPath,
-            }),
-            variant: 'danger',
-          };
         case LOAD_FAILURE_UNKNOWN:
           return {
             text: this.$options.errorTexts[LOAD_FAILURE_UNKNOWN],
@@ -154,9 +141,6 @@ export default {
   errorTexts: {
     [COMMIT_FAILURE]: s__('Pipelines|The GitLab CI configuration could not be updated.'),
     [DEFAULT_FAILURE]: __('Something went wrong on our end.'),
-    [LOAD_FAILURE_NO_FILE]: s__(
-      'Pipelines|There is no %{filePath} file in this repository, please add one and visit the Pipeline Editor again.',
-    ),
     [LOAD_FAILURE_UNKNOWN]: s__('Pipelines|The CI configuration was not loaded, please try again.'),
   },
   successTexts: {
@@ -173,7 +157,7 @@ export default {
         response?.status === httpStatusCodes.NOT_FOUND ||
         response?.status === httpStatusCodes.BAD_REQUEST
       ) {
-        this.reportFailure(LOAD_FAILURE_NO_FILE);
+        this.hasNoCiConfigFile = true;
       } else {
         this.reportFailure(LOAD_FAILURE_UNKNOWN);
       }
@@ -216,7 +200,10 @@ export default {
 </script>
 
 <template>
-  <div class="gl-mt-4">
+  <div class="gl-mt-4 gl-relative">
+    <gl-loading-icon v-if="isBlobContentLoading" size="lg" class="gl-m-3" />
+    <pipeline-editor-empty-state v-else-if="hasNoCiConfigFile" />
+    <div v-else>
       <gl-alert v-if="showSuccessAlert" :variant="success.variant" @dismiss="dismissSuccess">
         {{ success.text }}
       </gl-alert>
@@ -226,8 +213,6 @@ export default {
           <li v-for="reason in failureReasons" :key="reason">{{ reason }}</li>
         </ul>
       </gl-alert>
-    <gl-loading-icon v-if="isBlobContentLoading" size="lg" class="gl-m-3" />
-    <div v-else-if="!isBlobContentError" class="gl-mt-4">
       <pipeline-editor-home
         :is-ci-config-data-loading="isCiConfigDataLoading"
         :ci-config-data="ciConfigData"
@@ -237,7 +222,7 @@ export default {
         @showError="showErrorAlert"
         @updateCiConfig="updateCiConfig"
       />
-    </div>
       <confirm-unsaved-changes-dialog :has-unsaved-changes="hasUnsavedChanges" />
     </div>
+  </div>
 </template>

app/views/projects/ci/pipeline_editor/show.html.haml

 - page_title s_('Pipelines|Pipeline Editor')
 
 #js-pipeline-editor{ data: { "ci-config-path": @project.ci_config_path_or_default,
+  "commit-sha" => @project.commit ? @project.commit.sha : '',
+  "default-branch" => @project.default_branch,
+  "empty-state-illustration-path" => image_path('illustrations/empty-state/empty-dag-md.svg'),
+  "lint-help-page-path" => help_page_path('ci/lint', anchor: 'validate-basic-logic-and-syntax'),
+  "new-merge-request-path" => namespace_project_new_merge_request_path,
   "project-path" => @project.path,
   "project-full-path" => @project.full_path,
   "project-namespace" => @project.namespace.full_path,
-  "default-branch" => @project.default_branch,
-  "commit-sha" => @project.commit ? @project.commit.sha : '',
-  "new-merge-request-path" => namespace_project_new_merge_request_path,
-  "lint-help-page-path" => help_page_path('ci/lint', anchor: 'validate-basic-logic-and-syntax'),
   "yml-help-page-path" => help_page_path('ci/yaml/README'),
 } }

changelogs/unreleased/pipeline-editor-empty-state.yml

+---
+title: Add empty state to pipeline editor section
+merge_request: 55227
+author:
+type: changed

locale/gitlab.pot

@@ -8551,6 +8551,9 @@ msgstr ""
 msgid "Create a merge request"
 msgstr ""
 
+msgid "Create a new %{codeStart}.gitlab-ci.yml%{codeEnd} file at the root of the repository to get started."
+msgstr ""
+
 msgid "Create a new branch"
 msgstr ""
 
@@ -21220,6 +21223,9 @@ msgstr ""
 msgid "OperationsDashboard|The operations dashboard provides a summary of each project's operational health, including pipeline and alert statuses."
 msgstr ""
 
+msgid "Optimize your workflow with CI/CD Pipelines"
+msgstr ""
+
 msgid "Optional"
 msgstr ""
 
@@ -22093,9 +22099,6 @@ msgstr ""
 msgid "Pipelines|There are currently no pipelines."
 msgstr ""
 
-msgid "Pipelines|There is no %{filePath} file in this repository, please add one and visit the Pipeline Editor again."
-msgstr ""
-
 msgid "Pipelines|There was an error fetching the pipelines. Try again in a few moments or contact your support team."
 msgstr ""
 

spec/frontend/pipeline_editor/components/ui/pipeline_editor_empty_state_spec.js

+import { GlSprintf } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import PipelineEditorEmptyState from '~/pipeline_editor/components/ui/pipeline_editor_empty_state.vue';
+
+describe('Pipeline editor empty state', () => {
+  let wrapper;
+  const defaultProvide = {
+    emptyStateIllustrationPath: 'my/svg/path',
+  };
+
+  const createComponent = () => {
+    wrapper = shallowMount(PipelineEditorEmptyState, {
+      provide: defaultProvide,
+    });
+  };
+
+  const findSvgImage = () => wrapper.find('img');
+  const findTitle = () => wrapper.find('h1');
+  const findDescription = () => wrapper.findComponent(GlSprintf);
+
+  beforeEach(() => {
+    createComponent();
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('renders an svg image', () => {
+    expect(findSvgImage().exists()).toBe(true);
+  });
+
+  it('renders a title', () => {
+    expect(findTitle().exists()).toBe(true);
+    expect(findTitle().text()).toBe(wrapper.vm.$options.i18n.title);
+  });
+
+  it('renders a description', () => {
+    expect(findDescription().exists()).toBe(true);
+    expect(findDescription().html()).toContain(wrapper.vm.$options.i18n.body);
+  });
+});

spec/frontend/pipeline_editor/pipeline_editor_app_spec.js

@@ -7,6 +7,7 @@ import httpStatusCodes from '~/lib/utils/http_status';
 import CommitForm from '~/pipeline_editor/components/commit/commit_form.vue';
 import TextEditor from '~/pipeline_editor/components/editor/text_editor.vue';
 
+import PipelineEditorEmptyState from '~/pipeline_editor/components/ui/pipeline_editor_empty_state.vue';
 import { COMMIT_SUCCESS, COMMIT_FAILURE, LOAD_FAILURE_UNKNOWN } from '~/pipeline_editor/constants';
 import getCiConfigData from '~/pipeline_editor/graphql/queries/ci_config.graphql';
 import PipelineEditorApp from '~/pipeline_editor/pipeline_editor_app.vue';
@@ -92,6 +93,7 @@ describe('Pipeline editor app component', () => {
   const findAlert = () => wrapper.findComponent(GlAlert);
   const findEditorHome = () => wrapper.findComponent(PipelineEditorHome);
   const findTextEditor = () => wrapper.findComponent(TextEditor);
+  const findEmptyState = () => wrapper.findComponent(PipelineEditorEmptyState);
 
   beforeEach(() => {
     mockBlobContentData = jest.fn();
@@ -146,47 +148,53 @@ describe('Pipeline editor app component', () => {
       });
     });
 
-    describe('when no file exists', () => {
-      const noFileAlertMsg =
-        'There is no .gitlab-ci.yml file in this repository, please add one and visit the Pipeline Editor again.';
-
-      it('shows a 404 error message and does not show editor home component', async () => {
+    describe('when no CI config file exists', () => {
+      describe('in a project without a repository', () => {
+        it('shows an empty state and does not show editor home component', async () => {
           mockBlobContentData.mockRejectedValueOnce({
             response: {
-            status: httpStatusCodes.NOT_FOUND,
+              status: httpStatusCodes.BAD_REQUEST,
             },
           });
           createComponentWithApollo();
 
           await waitForPromises();
 
-        expect(findAlert().text()).toBe(noFileAlertMsg);
+          expect(findEmptyState().exists()).toBe(true);
+          expect(findAlert().exists()).toBe(false);
           expect(findEditorHome().exists()).toBe(false);
         });
+      });
 
-      it('shows a 400 error message and does not show editor home component', async () => {
+      describe('in a project with a repository', () => {
+        it('shows an empty state and does not show editor home component', async () => {
           mockBlobContentData.mockRejectedValueOnce({
             response: {
-            status: httpStatusCodes.BAD_REQUEST,
+              status: httpStatusCodes.NOT_FOUND,
             },
           });
           createComponentWithApollo();
 
           await waitForPromises();
 
-        expect(findAlert().text()).toBe(noFileAlertMsg);
+          expect(findEmptyState().exists()).toBe(true);
+          expect(findAlert().exists()).toBe(false);
           expect(findEditorHome().exists()).toBe(false);
         });
+      });
 
+      describe('because of a fetching error', () => {
         it('shows a unkown error message', async () => {
           mockBlobContentData.mockRejectedValueOnce(new Error('My error!'));
           createComponentWithApollo();
           await waitForPromises();
 
+          expect(findEmptyState().exists()).toBe(false);
           expect(findAlert().text()).toBe(wrapper.vm.$options.errorTexts[LOAD_FAILURE_UNKNOWN]);
           expect(findEditorHome().exists()).toBe(true);
         });
       });
+    });
 
     describe('when the user commits', () => {
       const updateFailureMessage = 'The GitLab CI configuration could not be updated.';