Renamed a query

Also introduced the fragments to have a possibility to be flexbile in
constructing queries and mutations later.

app/assets/javascripts/pages/projects/snippets/show/index.js

@@ -3,11 +3,16 @@ import ZenMode from '~/zen_mode';
 import LineHighlighter from '~/line_highlighter';
 import BlobViewer from '~/blob/viewer';
 import snippetEmbed from '~/snippet/snippet_embed';
+import initSnippetsApp from '~/snippets';
 
 document.addEventListener('DOMContentLoaded', () => {
+  if (!gon.features.snippetsVue) {
     new LineHighlighter(); // eslint-disable-line no-new
     new BlobViewer(); // eslint-disable-line no-new
     initNotes();
     new ZenMode(); // eslint-disable-line no-new
     snippetEmbed();
+  } else {
+    initSnippetsApp();
+  }
 });

app/assets/javascripts/snippets/components/app.vue

 <script>
-import getSnippet from '../queries/getSnippet.query.graphql';
+import GetSnippetQuery from '../queries/snippet.query.graphql';
+import SnippetHeader from './snippet_header.vue';
+import { GlLoadingIcon } from '@gitlab/ui';
 
 export default {
+  components: {
+    SnippetHeader,
+    GlLoadingIcon,
+  },
   apollo: {
-    snippetData: {
-      query: getSnippet,
+    snippet: {
+      query: GetSnippetQuery,
       variables() {
         return {
           ids: this.snippetGid,
@@ -21,11 +27,24 @@ export default {
   },
   data() {
     return {
-      snippetData: {},
+      snippet: {},
     };
   },
+  computed: {
+    isLoading() {
+      return this.$apollo.queries.snippet.loading;
+    },
+  },
 };
 </script>
 <template>
-  <div class="js-snippet-view"></div>
+  <div class="js-snippet-view">
+    <gl-loading-icon
+      v-if="isLoading"
+      :label="__('Loading snippet')"
+      :size="2"
+      class="loading-animation prepend-top-20 append-bottom-20"
+    />
+    <snippet-header v-else :snippet="snippet" />
+  </div>
 </template>

app/assets/javascripts/snippets/components/snippet_header.vue

+<script>
+import { __ } from '~/locale';
+import {
+  GlAvatar,
+  GlIcon,
+  GlSprintf,
+  GlButton,
+  GlModal,
+  GlAlert,
+  GlLoadingIcon,
+  GlDropdown,
+  GlDropdownItem,
+} from '@gitlab/ui';
+import TimeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
+
+import DeleteSnippetMutation from '../mutations/deleteSnippet.mutation.graphql';
+import CanCreatePersonalSnippet from '../queries/userPermissions.query.graphql';
+import CanCreateProjectSnippet from '../queries/projectPermissions.query.graphql';
+
+export default {
+  components: {
+    GlAvatar,
+    GlIcon,
+    GlSprintf,
+    GlButton,
+    GlModal,
+    GlAlert,
+    GlLoadingIcon,
+    GlDropdown,
+    GlDropdownItem,
+    TimeAgoTooltip,
+  },
+  apollo: {
+    canCreateSnippet: {
+      query() {
+        return this.snippet.project ? CanCreateProjectSnippet : CanCreatePersonalSnippet;
+      },
+      variables() {
+        return {
+          fullPath: this.snippet.project ? this.snippet.project.fullPath : undefined,
+        };
+      },
+      update(data) {
+        return this.snippet.project
+          ? data.project.userPermissions.createSnippet
+          : data.currentUser.userPermissions.createSnippet;
+      },
+    },
+  },
+  props: {
+    snippet: {
+      type: Object,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      isDeleting: false,
+      errorMessage: '',
+      canCreateSnippet: false,
+    };
+  },
+  computed: {
+    personalSnippetActions() {
+      return [
+        {
+          condition: this.snippet.userPermissions.updateSnippet,
+          text: __('Edit'),
+          href: this.editLink,
+          click: undefined,
+          variant: 'outline-info',
+          cssClass: undefined,
+        },
+        {
+          condition: this.snippet.userPermissions.adminSnippet,
+          text: __('Delete'),
+          href: undefined,
+          click: this.showDeleteModal,
+          variant: 'outline-danger',
+          cssClass: 'btn-inverted btn-danger ml-2',
+        },
+        {
+          condition: this.canCreateSnippet,
+          text: __('New snippet'),
+          href: this.snippet.project
+            ? `${this.snippet.project.webUrl}/snippets/new`
+            : '/snippets/new',
+          click: undefined,
+          variant: 'outline-success',
+          cssClass: 'btn-inverted btn-success ml-2',
+        },
+      ];
+    },
+    editLink() {
+      return `${this.snippet.webUrl}/edit`;
+    },
+    visibility() {
+      return this.snippet.visibilityLevel;
+    },
+    snippetVisibilityLevelDescription() {
+      switch (this.visibility) {
+        case 'private':
+          return this.snippet.project !== null
+            ? __('The snippet is visible only to project members.')
+            : __('The snippet is visible only to me.');
+        case 'internal':
+          return __('The snippet is visible to any logged in user.');
+        default:
+          return __('The snippet can be accessed without any authentication.');
+      }
+    },
+    visibilityLevelIcon() {
+      switch (this.visibility) {
+        case 'private':
+          return 'lock';
+        case 'internal':
+          return 'shield';
+        default:
+          return 'earth';
+      }
+    },
+  },
+  methods: {
+    redirectToSnippets() {
+      window.location.pathname = 'dashboard/snippets';
+    },
+    closeDeleteModal() {
+      this.$refs.deleteModal.hide();
+    },
+    showDeleteModal() {
+      this.$refs.deleteModal.show();
+    },
+    deleteSnippet() {
+      this.isDeleting = true;
+      this.$apollo
+        .mutate({
+          mutation: DeleteSnippetMutation,
+          variables: { id: this.snippet.id },
+        })
+        .then(() => {
+          this.isDeleting = false;
+          this.errorMessage = undefined;
+          this.closeDeleteModal();
+          this.redirectToSnippets();
+        })
+        .catch(err => {
+          this.isDeleting = false;
+          this.errorMessage = err.message;
+        });
+    },
+  },
+};
+</script>
+<template>
+  <div class="detail-page-header">
+    <div class="detail-page-header-body">
+      <div
+        class="snippet-box qa-snippet-box has-tooltip d-flex align-items-center append-right-5 mb-1"
+        :title="snippetVisibilityLevelDescription"
+        data-container="body"
+      >
+        <span class="sr-only">
+          {{ s__(`VisibilityLevel|${visibility}`) }}
+        </span>
+        <gl-icon :name="visibilityLevelIcon" :size="14" />
+      </div>
+      <div class="creator">
+        <gl-sprintf message="Authored %{timeago} by %{author}">
+          <template #timeago>
+            <time-ago-tooltip
+              :time="snippet.createdAt"
+              tooltip-placement="bottom"
+              css-class="snippet_updated_ago"
+            />
+          </template>
+          <template #author>
+            <a :href="snippet.author.webUrl" class="d-inline">
+              <gl-avatar :size="24" :src="snippet.author.avatarUrl" />
+              <span class="bold">{{ snippet.author.name }}</span>
+            </a>
+          </template>
+        </gl-sprintf>
+      </div>
+    </div>
+
+    <div class="detail-page-header-actions">
+      <div class="d-none d-sm-block">
+        <template v-for="(action, index) in personalSnippetActions">
+          <gl-button
+            v-if="action.condition"
+            :key="index"
+            :variant="action.variant"
+            :class="action.cssClass"
+            :href="action.href || undefined"
+            @click="action.click ? action.click() : undefined"
+          >
+            {{ action.text }}
+          </gl-button>
+        </template>
+      </div>
+      <div class="d-block d-sm-none dropdown">
+        <gl-dropdown :text="__('Options')" class="w-100" toggle-class="text-center">
+          <gl-dropdown-item
+            v-for="(action, index) in personalSnippetActions"
+            :key="index"
+            :href="action.href || undefined"
+            @click="action.click ? action.click() : undefined"
+            >{{ action.text }}</gl-dropdown-item
+          >
+        </gl-dropdown>
+      </div>
+    </div>
+
+    <gl-modal ref="deleteModal" modal-id="delete-modal" title="Example title">
+      <template #modal-title>{{ __('Delete snippet?') }}</template>
+
+      <gl-alert v-if="errorMessage" variant="danger" class="mb-2" @dismiss="errorMessage = ''">{{
+        errorMessage
+      }}</gl-alert>
+
+      <gl-sprintf message="Are you sure you want to delete %{name}?">
+        <template #name
+          ><strong>{{ snippet.title }}</strong></template
+        >
+      </gl-sprintf>
+
+      <template #modal-footer>
+        <gl-button @click="closeDeleteModal">{{ __('Cancel') }}</gl-button>
+        <gl-button
+          variant="danger"
+          :disabled="isDeleting"
+          data-qa-selector="delete_snippet_button"
+          @click="deleteSnippet"
+        >
+          <gl-loading-icon v-if="isDeleting" inline />
+          {{ __('Delete snippet') }}
+        </gl-button>
+      </template>
+    </gl-modal>
+  </div>
+</template>

app/assets/javascripts/snippets/fragments/author.fragment.graphql

+fragment Author on Snippet {
+  author {
+    name,
+    avatarUrl,
+    username,
+    webUrl
+  }
+}
\ No newline at end of file

app/assets/javascripts/snippets/fragments/project.fragment.graphql

+fragment Project on Snippet {
+  project {
+    fullPath
+    webUrl
+  }
+}
\ No newline at end of file

app/assets/javascripts/snippets/fragments/snippetBase.fragment.graphql

+fragment SnippetBase on Snippet {
+  id
+  title
+  description
+  createdAt
+  updatedAt
+  visibilityLevel
+  webUrl
+  userPermissions {
+    adminSnippet
+    updateSnippet
+  }
+}
\ No newline at end of file

app/assets/javascripts/snippets/mutations/deleteSnippet.mutation.graphql

+mutation DeleteSnippet($id: ID!) {
+  destroySnippet(input: {id: $id}) {
+    errors
+  }
+}
\ No newline at end of file

app/assets/javascripts/snippets/queries/getSnippet.query.graphql

-query getSnippet($ids: [ID!]) {
-  snippets(ids: $ids) {
-    edges {
-      node {
-        title
-        description
-        createdAt
-        updatedAt
-        visibility
-      }
-    }
-  }
-}

app/assets/javascripts/snippets/queries/projectPermissions.query.graphql

+query CanCreateProjectSnippet($fullPath: ID!) {
+  project(fullPath: $fullPath) {
+    userPermissions {
+      createSnippet
+    }
+  }
+}
\ No newline at end of file

app/assets/javascripts/snippets/queries/snippet.query.graphql

+#import '../fragments/snippetBase.fragment.graphql'
+#import '../fragments/project.fragment.graphql'
+#import '../fragments/author.fragment.graphql'
+
+query GetSnippetQuery($ids: [ID!]) {
+  snippets(ids: $ids) {
+    edges {
+      node {
+        ...SnippetBase
+        ...Project
+        ...Author
+      }
+    }
+  }
+}

app/assets/javascripts/snippets/queries/userPermissions.query.graphql

+query CanCreatePersonalSnippet {
+  currentUser {
+    userPermissions {
+      createSnippet
+    }
+  }
+}
\ No newline at end of file

app/views/projects/snippets/show.html.haml

@@ -3,9 +3,12 @@
 - breadcrumb_title @snippet.to_reference
 - page_title "#{@snippet.title} (#{@snippet.to_reference})", _("Snippets")
 
-= render 'shared/snippets/header'
+- if Feature.enabled?(:snippets_vue)
+  #js-snippet-view{ data: {'qa-selector': 'snippet_view', 'snippet-gid': @snippet.to_global_id} }
+- else
+  = render 'shared/snippets/header'
 
-.project-snippets
+  .project-snippets
     %article.file-holder.snippet-file-content
       = render 'shared/snippets/blob'
 

locale/gitlab.pot

@@ -5644,6 +5644,12 @@ msgstr ""
 msgid "Delete list"
 msgstr ""
 
+msgid "Delete snippet"
+msgstr ""
+
+msgid "Delete snippet?"
+msgstr ""
+
 msgid "Delete source branch"
 msgstr ""
 
@@ -10709,6 +10715,9 @@ msgstr ""
 msgid "Loading issues"
 msgstr ""
 
+msgid "Loading snippet"
+msgstr ""
+
 msgid "Loading the GitLab IDE..."
 msgstr ""
 

spec/features/discussion_comments/snippets_spec.rb

@@ -8,6 +8,7 @@ describe 'Thread Comments Snippet', :js do
   let(:snippet) { create(:project_snippet, :private, project: project, author: user) }
 
   before do
+    stub_feature_flags(snippets_vue: false)
     project.add_maintainer(user)
     sign_in(user)
 

spec/features/projects/snippets/create_snippet_spec.rb

@@ -18,6 +18,7 @@ describe 'Projects > Snippets > Create Snippet', :js do
 
   context 'when a user is authenticated' do
     before do
+      stub_feature_flags(snippets_vue: false)
       project.add_maintainer(user)
       sign_in(user)
 
@@ -76,6 +77,10 @@ describe 'Projects > Snippets > Create Snippet', :js do
   end
 
   context 'when a user is not authenticated' do
+    before do
+      stub_feature_flags(snippets_vue: false)
+    end
+
     it 'shows a public snippet on the index page but not the New snippet button' do
       snippet = create(:project_snippet, :public, project: project)
 

spec/features/projects/snippets/show_spec.rb

@@ -8,6 +8,7 @@ describe 'Projects > Snippets > Project snippet', :js do
   let(:snippet) { create(:project_snippet, project: project, file_name: file_name, content: content) }
 
   before do
+    stub_feature_flags(snippets_vue: false)
     project.add_maintainer(user)
     sign_in(user)
   end

spec/features/projects/snippets/user_comments_on_snippet_spec.rb

@@ -8,6 +8,7 @@ describe 'Projects > Snippets > User comments on a snippet', :js do
   let(:user) { create(:user) }
 
   before do
+    stub_feature_flags(snippets_vue: false)
     project.add_maintainer(user)
     sign_in(user)
 

spec/features/projects/snippets/user_deletes_snippet_spec.rb

@@ -8,6 +8,7 @@ describe 'Projects > Snippets > User deletes a snippet' do
   let(:user) { create(:user) }
 
   before do
+    stub_feature_flags(snippets_vue: false)
     project.add_maintainer(user)
     sign_in(user)
 

spec/features/projects/snippets/user_updates_snippet_spec.rb

@@ -8,6 +8,7 @@ describe 'Projects > Snippets > User updates a snippet' do
   let(:user) { create(:user) }
 
   before do
+    stub_feature_flags(snippets_vue: false)
     project.add_maintainer(user)
     sign_in(user)
 

spec/features/reportable_note/snippets_spec.rb

@@ -7,6 +7,7 @@ describe 'Reportable note on snippets', :js do
   let(:project) { create(:project) }
 
   before do
+    stub_feature_flags(snippets_vue: false)
     project.add_maintainer(user)
     sign_in(user)
   end

spec/frontend/snippets/components/app_spec.js

 import SnippetApp from '~/snippets/components/app.vue';
+import SnippetHeader from '~/snippets/components/snippet_header.vue';
+import { GlLoadingIcon } from '@gitlab/ui';
+
 import { createLocalVue, shallowMount } from '@vue/test-utils';
 
 describe('Snippet view app', () => {
   let wrapper;
-  let snippetDataMock;
   const localVue = createLocalVue();
   const defaultProps = {
-    snippetGid: 'gid://gitlab/PersonalSnippet/35',
+    snippetGid: 'gid://gitlab/PersonalSnippet/42',
   };
 
-  function createComponent({ props = defaultProps, snippetData = {} } = {}) {
-    snippetDataMock = jest.fn();
+  function createComponent({ props = defaultProps, loading = false } = {}) {
     const $apollo = {
       queries: {
-        snippetData: snippetDataMock,
+        snippet: {
+          loading,
+        },
       },
     };
 
@@ -25,17 +28,18 @@ describe('Snippet view app', () => {
         ...props,
       },
     });
-
-    wrapper.setData({
-      snippetData,
-    });
   }
   afterEach(() => {
     wrapper.destroy();
   });
 
-  it('renders itself', () => {
+  it('renders loader while the query is in flight', () => {
+    createComponent({ loading: true });
+    expect(wrapper.find(GlLoadingIcon).exists()).toBe(true);
+  });
+
+  it('renders SnippetHeader component after the query is finished', () => {
     createComponent();
-    expect(wrapper.find('.js-snippet-view').exists()).toBe(true);
+    expect(wrapper.find(SnippetHeader).exists()).toBe(true);
   });
 });

spec/frontend/snippets/components/snippet_header_spec.js

+import SnippetHeader from '~/snippets/components/snippet_header.vue';
+import DeleteSnippetMutation from '~/snippets/mutations/deleteSnippet.mutation.graphql';
+import { ApolloMutation } from 'vue-apollo';
+import { GlButton, GlModal } from '@gitlab/ui';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
+
+describe('Snippet header component', () => {
+  let wrapper;
+  const localVue = createLocalVue();
+  const snippet = {
+    snippet: {
+      id: 'gid://gitlab/PersonalSnippet/50',
+      title: 'The property of Thor',
+      visibilityLevel: 'private',
+      webUrl: 'http://personal.dev.null/42',
+      userPermissions: {
+        adminSnippet: true,
+        updateSnippet: true,
+        reportSnippet: false,
+      },
+      project: null,
+      author: {
+        name: 'Thor Odinson',
+      },
+    },
+  };
+  const mutationVariables = {
+    mutation: DeleteSnippetMutation,
+    variables: {
+      id: snippet.snippet.id,
+    },
+  };
+  const errorMsg = 'Foo bar';
+  const err = { message: errorMsg };
+
+  const resolveMutate = jest.fn(() => Promise.resolve());
+  const rejectMutation = jest.fn(() => Promise.reject(err));
+
+  const mutationTypes = {
+    RESOLVE: resolveMutate,
+    REJECT: rejectMutation,
+  };
+
+  function createComponent({
+    loading = false,
+    permissions = {},
+    mutationRes = mutationTypes.RESOLVE,
+  } = {}) {
+    const defaultProps = Object.assign({}, snippet);
+    if (permissions) {
+      Object.assign(defaultProps.snippet.userPermissions, {
+        ...permissions,
+      });
+    }
+    const $apollo = {
+      queries: {
+        canCreateSnippet: {
+          loading,
+        },
+      },
+      mutate: mutationRes,
+    };
+
+    wrapper = shallowMount(SnippetHeader, {
+      sync: false,
+      mocks: { $apollo },
+      localVue,
+      propsData: {
+        ...defaultProps,
+      },
+      stubs: {
+        ApolloMutation,
+      },
+    });
+  }
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('renders itself', () => {
+    createComponent();
+    expect(wrapper.find('.detail-page-header').exists()).toBe(true);
+  });
+
+  it('renders action buttons based on permissions', () => {
+    createComponent({
+      permissions: {
+        adminSnippet: false,
+        updateSnippet: false,
+      },
+    });
+    expect(wrapper.findAll(GlButton).length).toEqual(0);
+
+    createComponent({
+      permissions: {
+        adminSnippet: true,
+        updateSnippet: false,
+      },
+    });
+    expect(wrapper.findAll(GlButton).length).toEqual(1);
+
+    createComponent({
+      permissions: {
+        adminSnippet: true,
+        updateSnippet: true,
+      },
+    });
+    expect(wrapper.findAll(GlButton).length).toEqual(2);
+
+    createComponent({
+      permissions: {
+        adminSnippet: true,
+        updateSnippet: true,
+      },
+    });
+    wrapper.setData({
+      canCreateSnippet: true,
+    });
+    return wrapper.vm.$nextTick().then(() => {
+      expect(wrapper.findAll(GlButton).length).toEqual(3);
+    });
+  });
+
+  it('renders modal for deletion of a snippet', () => {
+    createComponent();
+    expect(wrapper.find(GlModal).exists()).toBe(true);
+  });
+
+  describe('Delete mutation', () => {
+    const { location } = window;
+
+    beforeEach(() => {
+      delete window.location;
+      window.location = {
+        pathname: '',
+      };
+    });
+
+    afterEach(() => {
+      window.location = location;
+    });
+
+    it('dispatches a mutation to delete the snippet with correct variables', () => {
+      createComponent();
+      wrapper.vm.deleteSnippet();
+      expect(mutationTypes.RESOLVE).toHaveBeenCalledWith(mutationVariables);
+    });
+
+    it('sets error message if mutation fails', () => {
+      createComponent({ mutationRes: mutationTypes.REJECT });
+      expect(Boolean(wrapper.vm.errorMessage)).toBe(false);
+
+      wrapper.vm.deleteSnippet();
+      return wrapper.vm.$nextTick().then(() => {
+        expect(wrapper.vm.errorMessage).toEqual(errorMsg);
+      });
+    });
+
+    it('closes modal and redirects to snippets listing in case of successful mutation', () => {
+      createComponent();
+      wrapper.vm.closeDeleteModal = jest.fn();
+
+      wrapper.vm.deleteSnippet();
+      return wrapper.vm.$nextTick().then(() => {
+        expect(wrapper.vm.closeDeleteModal).toHaveBeenCalled();
+        expect(window.location.pathname).toEqual('dashboard/snippets');
+      });
+    });
+  });
+});