Resolve "Drop down filter for project snippets"

app/assets/javascripts/gfm_auto_complete.js

@@ -15,6 +15,7 @@ export const defaultAutocompleteConfig = {
   epics: true,
   milestones: true,
   labels: true,
+  snippets: true,
 };
 
 class GfmAutoComplete {
@@ -50,6 +51,7 @@ class GfmAutoComplete {
     if (this.enableMap.milestones) this.setupMilestones($input);
     if (this.enableMap.mergeRequests) this.setupMergeRequests($input);
     if (this.enableMap.labels) this.setupLabels($input);
+    if (this.enableMap.snippets) this.setupSnippets($input);
 
     // We don't instantiate the quick actions autocomplete for note and issue/MR edit forms
     $input.filter('[data-supports-quick-actions="true"]').atwho({
@@ -360,6 +362,39 @@ class GfmAutoComplete {
     });
   }
 
+  setupSnippets($input) {
+    $input.atwho({
+      at: '$',
+      alias: 'snippets',
+      searchKey: 'search',
+      displayTpl(value) {
+        let tmpl = GfmAutoComplete.Loading.template;
+        if (value.title != null) {
+          tmpl = GfmAutoComplete.Issues.template;
+        }
+        return tmpl;
+      },
+      data: GfmAutoComplete.defaultLoadingData,
+      // eslint-disable-next-line no-template-curly-in-string
+      insertTpl: '${atwho-at}${id}',
+      callbacks: {
+        ...this.getDefaultCallbacks(),
+        beforeSave(snippets) {
+          return $.map(snippets, (m) => {
+            if (m.title == null) {
+              return m;
+            }
+            return {
+              id: m.id,
+              title: sanitize(m.title),
+              search: `${m.id} ${m.title}`,
+            };
+          });
+        },
+      },
+    });
+  }
+
   getDefaultCallbacks() {
     const fetchData = this.fetchData.bind(this);
 
@@ -470,7 +505,7 @@ class GfmAutoComplete {
     // The below is taken from At.js source
     // Tweaked to commands to start without a space only if char before is a non-word character
     // https://github.com/ichord/At.js
-    const atSymbolsWithBar = Object.keys(controllers).join('|');
+    const atSymbolsWithBar = Object.keys(controllers).join('|').replace(/[$]/, '\\$&');
     const atSymbolsWithoutBar = Object.keys(controllers).join('');
     const targetSubtext = subtext.split(GfmAutoComplete.regexSubtext).pop();
     const resultantFlag = flag.replace(/[-[\]/{}()*+?.\\^$|]/g, '\\$&');
@@ -497,6 +532,7 @@ GfmAutoComplete.atTypeMap = {
   '~': 'labels',
   '%': 'milestones',
   '/': 'commands',
+  $: 'snippets',
 };
 
 // Emoji
@@ -519,7 +555,7 @@ GfmAutoComplete.Labels = {
   // eslint-disable-next-line no-template-curly-in-string
   template: '<li><span class="dropdown-label-box" style="background: ${color}"></span> ${title}</li>',
 };
-// Issues and MergeRequests
+// Issues, MergeRequests and Snippets
 GfmAutoComplete.Issues = {
   // eslint-disable-next-line no-template-curly-in-string
   template: '<li><small>${id}</small> ${title}</li>',

app/assets/javascripts/pages/snippets/form.js

@@ -11,6 +11,7 @@ export default () => {
     epics: false,
     milestones: false,
     labels: false,
+    snippets: false,
   });
   new ZenMode(); // eslint-disable-line no-new
 };

app/assets/javascripts/shared/milestones/form.js

@@ -15,5 +15,6 @@ export default (initGFM = true) => {
     epics: initGFM,
     milestones: initGFM,
     labels: initGFM,
+    snippets: initGFM,
   });
 };

app/assets/javascripts/vue_shared/components/markdown/field.vue

@@ -76,6 +76,7 @@
         epics: this.enableAutocomplete,
         milestones: this.enableAutocomplete,
         labels: this.enableAutocomplete,
+        snippets: this.enableAutocomplete,
       });
     },
     beforeDestroy() {

app/controllers/projects/autocomplete_sources_controller.rb

@@ -27,6 +27,10 @@ class Projects::AutocompleteSourcesController < Projects::ApplicationController
     render json: @autocomplete_service.commands(target, params[:type])
   end
 
+  def snippets
+    render json: @autocomplete_service.snippets
+  end
+
   private
 
   def load_autocomplete_service

app/helpers/application_helper.rb

@@ -292,7 +292,8 @@ module ApplicationHelper
       mergeRequests: merge_requests_project_autocomplete_sources_path(object),
       labels: labels_project_autocomplete_sources_path(object, type: noteable_type, type_id: params[:id]),
       milestones: milestones_project_autocomplete_sources_path(object),
-      commands: commands_project_autocomplete_sources_path(object, type: noteable_type, type_id: params[:id])
+      commands: commands_project_autocomplete_sources_path(object, type: noteable_type, type_id: params[:id]),
+      snippets: snippets_project_autocomplete_sources_path(object)
     }
   end
 end

app/services/projects/autocomplete_service.rb

@@ -29,6 +29,10 @@ module Projects
       QuickActions::InterpretService.new(project, current_user).available_commands(noteable)
     end
 
+    def snippets
+      SnippetsFinder.new(current_user, project: project).execute.select([:id, :title])
+    end
+
     def labels_as_hash(target)
       super(target, project_id: project.id, include_ancestor_groups: true)
     end

changelogs/unreleased/22188-drop-down-filter-for-project-snippets.yml

+---
+title: Add autocomplete drop down filter for project snippets
+merge_request: 21458
+author: Fabian Schneider
+type: added

config/routes/project.rb

@@ -32,6 +32,7 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
           get 'labels'
           get 'milestones'
           get 'commands'
+          get 'snippets'
         end
       end
 

spec/features/issues/gfm_autocomplete_spec.rb

@@ -5,6 +5,7 @@ describe 'GFM autocomplete', :js do
   let(:project) { create(:project) }
   let(:label) { create(:label, project: project, title: 'special+') }
   let(:issue)   { create(:issue, project: project) }
+  let!(:project_snippet) { create(:project_snippet, project: project, title: 'code snippet') }
 
   before do
     project.add_maintainer(user)
@@ -301,6 +302,16 @@ describe 'GFM autocomplete', :js do
     end
   end
 
+  it 'shows project snippets' do
+    page.within '.timeline-content-form' do
+      find('#note-body').native.send_keys('$')
+    end
+
+    page.within '.atwho-container' do
+      expect(page).to have_content(project_snippet.title)
+    end
+  end
+
   private
 
   def expect_to_wrap(should_wrap, item, note, value)

spec/helpers/application_helper_spec.rb

@@ -174,9 +174,7 @@ describe ApplicationHelper do
 
     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])
-
+      expect(sources.keys).to match_array([:members, :issues, :mergeRequests, :labels, :milestones, :commands, :snippets])
       sources.keys.each do |key|
         expect(sources[key]).not_to be_nil
       end

spec/javascripts/gfm_auto_complete_spec.js

@@ -103,7 +103,7 @@ describe('GfmAutoComplete', function () {
       gfmAutoCompleteCallbacks.matcher.call(context, flag, subtext)
     );
 
-    const flagsUseDefaultMatcher = ['@', '#', '!', '~', '%'];
+    const flagsUseDefaultMatcher = ['@', '#', '!', '~', '%', '$'];
     const otherFlags = ['/', ':'];
     const flags = flagsUseDefaultMatcher.concat(otherFlags);
 

spec/routing/project_routing_spec.rb

@@ -133,8 +133,9 @@ describe 'project routing' do
   # labels_namespace_project_autocomplete_sources_path         GET /:project_id/autocomplete_sources/labels(.:format)         projects/autocomplete_sources#labels
   # milestones_namespace_project_autocomplete_sources_path     GET /:project_id/autocomplete_sources/milestones(.:format)     projects/autocomplete_sources#milestones
   # commands_namespace_project_autocomplete_sources_path       GET /:project_id/autocomplete_sources/commands(.:format)       projects/autocomplete_sources#commands
+  # snippets_namespace_project_autocomplete_sources_path       GET /:project_id/autocomplete_sources/snippets(.:format)       projects/autocomplete_sources#snippets
   describe Projects::AutocompleteSourcesController, 'routing' do
-    [:members, :issues, :merge_requests, :labels, :milestones, :commands].each do |action|
+    [:members, :issues, :merge_requests, :labels, :milestones, :commands, :snippets].each do |action|
       it "to ##{action}" do
         expect(get("/gitlab/gitlabhq/autocomplete_sources/#{action}")).to route_to("projects/autocomplete_sources##{action}", namespace_id: 'gitlab', project_id: 'gitlabhq')
       end