add scope filters to project snippets page

app/controllers/projects/snippets_controller.rb

@@ -19,10 +19,12 @@ class Projects::SnippetsController < Projects::ApplicationController
   respond_to :html
   def index
-    @snippets = SnippetsFinder.new.execute(current_user, {
+    @snippets = SnippetsFinder.new.execute(
+      current_user,
       filter: :by_project,
-      project: @project
-    })
+      project: @project,
+      scope: params[:scope]
+    )
     @snippets = @snippets.page(params[:page])
   end

app/finders/snippets_finder.rb

@@ -8,7 +8,7 @@ class SnippetsFinder
     when :by_user then
       by_user(current_user, params[:user], params[:scope])
     when :by_project
-      by_project(current_user, params[:project])
+      by_project(current_user, params[:project], params[:scope])
     end
   end
@@ -47,14 +47,30 @@ class SnippetsFinder
     end
   end
-  def by_project(current_user, project)
+  def by_project(current_user, project, scope)
     snippets = project.snippets.fresh
     if current_user
       if project.team.member?(current_user) || current_user.admin?
-        snippets
+        case scope
+        when 'are_internal' then
+          snippets.are_internal
+        when 'are_private' then
+          snippets.are_private
+        when 'are_public' then
+          snippets.are_public
+        else
+          snippets
+        end
       else
-        snippets.public_and_internal
+        case scope
+        when 'are_internal' then
+          snippets.are_internal
+        when 'are_public' then
+          snippets.are_public
+        else
+          snippets.public_and_internal
+        end
       end
     else
       snippets.are_public

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

 - page_title "Snippets"
+- if current_user
+  .nav-links.snippet-scope-menu
+    %li{ class: ("active" unless params[:scope]) }
+      = link_to namespace_project_snippets_path(@project.namespace, @project) do
+        All
+        %span.badge
+          = @project.snippets.count
+
+    - if @project.team.member?(current_user) || current_user.admin?
+      %li{ class: ("active" if params[:scope] == "are_private") }
+        = link_to namespace_project_snippets_path(@project.namespace, @project, scope: 'are_private') do
+          Private
+          %span.badge
+            = @project.snippets.are_private.count
+
+    %li{ class: ("active" if params[:scope] == "are_internal") }
+      = link_to namespace_project_snippets_path(@project.namespace, @project, scope: 'are_internal') do
+        Internal
+        %span.badge
+          = @project.snippets.are_internal.count
+
+    %li{ class: ("active" if params[:scope] == "are_public") }
+      = link_to namespace_project_snippets_path(@project.namespace, @project, scope: 'are_public') do
+        Public
+        %span.badge
+          = @project.snippets.are_public.count
+
 .sub-header-block
   - if can?(current_user, :create_project_snippet, @project)
     = link_to new_namespace_project_snippet_path(@project.namespace, @project), class: "btn btn-new btn-wide-on-sm pull-right", title: "New snippet" do