Explore area

Create one place for exploring GitLab instance projects and groups for
both signed in and anonymous users
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/sections/explore.scss

+.explore-title {
+  text-align: center;
+
+  h3 {
+    font-weight: normal;
+    font-size: 30px;
+  }
+}

app/controllers/public/explore_controller.rb

+class Public::ExploreController < ApplicationController
+  skip_before_filter :authenticate_user!,
+    :reject_blocked,
+    :add_abilities
+
+  layout "public"
+
+  def index
+    @trending_projects = TrendingProjectsFinder.new.execute(current_user)
+    @trending_projects = @trending_projects.page(params[:page]).per(10)
+  end
+end

app/controllers/public/groups_controller.rb

@@ -3,7 +3,7 @@ class Public::GroupsController < ApplicationController
                      :reject_blocked, :set_current_user_for_observers,
                      :add_abilities
 
-  layout "public_groups"
+  layout "public"
 
   def index
     @groups = GroupsFinder.new.execute(current_user)

app/finders/trending_projects_finder.rb

+class TrendingProjectsFinder
+  def execute(current_user, start_date = nil)
+    start_date ||= Date.today - 1.month
+
+    projects = projects_for(current_user)
+
+    # Determine trending projects based on comments count
+    # for period of time - ex. month
+    projects.joins(:notes).where('notes.created_at > ?', start_date).
+      select("projects.*, count(notes.id) as ncount").
+      group("projects.id").order("ncount DESC")
+  end
+
+  private
+
+  def projects_for(current_user)
+    ProjectsFinder.new.execute(current_user)
+  end
+end

app/views/layouts/devise.html.haml

@@ -33,6 +33,6 @@
     %hr
     .container
       .footer-links
-        = link_to "Explore public projects", public_projects_path
+        = link_to "Explore", public_explore_path
         = link_to "Documentation", "http://doc.gitlab.com/"
         = link_to "About GitLab", "https://about.gitlab.com/"

app/views/layouts/public.html.haml

+- page_title = 'Explore'
 !!! 5
 %html{ lang: "en"}
-  = render "layouts/head", title: "Public Projects"
+  = render "layouts/head", title: page_title
   %body{class: "#{app_theme} application", :'data-page' => body_data_page}
     = render "layouts/broadcast"
     - if current_user
-      = render "layouts/head_panel", title: "Public Projects"
+      = render "layouts/head_panel", title: page_title
     - else
-      = render "layouts/public_head_panel", title: "Public Projects"
+      = render "layouts/public_head_panel", title: page_title
     .container.navless-container
-      .content= yield
+      .content
+        .explore-title
+          %h3
+            Explore GitLab
+          %p.lead
+            Discover projects and groups. Share your projects with others
+
+
+        %ul.nav.nav-tabs
+          = nav_link(controller: :explore) do
+            = link_to 'Trending Projects', public_explore_path
+          = nav_link(controller: :projects) do
+            = link_to 'All Projects', public_projects_path
+          = nav_link(controller: :groups) do
+            = link_to 'All Groups', public_groups_path
+
+        = yield

app/views/public/explore/index.html.haml

+.explore-trending-block
+  %p.lead
+    %i.icon-comments-alt
+    See most discussed projects for last month
+  %hr
+  %ul.bordered-list
+    - @trending_projects.each do |project|
+      %li
+        %h4.project-title
+          .project-access-icon
+            = visibility_level_icon(project.visibility_level)
+          = link_to project.name_with_namespace, project
+
+        .project-description
+          = project.description
+
+  .center
+    = link_to 'Show all projects', public_projects_path, class: 'btn btn-primary'

app/views/public/groups/index.html.haml

-%h3.page-title
-  Groups (#{@groups.total_count})
-
-%p.light
-  Group allows you to keep projects organized.
-  Use groups for uniting related projects.
-
-%hr
 .clearfix
   .pull-left
     = form_tag public_groups_path, method: :get, class: 'form-inline form-tiny' do |f|

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

-%h3.page-title
-  Projects (#{@projects.total_count})
-.light
-  You can browse public projects in read-only mode until signed in.
-%hr
 .clearfix
   .pull-left
     = form_tag public_projects_path, method: :get, class: 'form-inline form-tiny' do |f|

config/routes.rb

@@ -52,7 +52,8 @@ Gitlab::Application.routes.draw do
   namespace :public do
     resources :projects, only: [:index]
     resources :groups, only: [:index]
-    root to: "projects#index"
+    get 'explore' => 'explore#index'
+    root to: "explore#index"
   end
 
   #