Show broadcast message to users

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/common.scss

@@ -351,3 +351,10 @@ table {
   @extend .btn-new;
   padding: 5px 15px;
 }
+
+.broadcast-message {
+  padding: 10px;
+  text-align: center;
+  background: #555;
+  color: #BBB;
+}

app/helpers/application_helper.rb

@@ -208,4 +208,8 @@ module ApplicationHelper
     line += "..." if lines.size > 1
     line
   end
+
+  def broadcast_message
+    BroadcastMessage.current
+  end
 end

app/models/broadcast_message.rb

@@ -4,4 +4,8 @@ class BroadcastMessage < ActiveRecord::Base
   validates :message, presence: true
   validates :starts_at, presence: true
   validates :ends_at, presence: true
+
+  def self.current
+    where("ends_at > :now AND starts_at < :now", now: Time.zone.now).last
+  end
 end

app/views/layouts/_broadcast.html.haml

+- if broadcast_message.present?
+  .broadcast-message
+    %i.icon-bullhorn
+    = broadcast_message.message

app/views/layouts/application.html.haml

@@ -2,6 +2,7 @@
 %html{ lang: "en"}
   = render "layouts/head", title: "Dashboard"
   %body{class: "#{app_theme} application", :'data-page' => body_data_page }
+    = render "layouts/broadcast"
     = render "layouts/head_panel", title: "Dashboard"
     = render "layouts/flash"
     %nav.main-nav

app/views/layouts/projects.html.haml

@@ -2,6 +2,7 @@
 %html{ lang: "en"}
   = render "layouts/head", title: @project.name_with_namespace
   %body{class: "#{app_theme} project", :'data-page' => body_data_page, :'data-project-id' => @project.id }
+    = render "layouts/broadcast"
     = render "layouts/head_panel", title: project_title(@project)
     = render "layouts/init_auto_complete"
     = render "layouts/flash"

spec/models/broadcast_message_spec.rb

@@ -4,4 +4,21 @@ describe BroadcastMessage do
   subject { create(:broadcast_message) }
   it { should be_valid }
+
+  describe :current do
+    it "should return last message if time match" do
+      broadcast_message = create(:broadcast_message, starts_at: Time.now.yesterday, ends_at: Time.now.tomorrow)
+      BroadcastMessage.current.should == broadcast_message
+    end
+
+    it "should return nil if time not come" do
+      broadcast_message = create(:broadcast_message, starts_at: Time.now.tomorrow, ends_at: Time.now + 2.days)
+      BroadcastMessage.current.should be_nil
+    end
+
+    it "should return nil if time has passed" do
+      broadcast_message = create(:broadcast_message, starts_at: Time.now - 2.days, ends_at: Time.now.yesterday)
+      BroadcastMessage.current.should be_nil
+    end
+  end
 end