From 71eab8f4df5bc65af8bc7df97e28e7eecf419304 Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Sun, 20 Sep 2015 23:00:30 +0800
Subject: [PATCH] FEATURE: Add web manifest for Chrome users.

---
 app/controllers/manifest_json_controller.rb       | 15 +++++++++++++++
 app/views/layouts/application.html.erb            |  1 +
 config/routes.rb                                  |  1 +
 spec/controllers/manifest_json_controller_spec.rb | 12 ++++++++++++
 4 files changed, 29 insertions(+)
 create mode 100644 app/controllers/manifest_json_controller.rb
 create mode 100644 spec/controllers/manifest_json_controller_spec.rb

diff --git a/app/controllers/manifest_json_controller.rb b/app/controllers/manifest_json_controller.rb
new file mode 100644
index 00000000000..5462ec1fd63
--- /dev/null
+++ b/app/controllers/manifest_json_controller.rb
@@ -0,0 +1,15 @@
+class ManifestJsonController < ApplicationController
+  layout false
+  skip_before_filter :preload_json, :check_xhr
+
+  def index
+    manifest = {
+      short_name: SiteSetting.title,
+      display: 'browser',
+      orientation: 'portrait',
+      start_url: "#{Discourse.base_uri}/"
+    }
+
+    render json: manifest.to_json
+  end
+end
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 8a29518367d..65cf09b5350 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -31,6 +31,7 @@
     <%- end %>
 
     <%= render_google_universal_analytics_code %>
+    <link rel="manifest" href="<%= Discourse.base_uri %>/manifest.json">
 
     <%= yield :head %>
   </head>
diff --git a/config/routes.rb b/config/routes.rb
index 66125570f49..75d3dcf7cc6 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -533,6 +533,7 @@ Discourse::Application.routes.draw do
   get "favicon/proxied" => "static#favicon", format: false
 
   get "robots.txt" => "robots_txt#index"
+  get "manifest.json" => "manifest_json#index", as: :manifest
 
   Discourse.filters.each do |filter|
     root to: "list##{filter}", constraints: HomePageConstraint.new("#{filter}"), :as => "list_#{filter}"
diff --git a/spec/controllers/manifest_json_controller_spec.rb b/spec/controllers/manifest_json_controller_spec.rb
new file mode 100644
index 00000000000..41df4e221ca
--- /dev/null
+++ b/spec/controllers/manifest_json_controller_spec.rb
@@ -0,0 +1,12 @@
+require 'spec_helper'
+
+RSpec.describe ManifestJsonController do
+  context 'index' do
+    it 'returns the right output' do
+      title = 'MyApp'
+      SiteSetting.title = title
+      get :index
+      expect(response.body).to include(title)
+    end
+  end
+end