add preferences and customization (#171)

app/controllers/landing_controller.rb

@@ -55,6 +55,19 @@ class LandingController < ApplicationController
   end
   helper_method :admin?
 
+  def preferences
+    @user = current_user
+  end
+
+  def landing_background
+    if !current_user || !current_user.background? then
+      (ENV['LANDING_BACKGROUND'].present?) ? ENV['LANDING_BACKGROUND'] : 'greenlight_background.png'
+    else
+      current_user.background.url
+    end
+  end
+  helper_method :landing_background
+
   private
 
   def render_meeting

app/controllers/users_controller.rb

@@ -0,0 +1,41 @@
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+#
+# Copyright (c) 2016 BigBlueButton Inc. and by respective authors (see below).
+#
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+
+class UsersController < ActionController::Base
+
+  # For updating a users background image.
+  def update
+
+    # Make sure they actually select a file.
+    if params[:user] then
+      @user = User.find(params[:id])
+      @user.assign_attributes(background: user_params[:background])
+      flash[:danger] = t('invalid_file') unless @user.save
+    else
+      flash[:danger] = t('no_file')
+    end
+
+    # Reload the page to apply changes and show flash messages.
+    redirect_back(fallback_location: root_path)
+  end
+
+  private
+
+  def user_params
+    params.require(:user).permit(:background)
+  end
+
+end

app/models/user.rb

@@ -17,6 +17,9 @@
 class User < ApplicationRecord
 
   before_create :set_encrypted_id
+  has_attached_file :background
+  validates_attachment :background,
+                       :content_type => { :content_type => ["image/jpg", "image/jpeg", "image/gif", "image/png"] }
 
   def self.from_omniauth(auth_hash)
     user = find_or_initialize_by(uid: auth_hash['uid'], provider: auth_hash['provider'])

app/views/landing/preferences.html.erb

@@ -0,0 +1,42 @@
+<%
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+# Copyright (c) 2016 BigBlueButton Inc. and by respective authors (see below).
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+%>
+
+<div class="center-panel-wrapper">
+
+  <%= render layout: 'shared/center_panel' do %>
+
+    <div class="center-block center-panel-content-size col-xs-12">
+      <h1><%= t('preferences') %></h1>
+      <br>
+
+      <% if @user %>
+        <div class="upload-form">
+          <p> <%= t('background_image') + ": " + (@user.background_file_name || '')  %> </p>
+          <%= form_for @user, :html => { :multipart => true } do |f| %>
+            <div class="form-group">
+              <%= f.file_field :background, class: 'form-control'%>
+            </div>
+            <%= f.submit t('upload'), class: 'btn btn-info' %>
+          <% end %>
+        </div>
+      <% else %>
+        <h3><%= t('preferences_logged') %></h3>
+      <% end %>
+      <br><br>
+      <%= link_to t('back'), @user ? meeting_room_url(resource: 'rooms', id: @user.encrypted_id) : root_url, class: 'btn btn-info' %>
+    </div>
+
+  <% end %>
+</div>

app/views/layouts/application.html.erb

@@ -48,7 +48,7 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
   <body class="app-background" data-controller="<%= params[:controller] %>" data-action="<%= params[:action] %>"
     data-resource="<%= params[:resource] %>"
     data-current-user="<%= current_user.try(:encrypted_id) %>"
-    style="background-image:url(<%= image_path('greenlight_background.png') if params[:controller] == 'landing' %>);">
+    style="background-image:url(<%= image_path(landing_background) if params[:controller] == 'landing' %>);">
     <!-- Messages -->
     <div id='alerts'>
       <div class='flash-alerts'>

app/views/shared/_center_panel.html.erb

@@ -25,7 +25,8 @@
         </div>
         <%= yield :footer %>
         <div class="help-link">
-          <%= link_to t('help'), 'http://bigbluebutton.org/videos/', target: '_blank' %>
+          <%= link_to t('help'), 'http://bigbluebutton.org/videos/', target: '_blank' %> |
+          <%= link_to t('preferences'), preferences_path %>
         </div>
       </div>
     </div>