Added setting for admin to limit the number of rooms for the user (#607)

app/assets/stylesheets/admins.scss

@@ -45,4 +45,13 @@
 
 .authentication-required{
   padding-top: 2px;
+}
+
+#site_settings {
+  .colorinput-color {
+    text-align: center;
+    padding-top: 4px;
+    height: 2rem;
+    width: 2rem;
+  }
 }

app/controllers/admins_controller.rb

@@ -23,7 +23,7 @@ class AdminsController < ApplicationController
 
   manage_users = [:edit_user, :promote, :demote, :ban_user, :unban_user, :approve]
   site_settings = [:branding, :coloring, :coloring_lighten, :coloring_darken,
-                   :registration_method, :room_authentication]
+                   :registration_method, :room_authentication, :room_limit]
 
   authorize_resource class: false
   before_action :find_user, only: manage_users
@@ -153,6 +153,12 @@ class AdminsController < ApplicationController
     end
   end
 
+  # POST /admins/room_limit
+  def room_limit
+    @settings.update_value("Room Limit", params[:limit])
+    redirect_to admins_path, flash: { success: I18n.t("administrator.flash.settings") }
+  end
+
   private
 
   def find_user

app/controllers/rooms_controller.rb

@@ -33,6 +33,8 @@ class RoomsController < ApplicationController
   def create
     redirect_to(root_path) && return unless current_user
 
+    return redirect_to current_user.main_room, flash: { alert: I18n.t("room.room_limit") } if room_limit_exceeded
+
     @room = Room.new(name: room_params[:name])
     @room.owner = current_user
     @room.room_settings = create_room_settings_string(room_params[:mute_on_join], room_params[:client])
@@ -279,4 +281,14 @@ class RoomsController < ApplicationController
     Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Authentication") == "true" &&
       current_user.nil?
   end
+
+  def room_limit_exceeded
+    limit = Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Limit").to_i
+
+    # Does not apply to admin
+    # 15+ option is used as unlimited
+    return false if current_user&.has_role?(:admin) || limit == 15
+
+    current_user.rooms.count >= limit
+  end
 end

app/helpers/admins_helper.rb

@@ -53,4 +53,8 @@ module AdminsHelper
         I18n.t("administrator.site_settings.registration.methods.approval")
       end
   end
+
+  def room_limit_number
+    Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Limit").to_i
+  end
 end

app/helpers/rooms_helper.rb

@@ -27,4 +27,26 @@ module RoomsHelper
     Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Authentication") == "true" &&
       current_user.nil?
   end
+
+  def number_of_rooms_allowed
+    Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Limit").to_i
+  end
+
+  def room_limit_exceeded
+    limit = Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Limit").to_i
+
+    # Does not apply to admin or users that aren't signed in
+    # 15+ option is used as unlimited
+    return false if !current_user || current_user&.has_role?(:admin) || limit == 15
+
+    current_user.rooms.length >= limit
+  end
+
+  def current_room_exceeds_limit(room)
+    # Get how many rooms need to be deleted to reach allowed room number
+    limit = Setting.find_or_create_by!(provider: user_settings_provider).get_value("Room Limit").to_i
+    @diff = current_user.rooms.count - limit
+
+    @diff.positive? && current_user.rooms.pluck(:id).index(room.id) + 1 > limit
+  end
 end

app/models/setting.rb

@@ -41,6 +41,8 @@ class Setting < ApplicationRecord
         Rails.configuration.registration_method_default
       when "Room Authentication"
         false
+      when "Room Limit"
+        Rails.configuration.number_of_rooms_default
       end
     end
   end

app/views/rooms/show.html.erb

@@ -13,6 +13,12 @@
 # with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 %>
 
+<% exceeds_limit = current_room_exceeds_limit(@room)%>
+<% if exceeds_limit%>
+  <div class="alert alert-danger alert-dismissible text-center mb-0">
+    <%= t("room.room_limit_exceeded", difference: @diff) %>
+  </div>
+<% end %>
 <div class="background pb-1">
   <div class="container">
     <div class="row pt-9">
@@ -27,41 +33,45 @@
           <% end %>
         </div>
         <h4 class="text-left mb-6"><%= @room.sessions %> <%= t("room.sessions") %> | <%= @recordings.length %> <%= t("room.recordings") %></h4>
-        <label class="form-label"><%= t("room.invite_participants") %></label>
-        <div class="row">
-          <div class="col-lg-5 col-md-12 mt-2 pr-0">
-            <div class="input-icon invite-link-input">
-              <span class="input-icon-addon">
-                <i class="fas fa-link"></i>
-              </span>
-              <input id="invite-url" type="text" class="form-control w-100" value="<%= request.base_url + @room.invite_path %>" readonly="">
-            </div>
-          </div>
-          <div class="col-lg-7 col-md-12 pr-0">
-            <div class="row">
-              <div class="col-sm-6">
-                <a href="#" id="copy" class="btn btn-primary btn-block mt-2">
-                  <i class="fas fa-copy"></i>
-                  <%= t("copy") %>
-                </a>
+        <% unless exceeds_limit %>
+          <label class="form-label"><%= t("room.invite_participants") %></label>
+          <div class="row">
+            <div class="col-lg-5 col-md-12 mt-2 pr-0">
+              <div class="input-icon invite-link-input">
+                <span class="input-icon-addon">
+                  <i class="fas fa-link"></i>
+                </span>
+                <input id="invite-url" type="text" class="form-control w-100" value="<%= request.base_url + @room.invite_path %>" readonly="">
               </div>
-              <div class="col-sm-6 pl-0">
-                <% if Rails.configuration.enable_google_calendar_button %>
-                  <a href="<%= google_calendar_path %>" target="__blank" id="schedule" class="btn btn-primary btn-block mt-2">
-                    <i class="fas fa-calendar-plus"></i>
-                    <%= t("add_to_google_calendar") %>
+            </div>
+            <div class="col-lg-7 col-md-12 pr-0">
+              <div class="row">
+                <div class="col-sm-6">
+                  <a href="#" id="copy" class="btn btn-primary btn-block mt-2">
+                    <i class="fas fa-copy"></i>
+                    <%= t("copy") %>
                   </a>
-                <% end %>
+                </div>
+                <div class="col-sm-6 pl-0">
+                  <% if Rails.configuration.enable_google_calendar_button %>
+                    <a href="<%= google_calendar_path %>" target="__blank" id="schedule" class="btn btn-primary btn-block mt-2">
+                      <i class="fas fa-calendar-plus"></i>
+                      <%= t("add_to_google_calendar") %>
+                    </a>
+                  <% end %>
+                </div>
               </div>
             </div>
           </div>
-        </div>
+        <% end %>
       </div>
       <div class="offset-lg-1 col-lg-3 col-sm-12 force-bottom mt-5 pr-0">
         <% if @is_running %>
           <%= button_to t("room.join"), room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right" %>
         <% else %>
-          <%= button_to t("room.start"), start_room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right" %>
+          <% unless exceeds_limit %>
+            <%= button_to t("room.start"), start_room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right" %>
+          <% end %>
         <% end %>
       </div>
     </div>
@@ -82,7 +92,9 @@
           <%= render "shared/modals/delete_room_modal", room: room %>
         <% end %>
       <% end %>
-      <%= render "shared/components/create_room_block"%>
+      <% unless room_limit_exceeded %>
+        <%= render "shared/components/create_room_block"%>
+      <% end %>
     </div>
   </div>
 </div>

app/views/shared/admin_settings/_site_settings.html.erb

@@ -78,7 +78,7 @@
       </div>
     </div>
   </div>
-  <div class="row">
+  <div class="mb-6 row">
     <div class="col-12">
       <div class="form-group">
         <label class="form-label"><%= t("administrator.site_settings.authentication.title") %></label>
@@ -99,4 +99,38 @@
       </div>
     </div>
   </div>
+  <div class="row">
+    <div class="col-12">
+      <div class="form-group">
+        <label class="form-label"><%= t("administrator.site_settings.rooms.title") %></label>
+        <label class="form-label text-muted"><%= t("administrator.site_settings.rooms.info") %></label>
+        <div class="row gutters-xs">
+          <div class="col-auto">
+            <label class="colorinput">
+              <%= button_to admin_room_limit_path(limit: 1), class: "colorinput-input" do %><% end %>
+              <span class="colorinput-color <%= room_limit_number == 1 ? "btn-primary" : "btn-outline-primary" %>">1</span>
+            </label>
+          </div>
+          <div class="col-auto">
+            <label class="colorinput">
+              <%= button_to admin_room_limit_path(limit: 5), class: "colorinput-input" do %><% end %>
+              <span class="colorinput-color <%= room_limit_number == 5 ? "btn-primary" : "btn-outline-primary" %>">5</span>
+            </label>
+          </div>
+          <div class="col-auto">
+            <label class="colorinput">
+              <%= button_to admin_room_limit_path(limit: 10), class: "colorinput-input" do %><% end %>
+              <span class="colorinput-color <%= room_limit_number == 10 ? "btn-primary" : "btn-outline-primary" %>">10</span>
+            </label>
+          </div>
+          <div class="col-auto">
+            <label class="colorinput">
+              <%= button_to admin_room_limit_path(limit: 15), class: "colorinput-input" do %><% end %>
+              <span class="colorinput-color <%= room_limit_number == 15 ? "btn-primary" : "btn-outline-primary" %>">15+</span>
+            </label>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
 </div>