Add state to gatherers and track when a gatherer has left or is away

app/assets/stylesheets/themes/default/components/_gather.scss

@@ -202,3 +202,11 @@ table.gathers {
 ul.gatherers {
   @include span-columns(12);
 }
+
+ul#gatherers {
+  li.away a {
+    font-style: italic;
+    font-weight: normal;
+    color: #5b5b5b;
+  }
+}

app/controllers/gatherers_controller.rb

@@ -32,6 +32,22 @@ class GatherersController < ApplicationController
     redirect_to_back
   end
 
+  def status
+    raise AccessError unless @gatherer.can_destroy? cuser
+
+    states = {
+      "leaving" => Gatherer::STATE_LEAVING,
+      "away" => Gatherer::STATE_AWAY,
+      "active" => Gatherer::STATE_ACTIVE,
+    }
+
+    if states.has_key?(params[:status])
+      @gatherer.update_attribute(:status, states[params[:status]])
+    end
+
+    render :nothing => true, :status => 200
+  end
+
   def destroy
     raise AccessError unless @gatherer.can_destroy? cuser
 

app/controllers/gathers_controller.rb

@@ -72,5 +72,24 @@ class GathersController < ApplicationController
     end
 
     @gatherer = @gather.gatherers.of_user(cuser).first if cuser
+    update_gatherers
+  end
+
+  def update_gatherers
+    # Update user that has left and came back
+    if @gatherer and @gatherer.status == Gatherer::STATE_LEAVING
+      @gatherer.update_attribute(:status, Gatherer::STATE_ACTIVE)
+    end
+
+    # Remove any users that left over 30 seconds ago
+    removed_users = false
+    @gather.gatherers.each do |gatherer|
+      if gatherer.status == Gatherer::STATE_LEAVING and gatherer.updated_at < Time.now - 30
+        removed_users = true
+        gatherer.destroy
+      end
+    end
+
+    @gather.reload if removed_users
   end
 end

app/models/gatherer.rb

@@ -15,6 +15,10 @@ class Gatherer < ActiveRecord::Base
   IDLE_TIME = 600
   EJECT_VOTES = 4
 
+  STATE_ACTIVE = 0
+  STATE_AWAY = 1
+  STATE_LEAVING = 2
+
   include Extra
 
   attr_protected :id

app/views/gathers/_running.html.erb

@@ -6,7 +6,7 @@
 
       <ul id="gatherers">
         <% @gather.gatherers.each do |gatherer| %>
-          <li>
+          <li<% if gatherer.status > 0 %> class="away"<% end %>>
             <%= flag gatherer.user.country %>
             <%= namelink gatherer.user %>
             <% if cuser and cuser.admin? %>

app/views/gathers/show.html.erb

@@ -1,6 +1,25 @@
 <div id="jplayer"></div>
 <script type="text/javascript">
   var played = false;
+  var leaving = true;
+  <% if @gatherer and @gatherer.can_destroy? cuser %>
+  var gatherer_id = <%= @gatherer.id %>;
+  <% else %>
+  var gatherer_id = 0;
+  <% end %>
+
+  function updateGathererStatus(status) {
+    $.ajax({
+      url: '/gatherers/' + gatherer_id + '/status',
+      type: 'POST',
+      data: {'status': status},
+      async: false,
+      cache: false,
+      success: function() {},
+      complete: function() {},
+      error: function() {}
+    });
+  }
 
   $(document).ready(function() {
     $.PeriodicalUpdater("/gathers/" + <%= @gather.id %> + ".js", {
@@ -38,6 +57,39 @@
         }
       }
     });
+
+    $(window).bind('beforeunload', function(e) {
+      if (gatherer_id > 0) {
+        return "You will be removed from the Gather if you leave this page.";
+      }
+    });
+
+    $(window).bind('unload', function() {
+      if (gatherer_id > 0) {
+        updateGathererStatus('leaving');
+      }
+    });
+
+    var afk = false;
+    var afk_timeout;
+    var afk_time = 1000 * 60 * 15; // 15 minutes
+    $(window).blur(function() {
+      afk_timeout = setTimeout(function() {
+        if (gatherer_id > 0) {
+          afk = true;
+          updateGathererStatus('away');
+        }
+      }, afk_time);
+    });
+
+    $(window).focus(function() {
+      if (afk) {
+        updateGathererStatus('active');
+        $.get("/gathers/" + <%= @gather.id %> + ".js");
+      }
+
+      clearTimeout(afk_timeout);
+    });
   });
 </script>
 
@@ -46,7 +98,7 @@
     <span>
       <%= link_to @gather do %>
         <%= @gather.category.to_s %> Gather
-      <% end %>  
+      <% end %>
     </span>
   </h1>
 

config/routes.rb

@@ -100,7 +100,9 @@ Ensl::Application.routes.draw do
 
   match 'gathers/refresh'
   match 'gathers/latest/:game', to: "gathers#latest", via: :get
-  match 'gather', to: "gathers#latest", game: "ns2", via: :get  
+  match 'gather', to: "gathers#latest", game: "ns2", via: :get
+
+  match 'gatherers/:id/status', to: "gatherers#status", via: :post
 
   match 'groups/addUser'
   match 'groups/delUser'

db/migrate/20141010193221_add_status_to_gatherer.rb

@@ -0,0 +1,5 @@
+class AddStatusToGatherer < ActiveRecord::Migration
+  def change
+		add_column :gatherers, :status, :int, null: false, default: 0
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20140810224606) do
+ActiveRecord::Schema.define(:version => 20141010193221) do
 
   create_table "admin_requests", :force => true do |t|
     t.string   "addr"
@@ -294,6 +294,7 @@ ActiveRecord::Schema.define(:version => 20140810224606) do
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "votes",      :default => 0, :null => false
+    t.integer  "status",     :default => 0, :null => false
   end
 
   add_index "gatherers", ["gather_id"], :name => "index_gatherers_on_gather_id"
@@ -758,18 +759,6 @@ ActiveRecord::Schema.define(:version => 20140810224606) do
   add_index "sessions", ["session_id"], :name => "index_sessions_on_session_id"
   add_index "sessions", ["updated_at"], :name => "index_sessions_on_updated_at"
 
-  create_table "shoutmsg_archive", :force => true do |t|
-    t.integer  "user_id"
-    t.string   "text"
-    t.datetime "created_at"
-    t.datetime "updated_at"
-    t.string   "shoutable_type"
-    t.integer  "shoutable_id"
-  end
-
-  add_index "shoutmsg_archive", ["shoutable_type", "shoutable_id"], :name => "index_shoutmsgs_on_shoutable_type_and_shoutable_id"
-  add_index "shoutmsg_archive", ["user_id"], :name => "index_shoutmsgs_on_user_id"
-
   create_table "shoutmsgs", :force => true do |t|
     t.integer  "user_id"
     t.string   "text"