From 78cc09cc5ab622353a84249b79e734f5b2be85b7 Mon Sep 17 00:00:00 2001
From: iagirre <itziar.agirre@m2c.es>
Date: Mon, 16 Oct 2017 17:25:04 +0200
Subject: [PATCH] Controllers and models to see the polls stats. Routes related
 also added.

---
 app/controllers/polls/stats_controller.rb | 20 +++++++++
 app/models/abilities/everyone.rb          |  1 +
 app/models/poll/stats.rb                  | 36 +++++++++++++++
 app/views/polls/show.html.erb             |  2 +
 app/views/polls/stats/show.html.erb       | 53 +++++++++++++++++++++++
 config/routes.rb                          |  2 +
 6 files changed, 114 insertions(+)
 create mode 100644 app/controllers/polls/stats_controller.rb
 create mode 100644 app/models/poll/stats.rb
 create mode 100644 app/views/polls/stats/show.html.erb

diff --git a/app/controllers/polls/stats_controller.rb b/app/controllers/polls/stats_controller.rb
new file mode 100644
index 000000000..4d6a40ff3
--- /dev/null
+++ b/app/controllers/polls/stats_controller.rb
@@ -0,0 +1,20 @@
+class Polls::StatsController < ApplicationController
+  
+  before_action :load_poll
+  load_and_authorize_resource :poll
+    
+  def show
+    authorize! :read_stats, @poll
+    @stats = load_stats
+  end
+  
+  private
+  
+    def load_stats
+      Poll::Stats.new(@poll).generate
+    end
+  
+    def load_poll
+      @poll = Poll.find_by(id: params[:id])
+    end
+end
\ No newline at end of file
diff --git a/app/models/abilities/everyone.rb b/app/models/abilities/everyone.rb
index 3004ca8ad..73f3220ab 100644
--- a/app/models/abilities/everyone.rb
+++ b/app/models/abilities/everyone.rb
@@ -23,6 +23,7 @@ module Abilities
       can [:read], Legislation::Question
       can [:create], Legislation::Answer
       can [:search, :comments, :read, :create, :new_comment], Legislation::Annotation
+      can :read_stats, Poll
     end
   end
 end
diff --git a/app/models/poll/stats.rb b/app/models/poll/stats.rb
new file mode 100644
index 000000000..823724ade
--- /dev/null
+++ b/app/models/poll/stats.rb
@@ -0,0 +1,36 @@
+class Poll
+  class Stats
+
+    def initialize(poll)
+      @poll = poll
+    end
+
+    def generate
+      stats = %w[total_participants total_participants_web total_participants_booth]
+      stats.map { |stat_name| [stat_name.to_sym, send(stat_name)] }.to_h
+    end
+
+    private
+
+      def total_participants
+        stats_cache('total_participants') { voters.uniq.count }
+      end
+
+      def total_participants_web
+        stats_cache('total_participants_web') { voters.where(origin: 'web').count }
+      end
+
+      def total_participants_booth
+        stats_cache('total_participants_booth') { voters.where(origin: 'booth').count }
+      end
+
+      def voters
+        stats_cache('voters') { @poll.voters }
+      end
+
+      def stats_cache(key, &block)
+        Rails.cache.fetch("polls_stats/#{@poll.id}/#{key}/v7", &block)
+      end
+
+  end
+end
\ No newline at end of file
diff --git a/app/views/polls/show.html.erb b/app/views/polls/show.html.erb
index 0a56ba237..2c541305d 100644
--- a/app/views/polls/show.html.erb
+++ b/app/views/polls/show.html.erb
@@ -28,6 +28,8 @@
       </aside>
     </div>
   </div>
+  
+  <%= link_to "Estadísticas", custom_poll_stats_path(@poll.id) %>
 
   <div class="row margin">
     <div class="small-12 medium-9 column">
diff --git a/app/views/polls/stats/show.html.erb b/app/views/polls/stats/show.html.erb
new file mode 100644
index 000000000..6018708c9
--- /dev/null
+++ b/app/views/polls/stats/show.html.erb
@@ -0,0 +1,53 @@
+<% cache [@stats] do %>
+  <% provide :title do %>
+    <%= t("polls.stats.page_title", poll: @poll.name) %>
+  <% end %>
+  <% provide :social_media_meta_tags do %>
+  <%= render "shared/social_media_meta_tags",
+              social_url: poll_url(@poll),
+              social_title: @poll.name,
+              social_description: @poll.description %>
+  <% end %>
+
+  <div class="budgets-stats">
+    <div class="expanded no-margin-top padding header">
+      <div class="row">
+        <div class="small-12 column text-center">
+          <%= back_link_to polls_path %>
+          <h1 class="title"><%= t("polls.stats.title") %><br><%= @poll.name %></h1>
+        </div>
+      </div>
+    </div>
+
+    <!-- Aquí se empiezan a mostrar los datos -->
+    <div class="row">
+      <div class="small-12 medium-6 column">
+        <div class="callout">
+          <span class="uppercase"><%= t("polls.stats.total_participants") %></span>
+          <p id="total_participants" class="big-number-stat budget">
+            <%= @stats[:total_participants] %>
+          </p>
+          <table>
+            <thead>
+              <tr>
+                <td>Web</td>
+                <td>Booth</td>
+              </tr>
+            </thead>
+            <tbody>
+              <tr>
+                <td><%= @stats[:total_participants_web] %></td>
+                <td><%= @stats[:total_participants_booth] %></td>
+              </tr>
+            </tbody>
+          </table>
+
+          <span class="uppercase"><%= t("polls.stats.total_votes") %></span>
+          <p class="big-number-stat budget">
+            <%= @stats[:total_votes] %>
+          </p>
+        </div>
+      </div>
+    </div>
+  </div>
+<% end %>
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 1fb74aa53..e9ae237f0 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -112,6 +112,8 @@ Rails.application.routes.draw do
     get :search, on: :collection
   end
 
+  get "polls/:id/stats", to: "polls/stats#show", as: 'custom_poll_stats'
+  
   resources :polls, only: [:show, :index] do
     resources :questions, controller: 'polls/questions', shallow: true do
       post :answer, on: :member