Add submissions chart to conferences

Gemfile

@@ -47,6 +47,8 @@ gem 'font-awesome-rails'
 
 gem 'nested_form'
 gem 'jquery-datatables-rails'
+gem 'morrisjs-rails'
+gem 'raphael-rails'
 
 group :development do
   gem 'spring'

Gemfile.lock

@@ -149,6 +149,8 @@ GEM
     mime-types (2.4.1)
     mini_portile (0.6.0)
     minitest (5.4.2)
+    morrisjs-rails (0.5.1)
+      railties (> 3.1, < 5)
     multi_json (1.10.1)
     nested_form (0.3.2)
     net-scp (1.2.1)
@@ -196,6 +198,7 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rake (10.3.2)
+    raphael-rails (2.1.2)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
@@ -301,6 +304,7 @@ DEPENDENCIES
   guard-rspec
   jquery-datatables-rails
   jquery-rails
+  morrisjs-rails
   nested_form
   pg
   phony_rails
@@ -308,6 +312,7 @@ DEPENDENCIES
   rails (= 4.1.6)
   rails-erd
   rails-i18n
+  raphael-rails
   rmagick
   rspec-rails
   sass-rails (~> 4.0.3)

app/assets/javascripts/management/application.js

@@ -5,4 +5,6 @@
 //= require dataTables/bootstrap/3/jquery.dataTables.bootstrap
 //= require bootstrap-sprockets
 //= require metisMenu/metisMenu
+//= require raphael
+//= require morris
 //= require_directory .

app/assets/javascripts/management/conferences.js.coffee

@@ -0,0 +1,9 @@
+$ ->
+        Morris.Line
+                element: 'submissions-chart'
+                data: $('#submissions-chart').data('submissions')
+                xkey: 'created_at'
+                ykeys: ['all_submissions', 'all_confirmations']
+                labels: ['Submissions', 'Confirmed submissions']
+                lineColors: ['#D9230F', '#469408']
+                resize: true

app/assets/stylesheets/management/application.css.scss

@@ -7,6 +7,7 @@
 @import "metisMenu/metisMenu";
 @import "dataTables/jquery.dataTables";
 @import "dataTables/bootstrap/3/jquery.dataTables.bootstrap";
+@import "morris";
 
 @import "layout";
 @import "navigation";

app/helpers/conferences_helper.rb

@@ -0,0 +1,31 @@
+module ConferencesHelper
+  def submissions_chart_data(conference)
+    submissions_by_day = conference.submissions_grouped_by_day
+    confirmed_by_day = conference.submissions_grouped_by_confirmation_day
+    start_date = conference.created_at.to_date
+    end_date = Time.zone.now.to_date < conference.start_date.to_date ? Time.zone.now.to_date : conference.start_date.to_date
+
+    chart_data = (start_date..end_date).map do |date|
+      {
+        created_at: date,
+        new_submissions: submissions_by_day[date].try(:first).try(:number) || 0,
+        new_confirmations: confirmed_by_day[date].try(:first).try(:number) || 0
+      }
+    end
+
+    chart_data.each_with_index do |entry, index|
+      entry[:all_submissions] = if index == 0
+                      entry[:new_submissions]
+                    else
+                      chart_data[index - 1][:all_submissions] + entry[:new_submissions]
+                    end
+
+      entry[:all_confirmations] = if index == 0
+                                entry[:new_confirmations]
+                              else
+                                chart_data[index - 1][:all_confirmations] + entry[:new_confirmations]
+                              end
+    end
+    chart_data
+  end
+end

app/models/conference.rb

@@ -23,6 +23,20 @@ class Conference < ActiveRecord::Base
     future.first || last
   end
 
+  def submissions_grouped_by_day
+    submissions = Event.where(track: tracks, created_at: created_at..start_date)
+    submissions = submissions.group('date(created_at)')
+    submissions = submissions.select('created_at, count(id) as number')
+    submissions.group_by { |s| s.created_at.to_date }
+  end
+
+  def submissions_grouped_by_confirmation_day
+    submissions = Event.approved.where(track: tracks, created_at: created_at..start_date).where.not(confirmed_at: nil)
+    submissions = submissions.group('date(confirmed_at)')
+    submissions = submissions.select('confirmed_at, count(id) as number')
+    submissions.group_by { |s| s.confirmed_at.to_date }
+  end
+
   private
 
   def close_all_other_calls_for_papers

app/views/management/conferences/show.html.slim

@@ -69,3 +69,6 @@
           span.pull-left = t 'views.conference.see_details'
           span.pull-right = fa_icon 'arrow-circle-right'
           span.clearfix
+.row
+  .col-lg-12
+    .submissions-chart#submissions-chart data-submissions="#{submissions_chart_data(@conference).to_json}"