Add email counts to admin dashboard

app/assets/javascripts/admin/templates/dashboard.js.handlebars

@@ -79,6 +79,7 @@
         {{ render 'admin_report_posts' posts }}
         {{ render 'admin_report_likes' likes }}
         {{ render 'admin_report_flags' flags }}
+        {{ render 'admin_report_emails' emails }}
       {{/unless}}
     </table>
   </div>

app/assets/javascripts/admin/views/report/admin_report_emails_view.js

@@ -0,0 +1,4 @@
+Discourse.AdminReportEmailsView = Discourse.View.extend({
+  templateName: 'admin/templates/reports/summed_counts_report',
+  tagName: 'tbody'
+});

app/controllers/admin/dashboard_controller.rb

@@ -3,7 +3,7 @@ class Admin::DashboardController < Admin::AdminController
 
   def index
     render_json_dump({
-      reports: ['visits', 'signups', 'topics', 'posts', 'flags', 'users_by_trust_level', 'likes'].map { |type| Report.find(type) },
+      reports: ['visits', 'signups', 'topics', 'posts', 'flags', 'users_by_trust_level', 'likes', 'emails'].map { |type| Report.find(type) },
       total_users: User.count
     }.merge(
       SiteSetting.version_checks? ? {version_check: DiscourseUpdates.check_version} : {}

app/models/email_log.rb

@@ -7,4 +7,8 @@ class EmailLog < ActiveRecord::Base
     # Update last_emailed_at if the user_id is present
     User.update_all("last_emailed_at = CURRENT_TIMESTAMP", id: user_id) if user_id.present?
   end
+
+  def self.count_per_day(since = 30.days.ago)
+    where('created_at > ?', since).group('date(created_at)').order('date(created_at)').count
+  end
 end

app/models/report.rb

@@ -98,6 +98,14 @@ class Report
     end
   end
 
+  def self.report_emails(report)
+    report.data = []
+    fetch report do
+      EmailLog.count_per_day(30.days.ago).each do |date, count|
+        report.data << {x: date, y: count}
+      end
+    end
+  end
 
   private
 

config/locales/server.en.yml

@@ -279,6 +279,10 @@ en:
       title: "Users per Trust Level"
       xaxis: "Trust Level"
       yaxis: "Number of Users"
+    emails:
+      title: "Emails Sent"
+      xaxis: "Day"
+      yaxis: "Number of Emails"
 
   site_settings:
     default_locale: "The default language of this Discourse instance (ISO 639-1 Code)"

spec/fabricators/email_log_fabricator.rb

@@ -0,0 +1,5 @@
+Fabricator(:email_log,) do
+  user
+  to_address { sequence(:address) { |i| "blah#{i}@example.com" } }
+  email_type :invite
+end

spec/models/report_spec.rb

@@ -26,7 +26,7 @@
 #     end
 #   end
 
-#   [:signup, :topic, :post, :flag, :like].each do |arg|
+#   [:signup, :topic, :post, :flag, :like, :email].each do |arg|
 #     describe "#{arg} report" do
 #       pluralized = arg.to_s.pluralize
 
@@ -40,7 +40,14 @@
 
 #       context "with #{pluralized}" do
 #         before do
-#           fabricator = (arg == :signup ? :user : arg)
+#           fabricator = case arg
+#           when :signup
+#             :user
+#           when :email
+#             :email_log
+#           else
+#             arg
+#           end
 #           Fabricate(fabricator, created_at: 25.hours.ago)
 #           Fabricate(fabricator, created_at: 1.hours.ago)
 #           Fabricate(fabricator, created_at: 1.hours.ago)