Implemented server-side analytics tracking for revenue

app/Http/Controllers/PaymentController.php

@@ -477,6 +477,7 @@ class PaymentController extends BaseController
                 if ($account->account_key == NINJA_ACCOUNT_KEY) {
                     Session::flash('trackEventCategory', '/account');
                     Session::flash('trackEventAction', '/buy_pro_plan');
+                    Session::flash('trackEventAmount', $payment->amount);
                 }
 
                 return Redirect::to('view/'.$payment->invitation->invitation_key);

app/Http/routes.php

@@ -572,6 +572,7 @@ if (!defined('CONTACT_EMAIL')) {
     define('REFERRAL_PROGRAM_URL', env('REFERRAL_PROGRAM_URL', 'https://www.invoiceninja.com/referral-program/'));
     define('EMAIL_MARKUP_URL', env('EMAIL_MARKUP_URL', 'https://developers.google.com/gmail/markup'));
     define('OFX_HOME_URL', env('OFX_HOME_URL', 'http://www.ofxhome.com/index.php/home/directory/all'));
+    define('GOOGLE_ANALYITCS_URL', env('GOOGLE_ANALYITCS_URL', 'https://www.google-analytics.com/collect'));
 
     define('BLANK_IMAGE', 'data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=');
 
@@ -585,7 +586,6 @@ if (!defined('CONTACT_EMAIL')) {
     define('INVOICE_DESIGNS_AFFILIATE_KEY', 'T3RS74');
     define('SELF_HOST_AFFILIATE_KEY', '8S69AD');
 
-    define('PRO_PLAN_PRICE', env('PRO_PLAN_PRICE', 50));
     define('PLAN_PRICE_PRO_MONTHLY', env('PLAN_PRICE_PRO_MONTHLY', 5));
     define('PLAN_PRICE_PRO_YEARLY', env('PLAN_PRICE_PRO_YEARLY', 50));
     define('PLAN_PRICE_ENTERPRISE_MONTHLY', env('PLAN_PRICE_ENTERPRISE_MONTHLY', 10));

app/Listeners/AnalyticsListener.php

@@ -0,0 +1,54 @@
+<?php namespace App\Listeners;
+
+use Log;
+use Utils;
+use App\Events\PaymentWasCreated;
+
+class AnalyticsListener
+{
+    public function trackRevenue(PaymentWasCreated $event)
+    {
+        if ( ! Utils::isNinja() || ! env('ANALYTICS_KEY')) {
+            return;
+        }
+        
+        $payment = $event->payment;
+        $invoice = $payment->invoice;
+        $account = $payment->account;
+        
+        if ($account->account_key != NINJA_ACCOUNT_KEY) {
+            return;
+        }
+        
+        $analyticsId = env('ANALYTICS_KEY');
+        $client = $payment->client;
+        $amount = $payment->amount;
+        
+        $base = "v=1&tid={$analyticsId}&cid{$client->public_id}&cu=USD&ti={$invoice->invoice_number}";
+        
+        $url = $base . "&t=transaction&ta=ninja&tr={$amount}"; 
+        $this->sendAnalytics($url);
+        //Log::info($url);
+
+        $url = $base . "&t=item&in=plan&ip={$amount}&iq=1"; 
+        $this->sendAnalytics($url);
+        //Log::info($url);
+    }
+    
+    private function sendAnalytics($data)
+    {
+        $data = json_encode($data);
+        $curl = curl_init();
+
+        $opts = [
+            CURLOPT_URL => GOOGLE_ANALYITCS_URL,
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_POST => 'POST',
+            CURLOPT_POSTFIELDS => $data,
+        ];
+
+        curl_setopt_array($curl, $opts);
+        $response = curl_exec($curl);
+        curl_close($curl);
+    }
+}

app/Models/Invoice.php

@@ -799,7 +799,6 @@ class Invoice extends EntityModel implements BalanceAffecting
         $invitation = $this->invitations[0];
         $link = $invitation->getLink('view', true);
         $key = env('PHANTOMJS_CLOUD_KEY');
-        $curl = curl_init();
         
         if (Utils::isNinjaDev()) {
             $link = env('TEST_LINK');

app/Providers/EventServiceProvider.php

@@ -98,6 +98,7 @@ class EventServiceProvider extends ServiceProvider {
             'App\Listeners\SubscriptionListener@createdPayment',
             'App\Listeners\InvoiceListener@createdPayment',
             'App\Listeners\NotificationListener@createdPayment',
+            'App\Listeners\AnalyticsListener@trackRevenue',
         ],
         'App\Events\PaymentWasArchived' => [
             'App\Listeners\ActivityListener@archivedPayment',

resources/views/master.blade.php

@@ -177,9 +177,8 @@
         }); 
 
         @if (Session::has('trackEventCategory') && Session::has('trackEventAction'))
-            trackEvent('{{ session('trackEventCategory') }}', '{{ session('trackEventAction') }}');
             @if (Session::get('trackEventAction') === '/buy_pro_plan')
-                window._fbq.push(['track', '{{ env('FACEBOOK_PIXEL_BUY_PRO') }}', {'value':'{{ PRO_PLAN_PRICE }}.00','currency':'USD'}]);
+                window._fbq.push(['track', '{{ env('FACEBOOK_PIXEL_BUY_PRO') }}', {'value':'{{ session('trackEventAmount') }}','currency':'USD'}]);
             @endif
         @endif