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source/defs/Hookmanager/Hookmanager.php

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+<?php
+
+// The hookmanager is the web-exposed class that allows you to manage a user within the billing system.
+// This system takes care of CRUD operations on customers. It doesn't keep track of order but it does suspend 
+// you if you don't pay.
+
+class Hookmanager
+{
+    
+    public function EventSubscriptionCreated()
+    {
+        
+    }
+    
+    public function EventSubscriptionUpdated()
+    {
+        // Update user information if necessary
+    }
+    
+    public function EventSubscriptionCancelled()
+    {
+        
+        // Suspend user's domain name as stated on DB
+        // Delete after 30 days
+        
+    }
+    
+    public function EventSubscriptionPaymentSuccess()
+    {
+        
+        // Renew user's subscription within billing system
+        // Install hosting account if this is the user's first time and send out instructions email
+        
+    }
+    // TODO: Lenient business logic
+    public function EventSubscriptionPaymentFailed()
+    {
+        
+        // Add payment strike to user account
+        // After three strikes, warn user that the system has waived further attempts. Suspend their account
+        // Give user an ultimatum: Pay or remain suspended
+        // If user fails to pay during the next 7 days, permanently suspend their account (Reject further payments. Remove user from paddle first)
+        // If payment is successful afterwards, remove all payment strikes (Success logic should execute automatically)
+        
+    }
+    
+    public function EventSubscriptionPaymentRefunded()
+    {
+        // Ban customer from billing system
+        // Delete all customer data
+    }
+    
+    
+    
+}