checkout-process.bpmn

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
             xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
             xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI"
             id="Definitions_Checkout"
             targetNamespace="http://tovuty.co.ke/bpmn">
  <process id="MobileFirst_Checkout_Process" name="Mobile-first Checkout Process" isExecutable="true">
    <laneSet id="LaneSet_Checkout">
      <lane id="Lane_Customer" name="Customer"/>
      <lane id="Lane_Frontend" name="WordPress PWA Frontend"/>
      <lane id="Lane_WooCommerce" name="WooCommerce Backend"/>
      <lane id="Lane_MpesaAPI" name="M-PESA API"/>
    </laneSet>
    <startEvent id="StartEvent_CheckoutInitiated" name="Checkout Initiated"/>
    <task id="Task_DisplayCheckoutForm" name="Display Checkout Form (Mobile-first PWA theme)"/>
    <task id="Task_EnterMobileNumber" name="Enter Mobile Number"/>
    <task id="Task_EnterShippingDetails" name="Enter Shipping Address"/>
    <task id="Task_ReviewOrderSummary" name="Review Cart & Order Summary"/>
    <task id="Task_ConfirmOrder" name="Confirm Order"/>
    <task id="Task_InitiateSTKPush" name="Initiate M-PESA STK Push (WooCommerce Plugin)"/>
    <intermediateCatchEvent id="IntermediateCatchEvent_PaymentResponse" name="Wait for M-PESA Confirmation">
      <messageEventDefinition/>
    </intermediateCatchEvent>
    <exclusiveGateway id="Gateway_PaymentResult" name="Payment Successful?"/>
    <task id="Task_GenerateOrder" name="Generate WooCommerce Order Record"/>
    <task id="Task_SendConfirmation" name="Send Order Confirmation (Email/WhatsApp)"/>
    <endEvent id="EndEvent_OrderConfirmed" name="Order Confirmed"/>
    <task id="Task_NotifyFailure" name="Notify Payment Failure"/>
    <exclusiveGateway id="Gateway_RetryPayment" name="Retry Payment?"/>
    <endEvent id="EndEvent_CheckoutCancelled" name="Checkout Cancelled"/>

    <!-- Sequence Flows -->
    <sequenceFlow id="Flow_1" sourceRef="StartEvent_CheckoutInitiated" targetRef="Task_DisplayCheckoutForm"/>
    <sequenceFlow id="Flow_2" sourceRef="Task_DisplayCheckoutForm" targetRef="Task_EnterMobileNumber"/>
    <sequenceFlow id="Flow_3" sourceRef="Task_EnterMobileNumber" targetRef="Task_EnterShippingDetails"/>
    <sequenceFlow id="Flow_4" sourceRef="Task_EnterShippingDetails" targetRef="Task_ReviewOrderSummary"/>
    <sequenceFlow id="Flow_5" sourceRef="Task_ReviewOrderSummary" targetRef="Task_ConfirmOrder"/>
    <sequenceFlow id="Flow_6" sourceRef="Task_ConfirmOrder" targetRef="Task_InitiateSTKPush"/>
    <sequenceFlow id="Flow_7" sourceRef="Task_InitiateSTKPush" targetRef="IntermediateCatchEvent_PaymentResponse"/>
    <sequenceFlow id="Flow_8" sourceRef="IntermediateCatchEvent_PaymentResponse" targetRef="Gateway_PaymentResult"/>
    <sequenceFlow id="Flow_9" sourceRef="Gateway_PaymentResult" targetRef="Task_GenerateOrder">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${paymentSuccess}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="Flow_10" sourceRef="Task_GenerateOrder" targetRef="Task_SendConfirmation"/>
    <sequenceFlow id="Flow_11" sourceRef="Task_SendConfirmation" targetRef="EndEvent_OrderConfirmed"/>
    <sequenceFlow id="Flow_12" sourceRef="Gateway_PaymentResult" targetRef="Task_NotifyFailure">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!paymentSuccess}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="Flow_13" sourceRef="Task_NotifyFailure" targetRef="Gateway_RetryPayment"/>
    <sequenceFlow id="Flow_14" sourceRef="Gateway_RetryPayment" targetRef="Task_InitiateSTKPush">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${retry}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="Flow_15" sourceRef="Gateway_RetryPayment" targetRef="EndEvent_CheckoutCancelled">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!retry}]]></conditionExpression>
    </sequenceFlow>
  </process>
</definitions>