From e8f9f039502734c7e5f9efa6c338f89e9d76f2fc Mon Sep 17 00:00:00 2001
From: Glauber Silva <glauber.silva@givewp.com>
Date: Fri, 24 May 2024 15:51:21 -0300
Subject: [PATCH] feature: add initial classes for an off-site gateway sample

---
 give-addon-boilerplate.php                    |   2 +
 .../OffSiteGatewayPayment.php                 |  27 +++
 .../OffSiteGatewayWebhookNotification.php     |  23 ++
 src/OffSiteGateway/Gateway/OffSiteGateway.php | 226 ++++++++++++++++++
 .../OffSiteGatewayServiceProvider.php         |  37 +++
 5 files changed, 315 insertions(+)
 create mode 100644 src/OffSiteGateway/DataTransferObjects/OffSiteGatewayPayment.php
 create mode 100644 src/OffSiteGateway/DataTransferObjects/OffSiteGatewayWebhookNotification.php
 create mode 100644 src/OffSiteGateway/Gateway/OffSiteGateway.php
 create mode 100644 src/OffSiteGateway/OffSiteGatewayServiceProvider.php

diff --git a/give-addon-boilerplate.php b/give-addon-boilerplate.php
index 706d56f..7a7a5cd 100644
--- a/give-addon-boilerplate.php
+++ b/give-addon-boilerplate.php
@@ -5,6 +5,7 @@
 use GiveAddon\Addon\Environment;
 use GiveAddon\Domain\AddonServiceProvider;
 use GiveAddon\FormExtension\FormExtensionServiceProvider;
+use GiveAddon\OffSiteGateway\OffSiteGatewayServiceProvider;
 
 /**
  * Plugin Name:         ADDON_NAME
@@ -52,6 +53,7 @@ function () {
         if (Environment::giveMinRequiredVersionCheck()) {
             give()->registerServiceProvider(AddonServiceProvider::class);
             give()->registerServiceProvider(FormExtensionServiceProvider::class);
+            give()->registerServiceProvider(OffSiteGatewayServiceProvider::class);
         }
     }
 );
diff --git a/src/OffSiteGateway/DataTransferObjects/OffSiteGatewayPayment.php b/src/OffSiteGateway/DataTransferObjects/OffSiteGatewayPayment.php
new file mode 100644
index 0000000..bad0d7c
--- /dev/null
+++ b/src/OffSiteGateway/DataTransferObjects/OffSiteGatewayPayment.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace GiveAddon\OffSiteGateway\DataTransferObjects;
+
+class OffSiteGatewayPayment
+{
+
+    /**
+     * @var string
+     */
+    public $id;
+
+    /**
+     * @var string
+     */
+    public $checkoutUrl;
+
+    public static function fromArray(array $data): OffSiteGatewayPayment
+    {
+        $self = new self();
+
+        $self->id = $data['id'] ?? '';
+        $self->checkoutUrl = $data['checkoutUrl'] ?? '';
+
+        return $self;
+    }
+}
diff --git a/src/OffSiteGateway/DataTransferObjects/OffSiteGatewayWebhookNotification.php b/src/OffSiteGateway/DataTransferObjects/OffSiteGatewayWebhookNotification.php
new file mode 100644
index 0000000..08ecf42
--- /dev/null
+++ b/src/OffSiteGateway/DataTransferObjects/OffSiteGatewayWebhookNotification.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace GiveAddon\OffSiteGateway\DataTransferObjects;
+
+/**
+ * @unreleased
+ */
+class OffSiteGatewayWebhookNotification
+{
+    /**
+     * @var string
+     */
+    public $notificationType;
+
+    public static function fromArray(array $data): OffSiteGatewayWebhookNotification
+    {
+        $self = new self();
+
+        $self->notificationType = $data['notification_type'] ?? '';
+
+        return $self;
+    }
+}
diff --git a/src/OffSiteGateway/Gateway/OffSiteGateway.php b/src/OffSiteGateway/Gateway/OffSiteGateway.php
new file mode 100644
index 0000000..87e4efe
--- /dev/null
+++ b/src/OffSiteGateway/Gateway/OffSiteGateway.php
@@ -0,0 +1,226 @@
+<?php
+
+namespace GiveAddon\OffSiteGateway\Gateway;
+
+use Exception;
+use Give\Donations\Models\Donation;
+use Give\Donations\Models\DonationNote;
+use Give\Donations\ValueObjects\DonationStatus;
+use Give\Framework\Http\Response\Types\RedirectResponse;
+use Give\Framework\PaymentGateways\Commands\RedirectOffsite;
+use Give\Framework\PaymentGateways\Exceptions\PaymentGatewayException;
+use Give\Framework\PaymentGateways\PaymentGateway;
+use GiveAddon\OffSiteGateway\DataTransferObjects\OffSiteGatewayPayment;
+
+/**
+ * @unreleased
+ */
+class OffSiteGateway extends PaymentGateway
+{
+    /**
+     * @unreleased
+     */
+    public $secureRouteMethods = [
+        'handleSuccessPaymentReturn',
+        'handleCanceledPaymentReturn',
+    ];
+
+    /**
+     * @unreleased
+     */
+    public $routeMethods = [
+        'webhookNotificationsListener',
+    ];
+
+    /**
+     * @unreleased
+     */
+    public function getWebhookNotificationsListener(): string
+    {
+        return $this->routeMethods[0];
+    }
+
+    /**
+     * @unreleased
+     */
+    public static function id(): string
+    {
+        return 'ADDON_ID-off-site-gateway';
+    }
+
+    /**
+     * @unreleased
+     */
+    public function getId(): string
+    {
+        return self::id();
+    }
+
+    /**
+     * @unreleased
+     */
+    public function getName(): string
+    {
+        return __('ADDON_NAME - Off-Site Gateway', 'ADDON_TEXTDOMAIN');
+    }
+
+    /**
+     * @unreleased
+     */
+    public function getPaymentMethodLabel(): string
+    {
+        return __('ADDON_NAME - Off-Site Gateway', 'ADDON_TEXTDOMAIN');
+    }
+
+    /**
+     * @unreleased
+     */
+    public function getLegacyFormFieldMarkup(int $formId, array $args): string
+    {
+        return '<p>The Off-Site Gateway Logo Goes Here...</p>';
+    }
+
+    /**
+     * @unreleased
+     *
+     * @throws Exception
+     */
+    public function createPayment(Donation $donation, $gatewayData): RedirectOffsite
+    {
+        try {
+            $paymentParameters = $this->getPaymentParameters($donation, $gatewayData);
+            $payment = $this->createGiveAddonOffSiteGatewayPayment($donation, $paymentParameters);
+            $donation->gatewayTransactionId = $payment->id;
+            $donation->save();
+
+            return new RedirectOffsite($payment->checkoutUrl);
+        } catch (Exception $e) {
+            $donation->status = DonationStatus::FAILED();
+            $donation->save();
+
+            $errorMessage = $e->getMessage();
+
+            DonationNote::create([
+                'donationId' => $donation->id,
+                'content' => sprintf(esc_html__('Donation failed. Reason: %s', 'ADDON_TEXTDOMAIN'), $errorMessage),
+            ]);
+
+            throw new PaymentGatewayException($errorMessage);
+        }
+    }
+
+    /**
+     * @unreleased
+     */
+    public function refundDonation(Donation $donation)
+    {
+        // TODO: Implement refundDonation() method.
+    }
+
+    /**
+     * @unreleased
+     */
+    public function getPaymentParameters(Donation $donation, $gatewayData): array
+    {
+        return [
+            'amount' => [
+                'value' => $donation->amount->formatToDecimal(),
+                'currency' => $donation->amount->getCurrency()->getCode(),
+            ],
+            //'description' => MollieApi::getPaymentDescription($donation),
+            'returnUrl' => $this->getPaymentsReturnURL($donation, $gatewayData),
+            'cancelUrl' => $this->getPaymentsCancelURL($donation, $gatewayData),
+            'webhookUrl' => $this->getPaymentsWebhookUrl($donation),
+        ];
+    }
+
+    /**
+     * @param Donation $donation
+     * @param array    $paymentParameters
+     *
+     * @return OffSiteGatewayPayment
+     */
+    protected function createGiveAddonOffSiteGatewayPayment(
+        Donation $donation,
+        array $paymentParameters
+    ): OffSiteGatewayPayment {
+        return OffSiteGatewayPayment::fromArray([
+            'id' => 'payment-id',
+            'checkoutUrl' => 'https://example.com/',
+        ]);
+    }
+
+    /**
+     * @unreleased
+     *
+     * @throws Exception
+     */
+    protected function handleSuccessPaymentReturn(array $queryParams): RedirectResponse
+    {
+        $donation = Donation::find((int)$queryParams['donation-id']);
+
+        $donation->status = DonationStatus::COMPLETE();
+        $donation->save();
+
+        return new RedirectResponse(esc_url_raw($queryParams['givewp-return-url']));
+    }
+
+    /**
+     * @unreleased
+     *
+     * @throws Exception
+     */
+    protected function handleCanceledPaymentReturn(array $queryParams): RedirectResponse
+    {
+        $donation = Donation::find((int)$queryParams['donation-id']);
+
+        $donation->status = DonationStatus::CANCELLED();
+        $donation->save();
+
+        return new RedirectResponse(esc_url_raw($queryParams['givewp-return-url']));
+    }
+
+    /**
+     * @unreleased
+     */
+    private function getPaymentsReturnURL(Donation $donation, $gatewayData): string
+    {
+        return $this->generateSecureGatewayRouteUrl(
+            'handleSuccessPaymentReturn',
+            $donation->id,
+            [
+                'donation-id' => $donation->id,
+                'givewp-return-url' => $gatewayData['successUrl'],
+            ]
+        );
+    }
+
+    /**
+     * @unreleased
+     */
+    private function getPaymentsCancelURL(Donation $donation, $gatewayData): string
+    {
+        return $this->generateSecureGatewayRouteUrl(
+            'handleCanceledPaymentReturn',
+            $donation->id,
+            [
+                'donation-id' => $donation->id,
+                'givewp-return-url' => $gatewayData['cancelUrl'],
+            ]
+        );
+    }
+
+    /**
+     * @unreleased
+     */
+    private function getPaymentsWebhookUrl(Donation $donation): string
+    {
+        return $this->generateGatewayRouteUrl(
+            $this->getWebhookNotificationsListener(),
+            [
+                'notification_type' => 'payments',
+                'payment_id' => $donation->id,
+            ]
+        );
+    }
+}
diff --git a/src/OffSiteGateway/OffSiteGatewayServiceProvider.php b/src/OffSiteGateway/OffSiteGatewayServiceProvider.php
new file mode 100644
index 0000000..fbacce1
--- /dev/null
+++ b/src/OffSiteGateway/OffSiteGatewayServiceProvider.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace GiveAddon\OffSiteGateway;
+
+use Exception;
+use Give\Framework\PaymentGateways\PaymentGatewayRegister;
+use Give\ServiceProviders\ServiceProvider;
+use GiveAddon\OffSiteGateway\Gateway\OffSiteGateway;
+
+/**
+ * @unreleased
+ */
+class OffSiteGatewayServiceProvider implements ServiceProvider
+{
+    /**
+     * @unreleased
+     */
+    public function register()
+    {
+        // TODO: Implement register() method.
+    }
+
+    /**
+     * @unreleased
+     *
+     * @throws Exception
+     */
+    public function boot()
+    {
+        add_action(
+            'givewp_register_payment_gateway',
+            function (PaymentGatewayRegister $registrar) {
+                $registrar->registerGateway(OffSiteGateway::class);
+            }
+        );
+    }
+}