Adding new subscription routes and updating subs examples. (#142)

* Adding new subscription routes and updating subs examples.

* Updating github actions due to deprecated nodejs 20.

.github/workflows/code_style.yml

@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Run PHP CS Fixer
         uses: docker://oskarstark/php-cs-fixer-ga

.github/workflows/psalm.yml

@@ -12,7 +12,7 @@ jobs:
         php-versions: ['8.0']
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: '0'
 
@@ -27,7 +27,7 @@ jobs:
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
 
       - name: Cache composer dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}

.gitignore

@@ -3,4 +3,5 @@
 .php-cs-fixer.cache
 *.cache
 composer.lock
-/tests/.env
+/tests/.env
+/.claude/

examples/payout_usage.php

@@ -43,7 +43,7 @@ class PullPayments
         $autoApproveClaims = false;
         $startsAt = null;
         $expiresAt = null;
-        $paymentMethods = ['BTC'];
+        $paymentMethods = ['BTC-CHAIN'];
 
         try {
             $client = new PullPayment($this->host, $this->apiKey);
@@ -163,7 +163,7 @@ class PullPayments
         $pullPaymentId = '';
         $destination = '';
         $amount = PreciseNumber::parseString('0.000001');
-        $paymentMethod = '';
+        $paymentMethod = 'BTC-CHAIN';
 
         try {
             $client = new PullPayment($this->host, $this->apiKey);

examples/subscriptions.php

@@ -0,0 +1,242 @@
+<?php
+
+// Include autoload file.
+require __DIR__ . '/../vendor/autoload.php';
+
+// Import Subscriptions client class.
+use BTCPayServer\Client\Subscriptions;
+
+// Fill in with your BTCPay Server data.
+$apiKey = '';
+$host = ''; // e.g. https://your.btcpay-server.tld
+$storeId = '';
+
+// Create the subscriptions client.
+try {
+    $client = new Subscriptions($host, $apiKey);
+
+    echo "=== BTCPay Server Subscriptions API Examples ===\n\n";
+
+    // 1. Create a new offering
+    echo "1. Creating a new offering...\n";
+    $offering = $client->createOffering(
+        $storeId,
+        'Premium SaaS App',
+        'https://example.com/success',
+        [
+            'category' => 'saas',
+            'region' => 'us',
+            'version' => '1.0'
+        ],
+        [
+            ['id' => 'feature-analytics', 'description' => 'Advanced analytics dashboard'],
+            ['id' => 'feature-support', 'description' => '24/7 priority support'],
+            ['id' => 'feature-api', 'description' => 'Unlimited API access']
+        ]
+    );
+    echo "Offering created with ID: " . $offering->getId() . "\n";
+    echo "App Name: " . $offering->getAppName() . "\n\n";
+
+    $offeringId = $offering->getId();
+
+    // 2. Create plans for the offering
+    echo "2. Creating plans for the offering...\n";
+
+    // Basic plan
+    $basicPlan = $client->createOfferingPlan(
+        $storeId,
+        $offeringId,
+        'Basic monthly subscription with essential features',
+        'USD',
+        7,
+        'Basic Plan',
+        true,
+        '1.99',
+        true,
+        null,
+        ['tier' => 'basic'],
+        'Monthly',
+        ['feature-analytics']
+    );
+    echo "Basic plan created with ID: " . $basicPlan->getId() . "\n";
+
+    // Premium plan
+    $premiumPlan = $client->createOfferingPlan(
+        $storeId,
+        $offeringId,
+        'Premium monthly subscription with all features',
+        'USD',
+        7,
+        'Premium Plan',
+        true,
+        '29.99',
+        true,
+        14,
+        ['tier' => 'premium'],
+        'Monthly',
+        ['feature-analytics', 'feature-support', 'feature-api']
+    );
+    echo "Premium plan created with ID: " . $premiumPlan->getId() . "\n\n";
+
+    $basicPlanId = $basicPlan->getId();
+    $premiumPlanId = $premiumPlan->getId();
+
+    // 2b. Update the offering
+    echo "2b. Updating the offering...\n";
+    $updatedOffering = $client->updateOffering(
+        $storeId,
+        $offeringId,
+        'Premium SaaS App v2',
+        'https://example.com/success-v2',
+        ['category' => 'saas', 'region' => 'eu', 'version' => '2.0']
+    );
+    echo "Offering updated: " . $updatedOffering->getAppName() . "\n\n";
+
+    // 2c. Update a plan
+    echo "2c. Updating the basic plan...\n";
+    $updatedPlan = $client->updateOfferingPlan(
+        $storeId,
+        $offeringId,
+        $basicPlanId,
+        'Updated basic monthly subscription',
+        'USD',
+        7,
+        'Basic Plan v2',
+        null,
+        '2.99'
+    );
+    echo "Plan updated: " . $updatedPlan->getName() . " - " . $updatedPlan->getPrice() . " " . $updatedPlan->getCurrency() . "\n\n";
+
+    // 3. Get all offerings for the store
+    echo "3. Getting all offerings for the store...\n";
+    $offerings = $client->getOfferings($storeId);
+    foreach ($offerings->all() as $off) {
+        echo "- Offering: " . $off->getAppName() . " (ID: " . $off->getId() . ")\n";
+        foreach ($off->getPlans() as $plan) {
+            echo "  - Plan: " . $plan->getName() . " - " . $plan->getPrice() . " " . $plan->getCurrency() . "/" . $plan->getRecurringType() . "\n";
+        }
+    }
+    echo "\n";
+
+    // 4. Get a specific offering
+    echo "4. Getting specific offering details...\n";
+    $specificOffering = $client->getOffering($storeId, $offeringId);
+    echo "Offering: " . $specificOffering->getAppName() . "\n";
+    echo "Success URL: " . $specificOffering->getSuccessRedirectUrl() . "\n";
+    echo "Number of plans: " . count($specificOffering->getPlans()) . "\n\n";
+
+    // 5. Get a specific plan
+    echo "5. Getting specific plan details...\n";
+    $specificPlan = $client->getOfferingPlan($storeId, $offeringId, $basicPlanId);
+    echo "Plan: " . $specificPlan->getName() . "\n";
+    echo "Price: " . $specificPlan->getPrice() . " " . $specificPlan->getCurrency() . "\n";
+    echo "Trial Days: " . $specificPlan->getTrialDays() . "\n";
+    echo "Features: " . implode(', ', $specificPlan->getFeatures()) . "\n\n";
+
+    // 6. Create a plan checkout session
+    echo "6. Creating a plan checkout session...\n";
+    $checkout = $client->createPlanCheckout(
+        $storeId,
+        $offeringId,
+        $basicPlanId,
+        null, // If the customer already exists on BTCPay, fill the email or other id here.
+        60,
+        'SoftMigration',
+        ['source' => 'web'],
+        ['campaign' => 'summer2026'],
+        ['flow' => 'new_signup'],
+        false,
+        null, // You can override the plan price here if you want to force more credit or custom amount.
+        'https://example.com/welcome',
+        'test@example.com' // This is optional and will prefill the checkout page with the email.
+    );
+    echo "Checkout created with ID: " . $checkout->getId() . "\n";
+    echo "Checkout URL: " . $checkout->getUrl() . "\n";
+    echo "Is Trial: " . ($checkout->isTrial() ? 'Yes' : 'No') . "\n";
+    echo "New Subscriber: " . ($checkout->isNewSubscriber() ? 'Yes' : 'No') . "\n\n";
+
+    $checkoutId = $checkout->getId();
+
+    // 7. Get plan checkout details
+    echo "7. Getting plan checkout details...\n";
+    $checkoutDetails = $client->getPlanCheckout($checkoutId);
+    echo "Checkout ID: " . $checkoutDetails->getId() . "\n";
+    echo "Plan: " . $checkoutDetails->getPlan()->getName() . "\n";
+    $subscriber = $checkoutDetails->getSubscriber();
+    if ($subscriber && $subscriber->getCustomer()->getIdentities()) {
+        echo "Subscriber Email: " . ($subscriber->getCustomer()->getIdentities()['Email'] ?? 'N/A') . "\n";
+    }
+    echo "\n";
+
+    // 8. Subscriber management examples
+    /*
+    // Fill these variables with actual values to test subscriber operations
+    $offeringId = ''; // e.g. "offering_GFbMSBpybM6i5uEiqc"
+    $customerSelector = ''; // e.g. "ps_N71XxcPDnKNgNDxKHZ" or customer email
+    $suspensionReason = 'User requested cancellation';
+
+    if (!empty($storeId) && !empty($offeringId) && !empty($customerSelector)) {
+        try {
+            // Get subscriber details
+            echo "8. Getting subscriber details...\n";
+            $subscriber = $client->getSubscriber($storeId, $offeringId, $customerSelector);
+            echo "Customer ID: " . $subscriber->getCustomer()->getId() . "\n";
+            echo "Active: " . ($subscriber->isActive() ? 'Yes' : 'No') . "\n";
+            echo "Phase: " . $subscriber->getPhase() . "\n";
+            echo "Created: " . date('Y-m-d H:i:s', $subscriber->getCreated()) . "\n";
+            echo "\n";
+
+            // Suspend subscriber
+            if (!empty($suspensionReason)) {
+                echo "9. Suspending subscriber...\n";
+                $client->suspendSubscriber($storeId, $offeringId, $customerSelector, $suspensionReason);
+                echo "Subscriber suspended successfully!\n";
+
+                // Check status after suspension
+                $suspendedSubscriber = $client->getSubscriber($storeId, $offeringId, $customerSelector);
+                echo "Status after suspension: " . ($suspendedSubscriber->isActive() ? 'Active' : 'Suspended') . "\n";
+                echo "Suspension reason: " . ($suspendedSubscriber->getSuspensionReason() ?? 'N/A') . "\n\n";
+
+                // Update subscriber dates
+                echo "9b. Updating subscriber dates...\n";
+                $updatedSubscriber = $client->updateSubscriberDates(
+                    $storeId,
+                    $offeringId,
+                    $customerSelector,
+                    null,
+                    time() + (30 * 24 * 60 * 60) // 30 days from now
+                );
+                echo "Subscriber expiration updated\n";
+                echo "Scheduled plan: " . ($updatedSubscriber->getScheduledPlan() ? $updatedSubscriber->getScheduledPlan()->getName() : 'None') . "\n";
+                echo "Scheduled plan activates at: " . ($updatedSubscriber->getScheduledPlanActivatesAt() ? date('Y-m-d H:i:s', $updatedSubscriber->getScheduledPlanActivatesAt()) : 'N/A') . "\n\n";
+
+                // Unsuspend subscriber
+                echo "10. Unsuspending subscriber...\n";
+                $client->unsuspendSubscriber($storeId, $offeringId, $customerSelector);
+                echo "Subscriber unsuspended successfully!\n";
+
+                // Check status after unsuspending
+                $reactivatedSubscriber = $client->getSubscriber($storeId, $offeringId, $customerSelector);
+                echo "Status after unsuspending: " . ($reactivatedSubscriber->isActive() ? 'Active' : 'Suspended') . "\n";
+                echo "Suspension reason: " . ($reactivatedSubscriber->getSuspensionReason() ?? 'N/A') . "\n\n";
+            }
+
+            // Delete subscriber
+            echo "11. Deleting subscriber...\n";
+            $client->deleteSubscriber($storeId, $offeringId, $customerSelector);
+            echo "Subscriber deleted successfully!\n\n";
+
+        } catch (\Throwable $e) {
+            echo "Error in subscriber management: " . $e->getMessage() . "\n";
+        }
+    } else {
+        echo "8. Subscriber management examples skipped - please fill in storeId, offeringId, and customerSelector variables\n";
+    }
+    */
+
+    echo "=== Examples completed successfully! ===\n";
+
+} catch (\Throwable $e) {
+    echo "Error: " . $e->getMessage() . "\n";
+    echo "Stack trace:\n" . $e->getTraceAsString() . "\n";
+}

src/Client/AbstractClient.php

@@ -22,7 +22,7 @@ class AbstractClient
     /** @var ClientInterface */
     private $httpClient;
 
-    public function __construct(string $baseUrl, string $apiKey, ClientInterface $client = null)
+    public function __construct(string $baseUrl, string $apiKey, ?ClientInterface $client = null)
     {
         $this->baseUrl = rtrim($baseUrl, '/');
         $this->apiKey = $apiKey;

src/Client/Invoice.php

@@ -118,8 +118,8 @@ class Invoice extends AbstractClient
 
     public function getAllInvoices(
         string $storeId,
-        int $take = null,
-        int $skip = null
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         return $this->getAllInvoicesWithFilter($storeId, null, null, null, null, null, $take, $skip);
     }
@@ -127,8 +127,8 @@ class Invoice extends AbstractClient
     public function getInvoicesByOrderIds(
         string $storeId,
         array $orderIds,
-        int $take = null,
-        int $skip = null
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         return $this->getAllInvoicesWithFilter($storeId, $orderIds, null, null, null, null, $take, $skip);
     }
@@ -136,8 +136,8 @@ class Invoice extends AbstractClient
     public function getInvoicesByText(
         string $storeId,
         string $text,
-        int $take = null,
-        int $skip = null
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         return $this->getAllInvoicesWithFilter($storeId, null, $text, null, null, null, $take, $skip);
     }
@@ -145,8 +145,8 @@ class Invoice extends AbstractClient
     public function getInvoicesByStatus(
         string $storeId,
         array $status,
-        int $take = null,
-        int $skip = null
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         return $this->getAllInvoicesWithFilter($storeId, null, null, $status, null, null, $take, $skip);
     }
@@ -154,8 +154,8 @@ class Invoice extends AbstractClient
     public function getInvoicesByStartDate(
         string $storeId,
         int $startDate,
-        int $take = null,
-        int $skip = null
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         return $this->getAllInvoicesWithFilter($storeId, null, null, null, $startDate, null, $take, $skip);
     }
@@ -163,8 +163,8 @@ class Invoice extends AbstractClient
     public function getInvoicesByEndDate(
         string $storeId,
         int $endDate,
-        int $take = null,
-        int $skip = null
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         return $this->getAllInvoicesWithFilter($storeId, null, null, null, null, $endDate, $take, $skip);
     }
@@ -174,13 +174,13 @@ class Invoice extends AbstractClient
      */
     public function getAllInvoicesWithFilter(
         string $storeId,
-        array $filterByOrderIds = null,
-        string $filterByText = null,
-        array $filterByStatus = null,
-        int $filterByStartDate = null,
-        int $filterByEndDate = null,
-        int $take = null,
-        int $skip = null
+        ?array $filterByOrderIds = null,
+        ?string $filterByText = null,
+        ?array $filterByStatus = null,
+        ?int $filterByStartDate = null,
+        ?int $filterByEndDate = null,
+        ?int $take = null,
+        ?int $skip = null
     ): InvoiceList {
         $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/invoices?';
         if ($filterByOrderIds !== null) {

src/Client/PullPayment.php

@@ -244,6 +244,7 @@ class PullPayment extends AbstractClient
                 'destination' => $destination,
                 'amount' => $amount->__toString(),
                 'paymentMethod' => $paymentMethod,
+                'payoutMethodId' => $paymentMethod, // BTCPay 2.0.0 compatibilty
             ],
             JSON_THROW_ON_ERROR
         );

src/Client/StorePaymentMethodLightningNetwork.php

@@ -10,6 +10,8 @@ use BTCPayServer\Result\StorePaymentMethodLightningNetwork as ResultStorePayment
  * Handles a stores LightningNetwork payment methods.
  *
  * @see https://docs.btcpayserver.org/API/Greenfield/v1/#tag/Store-Payment-Methods-(Lightning-Network)
+ *
+ * @deprecated with BTCPay 2.0. Use \BTCPayServer\Client\StorePaymentMethod->getPaymentMethods() instead.
  */
 class StorePaymentMethodLightningNetwork extends AbstractStorePaymentMethodClient
 {

src/Client/StorePaymentMethodOnChain.php

@@ -10,6 +10,8 @@ use BTCPayServer\Result\StorePaymentMethodOnChain as ResultStorePaymentMethodOnC
  * Handles stores on chain payment methods.
  *
  * @see https://docs.btcpayserver.org/API/Greenfield/v1/#tag/Store-Payment-Methods-(On-Chain)
+ *
+ * @deprecated with BTCPay 2.0. Use \BTCPayServer\Client\StorePaymentMethod->getPaymentMethods() instead.
  */
 class StorePaymentMethodOnChain extends AbstractStorePaymentMethodClient
 {
@@ -133,7 +135,7 @@ class StorePaymentMethodOnChain extends AbstractStorePaymentMethodClient
         string $storeId,
         string $cryptoCode,
         string $derivationScheme,
-        string $accountKeyPath = null
+        ?string $accountKeyPath = null
     ): array {
         // todo: add offset + amount query parameters + check structure of derivationScheme etc.
 

src/Client/StoreRate.php

@@ -97,7 +97,7 @@ class StoreRate extends AbstractClient
 
     public function getRates(
         string $storeId,
-        array $currencyPairs = null
+        ?array $currencyPairs = null
     ): StoreRateList {
         $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/rates?';
         $headers = $this->getRequestHeaders();

src/Client/Subscriptions.php

@@ -0,0 +1,493 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Client;
+
+use BTCPayServer\Result\Credit;
+use BTCPayServer\Result\Offering;
+use BTCPayServer\Result\OfferingList;
+use BTCPayServer\Result\OfferingPlan;
+use BTCPayServer\Result\PlanCheckout;
+use BTCPayServer\Result\PortalSession;
+use BTCPayServer\Result\Subscriber;
+
+/**
+ * Handles subscriptions operations.
+ *
+ * @see https://docs.btcpayserver.org/API/Greenfield/v1/#tag/Subscriptions
+ */
+class Subscriptions extends AbstractClient
+{
+    // Offering endpoints
+
+    public function getOffering(string $storeId, string $offeringId): Offering
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId);
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new Offering(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function getOfferings(string $storeId): OfferingList
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings';
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new OfferingList(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function createOffering(
+        string $storeId,
+        ?string $appName = null,
+        ?string $successRedirectUrl = null,
+        ?array $metadata = null,
+        ?array $features = null
+    ): Offering {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings';
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $body = json_encode(
+            [
+                'appName' => $appName,
+                'successRedirectUrl' => $successRedirectUrl,
+                'metadata' => $metadata,
+                'features' => $features
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200 || $response->getStatus() === 201) {
+            return new Offering(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function updateOffering(
+        string $storeId,
+        string $offeringId,
+        ?string $appName = null,
+        ?string $successRedirectUrl = null,
+        ?array $metadata = null,
+        ?array $features = null
+    ): Offering {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId);
+        $headers = $this->getRequestHeaders();
+        $method = 'PUT';
+
+        $body = json_encode(
+            [
+                'appName' => $appName,
+                'successRedirectUrl' => $successRedirectUrl,
+                'metadata' => $metadata,
+                'features' => $features
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new Offering(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    // Plan endpoints
+
+    public function createOfferingPlan(
+        string $storeId,
+        string $offeringId,
+        ?string $description = null,
+        ?string $currency = null,
+        ?int $gracePeriodDays = null,
+        ?string $name = null,
+        ?bool $optimisticActivation = null,
+        ?string $price = null,
+        ?bool $renewable = null,
+        ?int $trialDays = null,
+        ?array $metadata = null,
+        ?string $recurringType = null,
+        ?array $features = null
+    ): OfferingPlan {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/plans';
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $body = json_encode(
+            [
+                'description' => $description,
+                'currency' => $currency,
+                'gracePeriodDays' => $gracePeriodDays,
+                'name' => $name,
+                'optimisticActivation' => $optimisticActivation,
+                'price' => $price,
+                'renewable' => $renewable,
+                'trialDays' => $trialDays,
+                'metadata' => $metadata,
+                'recurringType' => $recurringType,
+                'features' => $features
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200 || $response->getStatus() === 201) {
+            return new OfferingPlan(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function getOfferingPlan(string $storeId, string $offeringId, string $planId): OfferingPlan
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/plans/' . urlencode($planId);
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new OfferingPlan(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function updateOfferingPlan(
+        string $storeId,
+        string $offeringId,
+        string $planId,
+        ?string $description = null,
+        ?string $currency = null,
+        ?int $gracePeriodDays = null,
+        ?string $name = null,
+        ?bool $optimisticActivation = null,
+        ?string $price = null,
+        ?bool $renewable = null,
+        ?int $trialDays = null,
+        ?array $metadata = null,
+        ?string $recurringType = null,
+        ?array $features = null
+    ): OfferingPlan {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/plans/' . urlencode($planId);
+        $headers = $this->getRequestHeaders();
+        $method = 'PUT';
+
+        $body = json_encode(
+            [
+                'description' => $description,
+                'currency' => $currency,
+                'gracePeriodDays' => $gracePeriodDays,
+                'name' => $name,
+                'optimisticActivation' => $optimisticActivation,
+                'price' => $price,
+                'renewable' => $renewable,
+                'trialDays' => $trialDays,
+                'metadata' => $metadata,
+                'recurringType' => $recurringType,
+                'features' => $features
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new OfferingPlan(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    // Subscriber endpoints
+
+    public function getSubscriber(string $storeId, string $offeringId, string $customerSelector): Subscriber
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector);
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new Subscriber(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function deleteSubscriber(string $storeId, string $offeringId, string $customerSelector): void
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector);
+        $headers = $this->getRequestHeaders();
+        $method = 'DELETE';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() !== 204) {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function updateSubscriberDates(
+        string $storeId,
+        string $offeringId,
+        string $customerSelector,
+        ?int $startDate = null,
+        ?int $expirationDate = null
+    ): Subscriber {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector) . '/dates';
+        $headers = $this->getRequestHeaders();
+        $method = 'PUT';
+
+        $body = json_encode(
+            [
+                'startDate' => $startDate,
+                'expirationDate' => $expirationDate
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new Subscriber(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function suspendSubscriber(string $storeId, string $offeringId, string $customerSelector, string $reason): Subscriber
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector) . '/suspend';
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $body = json_encode(
+            [
+                'reason' => $reason
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new Subscriber(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function unsuspendSubscriber(string $storeId, string $offeringId, string $customerSelector): Subscriber
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector) . '/unsuspend';
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new Subscriber(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    // Credit endpoints
+
+    public function getCredit(string $storeId, string $offeringId, string $customerSelector, string $currency): Credit
+    {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector) . '/credits/' . urlencode($currency);
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new Credit(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function updateCredit(
+        string $storeId,
+        string $offeringId,
+        string $customerSelector,
+        string $currency,
+        ?string $credit = null,
+        ?string $charge = null,
+        ?string $description = null,
+        ?bool $allowOverdraft = null
+    ): Credit {
+        $url = $this->getApiUrl() . 'stores/' . urlencode($storeId) . '/offerings/' . urlencode($offeringId) . '/subscribers/' . urlencode($customerSelector) . '/credits/' . urlencode($currency);
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $body = json_encode(
+            [
+                'credit' => $credit,
+                'charge' => $charge,
+                'description' => $description,
+                'allowOverdraft' => $allowOverdraft
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new Credit(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    // Plan checkout endpoints
+
+    public function getPlanCheckout(string $checkoutId): PlanCheckout
+    {
+        $url = $this->getApiUrl() . 'plan-checkout/' . urlencode($checkoutId);
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new PlanCheckout(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function proceedPlanCheckout(string $checkoutId, ?string $email = null): PlanCheckout
+    {
+        $url = $this->getApiUrl() . 'plan-checkout/' . urlencode($checkoutId);
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $params = [];
+        if ($email !== null) {
+            $params['email'] = $email;
+        }
+
+        if (!empty($params)) {
+            $url .= '?' . http_build_query($params);
+        }
+
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new PlanCheckout(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function createPlanCheckout(
+        string $storeId,
+        string $offeringId,
+        string $planId,
+        ?string $customerSelector = null,
+        ?int $durationMinutes = null,
+        ?string $onPayBehavior = null,
+        ?array $newSubscriberMetadata = null,
+        ?array $invoiceMetadata = null,
+        ?array $metadata = null,
+        ?bool $isTrial = null,
+        ?string $creditPurchase = null,
+        ?string $successRedirectLink = null,
+        ?string $newSubscriberEmail = null
+    ): PlanCheckout {
+        $url = $this->getApiUrl() . 'plan-checkout';
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $body = json_encode(
+            [
+                'storeId' => $storeId,
+                'offeringId' => $offeringId,
+                'planId' => $planId,
+                'customerSelector' => $customerSelector,
+                'durationMinutes' => $durationMinutes,
+                'onPayBehavior' => $onPayBehavior,
+                'newSubscriberMetadata' => $newSubscriberMetadata,
+                'invoiceMetadata' => $invoiceMetadata,
+                'metadata' => $metadata,
+                'isTrial' => $isTrial,
+                'creditPurchase' => $creditPurchase,
+                'successRedirectLink' => $successRedirectLink,
+                'newSubscriberEmail' => $newSubscriberEmail
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new PlanCheckout(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    // Portal session endpoints
+
+    public function createPortalSession(
+        string $storeId,
+        string $offeringId,
+        string $customerSelector,
+        ?int $durationMinutes = null
+    ): PortalSession {
+        $url = $this->getApiUrl() . 'subscriber-portal';
+        $headers = $this->getRequestHeaders();
+        $method = 'POST';
+
+        $body = json_encode(
+            [
+                'storeId' => $storeId,
+                'offeringId' => $offeringId,
+                'customerSelector' => $customerSelector,
+                'durationMinutes' => $durationMinutes
+            ],
+            JSON_THROW_ON_ERROR
+        );
+
+        $response = $this->getHttpClient()->request($method, $url, $headers, $body);
+
+        if ($response->getStatus() === 200) {
+            return new PortalSession(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+
+    public function getPortalSession(string $portalSessionId): PortalSession
+    {
+        $url = $this->getApiUrl() . 'subscriber-portal/' . urlencode($portalSessionId);
+        $headers = $this->getRequestHeaders();
+        $method = 'GET';
+        $response = $this->getHttpClient()->request($method, $url, $headers);
+
+        if ($response->getStatus() === 200) {
+            return new PortalSession(json_decode($response->getBody(), true, 512, JSON_THROW_ON_ERROR));
+        } else {
+            throw $this->getExceptionByStatusCode($method, $url, $response);
+        }
+    }
+}

src/Client/Webhook.php

@@ -238,7 +238,7 @@ class Webhook extends AbstractClient
         if ($requestBody && $btcpaySigHeader) {
             $expectedHeader = 'sha256=' . hash_hmac('sha256', $requestBody, $secret);
 
-            if ($expectedHeader === $btcpaySigHeader) {
+            if (hash_equals($expectedHeader, $btcpaySigHeader)) {
                 return true;
             }
         }

src/Exception/BTCPayException.php

@@ -6,7 +6,7 @@ namespace BTCPayServer\Exception;
 
 class BTCPayException extends \RuntimeException
 {
-    public function __construct(string $message, int $code, \Throwable $previous = null)
+    public function __construct(string $message, int $code, ?\Throwable $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }

src/Result/AbstractStorePaymentMethodResult.php

@@ -6,7 +6,7 @@ namespace BTCPayServer\Result;
 
 abstract class AbstractStorePaymentMethodResult extends AbstractResult
 {
-    public function __construct(array $data, string $paymentMethod = null)
+    public function __construct(array $data, ?string $paymentMethod = null)
     {
         // Temporary workaround until the api provides paymentMethod.
         if (!isset($data['paymentMethod'])) {

src/Result/Credit.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class Credit extends AbstractResult
+{
+    public function getCurrency(): string
+    {
+        return $this->getData()['currency'];
+    }
+
+    public function getValue(): string
+    {
+        return $this->getData()['value'];
+    }
+}

src/Result/Customer.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class Customer extends AbstractResult
+{
+    public function getStoreId(): string
+    {
+        return $this->getData()['storeId'];
+    }
+
+    public function getId(): string
+    {
+        return $this->getData()['id'];
+    }
+
+    public function getExternalId(): ?string
+    {
+        return $this->getData()['externalId'] ?? null;
+    }
+
+    public function getIdentities(): ?array
+    {
+        return $this->getData()['identities'] ?? null;
+    }
+
+    public function getMetadata(): ?array
+    {
+        return $this->getData()['metadata'] ?? null;
+    }
+}

src/Result/Feature.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class Feature extends AbstractResult
+{
+    public function getId(): string
+    {
+        return $this->getData()['id'];
+    }
+
+    public function getDescription(): string
+    {
+        return $this->getData()['description'];
+    }
+}

src/Result/Offering.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class Offering extends AbstractResult
+{
+    public function getId(): string
+    {
+        return $this->getData()['id'];
+    }
+
+    public function getStoreId(): string
+    {
+        return $this->getData()['storeId'];
+    }
+
+    public function getAppId(): ?string
+    {
+        return $this->getData()['appId'] ?? null;
+    }
+
+    public function getAppName(): ?string
+    {
+        return $this->getData()['appName'] ?? null;
+    }
+
+    public function getSuccessRedirectUrl(): ?string
+    {
+        return $this->getData()['successRedirectUrl'] ?? null;
+    }
+
+    public function getMetadata(): ?array
+    {
+        return $this->getData()['metadata'] ?? null;
+    }
+
+    /**
+     * @return OfferingPlan[]
+     */
+    public function getPlans(): array
+    {
+        $plans = [];
+        if (isset($this->getData()['plans']) && is_array($this->getData()['plans'])) {
+            foreach ($this->getData()['plans'] as $plan) {
+                $plans[] = new OfferingPlan($plan);
+            }
+        }
+        return $plans;
+    }
+
+    /**
+     * @return Feature[]
+     */
+    public function getFeatures(): array
+    {
+        $features = [];
+        if (isset($this->getData()['features']) && is_array($this->getData()['features'])) {
+            foreach ($this->getData()['features'] as $feature) {
+                $features[] = new Feature($feature);
+            }
+        }
+        return $features;
+    }
+}

src/Result/OfferingList.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class OfferingList extends AbstractListResult
+{
+    /**
+     * @return Offering[]
+     */
+    public function all(): array
+    {
+        $result = [];
+        foreach ($this->getData() as $item) {
+            $result[] = new Offering($item);
+        }
+        return $result;
+    }
+}

src/Result/OfferingPlan.php

@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class OfferingPlan extends AbstractResult
+{
+    public function getId(): string
+    {
+        return $this->getData()['id'];
+    }
+
+    public function getName(): string
+    {
+        return $this->getData()['name'];
+    }
+
+    public function getStatus(): string
+    {
+        return $this->getData()['status'];
+    }
+
+    public function getPrice(): string
+    {
+        return $this->getData()['price'];
+    }
+
+    public function getCurrency(): string
+    {
+        return $this->getData()['currency'];
+    }
+
+    public function getRecurringType(): string
+    {
+        return $this->getData()['recurringType'];
+    }
+
+    public function getGracePeriodDays(): int
+    {
+        return $this->getData()['gracePeriodDays'];
+    }
+
+    public function getTrialDays(): int
+    {
+        return $this->getData()['trialDays'];
+    }
+
+    public function getDescription(): string
+    {
+        return $this->getData()['description'];
+    }
+
+    public function getMemberCount(): int
+    {
+        return $this->getData()['memberCount'];
+    }
+
+    public function isOptimisticActivation(): bool
+    {
+        return $this->getData()['optimisticActivation'];
+    }
+
+    public function isRenewable(): bool
+    {
+        return $this->getData()['renewable'];
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getFeatures(): array
+    {
+        return $this->getData()['features'] ?? [];
+    }
+
+    public function getMetadata(): ?array
+    {
+        return $this->getData()['metadata'] ?? null;
+    }
+}

src/Result/PlanCheckout.php

@@ -0,0 +1,113 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class PlanCheckout extends AbstractResult
+{
+    public function getId(): string
+    {
+        return $this->getData()['id'];
+    }
+
+    public function getSubscriber(): ?Subscriber
+    {
+        return isset($this->getData()['subscriber']) ? new Subscriber($this->getData()['subscriber']) : null;
+    }
+
+    public function getPlan(): OfferingPlan
+    {
+        return new OfferingPlan($this->getData()['plan']);
+    }
+
+    public function getBaseUrl(): string
+    {
+        return $this->getData()['baseUrl'];
+    }
+
+    public function getInvoiceId(): ?string
+    {
+        return $this->getData()['invoiceId'] ?? null;
+    }
+
+    public function getSuccessRedirectUrl(): ?string
+    {
+        return $this->getData()['successRedirectUrl'] ?? null;
+    }
+
+    public function getExpiration(): int
+    {
+        return $this->getData()['expiration'];
+    }
+
+    public function getRedirectUrl(): string
+    {
+        return $this->getData()['redirectUrl'];
+    }
+
+    public function getInvoiceMetadata(): ?array
+    {
+        return $this->getData()['invoiceMetadata'] ?? null;
+    }
+
+    public function getMetadata(): ?array
+    {
+        return $this->getData()['metadata'] ?? null;
+    }
+
+    public function isNewSubscriber(): bool
+    {
+        return $this->getData()['newSubscriber'];
+    }
+
+    public function isTrial(): bool
+    {
+        return $this->getData()['isTrial'];
+    }
+
+    public function getCreated(): int
+    {
+        return $this->getData()['created'];
+    }
+
+    public function isPlanStarted(): bool
+    {
+        return $this->getData()['planStarted'];
+    }
+
+    public function getNewSubscriberMetadata(): ?array
+    {
+        return $this->getData()['newSubscriberMetadata'] ?? null;
+    }
+
+    public function getRefundAmount(): ?string
+    {
+        return $this->getData()['refundAmount'] ?? null;
+    }
+
+    public function getCreditedByInvoice(): ?string
+    {
+        return $this->getData()['creditedByInvoice'] ?? null;
+    }
+
+    public function getOnPayBehavior(): ?string
+    {
+        return $this->getData()['onPayBehavior'] ?? null;
+    }
+
+    public function isExpired(): bool
+    {
+        return $this->getData()['isExpired'];
+    }
+
+    public function getUrl(): string
+    {
+        return $this->getData()['url'];
+    }
+
+    public function getCreditPurchase(): ?string
+    {
+        return $this->getData()['creditPurchase'] ?? null;
+    }
+}

src/Result/PortalSession.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class PortalSession extends AbstractResult
+{
+    public function getId(): string
+    {
+        return $this->getData()['id'];
+    }
+
+    public function getBaseUrl(): string
+    {
+        return $this->getData()['baseUrl'];
+    }
+
+    public function getSubscriber(): Subscriber
+    {
+        return new Subscriber($this->getData()['subscriber']);
+    }
+
+    public function getExpiration(): ?int
+    {
+        return $this->getData()['expiration'] ?? null;
+    }
+
+    public function isExpired(): bool
+    {
+        return $this->getData()['isExpired'];
+    }
+
+    public function getUrl(): string
+    {
+        return $this->getData()['url'];
+    }
+}

src/Result/Subscriber.php

@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BTCPayServer\Result;
+
+class Subscriber extends AbstractResult
+{
+    public function getCreated(): int
+    {
+        return $this->getData()['created'];
+    }
+
+    public function getCustomer(): Customer
+    {
+        return new Customer($this->getData()['customer']);
+    }
+
+    public function getOffering(): Offering
+    {
+        return new Offering($this->getData()['offering']);
+    }
+
+    public function getPlan(): OfferingPlan
+    {
+        return new OfferingPlan($this->getData()['plan']);
+    }
+
+    public function getPeriodEnd(): ?int
+    {
+        return $this->getData()['periodEnd'] ?? null;
+    }
+
+    public function getTrialEnd(): ?int
+    {
+        return $this->getData()['trialEnd'] ?? null;
+    }
+
+    public function getGracePeriodEnd(): ?int
+    {
+        return $this->getData()['gracePeriodEnd'] ?? null;
+    }
+
+    public function isActive(): bool
+    {
+        return $this->getData()['isActive'];
+    }
+
+    public function isSuspended(): bool
+    {
+        return $this->getData()['isSuspended'];
+    }
+
+    public function getSuspensionReason(): ?string
+    {
+        return $this->getData()['suspensionReason'] ?? null;
+    }
+
+    public function isAutoRenew(): bool
+    {
+        return $this->getData()['autoRenew'];
+    }
+
+    public function getMetadata(): ?array
+    {
+        return $this->getData()['metadata'] ?? null;
+    }
+
+    public function getProcessingInvoiceId(): ?string
+    {
+        return $this->getData()['processingInvoiceId'] ?? null;
+    }
+
+    public function getNextPlan(): ?OfferingPlan
+    {
+        return isset($this->getData()['nextPlan']) ? new OfferingPlan($this->getData()['nextPlan']) : null;
+    }
+
+    public function getScheduledPlan(): ?OfferingPlan
+    {
+        return isset($this->getData()['scheduledPlan']) ? new OfferingPlan($this->getData()['scheduledPlan']) : null;
+    }
+
+    public function getScheduledPlanActivatesAt(): ?int
+    {
+        return $this->getData()['scheduledPlanActivatesAt'] ?? null;
+    }
+
+    public function getPhase(): string
+    {
+        return $this->getData()['phase'];
+    }
+}