tax calculations

src/Pay/Adapter.php

@@ -146,6 +146,17 @@ abstract public function getPaymentMethod(string $customerId, string $paymentMet
      */
     abstract public function createFuturePayment(string $customerId, array $paymentMethodTypes = []): array;
 
+    /**
+     * Calculate tax based on address
+     *
+     * @param string $invoiceId
+     * @param float $amount
+     * @param string $currency
+     * @param array $address
+     * @return array
+     */
+    abstract public function taxCalculations(string $invoiceId, float $amount, string $currency, array $address): array;
+
     /**
      * Call
      * Make a request

src/Pay/Adapter/Stripe.php

@@ -242,6 +242,31 @@ public function createFuturePayment(string $customerId, array $paymentMethodType
         return $result;
     }
 
+    public function taxCalculations(string $invoiceId, float $amount, string $currency, array $address): array
+    {
+        $path = '/tax/calculations';
+
+        $lineItems = [
+            0 => [
+                'amount' => $amount,
+                'reference' => $invoiceId,
+            ]
+        ];
+        $customerDetails = [
+            'address' => $address,
+            'address_source' => 'billing',
+        ];
+        $requestBody = [
+            'currency' => $currency,
+            'customer_details' => $customerDetails,
+            'line_items' => $lineItems
+        ];
+
+        $result = $this->execute(self::METHOD_POST, $path, $requestBody);
+
+        return $result;
+    }
+
     private function execute(string $method, string $path, array $requestBody = [], array $headers = []): array
     {
         $headers = array_merge(['content-type' => 'application/x-www-form-urlencoded', 'Authorization' => 'Bearer '.$this->secretKey], $headers);

src/Pay/Pay.php

@@ -239,6 +239,11 @@ public function deleteCustomer(string $customerId): bool
         return $this->adapter->deleteCustomer($customerId);
     }
 
+    public function taxCalculations(string $invoiceId, float $amount, string $currency, array $address): array
+    {
+        return $this->adapter->taxCalculations($invoiceId, $amount, $currency, $address);
+    }
+
     /**
      * Create Setup for accepting future payments
      *

tests/Pay/Adapter/StripeTest.php

@@ -191,6 +191,18 @@ public function testDeletePaymentMethod(array $data)
         $this->stripe->getPaymentMethod($customerId, $data['paymentMethodId']);
     }
 
+    public function testTaxCalculations()
+    {
+        // $res = $this->stripe->taxCalculations('test1', 2000, 'USD', [
+        //     'line1' => '354 Oyster Point Blvd',
+        //     'line2' => '',
+        //     'postal_code' => '94080',
+        //     'state' => 'CA',
+        //     'country' => 'US',
+        // ], );
+        // var_dump($res);
+    }
+
     /** @depends testUpdateCustomer */
     public function testDeleteCustomer(array $data)
     {