Using secure url for instant purchase

Author: Jan Polak

app/code/Magento/InstantPurchase/Block/Button.php

@@ -42,6 +42,8 @@ public function getJsLayout(): string
     {
         $buttonText = $this->instantPurchaseConfig->getButtonText();
         $this->jsLayout['components']['instant-purchase']['config']['buttonText'] = $buttonText;
+        $this->jsLayout['components']['instant-purchase']['config']['purchaseUrl'] =
+            $this->getUrl('instantpurchase/button/placeOrder', ['_secure' => true]);
 
         return parent::getJsLayout();
     }

app/code/Magento/InstantPurchase/view/frontend/web/js/view/instant-purchase.js

@@ -30,7 +30,8 @@ define(
             currentShipping: ko.observable(null),
             defaults: {
                 template: 'Magento_InstantPurchase/instant-purchase',
-                buttonText: $.mage.__('Instant Purchase')
+                buttonText: $.mage.__('Instant Purchase'),
+                purchaseUrl: urlBuilder.build('instantpurchase/button/placeOrder')
             },
             options: {
                 message: $.mage.__('Are you sure you want to place order and pay?'),
@@ -124,7 +125,7 @@ define(
                         /** @inheritdoc */
                         confirm: function () {
                             $.ajax({
-                                url: urlBuilder.build('instantpurchase/button/placeOrder'),
+                                url: self.purchaseUrl,
                                 data: form.serialize(),
                                 type: 'post',
                                 dataType: 'json',