Disable Phortune Paypal payment provider

Summary:
Ref T2787. For test charges, Paypal is putting the charge in a "payment review" state. Dealing with this state requires way more infrastructure than other providers: we're supposed to pause delivery, then poll Paypal every 6 hours to see if the review has resolved.

Since I can't seem to generate normal test charges, I can't test Paypal for now. Disable it until we have more infrastructure.

(This diff gets us further along, up to the point where I hit this issue.)

Test Plan: Read documentation, rolled eyes.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T2787

Differential Revision: https://secure.phabricator.com/D10644

src/applications/phortune/controller/PhortuneProviderController.php

@@ -71,4 +71,18 @@ final class PhortuneProviderController extends PhortuneController {
       ->executeOne();
   }
 
+  public function loadActiveCharge(PhortuneCart $cart) {
+    $request = $this->getRequest();
+    $viewer = $request->getUser();
+
+    return id(new PhortuneChargeQuery())
+      ->setViewer($viewer)
+      ->withCartPHIDs(array($cart->getPHID()))
+      ->withStatuses(
+        array(
+          PhortuneCharge::STATUS_CHARGING,
+        ))
+      ->executeOne();
+  }
+
 }

src/applications/phortune/provider/PhortunePaypalPaymentProvider.php

@@ -3,6 +3,9 @@
 final class PhortunePaypalPaymentProvider extends PhortunePaymentProvider {
 
   public function isEnabled() {
+    // TODO: See note in processControllerRequest().
+    return false;
+
     return $this->getPaypalAPIUsername() &&
            $this->getPaypalAPIPassword() &&
            $this->getPaypalAPISignature();
@@ -74,11 +77,28 @@ final class PhortunePaypalPaymentProvider extends PhortunePaymentProvider {
     PhortuneProviderController $controller,
     AphrontRequest $request) {
 
+    $viewer = $request->getUser();
+
     $cart = $controller->loadCart($request->getInt('cartID'));
     if (!$cart) {
       return new Aphront404Response();
     }
 
+    $charge = $controller->loadActiveCharge($cart);
+    switch ($controller->getAction()) {
+      case 'checkout':
+        if ($charge) {
+          throw new Exception(pht('Cart is already charging!'));
+        }
+        break;
+      case 'charge':
+      case 'cancel':
+        if (!$charge) {
+          throw new Exception(pht('Cart is not charging yet!'));
+        }
+        break;
+    }
+
     switch ($controller->getAction()) {
       case 'checkout':
         $return_uri = $this->getControllerURI(
@@ -95,17 +115,25 @@ final class PhortunePaypalPaymentProvider extends PhortunePaymentProvider {
 
         $price = $cart->getTotalPriceAsCurrency();
 
-        $result = $this
-          ->newPaypalAPICall()
-          ->setRawPayPalQuery(
-            'SetExpressCheckout',
-            array(
+        $charge = $cart->willApplyCharge($viewer, $this);
+
+        $params = array(
           'PAYMENTREQUEST_0_AMT'            => $price->formatBareValue(),
           'PAYMENTREQUEST_0_CURRENCYCODE'   => $price->getCurrency(),
+          'PAYMENTREQUEST_0_PAYMENTACTION'  => 'Sale',
+          'PAYMENTREQUEST_0_CUSTOM'         => $charge->getPHID(),
+
           'RETURNURL'                       => $return_uri,
           'CANCELURL'                       => $cancel_uri,
-              'PAYMENTREQUEST_0_PAYMENTACTION'  => 'Sale',
-              ))
+
+          // TODO: This should be cart-dependent if we eventually support
+          // physical goods.
+          'NOSHIPPING'                      => '1',
+        );
+
+        $result = $this
+          ->newPaypalAPICall()
+          ->setRawPayPalQuery('SetExpressCheckout', $params)
           ->resolve();
 
         $uri = new PhutilURI('https://www.sandbox.paypal.com/cgi-bin/webscr');
@@ -115,18 +143,74 @@ final class PhortunePaypalPaymentProvider extends PhortunePaymentProvider {
             'token' => $result['TOKEN'],
           ));
 
+        $cart->setMetadataValue('provider.checkoutURI', $uri);
+        $cart->save();
+
+        $charge->setMetadataValue('paypal.token', $result['TOKEN']);
+        $charge->save();
+
         return id(new AphrontRedirectResponse())
           ->setIsExternal(true)
           ->setURI($uri);
       case 'charge':
-        var_dump($_REQUEST);
+        $token = $request->getStr('token');
+
+        $params = array(
+          'TOKEN' => $token,
+        );
+
+        $result = $this
+          ->newPaypalAPICall()
+          ->setRawPayPalQuery('GetExpressCheckoutDetails', $params)
+          ->resolve();
+
+        var_dump($result);
+
+        if ($result['CUSTOM'] !== $charge->getPHID()) {
+          throw new Exception(
+            pht('Paypal checkout does not match Phortune charge!'));
+        }
+
+        if ($result['CHECKOUTSTATUS'] !== 'PaymentActionNotInitiated') {
+          throw new Exception(
+            pht(
+              'Expected status "%s", got "%s".',
+              'PaymentActionNotInitiated',
+              $result['CHECKOUTSTATUS']));
+        }
+
+        $price = $cart->getTotalPriceAsCurrency();
+
+        $params = array(
+          'TOKEN' => $token,
+          'PAYERID' => $result['PAYERID'],
+
+          'PAYMENTREQUEST_0_AMT'            => $price->formatBareValue(),
+          'PAYMENTREQUEST_0_CURRENCYCODE'   => $price->getCurrency(),
+          'PAYMENTREQUEST_0_PAYMENTACTION'  => 'Sale',
+        );
+
+        $result = $this
+          ->newPaypalAPICall()
+          ->setRawPayPalQuery('DoExpressCheckoutPayment', $params)
+          ->resolve();
+
+        // TODO: Paypal can send requests back in "PaymentReview" status,
+        // and does this for test transactions. We're supposed to hold
+        // the transaction and poll the API every 6 hours. This is unreasonably
+        // difficult for now and we can't reasonably just fail these charges.
+
+        var_dump($result);
+
+        die();
         break;
       case 'cancel':
         var_dump($_REQUEST);
         break;
     }
 
-    throw new Exception("The rest of this isn't implemented yet.");
+    throw new Exception(
+      pht('Unsupported action "%s".', $controller->getAction()));
   }
 
   private function newPaypalAPICall() {

src/applications/phortune/provider/PhortuneWePayPaymentProvider.php

@@ -100,15 +100,7 @@ final class PhortuneWePayPaymentProvider extends PhortunePaymentProvider {
 
     $wepay = new WePay($this->getWePayAccessToken());
 
-    $charge = id(new PhortuneChargeQuery())
-      ->setViewer($viewer)
-      ->withCartPHIDs(array($cart->getPHID()))
-      ->withStatuses(
-        array(
-          PhortuneCharge::STATUS_CHARGING,
-        ))
-      ->executeOne();
-
+    $charge = $controller->loadActiveCharge($cart);
     switch ($controller->getAction()) {
       case 'checkout':
         if ($charge) {