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phab/src/applications/phortune/provider/PhortuneWePayPaymentProvider.php
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PhortuneWePayPaymentProvider.php
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<?php
final class PhortuneWePayPaymentProvider extends PhortunePaymentProvider {
const WEPAY_CLIENT_ID = 'wepay.client-id';
const WEPAY_CLIENT_SECRET = 'wepay.client-secret';
const WEPAY_ACCESS_TOKEN = 'wepay.access-token';
const WEPAY_ACCOUNT_ID = 'wepay.account-id';
public function isAcceptingLivePayments() {
return preg_match('/^PRODUCTION_/', $this->getWePayAccessToken());
}
public function getName() {
return pht('WePay');
}
public function getConfigureName() {
return pht('Add WePay Payments Account');
}
public function getConfigureDescription() {
return pht(
'Allows you to accept credit or debit card payments with a '.
'wepay.com account.');
}
public function getConfigureProvidesDescription() {
return pht('This merchant accepts credit and debit cards via WePay.');
}
public function getConfigureInstructions() {
return pht(
"To configure WePay, register or log in to an existing account on ".
"[[https://wepay.com | wepay.com]] (for live payments) or ".
"[[https://stage.wepay.com | stage.wepay.com]] (for testing). ".
"Once logged in:\n\n".
" - Create an API application if you don't already have one.\n".
" - Click the API application name to go to the detail page.\n".
" - Copy **Client ID**, **Client Secret**, **Access Token** and ".
" **AccountID** from that page to the fields above.\n\n".
"You can either use `stage.wepay.com` to retrieve test credentials, ".
"or `wepay.com` to retrieve live credentials for accepting live ".
"payments.");
}
public function canRunConfigurationTest() {
return true;
}
public function runConfigurationTest() {
$this->loadWePayAPILibraries();
WePay::useStaging(
$this->getWePayClientID(),
$this->getWePayClientSecret());
$wepay = new WePay($this->getWePayAccessToken());
$params = array(
'client_id' => $this->getWePayClientID(),
'client_secret' => $this->getWePayClientSecret(),
);
$wepay->request('app', $params);
}
public function getAllConfigurableProperties() {
return array(
self::WEPAY_CLIENT_ID,
self::WEPAY_CLIENT_SECRET,
self::WEPAY_ACCESS_TOKEN,
self::WEPAY_ACCOUNT_ID,
);
}
public function getAllConfigurableSecretProperties() {
return array(
self::WEPAY_CLIENT_SECRET,
);
}
public function processEditForm(
AphrontRequest $request,
array $values) {
$errors = array();
$issues = array();
if (!strlen($values[self::WEPAY_CLIENT_ID])) {
$errors[] = pht('WePay Client ID is required.');
$issues[self::WEPAY_CLIENT_ID] = pht('Required');
}
if (!strlen($values[self::WEPAY_CLIENT_SECRET])) {
$errors[] = pht('WePay Client Secret is required.');
$issues[self::WEPAY_CLIENT_SECRET] = pht('Required');
}
if (!strlen($values[self::WEPAY_ACCESS_TOKEN])) {
$errors[] = pht('WePay Access Token is required.');
$issues[self::WEPAY_ACCESS_TOKEN] = pht('Required');
}
if (!strlen($values[self::WEPAY_ACCOUNT_ID])) {
$errors[] = pht('WePay Account ID is required.');
$issues[self::WEPAY_ACCOUNT_ID] = pht('Required');
}
return array($errors, $issues, $values);
}
public function extendEditForm(
AphrontRequest $request,
AphrontFormView $form,
array $values,
array $issues) {
$form
->appendChild(
id(new AphrontFormTextControl())
->setName(self::WEPAY_CLIENT_ID)
->setValue($values[self::WEPAY_CLIENT_ID])
->setError(idx($issues, self::WEPAY_CLIENT_ID, true))
->setLabel(pht('WePay Client ID')))
->appendChild(
id(new AphrontFormTextControl())
->setName(self::WEPAY_CLIENT_SECRET)
->setValue($values[self::WEPAY_CLIENT_SECRET])
->setError(idx($issues, self::WEPAY_CLIENT_SECRET, true))
->setLabel(pht('WePay Client Secret')))
->appendChild(
id(new AphrontFormTextControl())
->setName(self::WEPAY_ACCESS_TOKEN)
->setValue($values[self::WEPAY_ACCESS_TOKEN])
->setError(idx($issues, self::WEPAY_ACCESS_TOKEN, true))
->setLabel(pht('WePay Access Token')))
->appendChild(
id(new AphrontFormTextControl())
->setName(self::WEPAY_ACCOUNT_ID)
->setValue($values[self::WEPAY_ACCOUNT_ID])
->setError(idx($issues, self::WEPAY_ACCOUNT_ID, true))
->setLabel(pht('WePay Account ID')));
}
public function getPaymentMethodDescription() {
return pht('Credit or Debit Card');
}
public function getPaymentMethodIcon() {
return 'WePay';
}
public function getPaymentMethodProviderDescription() {
return 'WePay';
}
protected function executeCharge(
PhortunePaymentMethod $payment_method,
PhortuneCharge $charge) {
throw new Exception('!');
}
private function getWePayClientID() {
return $this
->getProviderConfig()
->getMetadataValue(self::WEPAY_CLIENT_ID);
}
private function getWePayClientSecret() {
return $this
->getProviderConfig()
->getMetadataValue(self::WEPAY_CLIENT_SECRET);
}
private function getWePayAccessToken() {
return $this
->getProviderConfig()
->getMetadataValue(self::WEPAY_ACCESS_TOKEN);
}
private function getWePayAccountID() {
return $this
->getProviderConfig()
->getMetadataValue(self::WEPAY_ACCOUNT_ID);
}
protected function executeRefund(
PhortuneCharge $charge,
PhortuneCharge $refund) {
$wepay = $this->loadWePayAPILibraries();
$checkout_id = $this->getWePayCheckoutID($charge);
$params = array(
'checkout_id' => $checkout_id,
'refund_reason' => pht('Refund'),
'amount' => $refund->getAmountAsCurrency()->negate()->formatBareValue(),
);
$wepay->request('checkout/refund', $params);
}
public function updateCharge(PhortuneCharge $charge) {
$wepay = $this->loadWePayAPILibraries();
$params = array(
'checkout_id' => $this->getWePayCheckoutID($charge),
);
$wepay_checkout = $wepay->request('checkout', $params);
// TODO: Deal with disputes / chargebacks / surprising refunds.
}
/* -( One-Time Payments )-------------------------------------------------- */
public function canProcessOneTimePayments() {
return true;
}
/* -( Controllers )-------------------------------------------------------- */
public function canRespondToControllerAction($action) {
switch ($action) {
case 'checkout':
case 'charge':
case 'cancel':
return true;
}
return parent::canRespondToControllerAction();
}
/**
* @phutil-external-symbol class WePay
*/
public function processControllerRequest(
PhortuneProviderActionController $controller,
AphrontRequest $request) {
$wepay = $this->loadWePayAPILibraries();
$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(
'charge',
array(
'cartID' => $cart->getID(),
));
$cancel_uri = $this->getControllerURI(
'cancel',
array(
'cartID' => $cart->getID(),
));
$price = $cart->getTotalPriceAsCurrency();
$params = array(
'account_id' => $this->getWePayAccountID(),
'short_description' => $cart->getName(),
'type' => 'SERVICE',
'amount' => $price->formatBareValue(),
'long_description' => $cart->getName(),
'reference_id' => $cart->getPHID(),
'app_fee' => 0,
'fee_payer' => 'Payee',
'redirect_uri' => $return_uri,
'fallback_uri' => $cancel_uri,
// NOTE: If we don't `auto_capture`, we might get a result back in
// either an "authorized" or a "reserved" state. We can't capture
// an "authorized" result, so just autocapture.
'auto_capture' => true,
'require_shipping' => 0,
'shipping_fee' => 0,
'charge_tax' => 0,
'mode' => 'regular',
// TODO: We could accept bank accounts but the hold/capture rules
// are not quite clear. Just accept credit cards for now.
'funding_sources' => 'cc',
);
$charge = $cart->willApplyCharge($viewer, $this);
$result = $wepay->request('checkout/create', $params);
$cart->setMetadataValue('provider.checkoutURI', $result->checkout_uri);
$cart->save();
$charge->setMetadataValue('wepay.checkoutID', $result->checkout_id);
$charge->save();
$uri = new PhutilURI($result->checkout_uri);
return id(new AphrontRedirectResponse())
->setIsExternal(true)
->setURI($uri);
case 'charge':
if ($cart->getStatus() !== PhortuneCart::STATUS_PURCHASING) {
return id(new AphrontRedirectResponse())
->setURI($cart->getCheckoutURI());
}
$checkout_id = $request->getInt('checkout_id');
$params = array(
'checkout_id' => $checkout_id,
);
$checkout = $wepay->request('checkout', $params);
if ($checkout->reference_id != $cart->getPHID()) {
throw new Exception(
pht('Checkout reference ID does not match cart PHID!'));
}
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
switch ($checkout->state) {
case 'authorized':
case 'reserved':
case 'captured':
// TODO: Are these all really "done" states, and not "hold"
// states? Cards and bank accounts both come back as "authorized"
// on the staging environment. Figure out what happens in
// production?
$cart->didApplyCharge($charge);
$response = id(new AphrontRedirectResponse())->setURI(
$cart->getCheckoutURI());
break;
default:
// It's not clear if we can ever get here on the web workflow,
// WePay doesn't seem to return back to us after a failure (the
// workflow dead-ends instead).
$cart->didFailCharge($charge);
$response = $controller
->newDialog()
->setTitle(pht('Charge Failed'))
->appendParagraph(
pht(
'Unable to make payment (checkout state is "%s").',
$checkout->state))
->addCancelButton($cart->getCheckoutURI(), pht('Continue'));
break;
}
unset($unguarded);
return $response;
case 'cancel':
// TODO: I don't know how it's possible to cancel out of a WePay
// charge workflow.
throw new Exception(
pht('How did you get here? WePay has no cancel flow in its UI...?'));
break;
}
throw new Exception(
pht('Unsupported action "%s".', $controller->getAction()));
}
private function loadWePayAPILibraries() {
$root = dirname(phutil_get_library_root('phabricator'));
require_once $root.'/externals/wepay/wepay.php';
WePay::useStaging(
$this->getWePayClientID(),
$this->getWePayClientSecret());
return new WePay($this->getWePayAccessToken());
}
private function getWePayCheckoutID(PhortuneCharge $charge) {
$checkout_id = $charge->getMetadataValue('wepay.checkoutID');
if ($checkout_id === null) {
throw new Exception(pht('No WePay Checkout ID present on charge!'));
}
return $checkout_id;
}
}
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