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Add newsletter management functionality

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This commit is contained in:
Alex Cabal 2022-03-20 17:40:19 -05:00
parent 90ee0a93c9
commit b0197d189a
57 changed files with 1017 additions and 143 deletions
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87
www/webhooks/postmark.php Normal file
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<?
require_once('Core.php');
use function Safe\curl_exec;
use function Safe\curl_init;
use function Safe\curl_setopt;
use function Safe\file_get_contents;
use function Safe\json_decode;
use function Safe\substr;
// Get a semi-random ID to identify this request within the log.
$requestId = substr(sha1(time() . rand()), 0, 8);
try{
Logger::WritePostmarkWebhookLogEntry($requestId, 'Received Postmark webhook.');
if($_SERVER['REQUEST_METHOD'] != 'POST'){
throw new Exceptions\WebhookException('Expected HTTP POST.');
}
$apiKey = trim(file_get_contents(SITE_ROOT . '/config/secrets/webhooks@postmarkapp.com')) ?: '';
// Ensure this webhook actually came from Postmark
if($apiKey != ($_SERVER['HTTP_X_SE_KEY'] ?? '')){
throw new Exceptions\InvalidCredentialsException();
}
$post = json_decode(file_get_contents('php://input') ?: '');
if(!$post || !property_exists($post, 'RecordType')){
throw new Exceptions\WebhookException('Couldn\'t understand HTTP request.', $post);
}
if($post->RecordType == 'SpamComplaint'){
// Received when a user marks an email as spam
Logger::WritePostmarkWebhookLogEntry($requestId, 'Event type: spam complaint.');
Db::Query('delete from NewsletterSubscribers where Email = ?', [$post->Email]);
}
elseif($post->RecordType == 'SubscriptionChange' && $post->SuppressSending){
// Received when a user clicks Postmark's "Unsubscribe" link in a newsletter email
Logger::WritePostmarkWebhookLogEntry($requestId, 'Event type: unsubscribe.');
$email = $post->Recipient;
// Remove the email from our newsletter list
Db::Query('delete from NewsletterSubscribers where Email = ?', [$email]);
// Remove the suppression from Postmark, since we deleted it from our own list we will never email them again anyway
$handle = curl_init();
curl_setopt($handle, CURLOPT_URL, 'https://api.postmarkapp.com/message-streams/' . $post->MessageStream . '/suppressions/delete');
curl_setopt($handle, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($handle, CURLOPT_HTTPHEADER, ['Content-Type: application/json', 'Accept: application/json', 'X-Postmark-Server-Token: ' . EMAIL_SMTP_USERNAME]);
curl_setopt($handle, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($handle, CURLOPT_POSTFIELDS, '{"Suppressions": [{"EmailAddress": "' . $email . '"}]}');
curl_exec($handle);
curl_close($handle);
}
elseif($post->RecordType == 'SubscriptionChange' && $post->SuppressionReason === null){
Logger::WritePostmarkWebhookLogEntry($requestId, 'Event type: suppression deletion.');
}
else{
Logger::WritePostmarkWebhookLogEntry($requestId, 'Unrecognized event: ' . $post->RecordType);
}
Logger::WritePostmarkWebhookLogEntry($requestId, 'Event processed.');
// "Success, no content"
http_response_code(204);
}
catch(Exceptions\InvalidCredentialsException $ex){
// "Forbidden"
Logger::WritePostmarkWebhookLogEntry($requestId, 'Invalid key: ' . ($_SERVER['HTTP_X_SE_KEY'] ?? ''));
http_response_code(403);
}
catch(Exceptions\WebhookException $ex){
// Uh oh, something went wrong!
// Log detailed error and debugging information locally.
Logger::WritePostmarkWebhookLogEntry($requestId, 'Webhook failed! Error: ' . $ex->getMessage());
Logger::WritePostmarkWebhookLogEntry($requestId, 'Webhook POST data: ' . $ex->PostData);
// Print less details to the client.
print($ex->getMessage());
// "Client error"
http_response_code(400);
}