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<?php |
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namespace Sichikawa\LaravelSendgridDriver\Transport; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\ClientInterface; |
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use GuzzleHttp\Exception\GuzzleException; |
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use Illuminate\Mail\Transport\Transport; |
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use Illuminate\Support\Arr; |
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use Psr\Http\Message\ResponseInterface; |
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use Sichikawa\LaravelSendgridDriver\SendGrid; |
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use Swift_Attachment; |
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use Swift_Image; |
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use Swift_Mime_SimpleMessage; |
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use Swift_MimePart; |
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class SendgridTransport extends Transport |
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{ |
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use SendGrid { |
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sgDecode as decode; |
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} |
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const SMTP_API_NAME = 'sendgrid/x-smtpapi'; |
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const BASE_URL = 'https://api.sendgrid.com/v3/mail/send'; |
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/** |
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* @var Client |
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*/ |
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private $client; |
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private $attachments; |
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private $numberOfRecipients; |
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private $apiKey; |
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private $endpoint; |
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public function __construct(ClientInterface $client, $api_key, $endpoint = null) |
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{ |
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$this->client = $client; |
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$this->apiKey = $api_key; |
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$this->endpoint = isset($endpoint) ? $endpoint : self::BASE_URL; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function send(Swift_Mime_SimpleMessage $message, &$failedRecipients = null) |
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{ |
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$this->beforeSendPerformed($message); |
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$data = [ |
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'personalizations' => $this->getPersonalizations($message), |
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'from' => $this->getFrom($message), |
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'subject' => $message->getSubject(), |
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]; |
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if ($contents = $this->getContents($message)) { |
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$data['content'] = $contents; |
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} |
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if ($reply_to = $this->getReplyTo($message)) { |
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$data['reply_to'] = $reply_to; |
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} |
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$attachments = $this->getAttachments($message); |
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if (count($attachments) > 0) { |
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$data['attachments'] = $attachments; |
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} |
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$data = $this->setParameters($message, $data); |
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$payload = [ |
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'headers' => [ |
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'Authorization' => 'Bearer ' . $this->apiKey, |
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'Content-Type' => 'application/json', |
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], |
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'json' => $data, |
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]; |
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$response = $this->post($payload); |
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$message->getHeaders()->addTextHeader('X-Sendgrid-Message-Id', $response->getHeaderLine('X-Message-Id')); |
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$this->sendPerformed($message); |
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return $this->numberOfRecipients ?: $this->numberOfRecipients($message); |
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} |
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/** |
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* @param Swift_Mime_SimpleMessage $message |
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* @return array |
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*/ |
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private function getPersonalizations(Swift_Mime_SimpleMessage $message) |
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{ |
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$setter = function (array $addresses) { |
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$recipients = []; |
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foreach ($addresses as $email => $name) { |
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$address = []; |
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$address['email'] = $email; |
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if ($name) { |
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$address['name'] = $name; |
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} |
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$recipients[] = $address; |
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} |
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return $recipients; |
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}; |
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$personalization['to'] = $setter($message->getTo()); |
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if ($cc = $message->getCc()) { |
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$personalization['cc'] = $setter($cc); |
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} |
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if ($bcc = $message->getBcc()) { |
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$personalization['bcc'] = $setter($bcc); |
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} |
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return [$personalization]; |
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} |
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/** |
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* Get From Addresses. |
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* |
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* @param Swift_Mime_SimpleMessage $message |
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* @return array |
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*/ |
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private function getFrom(Swift_Mime_SimpleMessage $message) |
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{ |
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if ($message->getFrom()) { |
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foreach ($message->getFrom() as $email => $name) { |
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return ['email' => $email, 'name' => $name]; |
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} |
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} |
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return []; |
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} |
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/** |
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* Get ReplyTo Addresses. |
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* |
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* @param Swift_Mime_SimpleMessage $message |
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* @return array |
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*/ |
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private function getReplyTo(Swift_Mime_SimpleMessage $message) |
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{ |
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if ($message->getReplyTo()) { |
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foreach ($message->getReplyTo() as $email => $name) { |
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return ['email' => $email, 'name' => $name]; |
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} |
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} |
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return null; |
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} |
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/** |
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* Get contents. |
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* |
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* @param Swift_Mime_SimpleMessage $message |
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* @return array |
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*/ |
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private function getContents(Swift_Mime_SimpleMessage $message) |
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{ |
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$contentType = $message->getContentType(); |
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switch ($contentType) { |
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case 'text/plain': |
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return [ |
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[ |
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'type' => 'text/plain', |
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'value' => $message->getBody(), |
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], |
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]; |
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case 'text/html': |
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return [ |
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[ |
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'type' => 'text/html', |
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'value' => $message->getBody(), |
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], |
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]; |
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} |
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// Following RFC 1341, text/html after text/plain in multipart |
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$content = []; |
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foreach ($message->getChildren() as $child) { |
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if ($child instanceof Swift_MimePart && $child->getContentType() === 'text/plain') { |
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$content[] = [ |
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'type' => 'text/plain', |
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'value' => $child->getBody(), |
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]; |
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} |
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} |
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if (is_null($message->getBody())) { |
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return null; |
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} |
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$content[] = [ |
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'type' => 'text/html', |
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'value' => $message->getBody(), |
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]; |
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return $content; |
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} |
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/** |
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* @param Swift_Mime_SimpleMessage $message |
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* @return array |
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*/ |
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private function getAttachments(Swift_Mime_SimpleMessage $message) |
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{ |
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$attachments = []; |
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foreach ($message->getChildren() as $attachment) { |
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if ((!$attachment instanceof Swift_Attachment && !$attachment instanceof Swift_Image) |
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|| $attachment->getFilename() === self::SMTP_API_NAME |
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) { |
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continue; |
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} |
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$attachments[] = [ |
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'content' => base64_encode($attachment->getBody()), |
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'filename' => $attachment->getFilename(), |
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'type' => $attachment->getContentType(), |
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'disposition' => $attachment->getDisposition(), |
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'content_id' => $attachment->getId(), |
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]; |
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} |
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return $this->attachments = $attachments; |
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} |
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/** |
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* Set Request Body Parameters |
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* |
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* @param Swift_Mime_SimpleMessage $message |
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* @param array $data |
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* @return array |
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* @throws \Exception |
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*/ |
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protected function setParameters(Swift_Mime_SimpleMessage $message, $data) |
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{ |
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$this->numberOfRecipients = 0; |
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$smtp_api = []; |
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foreach ($message->getChildren() as $attachment) { |
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if (!$attachment instanceof Swift_Image |
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|| !in_array(self::SMTP_API_NAME, [$attachment->getFilename(), $attachment->getContentType()]) |
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) { |
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continue; |
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} |
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$smtp_api = self::decode($attachment->getBody()); |
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} |
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if (!is_array($smtp_api)) { |
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return $data; |
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} |
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foreach ($smtp_api as $key => $val) { |
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switch ($key) { |
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case 'api_key': |
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$this->apiKey = $val; |
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continue 2; |
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case 'personalizations': |
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$this->setPersonalizations($data, $val); |
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continue 2; |
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case 'attachments': |
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$val = array_merge($this->attachments, $val); |
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break; |
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case 'unique_args': |
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throw new \Exception('Sendgrid v3 now uses custom_args instead of unique_args'); |
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case 'custom_args': |
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foreach ($val as $name => $value) { |
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if (!is_string($value)) { |
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throw new \Exception('Sendgrid v3 custom arguments have to be a string.'); |
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} |
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} |
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break; |
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} |
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Arr::set($data, $key, $val); |
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} |
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return $data; |
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} |
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private function setPersonalizations(&$data, $personalizations) |
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{ |
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foreach ($personalizations as $index => $params) { |
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foreach ($params as $key => $val) { |
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if (in_array($key, ['to', 'cc', 'bcc'])) { |
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Arr::set($data, 'personalizations.' . $index . '.' . $key, [$val]); |
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++$this->numberOfRecipients; |
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} else { |
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Arr::set($data, 'personalizations.' . $index . '.' . $key, $val); |
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} |
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} |
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} |
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} |
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/** |
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* @param $payload |
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* @return ResponseInterface |
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* @throws GuzzleException |
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*/ |
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private function post($payload) |
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{ |
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return $this->client->request('POST', $this->endpoint, $payload); |
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} |
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} |
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly.
Either this assignment is in error or an instanceof check should be added for that assignment.