PhabricatorMailSendGridAdapter.php
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	<?php

	/**
	* Mail adapter that uses SendGrid's web API to deliver email.
	*/
	final class PhabricatorMailSendGridAdapter
	extends PhabricatorMailAdapter {

	const ADAPTERTYPE = 'sendgrid';

	public function getSupportedMessageTypes() {
	return array(
	PhabricatorMailEmailMessage::MESSAGETYPE,
	);
	}

	protected function validateOptions(array $options) {
	PhutilTypeSpec::checkMap(
	$options,
	array(
	'api-key' => 'string',
	));
	}

	public function newDefaultOptions() {
	return array(
	'api-key' => null,
	);
	}

	public function sendMessage(PhabricatorMailExternalMessage $message) {
	$key = $this->getOption('api-key');

	$parameters = array();

	$subject = $message->getSubject();
	if ($subject !== null) {
	$parameters['subject'] = $subject;
	}

	$personalizations = array();

	$to_addresses = $message->getToAddresses();
	if ($to_addresses) {
	$personalizations['to'] = array();
	foreach ($to_addresses as $address) {
	$personalizations['to'][] = $this->newPersonalization($address);
	}
	}

	$cc_addresses = $message->getCCAddresses();
	if ($cc_addresses) {
	$personalizations['cc'] = array();
	foreach ($cc_addresses as $address) {
	$personalizations['cc'][] = $this->newPersonalization($address);
	}
	}

	// This is a list of different sets of recipients who should receive copies
	// of the mail. We handle "one message to each recipient" ourselves.
	$parameters['personalizations'] = array(
	$personalizations,
	);

	$from_address = $message->getFromAddress();
	if ($from_address) {
	$parameters['from'] = $this->newPersonalization($from_address);
	}

	$reply_address = $message->getReplyToAddress();
	if ($reply_address) {
	$parameters['reply_to'] = $this->newPersonalization($reply_address);
	}

	$headers = $message->getHeaders();
	if ($headers) {
	$map = array();
	foreach ($headers as $header) {
	$map[$header->getName()] = $header->getValue();
	}
	$parameters['headers'] = $map;
	}

	$content = array();
	$text_body = $message->getTextBody();
	if ($text_body !== null) {
	$content[] = array(
	'type' => 'text/plain',
	'value' => $text_body,
	);
	}

	$html_body = $message->getHTMLBody();
	if ($html_body !== null) {
	$content[] = array(
	'type' => 'text/html',
	'value' => $html_body,
	);
	}
	$parameters['content'] = $content;

	$attachments = $message->getAttachments();
	if ($attachments) {
	$files = array();
	foreach ($attachments as $attachment) {
	$files[] = array(
	'content' => base64_encode($attachment->getData()),
	'type' => $attachment->getMimeType(),
	'filename' => $attachment->getFilename(),
	'disposition' => 'attachment',
	);
	}
	$parameters['attachments'] = $files;
	}

	$sendgrid_uri = 'https://api.sendgrid.com/v3/mail/send';
	$json_parameters = phutil_json_encode($parameters);

	id(new HTTPSFuture($sendgrid_uri))
	->setMethod('POST')
	->addHeader('Authorization', "Bearer {$key}")
	->addHeader('Content-Type', 'application/json')
	->setData($json_parameters)
	->setTimeout(60)
	->resolvex();

	// The SendGrid v3 API does not return a JSON response body. We get a
	// non-2XX HTTP response in the case of an error, which throws above.
	}

	private function newPersonalization(PhutilEmailAddress $address) {
	$result = array(
	'email' => $address->getAddress(),
	);

	$display_name = $address->getDisplayName();
	if ($display_name) {
	$result['name'] = $display_name;
	}

	return $result;
	}

	}

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