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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Mailgun mail provider. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-02-14 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Mail\Provider; |
| 21 | |
| 22 | use phpMyFAQ\Configuration; |
| 23 | use phpMyFAQ\Core\Exception; |
| 24 | use phpMyFAQ\Mail\MailProviderInterface; |
| 25 | use Symfony\Component\HttpClient\HttpClient; |
| 26 | use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface; |
| 27 | use Symfony\Contracts\HttpClient\HttpClientInterface; |
| 28 | |
| 29 | final readonly class MailgunProvider implements MailProviderInterface |
| 30 | { |
| 31 | private HttpClientInterface $httpClient; |
| 32 | |
| 33 | public function __construct( |
| 34 | private Configuration $configuration, |
| 35 | ?HttpClientInterface $httpClient = null, |
| 36 | ) { |
| 37 | $this->httpClient = $httpClient ?? HttpClient::create(); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * @param array<string, int|string|null> $headers |
| 42 | * @throws Exception |
| 43 | * @throws TransportExceptionInterface |
| 44 | */ |
| 45 | public function send(string $recipients, array $headers, string $body): int |
| 46 | { |
| 47 | $apiKey = (string) ($this->configuration->get('mail.mailgunApiKey') ?? ''); |
| 48 | if ($apiKey === '') { |
| 49 | throw new Exception('Mailgun API key is not configured.'); |
| 50 | } |
| 51 | |
| 52 | $domain = (string) ($this->configuration->get('mail.mailgunDomain') ?? ''); |
| 53 | if ($domain === '') { |
| 54 | throw new Exception('Mailgun domain is not configured.'); |
| 55 | } |
| 56 | |
| 57 | $fromAddress = $this->extractEmailAddress((string) ($headers['From'] ?? '')); |
| 58 | if ($fromAddress === '') { |
| 59 | throw new Exception('Missing valid From header for Mailgun provider.'); |
| 60 | } |
| 61 | |
| 62 | $toAddresses = $this->parseRecipients($recipients); |
| 63 | if ($toAddresses === []) { |
| 64 | throw new Exception('No valid recipients for Mailgun provider.'); |
| 65 | } |
| 66 | |
| 67 | $region = strtolower((string) ($this->configuration->get('mail.mailgunRegion') ?? 'us')); |
| 68 | $baseUrl = $region === 'eu' ? 'https://api.eu.mailgun.net' : 'https://api.mailgun.net'; |
| 69 | |
| 70 | $response = $this->httpClient->request('POST', $baseUrl . '/v3/' . $domain . '/messages', [ |
| 71 | 'auth_basic' => ['api', $apiKey], |
| 72 | 'body' => [ |
| 73 | 'from' => $fromAddress, |
| 74 | 'to' => implode(',', $toAddresses), |
| 75 | 'subject' => $headers['Subject'] ?? '', |
| 76 | 'text' => $body, |
| 77 | 'html' => $body, |
| 78 | ], |
| 79 | ]); |
| 80 | |
| 81 | $statusCode = $response->getStatusCode(); |
| 82 | if ($statusCode < 200 || $statusCode >= 300) { |
| 83 | throw new Exception(sprintf( |
| 84 | 'Mailgun request failed with status %d: %s', |
| 85 | $statusCode, |
| 86 | $response->getContent(false), |
| 87 | )); |
| 88 | } |
| 89 | |
| 90 | return count($toAddresses); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @return array<int, string> |
| 95 | */ |
| 96 | private function parseRecipients(string $recipients): array |
| 97 | { |
| 98 | $addresses = []; |
| 99 | foreach (explode(',', $recipients) as $recipient) { |
| 100 | $address = $this->extractEmailAddress($recipient); |
| 101 | if ($address !== '') { |
| 102 | $addresses[] = $address; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | return array_values(array_unique($addresses)); |
| 107 | } |
| 108 | |
| 109 | private function extractEmailAddress(string $rawAddress): string |
| 110 | { |
| 111 | $matches = []; |
| 112 | if (preg_match('/<([^>]+)>/', $rawAddress, $matches) === 1) { |
| 113 | return trim($matches[1]); |
| 114 | } |
| 115 | |
| 116 | return trim($rawAddress); |
| 117 | } |
| 118 | } |