| <?php |
| |
| declare(strict_types=1); |
| |
| namespace Ddeboer\Imap; |
| |
| use Ddeboer\Imap\Exception\InvalidResourceException; |
| use Ddeboer\Imap\Exception\ReopenMailboxException; |
| |
| /** |
| * An imap resource stream. |
| */ |
| final class ImapResource implements ImapResourceInterface |
| { |
| /** |
| * @var resource |
| */ |
| private $resource; |
| private ?MailboxInterface $mailbox = null; |
| private static ?string $lastMailboxUsedCache = null; |
| |
| /** |
| * Constructor. |
| * |
| * @param resource $resource |
| */ |
| public function __construct($resource, MailboxInterface $mailbox = null) |
| { |
| $this->resource = $resource; |
| $this->mailbox = $mailbox; |
| } |
| |
| public function getStream() |
| { |
| if (false === \is_resource($this->resource) || 'imap' !== \get_resource_type($this->resource)) { |
| throw new InvalidResourceException('Supplied resource is not a valid imap resource'); |
| } |
| |
| $this->initMailbox(); |
| |
| return $this->resource; |
| } |
| |
| public function clearLastMailboxUsedCache(): void |
| { |
| self::$lastMailboxUsedCache = null; |
| } |
| |
| /** |
| * If connection is not currently in this mailbox, switch it to this mailbox. |
| */ |
| private function initMailbox(): void |
| { |
| if (null === $this->mailbox || self::isMailboxOpen($this->mailbox, $this->resource)) { |
| return; |
| } |
| |
| \imap_reopen($this->resource, $this->mailbox->getFullEncodedName()); |
| |
| if (self::isMailboxOpen($this->mailbox, $this->resource)) { |
| return; |
| } |
| |
| throw new ReopenMailboxException(\sprintf('Cannot reopen mailbox "%s"', $this->mailbox->getName())); |
| } |
| |
| /** |
| * Check whether the current mailbox is open. |
| * |
| * @param resource $resource |
| */ |
| private static function isMailboxOpen(MailboxInterface $mailbox, $resource): bool |
| { |
| $currentMailboxName = $mailbox->getFullEncodedName(); |
| if ($currentMailboxName === self::$lastMailboxUsedCache) { |
| return true; |
| } |
| |
| self::$lastMailboxUsedCache = null; |
| $check = \imap_check($resource); |
| $return = false !== $check && $check->Mailbox === $currentMailboxName; |
| |
| if (true === $return) { |
| self::$lastMailboxUsedCache = $currentMailboxName; |
| } |
| |
| return $return; |
| } |
| } |