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