*/ final class CapabilityCommand implements CommandInterface { public function name(): string { return 'CAPABILITY'; } public function allowedStates(): array { return [ SessionState::NotAuthenticated, SessionState::Authenticated, SessionState::Selected, ]; } public function encode(string $tag, SessionContext $context): RequestFrame { unset($tag, $context); return new RequestFrame('CAPABILITY'); } public function handle(ResponseStream $responses, SessionContext $context): CapabilityResult { $capabilities = []; foreach ($responses as $response) { if ($response instanceof UntaggedResponse && $response->label() === 'CAPABILITY') { $capabilities = array_map('strtoupper', $response->payloadTokens()); } if ($response instanceof TaggedResponse) { if (!$response->isOk()) { throw new ImapException('CAPABILITY failed: ' . $response->text()); } } } $context->replaceCapabilities(...$capabilities); return new CapabilityResult($context->capabilities()); } }