ArtisanPackUI\Bookings\Contracts holds eleven interfaces. Six are replaceable seams — bind your own implementation in a service provider and the package uses it instead of the default:
| Contract | Replaces | Default |
|---|---|---|
SlotResolver |
how availability rules become bookable slots | AvailabilityService |
RoundRobinStrategy |
which provider is assigned to a slot | LeastRecentlyAssignedStrategy |
CalendarSyncDriver |
how one external calendar system is talked to | IcalFeedDriver, GoogleCalendarDriver |
NotificationChannel |
how one lifecycle message is delivered | CMS or Laravel channel |
SmsDriver |
which gateway a text message is handed to | null (logs only) |
MeetingTypeRegistry |
which shapes a service can be booked in | MeetingTypeRegistry |
The other five are internal interfaces rather than seams you bind: CalendarDriverRegistry (the registry drivers register through), GoogleTokenProvider (bound by artisanpack-ui/google), TwoWayCalendarDriver (the two-way surface a read-back driver adds on top of CalendarSyncDriver), MeetingType (contributed through a filter, below), and ResolvesHostAddresses (the webhook guard's host resolver, replaceable for split-horizon DNS).
Binding a contract
use ArtisanPackUI\Bookings\Contracts\RoundRobinStrategy;
public function register(): void
{
$this->app->bind( RoundRobinStrategy::class, MyFairnessStrategy::class );
}
MeetingTypeRegistry is the odd one out
Bind it only to replace the registry itself. To add a meeting type — the common case — implement Contracts\MeetingType (or construct a RegisteredMeetingType) and contribute it through the ap.bookings.registeredMeetingTypes filter. No binding required. See Hooks & Filters.
CalendarSyncDriver
The calendar driver contract is a seam and a plugin point at once: bind or register a driver to talk to a calendar system the package does not ship. Its full method set and rules are covered under Calendar Sync.
SmsDriver
One method — send( string $phone, string $message ): void — handed a number and a string, knowing nothing about bookings. Name your class in notifications.sms_driver or bind the contract. See Text Messages.
Site resolution is not on this list
Site resolution is deliberately not a bookings contract. It is ArtisanPackUI\Core\Contracts\SiteResolver, bound once for the whole ecosystem — see Multi-Site.