import {FactoryProducer, Instantiable} from '../../../di'
import {Maybe} from '../../../util'
import {Queue} from './Queue'
import {SyncQueue} from './SyncQueue'
import {ConfiguredSingletonFactory} from '../../../di/factory/ConfiguredSingletonFactory'

/**
 * Dependency container factory that matches the abstract Queue token, but
 * produces an instance of whatever Queue driver is configured in the `server.queue.driver` config.
 */
@FactoryProducer()
export class QueueFactory extends ConfiguredSingletonFactory<Queue> {
    protected getConfigKey(): string {
        return 'server.queue.driver'
    }

    protected getDefaultImplementation(): Instantiable<Queue> {
        return SyncQueue
    }

    protected getAbstractImplementation(): any {
        return Queue
    }

    protected getDefaultImplementationWarning(): Maybe<string> {
        return 'You are using the default synchronous queue driver. It is recommended you configure a background queue driver instead.'
    }
}