import {Instantiable, FactoryProducer} from '../../di'
import {InMemCache, Maybe} from '../../util'
import {Cache} from '../../util'
import {ConfiguredSingletonFactory} from '../../di/factory/ConfiguredSingletonFactory'

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

    protected getDefaultImplementation(): Instantiable<Cache> {
        return InMemCache
    }

    protected getAbstractImplementation(): any {
        return Cache
    }

    protected getDefaultImplementationWarning(): Maybe<string> {
        return 'You are using the default memory-based cache driver. It is recommended you configure a persistent cache driver instead.'
    }
}