import {Model} from '../Model'
import {Event} from '../../../event/Event'
import {JSONState} from '../../../util'

/**
 * Base class for events that concern an instance of a model.
 */
export abstract class ModelEvent<T extends Model<T>> extends Event {
    /**
     * The instance of the model.
     */
    public instance!: T

    constructor(
        instance?: T,
    ) {
        super()
        if ( instance ) {
            this.instance = instance
        }
    }

    // TODO implement serialization here
    dehydrate(): Promise<JSONState> {
        return Promise.resolve({})
    }

    rehydrate(/* state: JSONState */): void | Promise<void> {
        return undefined
    }
}