import { Signal } from '@pilotlab/signals';
import IAttribute from '../attributes/interfaces/iAttribute';
import IAttributes from '../attributes/interfaces/iAttributes';
import IAttributeChangeOptions from '../attributes/interfaces/iAttributeChangeOptions';
import IAttributeUpdateTracker from '../attributes/interfaces/iAttributeUpdateTracker';
import AttributeEventArgs from '../attributes/attributeEventArgs';
import { ProgressTracker } from '@pilotlab/progress';
import { IInitializable } from '@pilotlab/initializable';
import { IPromise } from "@pilotlab/result";
import IDataStore from "./iDataStore";


export interface IData extends IInitializable {
    readonly revision:string;


    /**
     * An SHA-1 hash representing the precise contents of the associated blob or text.
     * Can be used to check the uniqueness of a data object to avoid storing duplicates.
     */
    readonly hash:IAttribute;
    isAutoHash:boolean;


    store:IDataStore;


    isSaveDataTypes:boolean;


    /**
     * Toggles auto-save functionality.
     * Can be used to pause auto-saving while changes to the data are batched.
     */
    isAutoSave:boolean;


    /*====================================================================*
     START: Signals
     *====================================================================*/
    storeSet:Signal<IDataStore>;


    /**
     * Dispatched after a response is received back from the data store when data has been saved.
     * @type {Signal<any>} Completes with the response from the data store.
     */
    saved:Signal<any>;


    saveTriggered:Signal<AttributeEventArgs<any>>;


    /*====================================================================*
     START: Public Methods
     *====================================================================*/

    save():IPromise<any>;
    autoSave():void;
    delete():IPromise<boolean>;


    update(
        data:(IData | IAttributes | Object | string),
        changeOptions?:IAttributeChangeOptions,
        progressTracker?:ProgressTracker
    ):IAttributeUpdateTracker;
}


export default IData;