import IQueryOptions from '../../Interfaces/Query/IProductQueryOptions';
import { IBatchAction } from './BatchUtils';
import { IDatabaseRef, ISaveOption } from './DatabaseService';
export interface IQuery {
    readonly id?: string;
    readonly limit?: number;
    readonly orderBy?: IQueryOrder;
    readonly startAfter?: string;
    readonly where?: IQueryWhere[];
}
export interface IQueryOrder {
    readonly field: string;
    readonly direction: string;
    readonly cast?: 'string' | 'number' | 'boolean';
}
export interface IQueryWhere {
    readonly field: string;
    readonly operator: '<' | '<=' | '==' | '>' | '>=' | '!=' | 'array-contains' | 'array-contains-any' | 'in';
    readonly value: any;
}
export default class BaseProvider {
    static getDocs: (_path: string, _query: IQueryOptions) => Promise<IDatabaseRef[]>;
    static saveDoc: (_path: string, _id: string, _timestamp: number, _obj: any, _options?: ISaveOption) => Promise<boolean>;
    static addDoc: (__path: string, __obj: any, __noEvent?: boolean) => Promise<string | boolean>;
    static deleteDoc: (__path: string, __id: string, __noEvent?: boolean) => Promise<boolean>;
    static processBatch: (_batch: IBatchAction[], _noEvent?: boolean) => Promise<boolean>;
    static registerListener: (_callback: (_: IDatabaseRef[]) => void, _path: string, _query?: IQueryOptions) => string;
    static unregisterListener: (_id: string) => void;
}