import { IChartField } from '@qn-pandora/app-sdk';
import { DrillDownType, IDrillDownToken, IToDrillEventOfType } from '../../constants/drill-down';
import { IBucket, IMetric } from '../../constants/action-event';
export declare const DEFAULT_SPAN = "5m";
/**
 * 提供图表下钻相关的服务：
 *    1. 封装根据点击元素生成约定Event的逻辑
 *    2. 设置下钻相关的token，可作为模版变量使用
 */
export default abstract class ChartDrillDownService<T = any> {
    type: DrillDownType;
    abstract toSearchAutoEvent(params: T): IToDrillEventOfType[DrillDownType.ToSearchAuto];
    abstract toDrillDownToken(params: any): IDrillDownToken;
    toCommonEvent(): undefined;
    toEvent(params: T): {
        buckets: IBucket[];
        metrics?: IMetric[] | undefined;
    } | undefined;
    generateBucket(fieldname: string, value: any, fields: IChartField[]): IBucket;
    generateMetric(fieldname: string, value: any): IMetric;
    generateValidResults(res: IToDrillEventOfType[DrillDownType.ToSearchAuto]): IToDrillEventOfType[DrillDownType.ToSearchAuto];
    isFieldValid(fieldname: string, value: any): boolean;
    constructor(type: DrillDownType);
}