import { IEntityServiceResponse } from "./entity.utils.interface";
export declare enum AggregationOperation {
    SUM = "sum",
    MAX = "max",
    MIN = "min",
    COUNT = "count",
    AVG = "avg"
}
export declare enum RetainEntities {
    YES = "yes",
    NO = "no"
}
export type NumericKeys<T> = {
    [K in keyof T]: T[K] extends number ? K : never;
}[keyof T];
export type AggregationFields<T> = {
    [K in NumericKeys<T> as `sum_${string & K}`]?: number;
} & {
    [K in NumericKeys<T> as `avg_${string & K}`]?: number;
} & {
    [K in keyof T as `max_${string & K}`]?: number;
} & {
    [K in keyof T as `min_${string & K}`]?: number;
} & {
    [K in keyof T as `count_${string & K}`]?: number;
};
export interface IEntityAggregationConfig<T> {
    retainEntities: boolean;
    groupingBy: (keyof T)[];
    sum?: NumericKeys<T>[];
    max?: (keyof T)[];
    min?: (keyof T)[];
    count?: (keyof T)[];
    avg?: NumericKeys<T>[];
}
export interface IBaseEntityServiceResponseWithAggregation<T> {
    baseEntities: (T & AggregationFields<T>)[] | T[];
    relatedEntities?: IEntityServiceResponse;
}