/// <reference types="node" />
export type AggregationDirection = 'asc' | 'desc';
export type AggregationMetricOp = 'avg' | 'sum' | 'count' | 'min' | 'max';
export interface SearchAggregationMetric {
    op: AggregationMetricOp;
    field_name: string;
}
export interface SearchAggregationOrder {
    key: string;
    direction: AggregationDirection;
}
export interface SearchAggregationSort {
    field_name: string;
    direction: AggregationDirection;
}
export interface SearchAggregationTopHits {
    size: number;
    sort?: SearchAggregationSort[];
}
/** Bucket aggregation configuration for a search request. */
export interface SearchAggregation {
    fields: string[];
    size: number;
    metrics?: Record<string, SearchAggregationMetric>;
    order?: SearchAggregationOrder[];
    top_hits?: SearchAggregationTopHits;
    sub_aggregation?: SearchAggregation;
}
export interface SearchAggregationSpec extends SearchAggregation {
    metrics: Record<string, SearchAggregationMetric>;
    order: SearchAggregationOrder[];
    top_hits?: SearchAggregationTopHits & {
        sort: SearchAggregationSort[];
    };
    sub_aggregation?: SearchAggregationSpec;
}
export type AggregationValue = string | number | boolean | Buffer;
export interface AggregationBucketKey {
    field_id: string | number;
    field_name: string;
    value?: AggregationValue;
}
export interface AggregationHit {
    [field_name: string]: AggregationValue | undefined;
    score: number;
}
export interface AggregationBucket {
    key: AggregationBucketKey[];
    count: string | number;
    metrics: Record<string, AggregationValue | undefined>;
    hits: AggregationHit[];
    sub_groups: AggregationBucket[];
}
export interface ProtoAggregationValue {
    value?: string;
    int_val?: string | number;
    double_val?: number;
    string_val?: string;
    bool_val?: boolean;
}
export interface ProtoAggregationHitField extends ProtoAggregationValue {
    field_id: string | number;
    field_name: string;
    float_val?: number;
    bytes_val?: Buffer;
}
export interface ProtoAggregationHit {
    pk?: string;
    int_pk?: string | number;
    str_pk?: string;
    score: number;
    fields: ProtoAggregationHitField[];
}
export interface ProtoAggregationBucket {
    key: (ProtoAggregationValue & {
        field_id: string | number;
        field_name: string;
    })[];
    count: string | number;
    metrics: Record<string, ProtoAggregationValue>;
    hits: ProtoAggregationHit[];
    sub_groups: ProtoAggregationBucket[];
}