import { CreateIndexesOptions, IndexDescription } from 'mongodb';
import { Type } from '@nestjs/common';
import { EntityInterface } from '../entity/interfaces';
export declare enum CascadeType {
    DELETE = "DELETE"
}
export interface RelationshipCascade<Child extends EntityInterface = any> {
    model: Child;
    cascade: CascadeType[];
    property: string;
    isArray?: boolean;
}
export type RelationshipTypeDescriptor<Relationship extends EntityInterface> = (obj?: any) => Type<Relationship> | false;
export interface PossibleTypes {
    property: string;
    values: string[];
}
export interface ChildRelationshipMetadata {
    property: string;
    possibleTypes?: PossibleTypes;
}
export interface BaseRelationshipMetadata {
    isArray?: boolean;
    cascade?: CascadeType[];
    index?: {
        description?: IndexDescription & CreateIndexesOptions;
    };
    possibleTypes?: PossibleTypes;
}
export interface RelationshipMetadataOptions<R extends EntityInterface> extends BaseRelationshipMetadata {
    type: RelationshipTypeDescriptor<R> | Type<R> | string;
}
export interface RelationshipMetadata<R extends EntityInterface> extends BaseRelationshipMetadata {
    type: Type<R>;
}
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