/**
 * Relation handling code generation for CRUD services.
 *
 * These functions are the canonical source of truth for the relation-mapping
 * logic used in the EJS template (api-crud-data-access.service.ts__tmpl__).
 * The template contains identical copies of these functions so EJS can
 * execute them without external imports.  Any change here MUST be mirrored
 * in the template, and vice versa.
 */
export interface ModelField {
    name: string;
    type: string;
    kind?: string;
    isId?: boolean;
    isList: boolean;
    isOptional: boolean;
    isVirtual?: boolean;
    isReadOnly?: boolean;
    hasDefaultValue?: boolean;
    default?: unknown;
    relationName?: string;
    relationFromFields?: string[];
    relationToFields?: string[];
    relationOnDelete?: string;
    relationOnUpdate?: string;
    isGenerated?: boolean;
    isUpdatedAt?: boolean;
    documentation?: string;
}
export interface ModelLike {
    fields: ModelField[];
}
export interface VirtualRelationField {
    name: string;
    type: string;
    isList: boolean;
    isOptional: boolean;
    isVirtual: boolean;
    relationName: string;
    relatedField: string;
}
export interface ForeignKeyRelationField {
    fieldName: string;
    relationName: string;
    isRequired: boolean;
    isList: boolean;
}
export declare function getRelationFields(model: ModelLike): ModelField[];
export declare function getVirtualRelationFields(model: ModelLike): VirtualRelationField[];
export declare function getForeignKeyRelationFields(model: ModelLike): ForeignKeyRelationField[];
export declare function generateRelationHandling(model: ModelLike, operation: 'create' | 'update'): string;