import { QueryParams } from '../types/query-params';
import { SortCol, PropertyValue } from '../types/query';
import { GsbSaveRequest } from '../types/requests';
/**
 * ServiceHelper provides common utility functions for GSB services.
 * It standardizes operations like query preparation, entity validation, etc.
 */
export declare class ServiceHelper {
    /**
     * Prepares a standard query with pagination, sorting, and tenant info
     *
     * @param entityDefName - Entity name to query
     * @param page - Page number (1-based)
     * @param pageSize - Number of items per page
     * @param whereClauses - Optional where clauses for filtering
     * @param sortCols - Optional sort columns (defaults to lastUpdateDate desc)
     * @param selectCols - Optional columns to select
     * @param calcTotalCount - Whether to calculate total count (default: true)
     * @returns Prepared QueryParams object
     */
    static prepareQuery(entityDefName: string, page?: number, pageSize?: number, whereClauses?: PropertyValue[], sortCols?: SortCol[], selectCols?: string[], calcTotalCount?: boolean): QueryParams<any>;
    /**
     * Prepares a standard save request with tenant information
     *
     * @param entityDefName - Entity name to save
     * @param entity - Entity data to save
     * @param isNew - Whether this is a new entity
     * @returns Prepared GsbSaveRequest object
     */
    static prepareSaveRequest(entityDefName: string, entity: any, isNew?: boolean): GsbSaveRequest;
    /**
     * Gets authorization header with GSB token
     *
     * @returns Authorization header or undefined if no token
     */
    static getAuthHeader(): {
        Authorization: string;
    } | undefined;
    /**
     * Gets tenant information for a request
     *
     * @returns Tenant code or undefined if no tenant
     */
    static getTenantInfo(): string | undefined;
    /**
     * Validates if a user has permission to access a resource
     *
     * @param permissionKey - The permission key to check
     * @param userPermissions - The user's permissions
     * @returns True if user has permission, false otherwise
     */
    static hasPermission(permissionKey: string, userPermissions: string[]): boolean;
    /**
     * Checks if a reference property name already exists in the referenced entity
     *
     * @param refPropName - The reference property name to check
     * @param refEntityId - The ID of the referenced entity
     * @param tables - Array of available tables/entities
     * @returns Object containing validation result and message
     */
    static checkRefPropNameUniqueness(refPropName: string, refEntityId: string, tables: any[]): {
        isValid: boolean;
        message: string;
    };
}