import { PrismaService } from '../prisma/prisma.service';
export declare class AdminController {
    private prisma;
    constructor(prisma: PrismaService);
    backend(): Promise<{
        status: string;
        timestamp: string;
        service: string;
        version: string;
        database: {
            provider: string;
            users: number;
            ledgerAccounts: number;
            items: number;
        };
    }>;
    health(): Promise<{
        status: string;
        database: string;
        timestamp: string;
        error?: undefined;
    } | {
        status: string;
        database: string;
        error: string;
        timestamp: string;
    }>;
}