import { ConfigService } from '@nestjs/config';
import { CredentialsProviderService } from '../common/credentials-provider.service';
export declare class WhatsAppService {
    private readonly configService;
    private readonly credentialsProvider;
    private readonly logger;
    private readonly clientCache;
    constructor(configService: ConfigService, credentialsProvider: CredentialsProviderService);
    private getClient;
    private getPhoneNumberId;
    invalidateClientCache(tenantId?: string): void;
    sendTextMessage(to: string, text: string, tenantId?: string): Promise<string>;
    sendInteractiveButtons(to: string, bodyText: string, buttons: Array<{
        id: string;
        title: string;
    }>, headerText?: string, footerText?: string, tenantId?: string): Promise<string>;
    sendInteractiveList(to: string, bodyText: string, buttonText: string, sections: Array<{
        title?: string;
        rows: Array<{
            id: string;
            title: string;
            description?: string;
        }>;
    }>, headerText?: string, footerText?: string, tenantId?: string): Promise<string>;
    sendTemplate(to: string, templateName: string, languageCode?: string, components?: any[], tenantId?: string): Promise<string>;
    sendImage(to: string, imageUrl: string, caption?: string, tenantId?: string): Promise<string>;
    sendDocument(to: string, documentUrl: string, filename: string, caption?: string, tenantId?: string): Promise<string>;
    downloadMedia(mediaId: string, tenantId?: string): Promise<Buffer>;
    private sendMessage;
    private formatPhoneNumber;
    sendOrderConfirmation(to: string, orderNumber: string, items: Array<{
        name: string;
        quantity: number;
        price: number;
    }>, total: number, tenantId?: string): Promise<string>;
    sendOrderStatusUpdate(to: string, orderNumber: string, status: 'preparing' | 'ready' | 'delivered', tenantId?: string): Promise<string>;
    sendFiadoReminder(to: string, customerName: string, amount: number, dueDate?: string, tenantId?: string): Promise<string>;
    sendLowStockAlert(to: string, products: Array<{
        name: string;
        stock: number;
    }>, tenantId?: string): Promise<string>;
}