import { Repository } from 'typeorm';
import { Subscription, SubscriptionStatus } from '../entities/subscription.entity';
import { Invoice } from '../entities/invoice.entity';
import { PaymentMethod } from '../entities/payment-method.entity';
import { CreateSubscriptionDto } from '../dto/create-subscription.dto';
import { UpdateSubscriptionDto, CancelSubscriptionDto } from '../dto/update-subscription.dto';
import { CreatePaymentMethodDto } from '../dto/create-payment-method.dto';
export declare class BillingService {
    private readonly subscriptionRepo;
    private readonly invoiceRepo;
    private readonly paymentMethodRepo;
    constructor(subscriptionRepo: Repository<Subscription>, invoiceRepo: Repository<Invoice>, paymentMethodRepo: Repository<PaymentMethod>);
    createSubscription(dto: CreateSubscriptionDto): Promise<Subscription>;
    getSubscription(tenantId: string): Promise<Subscription | null>;
    updateSubscription(tenantId: string, dto: UpdateSubscriptionDto): Promise<Subscription>;
    cancelSubscription(tenantId: string, dto: CancelSubscriptionDto): Promise<Subscription>;
    changePlan(tenantId: string, newPlanId: string): Promise<Subscription>;
    renewSubscription(tenantId: string): Promise<Subscription>;
    createInvoice(tenantId: string, subscriptionId: string, lineItems: Array<{
        description: string;
        quantity: number;
        unit_price: number;
    }>): Promise<Invoice>;
    getInvoices(tenantId: string, options?: {
        page?: number;
        limit?: number;
    }): Promise<{
        data: Invoice[];
        total: number;
        page: number;
        limit: number;
    }>;
    getInvoice(invoiceId: string, tenantId: string): Promise<Invoice>;
    markInvoicePaid(invoiceId: string, tenantId: string): Promise<Invoice>;
    voidInvoice(invoiceId: string, tenantId: string): Promise<Invoice>;
    private generateInvoiceNumber;
    addPaymentMethod(tenantId: string, dto: CreatePaymentMethodDto): Promise<PaymentMethod>;
    getPaymentMethods(tenantId: string): Promise<PaymentMethod[]>;
    getDefaultPaymentMethod(tenantId: string): Promise<PaymentMethod | null>;
    setDefaultPaymentMethod(paymentMethodId: string, tenantId: string): Promise<PaymentMethod>;
    removePaymentMethod(paymentMethodId: string, tenantId: string): Promise<void>;
    getBillingSummary(tenantId: string): Promise<{
        subscription: Subscription | null;
        defaultPaymentMethod: PaymentMethod | null;
        pendingInvoices: number;
        totalDue: number;
    }>;
    checkSubscriptionStatus(tenantId: string): Promise<{
        isActive: boolean;
        daysRemaining: number;
        status: SubscriptionStatus;
    }>;
}