import { OnInit, OnDestroy, OnChanges, SimpleChanges } from '@angular/core';
import { SubscriptionsService, PaymentMethodsService, InvoicesService, UsageService } from '../../services';
import { SubscriptionWithRelations, PaymentMethod, Invoice, UsageSummary } from '../../models';
import * as i0 from "@angular/core";
/**
 * Complete billing management widget with subscription, payment methods, and invoices
 *
 * @example
 * ```html
 * <subtrak-billing-portal
 *   [customerId]="currentCustomerId">
 * </subtrak-billing-portal>
 * ```
 */
export declare class BillingPortalComponent implements OnInit, OnDestroy, OnChanges {
    private subscriptionsService;
    private paymentMethodsService;
    private invoicesService;
    private usageService;
    /**
     * Customer ID to display billing information for
     */
    customerId: string;
    subscription: SubscriptionWithRelations | null;
    paymentMethods: PaymentMethod[];
    recentInvoices: Invoice[];
    usageSummaries: UsageSummary[];
    loading: boolean;
    error: string | null;
    loadingPaymentMethods: boolean;
    loadingInvoices: boolean;
    private destroy$;
    constructor(subscriptionsService: SubscriptionsService, paymentMethodsService: PaymentMethodsService, invoicesService: InvoicesService, usageService: UsageService);
    ngOnInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    ngOnDestroy(): void;
    loadBillingData(): void;
    private loadUsageData;
    /**
     * Handle upgrade button click
     */
    onUpgradeClicked(): void;
    /**
     * Remove a payment method
     */
    removePaymentMethod(paymentMethodId: string): void;
    /**
     * Set payment method as default
     */
    setDefaultPaymentMethod(paymentMethodId: string): void;
    /**
     * Get payment method display text
     */
    getPaymentMethodDisplay(pm: PaymentMethod): string;
    /**
     * Get payment method expiry display
     */
    getExpiryDisplay(pm: PaymentMethod): string;
    /**
     * Format invoice date
     */
    formatDate(dateString: string): string;
    /**
     * Format currency amount
     */
    formatAmount(amount: string, currency: string): string;
    /**
     * Get invoice status class
     */
    getInvoiceStatusClass(status: string): string;
    /**
     * Download invoice PDF
     */
    downloadInvoice(invoice: Invoice): void;
    /**
     * Format usage value
     */
    formatUsage(value: string): string;
    /**
     * Track by function for payment methods
     */
    trackByPaymentMethodId(index: number, pm: PaymentMethod): string;
    /**
     * Track by function for invoices
     */
    trackByInvoiceId(index: number, invoice: Invoice): string;
    /**
     * Track by function for usage summaries
     */
    trackByUsageId(index: number, usage: UsageSummary): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<BillingPortalComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<BillingPortalComponent, "subtrak-billing-portal", never, { "customerId": { "alias": "customerId"; "required": true; }; }, {}, never, never, true, never>;
}