import { type Address } from 'viem';
import type { WalletStore } from '../connectors/index.js';
import { type SubscriptionInfo, type UserSubscription, type SubscriptionPlan } from '../types/subscription.js';
import type { SubscriptionNetworkConfig } from '../types/subscription-config.js';
export declare class SubscriptionService {
    private walletStore;
    private networkConfig;
    private publicClient;
    private bufferPercentage;
    constructor(walletStore: WalletStore, networkConfig: SubscriptionNetworkConfig, bufferPercentage?: number);
    getSubscriptionInfo(userAddress: Address): Promise<SubscriptionInfo>;
    hasActiveSubscription(userAddress: Address): Promise<boolean>;
    getUserSubscription(userAddress: Address): Promise<UserSubscription | null>;
    getAllPlans(): Promise<SubscriptionPlan[]>;
    getPlan(tier: number): Promise<SubscriptionPlan>;
    subscribe(tier: number, period: number, referrer?: Address): Promise<void>;
    renew(period: number): Promise<void>;
    upgrade(newTier?: number, period?: number): Promise<void>;
    downgrade(newTier?: number, period?: number): Promise<void>;
}