import type { Address } from 'viem';
export declare const SubscriptionStatus: {
    readonly ACTIVE: 0;
    readonly EXPIRED: 1;
};
export type SubscriptionStatus = (typeof SubscriptionStatus)[keyof typeof SubscriptionStatus];
export interface SubscriptionPlan {
    tier: number;
    monthlyPrice: bigint;
    yearlyPrice: bigint;
    features: string[];
}
export interface UserSubscription {
    user: Address;
    referrer: Address;
    tier: number;
    period: number;
    startTime: bigint;
    endTime: bigint;
    paidAmount: bigint;
    rewardEarned: bigint;
}
export interface SubscriptionInfo {
    subscription: UserSubscription | null;
    status: SubscriptionStatus;
    plans: SubscriptionPlan[];
    canUpgrade: boolean;
    canDowngrade: boolean;
    canRenew: boolean;
    daysRemaining: number;
}
export interface SubscriptionActions {
    subscribe: (tier: number, period: number, referrer?: Address) => Promise<void>;
    renew: (period: number) => Promise<void>;
    upgrade: (period: number) => Promise<void>;
    downgrade: (period: number) => Promise<void>;
}
export interface SubscriptionContractMethods {
    hasActiveSubscription: (user: Address) => Promise<boolean>;
    getUserSubscription: (user: Address) => Promise<UserSubscription>;
    getPlan: (tier: number) => Promise<SubscriptionPlan>;
    getAllPlans: () => Promise<SubscriptionPlan[]>;
    subscribe: (tier: number, period: number, referrer: Address, value: bigint) => Promise<void>;
    renew: (period: number, value: bigint) => Promise<void>;
    upgrade: (newTier: number, value: bigint) => Promise<void>;
    downgrade: (newTier: number, period: number, value: bigint) => Promise<void>;
}