import mongoose, { Document } from 'mongoose';
export interface IClient extends Document {
    clientId: string;
    name: string;
    email?: string;
    apiKeyHash: string;
    isActive: boolean;
    createdAt: Date;
    updatedAt: Date;
    lastUsedAt?: Date;
    metadata?: Record<string, any>;
}
/**
 * Generate a unique client ID
 */
export declare function generateClientId(): string;
/**
 * Generate an API key in format: sk_live_<random> or sk_test_<random>
 */
export declare function generateApiKey(environment?: 'live' | 'test'): string;
export declare const Client: mongoose.Model<IClient, {}, {}, {}, mongoose.Document<unknown, {}, IClient, {}, {}> & IClient & Required<{
    _id: mongoose.Types.ObjectId;
}> & {
    __v: number;
}, any>;