export interface MqttMessage {
    id?: number;
    clientid: string;
    topic: string;
    payload?: string;
    qos: number;
    retain: number;
    message_id?: string;
    message_type: 'publish' | 'subscribe' | 'unsubscribe';
    timestamp: number;
    node: string;
    username?: string;
    proto_ver: number;
    payload_format?: string;
    created_at?: Date;
    message_time: Date;
}
export declare class MqttMessageModel {
    static getAll(limit?: number, offset?: number): Promise<MqttMessage[]>;
    static getByClientId(clientid: string, limit?: number): Promise<MqttMessage[]>;
    static getByTopic(topic: string, limit?: number): Promise<MqttMessage[]>;
    static getByType(messageType: string, limit?: number): Promise<MqttMessage[]>;
    static getByTimeRange(startTime: Date, endTime: Date): Promise<MqttMessage[]>;
    static getCount(): Promise<number>;
    static getTypeStats(): Promise<any[]>;
    static getQosStats(): Promise<any[]>;
    static getSizeStats(): Promise<any[]>;
    static getHourlyStats(hours?: number): Promise<any[]>;
    static getPopularTopics(limit?: number): Promise<any[]>;
    static getActiveClients(limit?: number): Promise<any[]>;
    static create(messageData: Omit<MqttMessage, 'id' | 'created_at'>): Promise<MqttMessage>;
    static getById(id: number): Promise<MqttMessage | null>;
    static getHeatmapData(days?: number): Promise<any[]>;
}
//# sourceMappingURL=mqttMessage.d.ts.map