import { Server as HTTPServer } from 'http';
declare class WebSocketService {
    private io;
    private dataUpdateIntervals;
    private lastDeviceData;
    private lastConnectionStats;
    private lastMessageStats;
    private lastRecentConnections;
    private lastRecentMessages;
    private lastDeviceStatusDistribution;
    constructor(server: HTTPServer);
    private initializeSocketEvents;
    private getDeviceData;
    private getConnectionStats;
    private getMessageStats;
    private getRecentConnections;
    private getRecentMessages;
    private getDeviceStatusDistribution;
    private hasDeviceDataChanged;
    private hasConnectionStatsChanged;
    private hasMessageStatsChanged;
    private hasRecentConnectionsChanged;
    private hasRecentMessagesChanged;
    private hasDeviceStatusDistributionChanged;
    startRealDataUpdates(): void;
    stopDataUpdates(): void;
    private checkDeviceStatusChanges;
    private checkDeviceConnectionChanges;
    broadcastRelayState(deviceId: string, status: string): void;
    broadcastRssiUpdate(deviceId: string, rssi: number): void;
    broadcastWifiInfoUpdate(deviceId: string, ssid: string): void;
    broadcastWifiStatusUpdate(deviceId: string, status: string, configId?: number): void;
    getConnectedClientsCount(): number;
}
export declare function setWebSocketService(service: WebSocketService): void;
export declare function getWebSocketService(): WebSocketService | null;
export default WebSocketService;
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