import { OnModuleInit } from '@nestjs/common';
import { StorageService } from '../../storage/services/storage.service';
import { SecurityAlertModel } from '../models/security-status.model';
import { AlarmState, ArmedState, SecurityEventType, Severity } from '../security.constants';
interface EventsQuery {
    limit?: number;
    since?: Date;
    severity?: Severity;
    type?: SecurityEventType;
}
export interface SecurityEventRecord {
    id: string;
    timestamp: Date;
    eventType: SecurityEventType;
    severity: Severity | null;
    alertId: string | null;
    alertType: string | null;
    sourceDeviceId: string | null;
    payload: Record<string, unknown> | null;
}
export declare class SecurityEventsService implements OnModuleInit {
    private readonly storageService;
    private readonly logger;
    private lastKnownAlertIds;
    private lastKnownArmedState;
    private lastKnownAlarmState;
    private initialized;
    private transitionLock;
    constructor(storageService: StorageService);
    onModuleInit(): void;
    findRecent(query?: EventsQuery): Promise<SecurityEventRecord[]>;
    recordAlertTransitions(activeAlerts: SecurityAlertModel[], armedState: ArmedState | null, alarmState: AlarmState | null): Promise<void>;
    private doRecordAlertTransitions;
    recordAcknowledgement(alertId: string, alertType?: string, sourceDeviceId?: string, severity?: Severity): Promise<void>;
    private buildPoint;
    private writePoints;
    private parsePayload;
    private seedSnapshot;
    private updateSnapshot;
}
export {};