import { EventEmitter2 } from "@nestjs/event-emitter";
import { Client } from "@microsoft/microsoft-graph-client";
import { Event, Subscription, ChangeNotification } from "../../types";
import { MicrosoftAuthService } from "../auth/microsoft-auth.service";
import { OutlookWebhookSubscriptionRepository } from "../../repositories/outlook-webhook-subscription.repository";
import { OutlookDeltaLinkRepository } from "../../repositories/outlook-delta-link.repository";
import { MicrosoftOutlookConfig } from "../../interfaces/config/outlook-config.interface";
import { MicrosoftUser } from "../../entities/microsoft-user.entity";
import { Repository } from "typeorm";
import { DeltaSyncService } from "../shared/delta-sync.service";
import { UserIdConverterService } from "../shared/user-id-converter.service";
import { MicrosoftSubscriptionService } from "../subscription/microsoft-subscription.service";
import { OutlookWebhookSubscription } from "../../entities/outlook-webhook-subscription.entity";
import { GraphRateLimiterService } from "../shared/graph-rate-limiter.service";
export declare class CalendarService {
    private readonly microsoftAuthService;
    private readonly webhookSubscriptionRepository;
    private readonly eventEmitter;
    private readonly microsoftConfig;
    private readonly deltaLinkRepository;
    private readonly microsoftUserRepository;
    private readonly deltaSyncService;
    private readonly userIdConverter;
    private readonly subscriptionService;
    private readonly rateLimiter;
    private readonly logger;
    private readonly syncLocks;
    constructor(microsoftAuthService: MicrosoftAuthService, webhookSubscriptionRepository: OutlookWebhookSubscriptionRepository, eventEmitter: EventEmitter2, microsoftConfig: MicrosoftOutlookConfig, deltaLinkRepository: OutlookDeltaLinkRepository, microsoftUserRepository: Repository<MicrosoftUser>, deltaSyncService: DeltaSyncService, userIdConverter: UserIdConverterService, subscriptionService: MicrosoftSubscriptionService, rateLimiter: GraphRateLimiterService);
    getDefaultCalendarId(externalUserId: string): Promise<string>;
    createEvent(event: Partial<Event>, externalUserId: string, calendarId: string): Promise<{
        event: Event;
    }>;
    updateEvent(eventId: string, updates: Partial<Event>, externalUserId: string, calendarId: string): Promise<{
        event: Event;
    }>;
    deleteEvent(event: Partial<Event>, externalUserId: string, calendarId: string): Promise<void>;
    createBatchEvents(events: Partial<Event>[], externalUserId: string, calendarId: string): Promise<{
        index: number;
        success: boolean;
        event?: Event;
        error?: string;
    }[]>;
    updateBatchEvents(updates: Array<{
        eventId: string;
        updates: Partial<Event>;
    }>, externalUserId: string, calendarId: string): Promise<{
        index: number;
        success: boolean;
        event?: Event;
        error?: string;
    }[]>;
    deleteBatchEvents(eventIds: string[], externalUserId: string, calendarId: string): Promise<{
        id: string;
        success: boolean;
        error?: string;
    }[]>;
    createWebhookSubscription(externalUserId: string): Promise<Subscription>;
    renewWebhookSubscription(subscriptionId: string, internalUserId: number): Promise<Subscription>;
    getSubscription(subscriptionId: string): Promise<OutlookWebhookSubscription | null>;
    deleteWebhookSubscription(subscriptionId: string, userId: string | number): Promise<boolean>;
    getActiveSubscription(externalUserId: string): Promise<string | null>;
    renewSubscriptions(): Promise<void>;
    handleOutlookWebhook(notificationItem: ChangeNotification, useStreaming?: boolean): Promise<{
        success: boolean;
        message: string;
    }>;
    fetchAndSortChanges(externalUserId: string, forceReset?: boolean, dateRange?: {
        startDate: Date;
        endDate: Date;
    }): Promise<Event[]>;
    private extractErrorDetails;
    streamCalendarChanges(externalUserId: string, forceReset?: boolean, dateRange?: {
        startDate: Date;
        endDate: Date;
    }, saveDeltaLink?: boolean): AsyncGenerator<Event[], string | null, unknown>;
    getAuthenticatedClient(externalUserId: string): Promise<Client>;
    saveDeltaLink(externalUserId: string, deltaLink: string): Promise<void>;
    getEventDetails(resource: string, externalUserId: string): Promise<Event | null>;
    getEventsBatch(eventIds: string[], externalUserId: string): Promise<Event[]>;
    private getEventsBatchInternal;
    private extractRetryAfterFromResponse;
    importEventsStream(externalUserId: string, options?: {
        startDate?: Date;
        endDate?: Date;
        batchSize?: number;
    }): AsyncGenerator<Event[], void, unknown>;
    handleOutlookWebhookV2(notificationItem: ChangeNotification): Promise<{
        success: boolean;
        message: string;
    }>;
    getRecurringEventInstances(seriesMasterId: string, externalUserId: string, options?: {
        startDate?: Date;
        endDate?: Date;
        batchSize?: number;
    }): AsyncGenerator<Event[], void, unknown>;
    initializeDeltaSync(externalUserId: string): Promise<void>;
    private processChangesStreaming;
    private processChangesBuffering;
    private processDeltaEventChange;
    private validateWebhookSubscription;
    private buildRequestUrl;
}