/**
 * Event Notification Interfaces
 *
 * Defines interfaces for event notifications, reminders, and alerts
 */
import { CalendarEvent } from './event.interfaces';
/**
 * Notification types
 */
export type NotificationType = 'reminder' | 'starting' | 'ending' | 'cancelled' | 'rescheduled' | 'invitation' | 'response' | 'conflict' | 'overdue' | 'daily_summary' | 'weekly_summary';
/**
 * Notification channels
 */
export type NotificationChannel = 'popup' | 'email' | 'sms' | 'push' | 'webhook' | 'slack' | 'teams' | 'custom';
/**
 * Notification priority
 */
export type NotificationPriority = 'low' | 'normal' | 'high' | 'urgent';
/**
 * Notification template
 */
export interface NotificationTemplate {
    /** Template ID */
    id: string;
    /** Template name */
    name: string;
    /** Notification type */
    type: NotificationType;
    /** Supported channels */
    channels: NotificationChannel[];
    /** Subject template */
    subject: string;
    /** Body template (supports placeholders) */
    body: string;
    /** HTML body template */
    htmlBody?: string;
    /** Placeholders available */
    placeholders: string[];
    /** Default priority */
    defaultPriority: NotificationPriority;
    /** Template variables */
    variables?: Record<string, any>;
}
/**
 * Notification configuration
 */
export interface NotificationConfig {
    /** User ID */
    userId: string;
    /** Enabled notification types */
    enabledTypes: NotificationType[];
    /** Channel preferences per type */
    channelPreferences: Record<NotificationType, NotificationChannel[]>;
    /** Quiet hours */
    quietHours?: {
        start: string;
        end: string;
        timeZone: string;
        days?: number[];
    };
    /** Digest settings */
    digestSettings?: {
        enabled: boolean;
        frequency: 'daily' | 'weekly';
        time: string;
        channel: NotificationChannel;
    };
    /** Custom thresholds */
    customThresholds?: Record<string, number>;
}
/**
 * Notification request
 */
export interface NotificationRequest {
    /** Unique ID */
    id: string;
    /** Notification type */
    type: NotificationType;
    /** Target user */
    userId: string;
    /** Related event */
    event: CalendarEvent;
    /** Delivery channel */
    channel: NotificationChannel;
    /** Priority */
    priority: NotificationPriority;
    /** Subject */
    subject: string;
    /** Message body */
    body: string;
    /** HTML body */
    htmlBody?: string;
    /** Scheduled delivery time */
    scheduledAt: Date;
    /** Expiration time */
    expiresAt?: Date;
    /** Retry configuration */
    retryConfig?: {
        maxAttempts: number;
        retryDelay: number;
        backoffMultiplier: number;
    };
    /** Custom data */
    customData?: Record<string, any>;
}
/**
 * Notification status
 */
export interface NotificationStatus {
    /** Notification ID */
    id: string;
    /** Current status */
    status: 'pending' | 'sent' | 'delivered' | 'failed' | 'cancelled' | 'expired';
    /** Delivery attempts */
    attempts: number;
    /** Last attempt time */
    lastAttempt?: Date;
    /** Next retry time */
    nextRetry?: Date;
    /** Error details */
    error?: string;
    /** Delivery timestamp */
    deliveredAt?: Date;
    /** User interaction */
    interaction?: {
        opened: boolean;
        clicked: boolean;
        dismissed: boolean;
        timestamp: Date;
    };
}
/**
 * Notification history
 */
export interface NotificationHistory {
    /** History ID */
    id: string;
    /** User ID */
    userId: string;
    /** Notification type */
    type: NotificationType;
    /** Related event ID */
    eventId: string;
    /** Channel used */
    channel: NotificationChannel;
    /** Sent timestamp */
    sentAt: Date;
    /** Status */
    status: NotificationStatus['status'];
    /** Subject */
    subject: string;
    /** Interaction data */
    interaction?: NotificationStatus['interaction'];
}
/**
 * Bulk notification request
 */
export interface BulkNotificationRequest {
    /** Bulk operation ID */
    batchId: string;
    /** Notification requests */
    notifications: NotificationRequest[];
    /** Batch options */
    options: {
        /** Parallel processing limit */
        parallelLimit?: number;
        /** Continue on errors */
        continueOnError?: boolean;
        /** Progress callback */
        onProgress?: (completed: number, total: number) => void;
    };
}
/**
 * Notification analytics
 */
export interface NotificationAnalytics {
    /** Date range */
    dateRange: {
        start: Date;
        end: Date;
    };
    /** Total notifications sent */
    totalSent: number;
    /** Delivery rate by channel */
    deliveryRates: Record<NotificationChannel, number>;
    /** Open rates by type */
    openRates: Record<NotificationType, number>;
    /** Click-through rates */
    clickRates: Record<NotificationType, number>;
    /** Most effective channels */
    topChannels: Array<{
        channel: NotificationChannel;
        effectiveness: number;
    }>;
    /** User engagement scores */
    engagementScores: Record<string, number>;
    /** Error statistics */
    errorStats: Record<string, number>;
}
/**
 * Event notification service interface
 */
export interface IEventNotificationService {
    /**
     * Initialize notification service
     */
    initialize(defaultConfig?: Partial<NotificationConfig>): Promise<void>;
    /**
     * Send immediate notification
     */
    sendNotification(request: NotificationRequest): Promise<NotificationStatus>;
    /**
     * Schedule notification
     */
    scheduleNotification(request: NotificationRequest): Promise<string>;
    /**
     * Send bulk notifications
     */
    sendBulkNotifications(request: BulkNotificationRequest): Promise<NotificationStatus[]>;
    /**
     * Cancel scheduled notification
     */
    cancelNotification(notificationId: string): Promise<void>;
    /**
     * Get notification status
     */
    getNotificationStatus(notificationId: string): Promise<NotificationStatus | null>;
    /**
     * Configure user notification preferences
     */
    configureUserNotifications(userId: string, config: NotificationConfig): Promise<void>;
    /**
     * Get user notification configuration
     */
    getUserNotificationConfig(userId: string): Promise<NotificationConfig | null>;
    /**
     * Create notification template
     */
    createTemplate(template: NotificationTemplate): Promise<void>;
    /**
     * Update notification template
     */
    updateTemplate(templateId: string, updates: Partial<NotificationTemplate>): Promise<void>;
    /**
     * Get notification templates
     */
    getTemplates(type?: NotificationType): Promise<NotificationTemplate[]>;
    /**
     * Delete notification template
     */
    deleteTemplate(templateId: string): Promise<void>;
    /**
     * Process event for automatic notifications
     */
    processEventNotifications(event: CalendarEvent, action: 'created' | 'updated' | 'deleted' | 'reminder'): Promise<void>;
    /**
     * Get notification history
     */
    getNotificationHistory(userId?: string, dateRange?: {
        start: Date;
        end: Date;
    }, type?: NotificationType): Promise<NotificationHistory[]>;
    /**
     * Mark notification as read/interacted
     */
    markNotificationInteraction(notificationId: string, interaction: 'opened' | 'clicked' | 'dismissed'): Promise<void>;
    /**
     * Get pending notifications
     */
    getPendingNotifications(userId?: string): Promise<NotificationRequest[]>;
    /**
     * Get notification analytics
     */
    getAnalytics(dateRange: {
        start: Date;
        end: Date;
    }, userId?: string): Promise<NotificationAnalytics>;
    /**
     * Test notification delivery
     */
    testNotification(userId: string, channel: NotificationChannel, message: string): Promise<NotificationStatus>;
    /**
     * Cleanup expired notifications
     */
    cleanupExpiredNotifications(): Promise<number>;
    /**
     * Subscribe to notification events
     */
    onNotificationSent(callback: (notification: NotificationRequest, status: NotificationStatus) => void): () => void;
    /**
     * Subscribe to notification failures
     */
    onNotificationFailed(callback: (notification: NotificationRequest, error: string) => void): () => void;
}