/**
 * Event Storage Interfaces
 *
 * Defines interfaces for event storage and persistence operations
 */
import { CalendarEvent, CreateEventInput, UpdateEventInput, EventFilter, EventSort, EventResults } from './event.interfaces';
/**
 * Storage operation result
 */
export interface StorageResult<T = any> {
    /** Whether operation succeeded */
    success: boolean;
    /** Result data */
    data?: T;
    /** Error message if failed */
    error?: string;
    /** Additional metadata */
    metadata?: Record<string, any>;
}
/**
 * Storage configuration
 */
export interface StorageConfig {
    /** Storage type */
    type: 'memory' | 'localStorage' | 'indexedDB' | 'external';
    /** Storage key prefix */
    keyPrefix?: string;
    /** Maximum storage size */
    maxSize?: number;
    /** Auto-save interval in milliseconds */
    autoSaveInterval?: number;
    /** Encryption settings */
    encryption?: {
        enabled: boolean;
        key?: string;
    };
}
/**
 * Storage statistics
 */
export interface StorageStats {
    /** Total number of events */
    totalEvents: number;
    /** Storage size used */
    sizeUsed: number;
    /** Last sync timestamp */
    lastSync?: Date;
    /** Storage health status */
    health: 'good' | 'warning' | 'error';
}
/**
 * Storage sync status
 */
export interface SyncStatus {
    /** Whether sync is in progress */
    syncing: boolean;
    /** Last sync timestamp */
    lastSync?: Date;
    /** Next scheduled sync */
    nextSync?: Date;
    /** Sync errors */
    errors: string[];
    /** Pending changes count */
    pendingChanges: number;
}
/**
 * Event storage service interface
 */
export interface IEventStorageService {
    /**
     * Initialize storage
     */
    initialize(config: StorageConfig): Promise<StorageResult<void>>;
    /**
     * Get all events
     */
    getAllEvents(): Promise<StorageResult<CalendarEvent[]>>;
    /**
     * Get event by ID
     */
    getEventById(id: string): Promise<StorageResult<CalendarEvent | null>>;
    /**
     * Query events with filters
     */
    queryEvents(filter?: EventFilter, sort?: EventSort, page?: number, pageSize?: number): Promise<StorageResult<EventResults>>;
    /**
     * Create new event
     */
    createEvent(input: CreateEventInput): Promise<StorageResult<CalendarEvent>>;
    /**
     * Update existing event
     */
    updateEvent(input: UpdateEventInput): Promise<StorageResult<CalendarEvent>>;
    /**
     * Delete event
     */
    deleteEvent(id: string): Promise<StorageResult<void>>;
    /**
     * Bulk operations
     */
    bulkCreate(inputs: CreateEventInput[]): Promise<StorageResult<CalendarEvent[]>>;
    bulkUpdate(inputs: UpdateEventInput[]): Promise<StorageResult<CalendarEvent[]>>;
    bulkDelete(ids: string[]): Promise<StorageResult<void>>;
    /**
     * Import events
     */
    importEvents(events: CalendarEvent[]): Promise<StorageResult<CalendarEvent[]>>;
    /**
     * Export events
     */
    exportEvents(filter?: EventFilter): Promise<StorageResult<CalendarEvent[]>>;
    /**
     * Clear all events
     */
    clearAll(): Promise<StorageResult<void>>;
    /**
     * Get storage statistics
     */
    getStats(): Promise<StorageResult<StorageStats>>;
    /**
     * Get sync status
     */
    getSyncStatus(): Promise<StorageResult<SyncStatus>>;
    /**
     * Trigger manual sync
     */
    sync(): Promise<StorageResult<void>>;
    /**
     * Backup events
     */
    backup(): Promise<StorageResult<string>>;
    /**
     * Restore from backup
     */
    restore(backupData: string): Promise<StorageResult<void>>;
    /**
     * Event change subscription
     */
    onEventChanged(callback: (event: CalendarEvent, action: 'created' | 'updated' | 'deleted') => void): () => void;
    /**
     * Storage error subscription
     */
    onError(callback: (error: string) => void): () => void;
}