import { IStore } from '../IStore';

/**
 * EventStore - IndexedDB ObjectStore definition for calendar events
 *
 * Defines schema, indexes, and store creation logic.
 * Part of modular storage architecture where each entity has its own folder.
 */
export class EventStore implements IStore {
  /** ObjectStore name in IndexedDB (static for backward compatibility) */
  static readonly STORE_NAME = 'events';

  /** ObjectStore name in IndexedDB (instance property for IStore interface) */
  readonly storeName = EventStore.STORE_NAME;

  /**
   * Create the events ObjectStore with indexes
   * Called during database upgrade (onupgradeneeded)
   *
   * @param db - IDBDatabase instance
   */
  create(db: IDBDatabase): void {
    // Create ObjectStore with 'id' as keyPath
    const store = db.createObjectStore(EventStore.STORE_NAME, { keyPath: 'id' });

    // Index: start (for date range queries)
    store.createIndex('start', 'start', { unique: false });

    // Index: end (for date range queries)
    store.createIndex('end', 'end', { unique: false });

    // Index: syncStatus (for filtering by sync state)
    store.createIndex('syncStatus', 'syncStatus', { unique: false });

    // Index: resourceId (CRITICAL for resource-mode filtering)
    store.createIndex('resourceId', 'resourceId', { unique: false });

    // Index: customerId (for customer-centric queries)
    store.createIndex('customerId', 'customerId', { unique: false });

    // Index: bookingId (for event-to-booking lookups)
    store.createIndex('bookingId', 'bookingId', { unique: false });

    // Compound index: startEnd (for optimized range queries)
    store.createIndex('startEnd', ['start', 'end'], { unique: false });
  }
}