/**
 * MockDatabaseConnection — in-memory stub for tests.
 *
 * Substitutes for DatabaseConnection when better-sqlite3 is unavailable
 * (e.g. native binary built for wrong platform).
 * All mutation methods are no-ops; read methods return empty results.
 */

import { QueryBuilder } from '../../server/domains/shared/utils/QueryBuilder.js';
import { QueryAudit } from '../../server/domains/shared/db/QueryAudit.js';

export class MockDatabaseConnection {
  private audit = new QueryAudit();

  all<T = Record<string, unknown>>(_qb: QueryBuilder): T[] {
    return [];
  }

  get<T = Record<string, unknown>>(_qb: QueryBuilder): T | null {
    return null;
  }

  run(_qb: QueryBuilder): number {
    return 0;
  }

  transaction<T>(fn: () => T): T {
    return fn();
  }

  raw(): never {
    throw new Error('MockDatabaseConnection: raw() not available in tests');
  }

  getAudit(): QueryAudit {
    return this.audit;
  }

  clearStatementCache(): void {}

  printAudit(): void {}
}