/**
 * metona-sqlark — 入口文件
 * @module metona-sqlark
 * @version 0.4.1
 *
 * 前端关系型数据库，内存与磁盘双模式。
 * 支持 Query Builder 链式 API 和 SQL 字符串查询。
 */

import { MetonaSqlark } from './core';
import type { DatabaseConfig } from './constants';
import { VERSION } from './constants';

// 连接池管理器（side-effect: 注入 MetonaSqlark.connect / disconnect 等静态方法）
import './connection-manager';

// ---------------------------------------------------------------------------
//  工厂函数
// ---------------------------------------------------------------------------

/**
 * 创建数据库实例并初始化
 *
 * @example
 * ```ts
 * const db = await MetonaSqlark.create({
 *   name: 'my-app',
 *   mode: 'hybrid',
 * });
 *
 * await db.defineTable('users', {
 *   id: { type: 'string', primaryKey: true },
 *   name: { type: 'string', required: true },
 * });
 *
 * await db.table('users').insert({ id: '1', name: 'Alice' });
 * const results = await db.query('SELECT * FROM users');
 * ```
 */
async function create(config: DatabaseConfig): Promise<MetonaSqlark> {
  const db = new MetonaSqlark(config);
  await db.init();
  return db;
}

// ---------------------------------------------------------------------------
//  全局 API
// ---------------------------------------------------------------------------

const api = {
  VERSION,
  version: VERSION,
  create,
  MetonaSqlark,
  MeSqlark: MetonaSqlark,
};

// 浏览器全局挂载
declare global { interface Window { MetonaSqlark: typeof api; MeSqlark: typeof api; } }
if (typeof window !== 'undefined') {
  window.MetonaSqlark = api;
  window.MeSqlark = api;
}

export default api;
export {
  api,
  VERSION,
  create,
  MetonaSqlark,
};

// 别名
export const MeSqlark = MetonaSqlark;

// 类型导出
export type { DatabaseConfig, TableSchema, ColumnDef, FieldType, StorageMode, DiskEngine } from './constants';
export type { IStorageEngine } from './engine/interface';
export type { Statement, SelectStatement, InsertStatement, UpdateStatement, DeleteStatement } from './query/ast';
export { MemoryEngine } from './engine/memory';
export { IndexedDBEngine } from './engine/indexeddb';
export { OPFSEngine } from './engine/opfs';
export { AriaEngine } from './engine/aria/index';
export { HybridEngine } from './hybrid/index';
export { Table } from './table/table';
export { parse, parseAll } from './sql/parser';
export { tokenize } from './sql/lexer';

// AriaEngine 类型 & 后端
export type { AriaEngineConfig } from './engine/aria/types';
export { OPFSBackend } from './engine/aria/store/opfs_backend';