/**
 * AriaEngine 最终扩展测试 — 全部 MemoryBackend
 */
import { AriaEngine } from '../../src/engine/aria/index';
import { createSchema } from '../../src/table/schema';
import { MemoryBackend } from '../../src/engine/aria/store/backend';

import { installOPFSMock } from '../helpers/opfs-mock';

beforeEach(() => { installOPFSMock(new Map()); });

describe('AriaEngine — 批量扩展测试', () => {
  let engine: AriaEngine;
  beforeEach(async () => { engine = new AriaEngine({ storageBackend: 'memory' }); await engine.open('bat', 1); });
  afterEach(async () => { await engine.close(); });

  it('事务 commit', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, n: { type: 'string' } }));
    await engine.beginTransaction();
    await engine.insert('t', [{ id: '1', n: 'a' }, { id: '2', n: 'b' }]);
    await engine.commitTransaction();
    expect(await engine.count('t')).toBe(2);
  });
  it('事务 rollback', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, n: { type: 'string' } }));
    await engine.insert('t', [{ id: '1', n: 'a' }]);
    await engine.beginTransaction();
    await engine.insert('t', [{ id: '2', n: 'b' }]);
    await engine.rollbackTransaction();
    expect(await engine.count('t')).toBe(1);
  });
  it('insert 空数组', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    const pks = await engine.insert('t', []);
    expect(pks).toHaveLength(0);
  });
  it('update 无匹配', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, n: { type: 'string' } }));
    await engine.insert('t', [{ id: '1', n: 'a' }]);
    expect(await engine.update('t', { table: 't', where: { id: 'x' } }, { n: 'x' })).toBe(0);
  });
  it('delete 无匹配', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    await engine.insert('t', [{ id: '1' }]);
    expect(await engine.delete('t', { table: 't', where: { id: 'x' } })).toBe(0);
  });
  it('count 空表', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    expect(await engine.count('t')).toBe(0);
  });
  it('find 空表', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    expect(await engine.find('t', { table: 't' })).toHaveLength(0);
  });
  it('hasTable false', async () => { expect(await engine.hasTable('nope')).toBe(false); });
  it('dropTable 后 hasTable false', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    await engine.dropTable('t');
    expect(await engine.hasTable('t')).toBe(false);
  });
  it('清空表保留结构', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    await engine.insert('t', [{ id: '1' }, { id: '2' }]);
    await engine.clear('t');
    expect(await engine.count('t')).toBe(0);
    expect(await engine.hasTable('t')).toBe(true);
  });
  it('重复主键抛异常', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    await engine.insert('t', [{ id: '1' }]);
    await expect(engine.insert('t', [{ id: '1' }])).rejects.toThrow('Duplicate');
  });
  it('类型不匹配抛异常', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, age: { type: 'number' } }));
    await expect(engine.insert('t', [{ id: '1', age: 'x' as any }])).rejects.toThrow('expects number');
  });
  it('必填字段缺失抛异常', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, name: { type: 'string', required: true } }));
    await expect(engine.insert('t', [{ id: '1' }])).rejects.toThrow('required');
  });
  it('MemoryBackend isOpen', async () => {
    const be = new MemoryBackend();
    expect(be.isOpen()).toBe(false);
    await be.open('x'); expect(be.isOpen()).toBe(true);
    await be.close();
  });
  it('引擎名称为 aria', () => { expect(engine.name).toBe('aria'); });
  it('默认值 number', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, val: { type: 'number', default: 42 } }));
    await engine.insert('t', [{ id: '1' }]);
    expect((await engine.find('t', { table: 't' }))[0].val).toBe(42);
  });
  it('默认值 boolean', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, active: { type: 'boolean', default: true } }));
    await engine.insert('t', [{ id: '1' }]);
    expect((await engine.find('t', { table: 't' }))[0].active).toBe(true);
  });
  it('Schema json 往返', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, meta: { type: 'json' } }));
    await engine.insert('t', [{ id: '1', meta: { a: 1, b: [2, 3] } }]);
    expect((await engine.find('t', { table: 't' }))[0].meta).toEqual({ a: 1, b: [2, 3] });
  });
  it('date 类型存储', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, ts: { type: 'date' } }));
    await engine.insert('t', [{ id: '1', ts: '2026-01-01T00:00:00.000Z' }]);
    expect((await engine.find('t', { table: 't' }))[0].ts).toBe('2026-01-01T00:00:00.000Z');
  });
  it('重复 open 不改变状态', async () => { await engine.open('bat', 1); expect(engine.isOpen()).toBe(true); });
  it('GC 调用不抛异常', () => { (engine as any).tryGC(); });
  it('内存检查不抛异常', () => { (engine as any).checkMemoryBudget(); });
  it('引擎状态 getTableNames', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    expect(await engine.getTableNames()).toContain('t');
  });
  it('getTableSchema 返回正确结构', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, name: { type: 'string' } }));
    const s = await engine.getTableSchema('t');
    expect(s!.columns.id.primaryKey).toBe(true);
  });
  it('LIMIT 0 返回空', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
    await engine.insert('t', [{ id: '1' }, { id: '2' }]);
    expect(await engine.find('t', { table: 't', limit: 0 })).toHaveLength(0);
  });
  it('ORDER BY desc', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, v: { type: 'number' } }));
    await engine.insert('t', [{ id: 'a', v: 1 }, { id: 'b', v: 3 }, { id: 'c', v: 2 }]);
    const r = await engine.find('t', { table: 't', orderBy: [{ column: 'v', direction: 'desc' }] });
    expect(r[0].v).toBe(3); expect(r[2].v).toBe(1);
  });
  it('$eq 直接值', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, n: { type: 'string' } }));
    await engine.insert('t', [{ id: '1', n: 'Alice' }, { id: '2', n: 'Bob' }]);
    expect(await engine.find('t', { table: 't', where: { n: 'Alice' } })).toHaveLength(1);
  });
  it('$gte $lte 组合', async () => {
    await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true }, v: { type: 'number' } }));
    for (let i = 0; i < 10; i++) await engine.insert('t', [{ id: `${i}`, v: i * 10 }]);
    expect(await engine.count('t', { table: 't', where: { v: { $gte: 20, $lte: 50 } } })).toBe(4);
  });
});