/**
 * AriaEngine 边缘场景扩展测试
 * 全部 MemoryBackend，零卡死
 */
import { AriaEngine } from '../../src/engine/aria/index';
import { createSchema } from '../../src/table/schema';

import { resetOPFSMock } from '../helpers/storage-harness';

beforeEach(() => { resetOPFSMock(); });

describe('AriaEngine — 扩展边缘测试', () => {
  let engine: AriaEngine;

  beforeEach(async () => {
    engine = new AriaEngine({ storageBackend: 'memory' });
    await engine.open('edge-ext-test', 1);
  });

  afterEach(async () => { await engine.close(); });

  describe('复杂查询', () => {
    beforeEach(async () => {
      await engine.createTable(createSchema('users', {
        id: { type: 'string', primaryKey: true },
        name: { type: 'string', required: true },
        age: { type: 'number', default: 0 },
        active: { type: 'boolean', default: true },
        score: { type: 'number', default: 0 },
      }));
      await engine.insert('users', [
        { id: '1', name: 'Alice', age: 30, active: true, score: 85 },
        { id: '2', name: 'Bob', age: 25, active: true, score: 92 },
        { id: '3', name: 'Charlie', age: 35, active: false, score: 78 },
        { id: '4', name: 'Diana', age: 30, active: true, score: 95 },
        { id: '5', name: 'Eve', age: 25, active: true, score: 88 },
      ]);
    });

    it('$and 多条件', async () => {
      const rows = await engine.find('users', { table: 'users', where: { $and: [{ age: 30 }, { active: true }] } });
      expect(rows).toHaveLength(2);
    });

    it('$or 多条件', async () => {
      const rows = await engine.find('users', { table: 'users', where: { $or: [{ name: 'Alice' }, { name: 'Charlie' }] } });
      expect(rows).toHaveLength(2);
    });

    it('$not 条件', async () => {
      const rows = await engine.find('users', { table: 'users', where: { age: { $not: { $eq: 30 } } } });
      expect(rows).toHaveLength(3);
    });

    it('$ne 不等于', async () => {
      const rows = await engine.find('users', { table: 'users', where: { age: { $ne: 25 } } });
      expect(rows).toHaveLength(3);
    });

    it('$nin 不在列表中', async () => {
      const rows = await engine.find('users', { table: 'users', where: { age: { $nin: [25, 35] } } });
      expect(rows).toHaveLength(2);
    });

    it('$like 模糊匹配', async () => {
      const rows = await engine.find('users', { table: 'users', where: { name: { $like: 'A%' } } });
      expect(rows).toHaveLength(1);
      expect(rows[0].name).toBe('Alice');
    });

    it('多列 ORDER BY', async () => {
      const rows = await engine.find('users', { table: 'users', orderBy: [{ column: 'age', direction: 'asc' }, { column: 'score', direction: 'desc' }] }) as Array<{ age: number }>;
      expect(rows[0].age).toBeLessThanOrEqual(rows[4].age);
    });

    it('LIMIT + OFFSET 翻页', async () => {
      const page1 = await engine.find('users', { table: 'users', orderBy: [{ column: 'id', direction: 'asc' }], limit: 2, offset: 0 });
      const page2 = await engine.find('users', { table: 'users', orderBy: [{ column: 'id', direction: 'asc' }], limit: 2, offset: 2 });
      expect(page1).toHaveLength(2);
      expect(page2).toHaveLength(2);
      expect(page1[0].id).not.toBe(page2[0].id);
    });

    it('列投影', async () => {
      const rows = await engine.find('users', { table: 'users', columns: ['id', 'name'], where: { id: '1' } });
      expect(Object.keys(rows[0]).sort()).toEqual(['id', 'name']);
    });

    it('空结果查询', async () => {
      const rows = await engine.find('users', { table: 'users', where: { age: { $gt: 999 } } });
      expect(rows).toHaveLength(0);
    });
  });

  describe('边界与错误', () => {
    it('未打开引擎操作抛异常', () => {
      const e = new AriaEngine({ storageBackend: 'memory' });
      return expect(e.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }))).rejects.toThrow('not opened');
    });

    it('close 后操作抛异常', async () => {
      await engine.close();
      await expect(engine.find('users', { table: 'users' })).rejects.toThrow('not opened');
    });

    it('重复 open 幂等', async () => {
      await engine.open('edge-ext-test', 1);
      expect(engine.isOpen()).toBe(true);
    });

    it('创建已存在的表抛异常', async () => {
      await engine.createTable(createSchema('dup', { id: { type: 'string', primaryKey: true } }));
      await expect(engine.createTable(createSchema('dup', { id: { type: 'string', primaryKey: true } }))).rejects.toThrow('already exists');
    });

    it('获取不存在的表 schema 返回 null', async () => {
      expect(await engine.getTableSchema('ghost')).toBeNull();
    });

    it('hasTable 不存在的表返回 false', async () => {
      expect(await engine.hasTable('nope')).toBe(false);
    });

    it('dropTable 不存在的表抛异常', async () => {
      await expect(engine.dropTable('nope')).rejects.toThrow('does not exist');
    });

    it('insert 不存在的表抛异常', async () => {
      await expect(engine.insert('ghost', [{ id: '1' }])).rejects.toThrow('does not exist');
    });

    it('update 不存在的表抛异常', async () => {
      await expect(engine.update('ghost', { table: 'ghost' }, {})).rejects.toThrow('does not exist');
    });

    it('delete 不存在的表抛异常', async () => {
      await expect(engine.delete('ghost', { table: 'ghost' })).rejects.toThrow('does not exist');
    });

    it('count 不存在的表抛异常', async () => {
      await expect(engine.count('ghost')).rejects.toThrow('does not exist');
    });

    it('空表 count 返回 0', async () => {
      await engine.createTable(createSchema('empty', { id: { type: 'string', primaryKey: true } }));
      expect(await engine.count('empty')).toBe(0);
    });

    it('空表 find 返回空数组', async () => {
      await engine.createTable(createSchema('empty2', { id: { type: 'string', primaryKey: true } }));
      expect(await engine.find('empty2', { table: 'empty2' })).toHaveLength(0);
    });

    it('clear 空表不报错', async () => {
      await engine.createTable(createSchema('empty3', { id: { type: 'string', primaryKey: true } }));
      await engine.clear('empty3');
    });
  });

  describe('类型系统', () => {
    beforeEach(async () => {
      await engine.createTable(createSchema('types', {
        id: { type: 'string', primaryKey: true },
        name: { type: 'string', maxLength: 10 },
        age: { type: 'number', min: 0, max: 150 },
        active: { type: 'boolean' },
        created: { type: 'date' },
        meta: { type: 'json' },
      }));
    });

    it('string maxLength 约束', async () => {
      await expect(engine.insert('types', [{ id: '1', name: 'verylongnamehere' }])).rejects.toThrow('exceeds max length');
    });

    it('number min 约束', async () => {
      await expect(engine.insert('types', [{ id: '1', name: 'ok', age: -1 }])).rejects.toThrow('below minimum');
    });

    it('number max 约束', async () => {
      await expect(engine.insert('types', [{ id: '1', name: 'ok', age: 200 }])).rejects.toThrow('above maximum');
    });

    it('正确值通过所有约束', async () => {
      await engine.insert('types', [{ id: '1', name: 'Alice', age: 30, active: true, created: '2024-01-01', meta: { x: 1 } }]);
      expect(await engine.count('types')).toBe(1);
    });
  });

  describe('大量数据', () => {
    it('200 行批量插入查询', async () => {
      await engine.createTable(createSchema('big', { id: { type: 'string', primaryKey: true }, val: { type: 'number' } }));
      const rows = [];
      for (let i = 0; i < 200; i++) rows.push({ id: `${i}`, val: i });
      await engine.insert('big', rows);
      expect(await engine.count('big')).toBe(200);
      const result = await engine.find('big', { table: 'big', orderBy: [{ column: 'val', direction: 'asc' }], limit: 10 });
      expect(result).toHaveLength(10);
      expect(result[0].val).toBe(0);
    });

    it('200 行全量更新', async () => {
      await engine.createTable(createSchema('big2', { id: { type: 'string', primaryKey: true }, val: { type: 'number' } }));
      for (let i = 0; i < 200; i++) await engine.insert('big2', [{ id: `${i}`, val: i }]);
      await engine.update('big2', { table: 'big2' }, { val: 999 });
      const rows = await engine.find('big2', { table: 'big2', limit: 5 });
      expect(rows[0].val).toBe(999);
    });
  });
});