import { filter } from '../src/index.ts';

const users = [
  {
    metadata: {
      tags: ['premium', 'active'],
      type: 'user',
      region: 'beijing',
      created_at: '2024-03-15T10:00:00Z'
    }
  },
  {
    metadata: {
      tags: ['free'],
      type: 'admin',
      region: 'shanghai',
      created_at: '2024-01-10T09:00:00Z'
    }
  },
  {
    metadata: {
      tags: ['enterprise', 'premium'],
      type: 'user',
      region: 'guangzhou',
      created_at: '2024-04-05T12:00:00Z'
    }
  }
];

console.log('=== 方式1: users.filter(createFilter("...")) ===');

console.log('\n=== premium 用户 ===');
console.log(filter(users, "WHERE metadata.tags CONTAINS 'premium'"));

console.log('\n=== 北京用户 ===');
console.log(filter(users, "WHERE metadata.region = 'beijing'"));

console.log('\n=== user 类型用户 ===');
console.log(filter(users, "WHERE metadata.type = 'user'"));

console.log('\n=== premium 且 user 类型 ===');
console.log(filter(users, "WHERE metadata.tags CONTAINS 'premium' AND metadata.type = 'user'"));

console.log('\n=== 北京或上海用户 ===');
console.log(filter(users, "WHERE metadata.region IN ['beijing', 'shanghai']"));

console.log('\n=== 方式2: filter(users, "...") (支持 ORDER BY 和 LIMIT) ===');

console.log('\n=== 北京用户，按时间倒序 ===');
console.log(filter(users, "WHERE metadata.region = 'beijing' ORDER BY metadata.created_at DESC"));

console.log('\n=== 前2个用户，按时间倒序 ===');
const limitResult = filter(users, "ORDER BY metadata.created_at DESC LIMIT 2");
console.log('Limit result length:', limitResult.length);
console.log(limitResult);