const { paginateQuery } = require('./utils/pagination');
const mongoose = require('mongoose');
const Post = require('./models/Post');

// 连接数据库
mongoose.connect('mongodb://127.0.0.1:27017/blog', {
  useNewUrlParser: true,
  useUnifiedTopology: true
})
.then(() => {
  console.log('数据库连接成功');
  testPagination();
})
.catch(err => {
  console.error('数据库连接失败:', err);
  process.exit(1);
});

async function testPagination() {
  try {
    console.log('开始测试分页功能...\n');
    
    // 测试分页查询
    const page = 1;
    const limit = 5;
    
    console.log(`测试参数: 页码=${page}, 每页数量=${limit}`);
    
    const result = await paginateQuery(
      Post,
      {},
      { sort: { createdAt: -1 } },
      page,
      limit
    );
    
    console.log('分页结果:');
    console.log('- 当前页:', result.pagination.currentPage);
    console.log('- 总页数:', result.pagination.totalPages);
    console.log('- 总记录数:', result.pagination.total);
    console.log('- 当前页记录数:', result.data.length);
    console.log('- 是否有下一页:', result.pagination.hasNext);
    console.log('- 是否有上一页:', result.pagination.hasPrev);
    
    console.log('\n文章列表:');
    result.data.forEach((post, index) => {
      console.log(`${index + 1}. ${post.title} (${post.author})`);
    });
    
    mongoose.connection.close();
  } catch (error) {
    console.error('测试失败:', error);
    mongoose.connection.close();
  }
}