import { Router } from 'express'
import { prisma } from '../db.js'
import { authRequired } from '../middleware.js'

const router = Router()
router.use(authRequired)

// 新闻列表: 按时间最新优先, cursor 分页 (cursor = publishedAt ISO 字符串)
// 用 prisma cursor 配合 id 兜底 (同一秒发布的新闻)
router.get('/news', async (req, res, next) => {
  try {
    const limit = Math.min(Number(req.query.limit) || 10, 50)
    const cursor = req.query.cursor || null
    const where = cursor ? { publishedAt: { lt: new Date(cursor) } } : {}
    const items = await prisma.news.findMany({
      where,
      orderBy: [{ publishedAt: 'desc' }, { id: 'desc' }],
      take: limit,
    })
    const nextCursor = items.length === limit ? items[items.length - 1].publishedAt.toISOString() : null
    res.json({ items, nextCursor })
  } catch (e) { next(e) }
})

export default router