import { desc, asc, eq, like, or, sql } from 'drizzle-orm'
import { useDB, schema } from '../../utils/db.js'
import { requireAdmin } from '../../utils/auth.js'
import { parsePagination } from '../../utils/pagination.js'

export default defineEventHandler(async (event) => {
  requireAdmin(event)

  const db = useDB()
  const query = getQuery(event)
  const { page, limit, offset, search } = parsePagination(event)
  const type = query.type || 'news'

  // 基础条件
  const conditions = [eq(schema.articles.type, type)]

  // 搜索
  if (search) {
    conditions.push(
      or(
        like(schema.articles.title, `%${search}%`),
        like(schema.articles.summary, `%${search}%`),
        like(schema.articles.category, `%${search}%`)
      )
    )
  }

  // 总数
  const [{ count: total }] = db
    .select({ count: sql`count(*)` })
    .from(schema.articles)
    .where(sql`${conditions.reduce((a, b) => sql`${a} AND ${b}`)}`)
    .all()

  // 分页数据
  const items = db
    .select()
    .from(schema.articles)
    .where(sql`${conditions.reduce((a, b) => sql`${a} AND ${b}`)}`)
    .orderBy(desc(schema.articles.id))
    .limit(limit)
    .offset(offset)
    .all()

  return {
    items,
    total,
    page,
    limit,
    totalPages: Math.ceil(total / limit),
  }
})