import { count, eq, desc, sql, gte } from 'drizzle-orm'
import { useDB, schema } from '../../utils/db.js'
import { requireAdmin } from '../../utils/auth.js'

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

  const db = useDB()

  const [newsRow] = db.select({ c: count() }).from(schema.articles).where(eq(schema.articles.type, 'news')).all()
  const [blogRow] = db.select({ c: count() }).from(schema.articles).where(eq(schema.articles.type, 'blog')).all()
  const [reviewsRow] = db.select({ c: count() }).from(schema.reviews).all()
  const [faqsRow] = db.select({ c: count() }).from(schema.faqs).all()
  const [galleryRow] = db.select({ c: count() }).from(schema.galleryItems).all()
  const [storiesRow] = db.select({ c: count() }).from(schema.stories).all()
  const [subTotalRow] = db.select({ c: count() }).from(schema.submissions).all()
  const [subUnreadRow] = db.select({ c: count() }).from(schema.submissions).where(eq(schema.submissions.read, false)).all()
  const [siteContentRow] = db.select({ c: count() }).from(schema.siteContent).all()

  // 产品线数量（从 site_content 的 product-lines 键解析）
  let productLines = 0
  try {
    const pl = db.select().from(schema.siteContent).where(eq(schema.siteContent.key, 'product-lines')).all()
    if (pl[0]?.data) {
      const arr = JSON.parse(pl[0].data)
      if (Array.isArray(arr)) productLines = arr.length
    }
  } catch {}

  // 近 7 天真实提交（仅统计用户表单，文章/评价为后台手动录入不计入）
  const weekAgo = new Date(Date.now() - 7 * 24 * 60 * 60 * 1000).toISOString()
  const [recentSubRow] = db.select({ c: count() }).from(schema.submissions).where(gte(schema.submissions.createdAt, weekAgo)).all()
  const [recentContactRow] = db.select({ c: count() }).from(schema.submissions).where(sql`${schema.submissions.type} = 'contact' AND ${schema.submissions.createdAt} >= ${weekAgo}`).all()
  const [recentCustomizeRow] = db.select({ c: count() }).from(schema.submissions).where(sql`${schema.submissions.type} = 'customize' AND ${schema.submissions.createdAt} >= ${weekAgo}`).all()

  // 最近 5 条提交 / 最近 5 条评价
  const recentSubmissions = db.select({
    id: schema.submissions.id, type: schema.submissions.type,
    read: schema.submissions.read, createdAt: schema.submissions.createdAt,
  }).from(schema.submissions).orderBy(desc(schema.submissions.id)).limit(5).all()

  const recentReviews = db.select({
    id: schema.reviews.id, author: schema.reviews.author, rating: schema.reviews.rating,
    title: schema.reviews.title, createdAt: schema.reviews.createdAt,
  }).from(schema.reviews).orderBy(desc(schema.reviews.id)).limit(5).all()

  return {
    articles: {
      total: newsRow.c + blogRow.c,
      news: newsRow.c,
      blog: blogRow.c,
    },
    reviews: reviewsRow.c,
    faqs: faqsRow.c,
    gallery: galleryRow.c,
    stories: storiesRow.c,
    submissions: {
      total: subTotalRow.c,
      unread: subUnreadRow.c,
    },
    siteContent: siteContentRow.c,
    productLines,
    recent: {
      submissions7d: recentSubRow.c,
      contact7d: recentContactRow.c,
      customize7d: recentCustomizeRow.c,
    },
    recentSubmissions,
    recentReviews,
  }
})