import { eq } from 'drizzle-orm'
import { useDB, schema } from '../../../utils/db.js'
import { requireAdmin } from '../../../utils/auth.js'
import { resolveTagsWithFallback } from '../../../utils/article-helpers.js'

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

  const id = Number(getRouterParam(event, 'id'))
  const body = await readBody(event)

  const db = useDB()
  const updateData = { updatedAt: new Date().toISOString() }

  if (body.title !== undefined) updateData.title = body.title
  if (body.slug !== undefined) updateData.slug = body.slug
  if (body.summary !== undefined) updateData.summary = body.summary
  if (body.content !== undefined) updateData.content = body.content
  if (body.category !== undefined) updateData.category = body.category
  if (body.coverImage !== undefined) updateData.coverImage = body.coverImage
  if (body.author !== undefined) updateData.author = body.author
  if (body.seoTitle !== undefined) updateData.seoTitle = body.seoTitle
  if (body.seoDesc !== undefined) updateData.seoDesc = body.seoDesc
  if (body.seoKeywords !== undefined) updateData.seoKeywords = body.seoKeywords
  // tags：前端传了用前端的；没传/空数组时从 seoKeywords fallback（admin 编辑页暂无 tags 输入）
  if (body.tags !== undefined) {
    updateData.tags = JSON.stringify(resolveTagsWithFallback(body))
  } else if (body.seoKeywords !== undefined) {
    // 用户改了 seoKeywords 但没传 tags，同步更新 tags
    updateData.tags = JSON.stringify(resolveTagsWithFallback(body))
  }
  if (body.published !== undefined) updateData.published = body.published ? 1 : 0

  db.update(schema.articles)
    .set(updateData)
    .where(eq(schema.articles.id, id))
    .run()

  return { success: true }
})