import { writeFile } from 'node:fs/promises'
import { eq } from 'drizzle-orm'
import { z } from 'zod'

/** 手动编辑版本正文（直接改写文件） */
export default defineEventHandler(async (event) => {
  const v = getVersion(param(event))
  if (!v) throw createError({ statusCode: 404, message: '版本不存在' })
  if (v.status === 'writing') throw createError({ statusCode: 409, message: '该版本正在写作中，无法编辑' })
  const { content } = await readJson(event, z.object({ content: z.string() }))
  const chapter = getChapter(v.chapterId)
  await writeFile(absPath(v.filePath), `# 第${chapter.index}章 ${chapter.title}\n\n${content}`, 'utf8')
  useDb().update(tables.chapterVersions).set({ wordCount: countWords(content), status: 'done' }).where(eq(tables.chapterVersions.id, v.id)).run()
  emitProject(chapter.projectId, { type: 'chapter', chapterId: chapter.id })
  return { ok: true }
})