import { existsSync, readFileSync } from 'node:fs'
import { join } from 'node:path'

export default defineEventHandler((event) => {
  const projectId = param(event, 'projectId')
  const file = param(event, 'file')
  if (!/^[\w-]+\.png$/.test(file) || !/^[\w-]+$/.test(projectId)) throw createError({ statusCode: 400, message: '非法文件名' })
  const p = join(projectDir(projectId), 'avatars', file)
  if (!existsSync(p)) throw createError({ statusCode: 404, message: '头像不存在' })
  setHeader(event, 'Content-Type', 'image/png')
  setHeader(event, 'Cache-Control', 'public, max-age=86400')
  return readFileSync(p)
})