tempnote.js

import { Hoa } from 'hoa'
import { tinyRouter } from '@hoajs/tiny-router'
import { cookie } from '@hoajs/cookie'

import tempnoteHtml from './tempnote.html'

const app = new Hoa()
app.extend(tinyRouter())
app.extend(cookie())

app.get('/:path', async (ctx) => {
  const path = ctx.req.params.path
  if (!/^[0-9a-zA-Z]+$/.test(path)) {
    ctx.res.status = 204
    return
  }

  const type = ctx.req.query.type
  const note = await ctx.env.KV.get(path) || ''

  ctx.res.set({
    'Cache-Control': 'no-store, no-cache, must-revalidate',
    Pragma: 'no-cache',
    Expires: '0'
  })

  if (type === 'text') {
    ctx.res.type = 'text'
    ctx.res.body = note
    return
  }

  const safeNote = note.replace(/<\/textarea>/gi, '<\\/textarea>')
  ctx.res.type = 'html'
  ctx.res.body = tempnoteHtml.replace(/\{\s*SAFE_NOTE\s*\}/, safeNote)
  await ctx.res.setCookie('last_path', path)
})

app.post('/:path', async (ctx) => {
  const path = ctx.req.params.path
  const text = (await ctx.req.text() || '').trim().slice(0, 65536)
  await ctx.env.KV.put(path, text, {
    expirationTtl: 86400 * 365
  })

  ctx.res.status = 200
})

app.use(async (ctx) => {
  const lastPath = await ctx.req.getCookie('last_path')
  ctx.res.redirect(lastPath || randomPath())
})

export default app

function randomPath (len = 6) {
  const chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
  let result = ''
  for (let i = 0; i < len; i++) {
    result += chars.charAt(Math.floor(Math.random() * chars.length))
  }
  return result
}