supabase/apps/docs/scripts/troubleshooting/watch.mjs

// @ts-check

import chokidar from 'chokidar'
import { closeSync, openSync, readFileSync, writeSync } from 'node:fs'
import { basename, join } from 'node:path'

const TROUBLESHOOTING_DIRECTORY = join(import.meta.dirname, '../../content/troubleshooting')

let __template = ''

function getTemplate() {
  if (!__template) {
    __template = readFileSync(join(TROUBLESHOOTING_DIRECTORY, '_template.mdx'), 'utf8')
  }
  return __template
}

const watcher = chokidar
  .watch(TROUBLESHOOTING_DIRECTORY, { ignoreInitial: true })
  .on('add', (path, stats) => {
    if (!stats?.isFile() || basename(path).startsWith('_')) return

    console.log(`File ${path} has been added.`)

    if (stats?.size !== 0) {
      console.log(`File ${path} already has content. Skipping template writing.`)
      return
    }

    try {
      console.log(`Writing template to ${path}...`)
      const fd = openSync(path, 'w')
      writeSync(fd, getTemplate())
      closeSync(fd)
    } catch (err) {
      console.error(`Error writing template to ${path}:`, err)
    }
  })

// Keep the process alive
const interval = setInterval(() => {}, 1000)

const shutdown = () => {
  console.log(`\nShutting down watcher...`)
  clearInterval(interval)
  watcher
    .close()
    .then(() => {
      console.log('Watcher closed. Exiting process.')
      process.exit(0)
    })
    .catch((err) => {
      console.error('Error closing watcher:', err)
      process.exit(1)
    })
}

process.on('SIGINT', shutdown)
process.on('SIGTERM', shutdown)
process.on('SIGHUP', shutdown)
process.on('SIGQUIT', shutdown)