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Felix

•Created by Felix on 2/10/2025 in #❓・help

Nitro useStorage use Brotli encoded json data

I have a Nuxt server route that should deliver a 400kb Brotli encoded JSON object. The json file is delivered over a custom server api route, because I need to set some custom headers for cache management with etags and set the correct content-type header. How do I read the file correctly and make it fetchable by the user? This is my current code:

export default defineEventHandler(async (event) => {
  const metadata = await useStorage<{ hash: string }>('assets:server').getItem(`character-parts-metadata.json`)
  if (!metadata)
    return new Response('Failed to get metadata', { status: 500 })

  const ifNoneMatch = getRequestHeader(event, 'if-none-match')
  if (ifNoneMatch === metadata.hash) {
    setResponseStatus(event, 304)
    return null
  }

  const characterParts = await useStorage<string>('assets:server').getItem(`character-parts.json.br`)
  if (!characterParts)
    return new Response('Failed to get character parts', { status: 500 })

  setHeaders(event, {
    'Content-Type': 'application/json',
    'Content-Encoding': 'br',
    'ETag': metadata.hash,
    'Cache-Control': 'no-cache',
  })

  return characterParts
})

export default defineEventHandler(async (event) => {
  const metadata = await useStorage<{ hash: string }>('assets:server').getItem(`character-parts-metadata.json`)
  if (!metadata)
    return new Response('Failed to get metadata', { status: 500 })

  const ifNoneMatch = getRequestHeader(event, 'if-none-match')
  if (ifNoneMatch === metadata.hash) {
    setResponseStatus(event, 304)
    return null
  }

  const characterParts = await useStorage<string>('assets:server').getItem(`character-parts.json.br`)
  if (!characterParts)
    return new Response('Failed to get character parts', { status: 500 })

  setHeaders(event, {
    'Content-Type': 'application/json',
    'Content-Encoding': 'br',
    'ETag': metadata.hash,
    'Cache-Control': 'no-cache',
  })

  return characterParts
})

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