import { getFile } from '../files.js'
import { NotFoundError } from '../errors.js'
import createError from 'http-errors'

export default async function serveFilePlugin (fastify, options) {
  fastify.get('*', async (req, reply) => {
    try {
      const version = reply.version
      const url = req.urlData('path').substr(process.env.APP_ROOT.length - 1)

      const path = url === '/' ? '/index.html' : url
      const { body, headers } = await getFile({ version, path })

      Object.entries(headers).forEach(([key, value]) => {
        reply.header(key, value)
      })
      reply.send(body)
    } catch (err) {
      const errors = err.errors || [err]
      const fileNotFound = errors.reduce((memo, error) => memo && error instanceof NotFoundError, true)
      if (fileNotFound) throw createError(404, `File "${req.urlData('path')}" does not exist.`)
      throw err
    }
  })
}