'use strict'

const _ = require('lodash')
const remapper = require('../util/remap')
const handlers = require('../handlers/source-maps')

const { SourceMapConsumer } = require('source-map')

function create (req, res) {
  const sourceMap = _.mapKeys(req.body, (val, key) => _.camelCase(key))

  if (!sourceMap.content && req.file) {
    sourceMap.content = req.file.buffer.toString('utf8')
  }

  console.log(sourceMap)

  handlers.create(sourceMap).then(() => {
    res.render('index')
  })
}

function getOne (req, res, next) {
  next()
}

function listAll (req, res, next) {
  handlers.listAll().then((sourceMaps) => {
    res.locals.sourceMaps = sourceMaps

    res.json(sourceMaps)
  }).catch(next)
}

function remap (req, res, next) {
  const body = _.mapKeys(req.body, (val, key) => _.camelCase(key))

  const promise = body.content ? Promise.resolve(body) : handlers.get(body)

  promise
    .then((sourceMap) => new SourceMapConsumer(sourceMap.content))
    .then((consumer) => {
      const remapped = remapper(body.stack, consumer)

      consumer.destroy()

      if (req.accepts([ 'json', 'html' ]) === 'json') {
        res.json(remapped)
      } else {
        res.locals.stack = remapped
        res.render('remap-result')
      }
    })
    .catch(next)
}

module.exports = {
  remap,
  create,
  getOne,
  listAll,
}