barcode-frontend-backend-docker/docker-front/front/src/db.js

var PouchDB = require('pouchdb').default
var db = new PouchDB('myuser')

const get = function (id) {
  return db.get(id)
}

const save = function (data, id) {
  data.id = id
  return db.put(data)
}

const getWithDefault = function (id, _default) {
  return new Promise((resolve, reject) => {
    db.get(id)
      .then((data) => { resolve(data) })
      .catch((err) => {
        if (err.status === 404) {
          resolve(_default)
        }
        else {
          reject(err)
        }
      })
  })
}

// const get = function (id) {
//  return getWithDefault(id, {_id: id})
// }

const getLang = function () {
  return getWithDefault('lang', {_id: 'lang', lang: window.navigator.language.toUpperCase() })
}

const saveLang = function (lang) {
  return new Promise((resolve, reject) => {
    getLang()
      .then(data => {
        data.lang = lang
        db.put(data)
          .then(data => resolve(data))
          .catch(err => reject(err))
      })
      .catch(err => reject(err))
  })
}

const getToken = function () {
  return getWithDefault('token',{'_id': 'token', 'token': 'any'})
}

const saveToken = function (token) {
  return new Promise((resolve, reject) => {
    getWithDefault('token', {_id: 'token'})
      .then(data => {
        data.token = token
        db.put(data)
          .then(data => resolve(data))
          .catch(err => reject(err))
      })
      .catch(err => reject(err))
  })
}

// const save = function (id, data) { }
const getDataInternal = function (id) {
  return getWithDefault(id, {'_id': id})
}

const saveData = function (id, data) {
  return new Promise((resolve, reject) => {
    getDataInternal(id)
      .catch(err => { reject(err) })
      .then((result) => {
        result.data = data
        save(result, id)
          .then(() => resolve(result))
          .catch(err => reject(err))
      })
  })
}

const getData = function (id) {
  return new Promise((resolve, reject) => {
    getDataInternal(id)
      .then(data => { resolve(data.data) })
      .catch(err => { reject(err) })
  })
}
const getSelectedCameraIndex = function () {
  return getWithDefault('camera_index', {index: 0, _id: 'camera_index'})
}
const setSelectedCameraIndex = function (index) {
  return new Promise((resolve, reject) => {
    getSelectedCameraIndex()
      .then(data => {
        data.index = index
        db.put(data)
          .then(data => resolve(data))
          .catch(err => reject(err))
      })
      .catch(err => reject(err))
  })
}

export {
  saveToken,
  getToken,
  getLang,
  saveLang,
  db,
  save,
  get,
  getData,
  saveData,
  getWithDefault,
  setSelectedCameraIndex,
  getSelectedCameraIndex
}