Push Notifications

api_mock.js

/* eslint-disable */

export default {
  user_profile: _mockasync(user_profile),
  update_token: _mockasync(update_token)
}

/**
 * Get the user profile from the backend
 * @param ask_for_permission: it IS NOT a good idea ask for ALLOW push notifications in the first time the user gets in the website.
 * perhaps after he browsers or watch the first video.
 * @param token: after the user gives permission (ALLOW), the firebase send a token which will be used to send message for the user device.
 */
function user_profile(user_id) {
  return {
    user_id: user_id,
    push_notification: {
      ask_for_permission: true,
      token: null
    }
  }
}


/**
 * If the user clear data or change the computer etc..he will receive a new token from the firebase messaging.
 * So we need to keep the backend updated
 * @param token: new token
 */
function update_token(user_profile, token) {
  user_profile.push_notification.token = token
  return user_profile
}

function _mockasync(f){
    function mocked(){
        var res = f.apply(this, arguments)
        return new Promise(function(resolve, reject){
            setTimeout(function(){
                resolve({data: res})
            }, 600);
        })
    }
    return mocked
}

firebase-messaging-sw.js

// /static/firebase-messaging-sw.js
importScripts('https://www.gstatic.com/firebasejs/3.5.2/firebase-app.js')
importScripts('https://www.gstatic.com/firebasejs/3.5.2/firebase-messaging.js')

var config = {
  apiKey: 'AIzaSyABRALdPhSmLH_NdwxQ27gcwG-_v9QacV4',
  authDomain: 'evolutiodev.firebaseapp.com',
  databaseURL: 'https://evolutiodev.firebaseio.com/',
  projectId: 'evolutiodev',
  storageBucket: 'evolutiodev.appspot.com',
  messagingSenderId: '646469414520'
}

firebase.initializeApp(config)

const messaging = firebase.messaging()

firebase.js

import firebase from 'firebase'

var config = {
  apiKey: 'AIzaSyABRALdPhSmLH_NdwxQ27gcwG-_v9QacV4',
  authDomain: 'evolutiodev.firebaseapp.com',
  databaseURL: 'https://evolutiodev.firebaseio.com/',
  projectId: 'evolutiodev',
  storageBucket: 'evolutiodev.appspot.com',
  messagingSenderId: '646469414520'
}

firebase.initializeApp(config)

export default {
  messaging: firebase.messaging()
}

HomeView.vue

<template>

  <div>

    <!-- componente que encapsula o PUSH NOTIFICATION -->
    <push-notification
        ref="pushNotification"
        :currentToken="userToken"
        @update-token="onUpdateToken"
        @new-message="onNewMessage" />

    <!-- snackbar que mostra as notifications -->
    <div id="snackbar-message" class="mdl-js-snackbar mdl-snackbar">
      <div class="mdl-snackbar__text"></div>
      <button class="mdl-snackbar__action" type="button"></button>
    </div>

    <div class="mdl-grid">
      <div class="mdl-cell mdl-cell--3-col mdl-cell mdl-cell--1-col-tablet mdl-cell--hide-phone"></div>
      <div class="mdl-cell mdl-cell--6-col mdl-cell--4-col-phone">

        <!-- mostra uma mensagem amigável para que o visitante que faça o usuário ter vontade de habilitar as 
             notificaçes -->
        <div v-show="askForPermission && !userToken" class="headline" style="background-color: #ff897d; padding: 20px; border-radius: 6px; color: #fff;">
          Hey, click here to start receiving our amazing push notifications!!!
          <button class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect"
              @click="enableNotifications">
            Enable notifications
          </button>
        </div>

      </div>
    </div>
  </div>
</template>

<script>
import PushNotification from '@/components/PushNotification'
import api from '@/api/api'

export default {
  components: {
    PushNotification
  },
  methods: {
    enableNotifications () {
      this.$refs.pushNotification.askForPermission()
    },
    onUpdateToken (newToken) {
      this.userToken = newToken
      // send token to the server
      api.update_token(this.userProfile, this.userToken)
    },
    onNewMessage (message) {
      var snackbarContainer = document.querySelector('#snackbar-message')
      var data = {
        message: message.notification.title + ': ' + message.notification.body,
        timeout: 10000,
        actionText: 'OK'
      }
      snackbarContainer.MaterialSnackbar.showSnackbar(data)
    }
  },
  created () {
    var userLoggedId = 1
    // check if user has a token
    api.user_profile(userLoggedId).then((response) => {
      this.userProfile = response.data
      this.userToken = this.userProfile.push_notification.ask_for_permission.token
      if (this.userProfile.push_notification.ask_for_permission) {
        setTimeout(() => {
          // Simulate it wont ask for permission in the first user access
          this.askForPermission = true
        }, 4000)
      }
    })
  },
  data () {
    return {
      userProfile: {},
      askForPermission: false,
      userToken: null
    }
  }
}
</script>

<style scoped>
</style>

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Push Notifications</title>
    <!-- ADD THIS -->
    <link rel="manifest" href="<%= htmlWebpackPlugin.files.publicPath %>static/manifest.json">
    ...
  </head>
  <body>
    ... the latest VueJs Template already has this service worker
    <%= htmlWebpackPlugin.options.serviceWorkerLoader %>

  </body>
</html>

main.js

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import VueResource from 'vue-resource'
import VueFire from 'vuefire'

Vue.config.productionTip = false

Vue.use(VueResource)
Vue.use(VueFire)

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  template: '<App/>',
  components: { App }
})

manifest.json

{
  "name": "cropchat",
  "short_name": "cropchat",
  "gcm_sender_id": "103953800507",
  "icons": [
    {
      "src": "/static/img/icons/cropchat-icon-64x64.png",
      "sizes": "192x192",
      "type": "image/png"
    },
    {
      "src": "/static/img/icons/cropchat-icon-128x128.png",
      "sizes": "128x128",
      "type": "image/png"
    },
    {
      "src": "/static/img/icons/cropchat-icon-256x256.png",
      "sizes": "256x256",
      "type": "image/png"
    },
    {
      "src": "/static/img/icons/cropchat-icon-512x512.png",
      "sizes": "512x512",
      "type": "image/png"
    }
  ],
  "start_url": "/",
  "display": "fullscreen",
  "orientation": "portrait",
  "background_color": "#2196f3",
  "theme_color": "#2196f3"
}

package.json

{
  "name": "pushnotification",
  "version": "1.0.0",
  "description": "A Vue.js project",
  "author": "Roger Camargo <huogerac@gmail.com>",
  "private": true,
  "scripts": {
    "dev": "node build/dev-server.js",
    "start": "node build/dev-server.js",
    "build": "node build/build.js",
    "unit": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run",
    "test": "npm run unit",
    "lint": "eslint --ext .js,.vue src test/unit/specs"
  },
  "dependencies": {
    "firebase": "^5.0.4",
    "material-design-lite": "^1.3.0",
    "vue": "^2.5.2",
    "vue-resource": "^1.5.1",
    "vue-router": "^3.0.1",
    "vuefire": "^1.4.5",
    "xml-parser": "^1.2.1"
  },
  "devDependencies": {
    "ngrok": "^3.0.1",
    "autoprefixer": "^7.1.5",
    "babel-core": "^6.26.0",
    "babel-eslint": "^8.0.1",
    "babel-loader": "^7.1.2",
    "babel-plugin-istanbul": "^4.1.5",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-preset-env": "^1.6.0",
    "babel-preset-stage-2": "^6.24.1",
    "babel-register": "^6.26.0",
    "chai": "^4.1.2",
    "chalk": "^2.1.0",
    "connect-history-api-fallback": "^1.4.0",
    "copy-webpack-plugin": "^4.1.1",
    "cross-env": "^5.0.5",
    "css-loader": "^0.28.7",
    "cssnano": "^3.10.0",
    "eslint": "^4.9.0",
    "eslint-config-standard": "^10.2.1",
    "eslint-friendly-formatter": "^3.0.0",
    "eslint-loader": "^1.9.0",
    "eslint-plugin-html": "^3.2.2",
    "eslint-plugin-import": "^2.7.0",
    "eslint-plugin-node": "^5.2.0",
    "eslint-plugin-promise": "^3.6.0",
    "eslint-plugin-standard": "^3.0.1",
    "eventsource-polyfill": "^0.9.6",
    "express": "^4.16.2",
    "extract-text-webpack-plugin": "^3.0.0",
    "file-loader": "^1.1.5",
    "friendly-errors-webpack-plugin": "^1.6.1",
    "html-webpack-plugin": "^2.30.1",
    "http-proxy-middleware": "^0.17.4",
    "inject-loader": "^3.0.1",
    "karma": "^1.7.1",
    "karma-coverage": "^1.1.1",
    "karma-mocha": "^1.3.0",
    "karma-phantomjs-launcher": "^1.0.4",
    "karma-phantomjs-shim": "^1.5.0",
    "karma-sinon-chai": "^1.3.2",
    "karma-sourcemap-loader": "^0.3.7",
    "karma-spec-reporter": "0.0.31",
    "karma-webpack": "^2.0.5",
    "mocha": "^4.0.1",
    "opn": "^5.1.0",
    "optimize-css-assets-webpack-plugin": "^3.2.0",
    "ora": "^1.3.0",
    "phantomjs-prebuilt": "^2.1.15",
    "rimraf": "^2.6.2",
    "semver": "^5.4.1",
    "shelljs": "^0.7.8",
    "sinon": "^4.0.1",
    "sinon-chai": "^2.14.0",
    "sw-precache-webpack-plugin": "^0.11.5",
    "uglify-es": "^3.1.3",
    "url-loader": "^0.6.2",
    "vue-loader": "^13.3.0",
    "vue-style-loader": "^3.0.3",
    "vue-template-compiler": "^2.5.2",
    "webpack": "^3.7.1",
    "webpack-bundle-analyzer": "^2.9.0",
    "webpack-dev-middleware": "^1.12.0",
    "webpack-hot-middleware": "^2.19.1",
    "webpack-merge": "^4.1.0"
  },
  "engines": {
    "node": ">= 4.0.0",
    "npm": ">= 3.0.0"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
}

PushNotification.vue

<template>
</template>

<script>
import firebase from '../service/firebase'

export default {
  props: ['currentToken'],
  data () {
    return {
      hasServiceWorker: false
    }
  },
  mounted () {
    this.initialize()
  },
  methods: {
    initialize () {
      if (!('serviceWorker' in navigator)) {
        console.warn('serviceWorker not working')
        return
      }

      if (!('PushManager' in window)) {
        console.warn('PushManager not working')
        return
      }
      this.hasServiceWorker = true
    },
    askForPermission () {
      if (!this.hasServiceWorker) {
        return
      }
      // console.firebase | project settins | cloud message | web config | Key pair
      firebase.messaging.usePublicVapidKey('BK8JSwxoV2WXvivBQ0deKPy9PVTRaYcYmuwGjJWGpgTAZ7-NM48H1ScVsO6EvMhP7O9jhSGp39XFtRQCPgfDAJI')
      navigator.serviceWorker.register('./static/firebase-messaging-sw.js')
        .then((registration) => {
          firebase.messaging.useServiceWorker(registration)

          firebase.messaging.requestPermission().then(() => {
            firebase.messaging.getToken().then((token) => {
              if (token !== this.currentToken) {
                this.$emit('update-token', token)
              }
            }).catch((err) => console.log('--- token error:', err))
          }).catch(function (err) {
            console.log('Unable to get permission to notify.', err)
          })
        }).catch(err => {
          console.log('error register', err)
        })

      firebase.messaging.onMessage((payload) => {
        this.$emit('new-message', payload)
      })
    }
  }
}
</script>