Added the device_tokens endpoint

app/assets/javascripts/application.js.coffee

@@ -2,6 +2,7 @@
 #= require datepicker
 #= require give_time
 #= require tags
+#= require mobile_app_libs
 
 $(document).on 'click', 'a[data-popup]', (event) ->
   window.open($(this).attr('href'), 'popup', 'width=600,height=600')

app/assets/javascripts/mobile_app_libs.js

@@ -0,0 +1,5 @@
+// Used by the mobile app to register the device token
+// https://github.com/coopdevs/timeoverflow-mobile-app
+window.TimeOverflowRegisterExpoDeviceToken = function (token) {
+  $.post('/device_tokens', { token: token });
+}

app/controllers/device_tokens_controller.rb

@@ -0,0 +1,19 @@
+class DeviceTokensController < ApplicationController
+  before_filter :authenticate_user!
+
+  def create
+    @device_token = DeviceToken.new device_token_params.merge! user_id: current_user.id
+
+    if @device_token.save
+      render nothing: true, status: :created
+    else
+      render nothing: true, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def device_token_params
+    params.permit(:token)
+  end
+end

app/models/device_token.rb

@@ -0,0 +1,7 @@
+class DeviceToken < ActiveRecord::Base
+  belongs_to :user
+
+  validates :user_id, presence: true
+  validates :token, presence: true
+  validates :token, uniqueness: { scope: :user_id }
+end

app/models/push_notifications/post_notification.rb

@@ -0,0 +1,11 @@
+module PushNotifications
+  class PostNotification
+    def title
+      "Notification title"
+    end
+
+    def body 
+      "Notification body"
+    end
+  end
+end

app/models/user.rb

@@ -22,6 +22,7 @@ class User < ActiveRecord::Base
   has_many :posts
   has_many :offers
   has_many :inquiries
+  has_many :device_tokens
 
   accepts_nested_attributes_for :members
 

app/services/push_notifications/expo_sender_service.rb

@@ -0,0 +1,30 @@
+require 'net/http'
+
+module PushNotifications
+  class ExpoAdaptorService
+    def initialize(notification, user)
+      @notification = notification
+      @user = user
+    end
+
+    def run
+      user.device_tokens.each do |device_token|
+        # https://docs.expo.io/versions/latest/guides/push-notifications.html
+        uri = URI('https://exp.host/--/api/v2/push/send')
+        Net::HTTP.post_form(uri, post_data(device_token.token))
+      end
+    end
+
+    private
+
+    attr_reader :notification, :user
+
+    def post_data(token)
+      {
+        "to" => token,
+        "title" => notification.title,
+        "body" => notification.body
+      }
+    end
+  end
+end

app/services/push_notifications/post_broadcaster_service.rb

@@ -0,0 +1,19 @@
+module PushNotifications
+  class UsersBroadcasterService
+    def initialize(users)
+      @users = users
+    end
+
+    def broadcast
+      notification = PostNotification.new
+
+      users.each do |user|
+        ExpoSenderService.new(notification, user).run
+      end
+    end
+
+    private
+
+    attr_reader :users
+  end
+end

config/routes.rb

@@ -18,6 +18,7 @@
   end
 
   resources :inquiries
+  resources :device_tokens, only: :create
 
   concern :accountable do
     get :give_time, on: :member

db/migrate/20180221161343_create_device_tokens.rb

@@ -0,0 +1,11 @@
+class CreateDeviceTokens < ActiveRecord::Migration
+  def change
+    create_table :device_tokens do |t|
+      t.integer :user_id, :null => false
+      t.string :token, :null => false
+
+      t.timestamps
+    end
+    add_index :device_tokens, [:user_id, :token], unique: true
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150422162806) do
+ActiveRecord::Schema.define(version: 20180221161343) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -54,6 +54,15 @@
     t.hstore   "name_translations"
   end
 
+  create_table "device_tokens", force: :cascade do |t|
+    t.integer  "user_id",    null: false
+    t.string   "token",      null: false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "device_tokens", ["user_id", "token"], name: "index_device_tokens_on_user_id_and_token", unique: true, using: :btree
+
   create_table "documents", force: :cascade do |t|
     t.integer  "documentable_id"
     t.string   "documentable_type"

spec/controllers/device_tokens_controller_spec.rb

@@ -0,0 +1,34 @@
+require 'spec_helper'
+
+describe DeviceTokensController do
+  let (:organization) { Fabricate(:organization) }
+  let (:member) { Fabricate(:member, organization: organization) }
+
+  describe 'POST #create' do
+    context 'without login' do
+      it 'responds with error' do
+        expect do
+          post :create
+        end.to change(DeviceToken, :count).by(0)
+      end
+    end
+
+    context 'with valid params' do
+      it 'creates a new device_token' do
+        login(member.user)
+
+        expect do
+          post :create, token: 'xxx'
+        end.to change(DeviceToken, :count).by(1)
+      end
+    end
+
+    context 'with invalid params' do
+      it 'responds with error' do
+        login(member.user)
+        post :create
+        expect(response.status).to eq(422)
+      end
+    end
+  end
+end