Feature/add users api (#77)

* initial changes for jwt auth

* return permissions as an array of string

* Add JWT expiration environment variable (#74)

* allow fromHost in createCall REST API

* add JWT_EXPIRES_IN=<mins> env variable, 60 mins by default

* add jwt expiration in register.js and signin.js

* fix tests - add permissions and scope to encoded obj in jwt

Co-authored-by: Dave Horton <daveh@beachdognet.com>
Co-authored-by: eglehelms <e.helms@cognigy.com>

* return only the jwt-token in the api response

* update swagger.yaml

* add /users api

* apply review comments

* add users test case

* added User model

* bugfix: admin user should be able to create a carrier for a service provider

Co-authored-by: EgleH <egle.helms@gmail.com>
Co-authored-by: eglehelms <e.helms@cognigy.com>

lib/models/user.js

@@ -0,0 +1,85 @@
+const Model = require('./model');
+const {promisePool} = require('../db');
+const sqlAccount = 'SELECT * FROM users WHERE account_sid = ?';
+const sqlSP = 'SELECT * FROM users WHERE service_provider_sid = ?';
+
+class User extends Model {
+  constructor() {
+    super();
+  }
+
+  static async retrieveAllForAccount(account_sid) {
+    const [rows] = await promisePool.query(sqlAccount, [account_sid]);
+    return rows;
+  }
+
+  static async retrieveAllForServiceProvider(service_provider_sid) {
+    const [rows] = await promisePool.query(sqlSP, [service_provider_sid]);
+    return rows;
+  }
+}
+
+User.table = 'users';
+User.fields = [
+  {
+    name: 'user_sid',
+    type: 'string',
+    primaryKey: true
+  },
+  {
+    name: 'name',
+    type: 'string',
+    required: true
+  },
+  {
+    name: 'email',
+    type: 'string',
+    required: true
+  },
+  {
+    name: 'pending_email',
+    type: 'string'
+  },
+  {
+    name: 'phone',
+    type: 'string'
+  },
+  {
+    name: 'hashed_password',
+    type: 'string'
+  },
+  {
+    name: 'account_sid',
+    type: 'string'
+  },
+  {
+    name: 'service_provider_sid',
+    type: 'string'
+  },
+  {
+    name: 'force_change',
+    type: 'number'
+  },
+  {
+    name: 'provider',
+    type: 'string'
+  },
+  {
+    name: 'provider_userid',
+    type: 'string'
+  },
+  {
+    name: 'email_activation_code',
+    type: 'string'
+  },
+  {
+    name: 'email_validated',
+    type: 'number'
+  },
+  {
+    name: 'is_active',
+    type: 'number'
+  },
+];
+
+module.exports = User;