feautre(FacebookSocialLogin):

Enable Social Login using facebook

[Delivers #167574878]

.env.sample

@@ -4,3 +4,7 @@ DB_URL_PRODUCTION=postgres://authors:haven@localhost:2800/haven
 NODE_ENV=development
 BASE_URL=/api/v5
 JWT_KEY=passkey
+REDIRECT_URL=http://localhost:5000/api/v1/auth/facebook/callback
+FACEBOOK_APP_ID=4342d2e47a9265845478yuy343y
+FACEBOOK_APP_SECRET=5y4384y545510
+SECRET_SESSION=secret-cat

package.json

@@ -32,6 +32,8 @@
     "express": "^4.17.1",
     "jsonwebtoken": "^8.5.1",
     "morgan": "^1.9.1",
+    "passport": "^0.4.0",
+    "passport-facebook": "^3.0.0",
     "pg": "^7.11.0",
     "pg-hstore": "^2.3.3",
     "sequelize": "^5.10.2",
@@ -60,6 +62,7 @@
     "lint-staged": "^9.2.1",
     "mocha": "^6.1.4",
     "mocha-lcov-reporter": "^1.3.0",
+    "nock": "^10.0.6",
     "nodemon": "^1.19.1",
     "nyc": "^14.1.1",
     "prettier-eslint-cli": "^5.0.0",

server/controllers/Auth.js

@@ -0,0 +1,41 @@
+import {
+  getUserAgent,
+  createSocialUser,
+  serverResponse,
+  getSocialUserData
+} from '../helpers';
+/**
+ * @export
+ * @class Auth
+ */
+class Auth {
+  /**
+   * @name SocialLogin
+   * @async
+   * @static
+   * @memberof Auth
+   * @param {Object} request express request object
+   * @param {Object} response express response object
+   * @returns {JSON} JSON object with details of new user
+   */
+  static async SocialLogin(request, response) {
+    const { devicePlatform, userAgent } = getUserAgent(request);
+    const { ip } = request;
+    const { givenName, familyName, email } = getSocialUserData(
+      request,
+      'facebook'
+    );
+    const data = {
+      firstName: givenName,
+      lastName: familyName,
+      email,
+      devicePlatform,
+      userAgent,
+      ipAddress: ip
+    };
+    const Data = await createSocialUser(data);
+    delete Data.password;
+    serverResponse(response, 200, Data);
+  }
+}
+export default Auth;

server/docs/authors-haven-api.yml

@@ -97,7 +97,30 @@ paths:
             application/json:
               schema:
                 "$ref": "#/components/schemas/serverResponse"
-
+  /api/v1/auth/facebook:
+    get:
+      summary: Route for signing new using facebook
+      description: Allow new user to Login using facebook
+      responses:
+        302:
+          description: redirect url
+  /api/v1/auth/facebook/callback:
+    get:
+      summary: redirect url for facebook login/signup
+      description: Allow existing users to signup or login
+      responses:
+        200:
+          description: Login successful
+          content:
+            application/json:
+              schema:
+                "$ref": "#/components/FacebookUserSignUp"
+        400:
+          description: Bad request
+          content:
+            application/json:
+              schema:
+                "$ref": "#/components/schemas/fbserverResponse"
 components:
   securitySchemes:
     BearerAuth:
@@ -130,6 +153,40 @@ components:
       confirmPassword:
         type: string
         example: incorrect
+  FacebookUserSignUp:
+    type: object
+    required:
+    - firstName
+    - lastName
+    - userName
+    - email
+    - password
+    - token
+    properties:
+      id:
+        type: string
+        example: 1
+      firstName:
+        type: string
+        example: Adekay
+      lastName:
+        type: string
+        example: Ade
+      userName:
+        type: string
+        example: korey
+      email:
+        type: string
+        example: riri.adeyemo@andela.com
+      password:
+        type: string
+        example: incorrect
+      confirmPassword:
+        type: string
+        example: incorrect
+      token:
+        type: string
+        example: bhddmdmddddddddddddmddnddb
   schemas:
     loginResponse:
       type: object
@@ -148,3 +205,8 @@ components:
       properties:
         error:
           type: string
+    fbserverResponse:
+      type: object
+      properties:
+        message:
+          type: string

server/helpers/createSocialUsers.js

@@ -0,0 +1,45 @@
+import models from '../database/models';
+import generateToken from './generateToken';
+import dateHelper from './dateHelper';
+
+const { User, Session } = models;
+const { expiryDate } = dateHelper;
+/**
+ * @name createSocialUser
+ * @description function that creates a new user in via socialLogin
+ * @param { Object }  data to check in the database
+ * @returns { Object } value indicating if username exists
+ */
+const createSocialUser = async (data) => {
+  const {
+    firstName,
+    lastName,
+    email,
+    ipAddress,
+    userAgent,
+    devicePlatform
+  } = data;
+  const expiresAt = expiryDate(devicePlatform);
+  const users = await User.findOrCreate({
+    where: { email },
+    defaults: {
+      firstName,
+      lastName,
+      email
+    }
+  });
+  const result = { ...users[0].dataValues };
+  const { id } = result;
+  const token = generateToken(id);
+  await Session.create({
+    userId: id,
+    token,
+    expiresAt,
+    userAgent,
+    ipAddress,
+    devicePlatform
+  });
+  result.token = token;
+  return result;
+};
+export default createSocialUser;

server/helpers/facebook.js

@@ -0,0 +1,17 @@
+import passport from 'passport';
+import { Strategy as FacebookStrategy } from 'passport-facebook';
+import callback from '../middlewares/passportCallback';
+
+export default () => {
+  passport.use(
+    new FacebookStrategy(
+      {
+        clientID: process.env.FACEBOOK_APP_ID,
+        clientSecret: process.env.FACEBOOK_APP_SECRET,
+        callbackURL: process.env.REDIRECT_URL,
+        profileFields: ['id', 'first_name', 'last_name', 'photos', 'email']
+      },
+      callback
+    )
+  );
+};