[Authenticate] Facebook Login using passport

@@ -80,13 +80,30 @@ export const postGithubLogin = (req, res) => {
 
 export const facebookLogin = passport.authenticate("facebook");
 
-export const facebookLoginCallback = (
-  accessToken,
-  refreshToken,
-  profile,
-  cb
-) => {
-  console.log(accessToken, refreshToken, profile, cb);
+// http://www.passportjs.org/packages/passport-facebook/ 참고하였습니다.
+export const facebookLoginCallback = async (_, __, profile, cb) => {
+  const {
+    _json: { id, name, email },
+  } = profile;
+  try {
+    const user = await User.findOne({ email });
+    if (user) {
+      user.facebookId = id;
+      user.avatarUrl = `https://graph.facebook.com/${id}/picture?type=large`;
+      user.save();
+      return cb(null, user);
+    }
+    const newUser = await User.create({
+      email,
+      name,
+      facebookId: id,
+      avatarUrl: `https://graph.facebook.com/${id}/picture?type=large`,
+    });
+    return cb(null, newUser);
+  } catch (error) {
+    return cb(error, null);
+  }
+  // console.log(accessToken, refreshToken, profile, cb);
 };
 
 export const postFacebookLogin = (req, res) => {

@@ -6,7 +6,8 @@
   "scripts": {
     "dev:server": "nodemon --exec babel-node init.js --delay 2 --ignore 'scss'",
     "dev:assets": "WEBPACK_ENV=development webpack -w",
-    "build:assets": "WEBPACK_ENV=production webpack"
+    "build:assets": "WEBPACK_ENV=production webpack",
+    "tunnel": "ngrok http 80"
   },
   "repository": {
     "type": "git",
@@ -33,6 +34,7 @@
     "mongoose": "^5.9.15",
     "morgan": "^1.10.0",
     "multer": "^1.4.2",
+    "ngrok": "^3.2.7",
     "node-sass": "^4.14.1",
     "passport": "^0.4.1",
     "passport-facebook": "^3.0.0",

@@ -30,7 +30,9 @@ passport.use(
     {
       clientID: process.env.FB_ID,
       clientSecret: process.env.FB_SECRET,
-      callbackURL: `http://localhost:80${routes.facebookCallback}`,
+      callbackURL: `https://77aa7153bcce.ngrok.io${routes.facebookCallback}`,
+      profileFields: ["id", "displayName", "photos", "email"],
+      scope: ["public_profile", "email"],
     },
     facebookLoginCallback
   )