Done

Egbedokun_Olayinka/.gitignore

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+/node_modules

Egbedokun_Olayinka/config/config.env

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+PORT=5000
+MONGO_URI=mongodb+srv://Olayinka:Frankenstein@cluster0.7seiw.mongodb.net/PassportAuth?retryWrites=true&w=majority
+GOOGLE_CLIENT_ID=269941557985-n1rsuff80a5nbvs9jobc7jgaj7968855.apps.googleusercontent.com
+GOOGLE_CLIENT_SECRET=AAnHSJ6WCM2CVSAQyxmVLg9P
+FACEBOOK_CLIENT_ID=2468134910156845
+FACEBOOK_CLIENT_SECRET=fe31388c10660cfa2576b98aa3e31ff9

Egbedokun_Olayinka/config/db.js

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+const mongoose = require("mongoose");
+
+const connectDB = async () => {
+  try {
+    const conn = await mongoose.connect(process.env.MONGO_URI, {
+      useCreateIndex: true,
+      useNewUrlParser: true,
+      useUnifiedTopology: true,
+    });
+
+    console.log(`MongoDB Connected: ${conn.connection.host}`);
+  } catch (err) {
+    console.log(`Error: ${err.message}`);
+    process.exit(1);
+  }
+};
+
+module.exports = connectDB;

Egbedokun_Olayinka/config/passport.js

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+const mongoose = require("mongoose");
+const User = require("../models/UserModel");
+const GoogleStrategy = require("passport-google-oauth20").Strategy;
+const FacebookStrategy = require("passport-facebook").Strategy;
+
+module.exports = function (passport) {
+  passport.use(
+    new GoogleStrategy(
+      {
+        clientID: process.env.GOOGLE_CLIENT_ID,
+        clientSecret: process.env.GOOGLE_CLIENT_SECRET,
+        callbackURL: "/auth/google/callback",
+      },
+      async (accessToken, refreshToken, profile, done) => {
+        const newUser = {
+          googleId: profile.id,
+          name: profile.displayName,
+        };
+
+        try {
+          let user = await User.findOne({ googleId: profile.id });
+
+          if (user) {
+            done(null, user);
+          } else {
+            user = await User.create(newUser);
+            done(null, user);
+          }
+        } catch (err) {
+          console.error(err);
+        }
+      }
+    )
+  );
+
+  passport.use(
+    new FacebookStrategy(
+      {
+        clientID: process.env.FACEBOOK_CLIENT_ID,
+        clientSecret: process.env.FACEBOOK_CLIENT_SECRET,
+        callbackURL: "/auth/facebook/callback",
+      },
+      async (accessToken, refreshToken, profile, done) => {
+        const newUser = {
+          facebookId: profile.id,
+          name: profile.displayName,
+        };
+
+        try {
+          let user = await User.findOne({ facebookId: profile.id });
+
+          if (user) {
+            done(null, user);
+          } else {
+            user = await User.create(newUser);
+            done(null, user);
+          }
+        } catch (err) {
+          console.error(err);
+        }
+      }
+    )
+  );
+
+  passport.serializeUser(function (user, done) {
+    done(null, user.id);
+  });
+
+  passport.deserializeUser(function (id, done) {
+    User.findById(id, function (err, user) {
+      done(err, user);
+    });
+  });
+};

Egbedokun_Olayinka/controllers/AuthController.js

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+module.exports = {
+  redirectWelcome: function (req, res, next) {
+    res.redirect("/welcome");
+  },
+  logout: function (req, res, next) {
+    req.logout();
+    res.redirect("/");
+  },
+};

Egbedokun_Olayinka/controllers/UserController.js

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+module.exports = {
+  showLogin: function (req, res, next) {
+    res.render("login");
+  },
+  showWelcome: function (req, res, next) {
+    const name = req.user.name;
+    res.render("welcome", { name });
+  },
+};

Egbedokun_Olayinka/middleware/auth.js

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+module.exports = {
+  ensureAuth: function (req, res, next) {
+    if (req.isAuthenticated()) {
+      return next();
+    } else {
+      res.redirect("/");
+    }
+  },
+
+  ensureGuest: function (req, res, next) {
+    if (req.isAuthenticated()) {
+      res.redirect("/welcome");
+    } else {
+      return next();
+    }
+  },
+};

Egbedokun_Olayinka/models/UserModel.js

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+const mongoose = require("mongoose");
+const Schema = mongoose.Schema;
+
+const userSchema = new Schema({
+  name: {
+    type: String,
+    required: [true, "Please supply a name"],
+  },
+  googleId: {
+    type: String,
+  },
+  facebookId: {
+    type: String,
+  },
+  createdAt: {
+    type: Date,
+    default: Date.now,
+  },
+});
+
+module.exports = mongoose.model("User", userSchema);