конец занятия №91

app/config.js

@@ -7,5 +7,9 @@ module.exports = {
     db: {
         name: "shop",
         url: "mongodb://localhost"
+    },
+    facebook: {
+        appId : '175634290592255',
+        secret: '8904c56e5400c12237cce6f85e1cefe0'
     }
 };
\ No newline at end of file

app/models/User.js

@@ -36,6 +36,10 @@ const UserSchema = new Schema({
         required: true,
         enum: ['user', 'admin'],
         default: 'user'
+    },
+    facebookId: {
+        type: Number,
+        minlength: 10
     }
 });
 

app/users.js

 const express = require("express");
 const User = require("./models/User");
 const auth = require("./middleware/auth");
+const config = require('./config');
+const {nanoid} = require('nanoid');
+const axios = require('axios');
 
 const router = express.Router();
 
@@ -49,6 +52,43 @@ const createRouter = () => {
         return res.send(success);
     });
 
+    router.post('/facebookLogin', async (req, res) => {
+        const inputToken = req.body.accessToken;
+        const accessToken = `${config.facebook.appId}|${config.facebook.secret}`;
+
+        const tokenUrl = `https://graph.facebook.com/debug_token?input_token=${inputToken}&access_token=${accessToken}`;
+
+        try{
+            const response = await axios.get(tokenUrl);
+            if(response.data.error) {
+                return res.status(401).send({message: 'Facebook token error'});
+            }
+            if(response.data.data.user_id !== req.body.userID) {
+                return res.status(401).send({message: 'Wrong User ID'});
+            }
+            let user = await User.findOne({facebookId: req.body.id});
+
+            if(!user) {
+                user = new User({
+                    username: req.body.email,
+                    email: req.body.email,
+                    password: nanoid(),
+                    facebookId: req.body.id
+                })
+            }
+
+            user.generateToken();
+            await user.save({validateBeforeSave: false});
+            return res.send({message: 'Login or register successful', user});
+
+        }catch (e) {
+            return res.status(401).send({message: 'Facebook token error', e});
+        }
+
+
+
+    });
+
     return router;
 };
 

package-lock.json

@@ -155,6 +155,14 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
     },
+    "axios": {
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.21.1.tgz",
+      "integrity": "sha512-dKQiRHxGD9PPRIUNIWvZhPTPpl1rf/OxTYKsqKUDjBwYylTvV7SjSHJb9ratfyzM6wCdLCOYLzs73qpg5c4iGA==",
+      "requires": {
+        "follow-redirects": "^1.10.0"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -760,6 +768,11 @@
         }
       }
     },
+    "follow-redirects": {
+      "version": "1.13.2",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.2.tgz",
+      "integrity": "sha512-6mPTgLxYm3r6Bkkg0vNM0HTjfGrOEtsfbhagQvbxDEsEkpNhw582upBaoRZylzen6krEmxXJgt9Ju6HiI4O7BA=="
+    },
     "forwarded": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",

package.json

@@ -11,6 +11,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "axios": "^0.21.1",
     "bcrypt": "^5.0.0",
     "cors": "^2.8.5",
     "express": "^4.17.1",