Adds update endpoint

package.json

@@ -17,6 +17,7 @@
     "body-parser": "^1.18.3",
     "expect": "^23.6.0",
     "express": "^4.16.3",
+    "lodash": "^4.17.11",
     "mocha": "^5.2.0",
     "mongodb": "^3.1.6",
     "mongoose": "^5.2.17",

server/server.js

@@ -1,13 +1,14 @@
-let express = require('express');
-let bodyParser = require('body-parser');
-let { ObjectID } = require('mongodb');
+const _ = require('lodash');
+const express = require('express');
+const bodyParser = require('body-parser');
+const { ObjectID } = require('mongodb');
 
-let { mongoose } = require('./db/mongoose');
-let { Todo } = require('./models/todo');
-let { User } = require('./models/user');
+const { mongoose } = require('./db/mongoose');
+const { Todo } = require('./models/todo');
+const { User } = require('./models/user');
 
-let app = express();
-let port = process.env.PORT || 3000; 
+const app = express();
+const port = process.env.PORT || 3000; 
 
 app.use(bodyParser.json());
 
@@ -61,6 +62,30 @@ app.delete('/todos/:id', (req, res) => {
   }).catch((e) => res.status(400).send());
 });
 
+app.put('/todos/:id', (req, res) => {
+  const id = req.params.id;
+  const body = _.pick(req.body, ['text', 'completed']);
+
+  if (!ObjectID.isValid(id)) {
+    return res.status(404).send();
+  }
+
+  if (_.isBoolean(body.completed) && body.completed) {
+    body.completedAt = new Date().getTime();
+  } else {
+    body.completed = false;
+    body.completedAt = null;
+  }
+
+  Todo.findByIdAndUpdate(id, {$set: body}, {new: true}).then((todo) => {
+    if (!todo) {
+      return res.status(404).send();
+    }
+
+    res.send(todo);
+  }).catch((e) => res.status(400).send());
+});
+
 app.listen(port, () => {
   console.log(`Started on port: ${port}`);
 });