added delete function

webmarker_backend/server.js

@@ -1,6 +1,6 @@
 const express = require('express');
 const app = express();
-const { MongoClient } = require('mongodb');
+const { MongoClient, ObjectId } = require('mongodb');
 const phantom = require('phantom');
 
 const port = process.env.PORT || 3001;
@@ -23,6 +23,14 @@ app.post('/post', async (req, res) => {
   insertDoc(req.body);
 });
 
+app.delete('/delete', async (req, res) => {
+  const id = req.body.id.toString();
+
+  await deleteDoc(id);
+
+  res.send(`Bookmark with ObjectId "${id}" deleted.`);
+});
+
 async function insertDoc(doc) {
   try {
     await client.connect();
@@ -61,6 +69,24 @@ async function getDoc() {
   }
 }
 
+async function deleteDoc(doc) {
+  try {
+    await client.connect();
+
+    const database = client.db("sample_db");
+    const list = database.collection("list");
+    const result = await list.deleteOne({"_id": ObjectId(doc)});
+  } 
+  
+  catch(err) {
+    console.log(err);
+  }
+  
+  finally {
+    await client.close();
+  }
+}
+
 async function getTitle(url) {
   const instance = await phantom.create();
   const page = await instance.createPage();