Added backend+database support

webmarker_backend/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "webmarker_backend",
+  "version": "1.0.0",
+  "description": "The backend",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.17.3",
+    "mongodb": "^4.5.0"
+  }
+}

webmarker_backend/server.js

@@ -0,0 +1,64 @@
+const express = require('express');
+const app = express();
+const { MongoClient } = require('mongodb');
+const port = process.env.PORT || 3001;
+
+const uri = "mongodb://localhost:27017";
+
+const client = new MongoClient(uri);
+
+app.use(express.json());
+
+app.get('/get', async (req, res) => {
+  const data = await getDoc();
+  res.send(data);
+});
+
+app.post('/post', (req, res) => {
+  // insertDoc(req.body);
+  console.log(req.body)
+});
+
+async function insertDoc(doc) {
+  try {
+    await client.connect();
+
+    const database = client.db("sample_db");
+    const list = database.collection("list");
+    const result = await list.insertOne(doc);
+
+    console.log('DONE');
+  } 
+  
+  catch(err) {
+    console.log(err);
+  }
+  
+  finally {
+    await client.close();
+  }
+}
+
+async function getDoc() {
+  try {
+    await client.connect();
+
+    const database = client.db("sample_db");
+    const list = database.collection("list");
+    const result = await list.find({}).toArray();
+
+    return result;
+  }
+  
+  catch(err) {
+    console.log(err);
+  }
+  
+  finally {
+    await client.close();
+  }
+}
+
+app.listen(port, () => {
+  console.log(`Success! running on port ${port}.`);
+});