Impl: creating users

Duplicate `usernames` allowed, user `_id` is unique and used to identify accounts

index.js

@@ -1,16 +1,56 @@
 const express = require("express");
 const app = express();
 const cors = require("cors");
+const mongoose = require("mongoose");
 require("dotenv").config();
 
 const PORT = process.env.PORT || 16749;
+const MONGODB_URI = process.env.MONGODB_URI || "";
+
+mongoose.connect(MONGODB_URI, {
+  // @ts-ignore
+  useNewUrlParser: true,
+  useUnifiedTopology: true,
+});
+
+const exerciseLogsSchema = new mongoose.Schema({
+  username: { type: String, required: true },
+  log: [
+    {
+      description: { type: String, required: true },
+      duration: { type: Number, required: true },
+      date: { type: String, required: true },
+    },
+  ],
+});
+
+const exerciseLogs = mongoose.model("ExerciseLogs", exerciseLogsSchema);
 
 app.use(cors());
 app.use(express.static("public"));
+app.use(express.urlencoded({ extended: false }));
 app.get("/", (req, res) => {
   res.sendFile(__dirname + "/views/index.html");
 });
 
+app.post("/api/users", (req, res) => {
+  const username = req.body.username;
+  const exerciseLogsModel = new exerciseLogs({ username: username });
+  exerciseLogsModel
+    .save()
+    .then((user) => {
+      if (user) return res.json({ username: user.username, _id: user._id });
+      res.status(500);
+      res.json({ error: `Error creating user: ${username}` });
+    })
+    .catch((err) => {
+      res.status(500);
+      return res.json({
+        error: `Error type 2 while creating user: ${username}`,
+      });
+    });
+});
+
 const listener = app.listen(PORT, () => {
   console.log("Your app is listening on port " + listener.address().port);
 });