server.js

//npm install express mongoose ejs dotenv
//npm install --save-dev nodemon

//declare variables
const express = require("express");
const app = express();
const PORT = process.env.PORT || 8500;
const mongoose = require("mongoose");
// const { restart } = require("nodemon");
const TodoTask = require("./models/todotask");
require("dotenv").config();

//set middleware
app.set("view engine", "ejs");
app.use(express.static("public"));
app.use(express.urlencoded({ extended: true }));

mongoose.connect(
  process.env.DB_CONNECTION,
  { useNewUrlParser: true },
  (err) => {
    if (err) {
      console.log(err);
    } else {
      console.log("Connected to DB");
    }
  }
);

// GET METHOD
app.get("/", async (req, res) => {
  try {
    TodoTask.find({}, (err, tasks) => {
      res.render("index.ejs", { todotasks: tasks });
    });
  } catch (err) {
    if (err) return res.status(500).send(err);
  }
});

//POST METHOD
app.post("/", async (req, res) => {
  const todoTask = new TodoTask({
    title: req.body.title,
    content: req.body.content,
  });
  try {
    await todoTask.save();
    console.log(todoTask);
    res.redirect("/");
  } catch (err) {
    if (err) return res.status(500).send(err);
    res.redirect("/");
  }
});

//EDIT or UPDATE METHOD

app
  .route("/edit/:id")
  .get((req, res) => {
    const id = req.params.id;
    TodoTask.find({}, (err, tasks) => {
      res.render("edit.ejs", {
        todoTasks: tasks,
        idTask: id,
      });
    });
  })
  .post((req, res) => {
    const id = req.params.id;
    TodoTask.findByIdAndUpdate(
      id,
      {
        title: req.body.title,
        content: req.body.content,
      },
      (err) => {
        if (err) return res.status(500).send(err);
        res.redirect("/");
      }
    );
  });

//delete
app
  .route("/remove/:id")
  .get((req, res) => {
    const id = req.params.id;
    TodoTask.findByIdAndRemove(id, (err) => {
      if (err) return res.status(500).send(err);
      res.redirect("/");
    });
  });

app.listen(PORT, () => console.log(`Server is running on port ${PORT}`));