app.js

// Imports
const express = require("express")
const bodyParser = require("body-parser");
const mongoose = require("mongoose")
const date = require(__dirname + "/date")
require("dotenv").config()

// Constants
const app = express()
const port = process.env.PORT || 3000;
const today = date.getDay();
const mongo_url = process.env.MONGO_URL
let error = false
const errorMessage = "Please Enter a valid name for To-Do."



// App Methods
app.use(bodyParser.urlencoded({ extended: true }))
app.use(express.static(__dirname + "/public"))
app.set("view engine", "ejs")


// Database
mongoose.connect(mongo_url, { useNewUrlParser: true }, (err) => {
    if (err) throw err;
    console.log("DB Connected successfully");
});
const itemSchema = {
    name: String
}
const Item = mongoose.model("Item", itemSchema);


// Routes
app.get("/", (req, res) => {
    Item.find({}, (err, items) => {
        if (err) throw (err)
        res.render("list", { listTitle: today, todos: items, error, errorMessage });
    })
})
app.post("/", (req, res) => {
    const todo = (req.body.todo).trim();
    if (todo == "") {
        error = true;
    }
    else {
        const item = new Item({
            name: todo
        })
        item.save();
    }
    res.redirect("/")
})

app.post("/delete", (req, res) => {
    const todo_id = req.body.deleteTodo;
    Item.findByIdAndRemove(todo_id, (err) => {
        if(err) throw (err) 
         console.log("Successfully Deleted todo with id " + todo_id)
    })
    res.redirect("/")
})

app.post("/error", (req, res) => {
    error = false;
    res.redirect("/")
})

app.listen(port, () => {
    console.log(`Server is Running on Port ${port}`)
})