Completed

.gitignore

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+node_modules/

app.js

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+const express = require("express");
+const bodyParser = require("body-parser");
+const mongoose = require("mongoose");
+const _ = require("lodash");
+
+const app = express();
+
+app.set('view engine', 'ejs');
+
+app.use(express.static("public"));
+app.use(bodyParser.urlencoded({ extended: true }));
+
+mongoose.connect("mongodb+srv://admin-manan:test123@cluster0.x45lx.mongodb.net/todoListDb", { useNewUrlParser: true, useUnifiedTopology: true });
+
+const itemsSchema = {
+    name: String
+};
+
+const Item = mongoose.model("Item", itemsSchema);
+
+const default1 = new Item({
+    name: "Welcome to your todo list",
+});
+const default2 = new Item({
+    name: "Hit the + button to add a new item"
+});
+const default3 = new Item({
+    name: "<-- Hit this checkbox to delete an item"
+});
+const defaultItems = [default1, default2, default3];
+
+const listSchema = {
+    name: String,
+    items: [itemsSchema]
+};
+
+const List = mongoose.model("List", listSchema);
+
+app.get("/", function (req, res) {
+
+    Item.find({}, function (err, foundItems) {
+        if (foundItems.length === 0) {
+            Item.insertMany(defaultItems, function (err) {
+                if (err) {
+                    console.log("Error");
+                }
+                else {
+                    console.log("Succesfully added");
+                }
+            })
+            res.redirect("/");
+        } else {
+            res.render("list", {
+                listTitle: "Today",
+                newItems: foundItems
+            });
+        }
+
+    });
+
+})
+
+app.post("/", function (req, res) {
+    let itemName = req.body.toDo;
+    const listName = req.body.list;
+
+    const userItem = new Item({
+        name: itemName
+    });
+
+    if (listName === "Today") {
+        userItem.save();
+        res.redirect("/");
+    } else {
+        List.findOne({ name: listName }, function (err, foundList) {
+            foundList.items.push(userItem);
+            foundList.save();
+            res.redirect("/" + listName);
+        });
+    }
+
+})
+
+app.post("/delete", function (req, res) {
+    let checkedItemId = req.body.checkbox;
+    const listName = req.body.listName;
+
+    if (listName === "Today") {
+        Item.findByIdAndRemove(checkedItemId, function (err) {
+            if (err) {
+                console.log("Error removing the checked item");
+            }
+            else {
+                console.log("Succesfully removed the checked item from the list");
+                res.redirect("/");
+            }
+        });
+    }
+    else {
+        List.findOneAndUpdate({ name: listName }, { $pull: { items: { _id: checkedItemId } } }, function (err, foundList) {
+            if (!err) {
+                res.redirect("/" + listName);
+            }
+        });
+    }
+
+});
+
+app.get("/:customListName", function (req, res) {
+    const customListName = _.capitalize(req.params.customListName);
+    List.findOne({ name: customListName }, function (err, foundList) {
+        if (!err) {
+            if (!foundList) {
+                //create a new list
+                const list = new List({
+                    name: customListName,
+                    items: defaultItems
+                });
+                list.save();
+                res.redirect("/" + customListName);
+            }
+            else {
+                //show the existing lis
+                res.render("list", {
+                    listTitle: foundList.name,
+                    newItems: foundList.items
+                });
+            }
+        }
+
+    });
+});
+
+app.listen(3000, function () {
+    console.log("Server started on port 3000");
+})