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app.js
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app.js
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//jshint esversion:6
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(bodyParser.urlencoded({extended: true}));
app.use(express.static("public"));
// Specifying our mongoose url server
mongoose.connect("mongodb://localhost:3000/todolistDB", {useNewUrlParser: true});
// Creating our database schema for the app todolist
const itemsSchema = {
name: String
};
// Creating a mongoose model for our database
const Item = mongoose.model("Item", itemsSchema);
const item1 = new Item({
name: "Welcome to your Todolist!"
});
const item2 = new Item({
name: "Click the + sign to add a new item!"
});
const item3 = new Item ({
name: "<-- Check box to delete an item!"
});
const defaultItems = [item1, item2, item3];
const listSchema = {
name: String,
items: [itemsSchema]
};
const List = mongoose.model("List", listSchema);
// Home route function
app.get("/", function(req, res) {
// Sending our items stored in the database to the home route
Item.find({}, function(err, foundItems) {
// if our database foundItems is empty then the defaultItems which is 3 is added.
// The function checks if there is any error and log it in the console to be checked.
// if there is no errors then it logs that we have successfully saved our defaultItems to our array item.
// It redirects to the home route and render the newListItems in our browser.
if (foundItems.length === 0) {
Item.insertMany(defaultItems, function(err) {
if (err) {
console.log(err);
} else {
console.log("Succesfully saved Items to our document in database.")
}
});
res.redirect("/");
} else {
res.render("list", {listTitle: "Today", newListItems: foundItems});
}
});
});
app.get("/:customListName", function(req, res){
const customListName = _.capitalize(req.params.customListName);
// Creating a new list if the list doesn't exist and if it does exist display the already existing list.
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(function(){
res.redirect("/" + customListName);
});
} else {
//Show an existing list
res.render("list", {listTitle: foundList.name, newListItems: foundList.items});
}
}
});
});
// Passing the entered new items to our to lists in the home route as well as our work route using BodyParser
app.post("/", function(req, res){
// Posting a new item into our todo list using mongoose
// We grab the new added item with req.body.newItem
// Then create a mongoose item model that stores the new Item and list name and pass the itemName as well as listName which we grabbed from the body-parser
// We save our new Item in the databse then redirect the saved new Item to our home page or home route.
const itemName = req.body.newItem;
const listName = req.body.list;
const item = new Item ({
name: itemName
});
if (listName === "Today") {
item.save();
res.redirect("/");
} else {
List.findOne({name: listName}, function(err, foundList) {
foundList.items.push(item);
foundList.save();
res.redirect("/" + listName); // Redirects to the newly created listName instead of home route
});
}
});
// Posting our delete route when an item is deleted from the todolist
app.post("/delete", function(req, res) {
const checkedItemId = req.body.checkbox;
const listName = req.body.listName;
// When the item to be deleted is from the home route Today listName then delete and remain in the home route
if (listName === "Today") {
Item.findByIdAndRemove(checkedItemId, function(err) {
if (!err) {
console.log("Succesfully deleted the checked item.")
res.redirect("/");
}
});
} else {
// If the item we want to delete is not from the home route.
// we find the list name we want to delete from , we scan through the array of items with a mongoose $pull model
// Find the item in the array we want to delete before deleting it from our database.
// Then redirect to the same customListName
List.findOneAndUpdate({name: listName}, {$pull: {items: {_id: checkedItemId}}}, function(err, foundList) {
if (!err) {
res.redirect("/" + listName); // After deletion redirect to the same listName item was delted from.
}
});
}
});
// About route and it's window
app.get("/about", function(req, res){
res.render("about");
});
// localhost server listening to help run your code in the browser without the database for testing.
// heroku assigned port or locally assigned port
let port = process.env.PORT;
if (port == null || port == "") {
port = 3000;
}
app.listen(port, function() {
console.log("Server has started Successfully.");
});