NodeJS 101 course

Much of the course will be done on the command line so it's important to be familiar with it. We will use the BASH shell. If you are running OSX or Linux then you already have this. If you are on Windows then these are your options:

* Built in Windows 10 Bash shell. If you have the latest Windows 10 anniversary update you can activate a native Bash shell. I haven't tried this myself yet. If it works well it should be the best option. See instructions here: [How to Install and Use the Linux Bash Shell on Windows 10](http://www.howtogeek.com/249966/how-to-install-and-use-the-linux-bash-shell-on-windows-10/)

* Git Bash. This comes with Git for windows and should already be installed if you have installed Git. If not you can re-install git and make sure it is selected. [Git for windows](https://git-scm.com/download/win)

* Cygwin. Cygwin is like installing a virtual Linux on your PC. Very powerful, with many options, but not the best choice if you don't like spending time configuring things. [Cygwin project](https://www.cygwin.com/)

Please look at this tutorial to help you get up to speed with using the command line: [Digital Ocean - getting started with Linux](https://www.digitalocean.com/community/tutorial_series/getting-started-with-linux)

Git is required to upload your homework. You will need:

* A github account. Sign up here [GitHub](https://github.com)

* Git installed on your laptop All installers are here: [Git SCM](https://git-scm.com/downloads). If you are running Linux you can also install by using the package manager of your distribution.

* A working knowledge of using git. Here is a short tutorial [Digital Ocean Git tutorial](https://www.digitalocean.com/community/tutorials/how-to-use-git-effectively). Here is a cheat sheet. Print out and keep next to you :-) [Git cheat sheet](https://services.github.com/kit/downloads/github-git-cheat-sheet.pdf). If you want to deep dive you can get this free book [Pro-Git](https://progit2.s3.amazonaws.com/en/2016-03-22-f3531/progit-en.1084.pdf).

Obviously you need Node.js installed to use :-) The installer for your OS can be downloaded from their website [Node.js](https://nodejs.org). If you are running Linux you can also install by using the package manager of your distribution. Please install the 'Current' version 6.6.

"What it really means is that Node.js is not a silver-bullet new platform that will dominate the web development world. Instead, it’s a platform that fills a particular need."

1. Setting up: node, git, bash, npm, (See https://github.com/HackYourFuture/Node.js/blob/master/README.md)

2. Introduction to nodejs

https://www.tutorialspoint.com/nodejs/nodejs_introduction.htm

http://blog.modulus.io/absolute-beginners-guide-to-nodejs

https://www.toptal.com/nodejs/why-the-hell-would-i-use-node-js

https://airpair-blog.s3.amazonaws.com/wp-content/uploads/2014/08/node.png

3. Nodejs in the MEAN stack (clients and servers)

http://image.slidesharecdn.com/mongodbdayspresentation-151014213733-lva1-app6892/95/starting-from-scratch-with-the-mean-stack-22-638.jpg?cb=1444858819

4. Asynchronous callbacks

5. HTTP server

6. Localhost

7. Error codes http://www.restapitutorial.com/httpstatuscodes.html

8. npm

9. The assignment

This week's homework

Create a http server that can add and subtract from a number, which we will call the "state". Please see in `index.js` in this folder as starting material. Pay extra attention to line 21, which contains some hints for this week `console.log('New http request received', request.url);`

Rule 1: DO NOT USE EXPRESS.JS

Rule 2: you can use other packages, but you HAVE to also make a version WITHOUT any NPM packages (http, of course, is not NPM but a node native package)

Endpoints criteria

Video: https://www.youtube.com/watch?v=pTbSfCT42_M

Read: http://callbackhell.com/

Video: https://www.youtube.com/watch?v=e1Ln1FrLvh8

Read: http://openmymind.net/2012/2/3/Node-Require-and-Exports/

- Video basic: https://www.youtube.com/watch?v=pYOltVz7kL0

- Video routing: https://www.youtube.com/watch?v=_D2w0voFlEk (please focus on request.url, not request.method)

- Read: [Node JS documentation about http](https://nodejs.org/en/docs/guides/anatomy-of-an-http-transaction/)

- Read Advanced:

Video PC: -- ()

These are the specs for this week's assignment:

- The user can run a NodeJs to-do app

- The user can be able to run the file using node index.js

- There should be a "help" section that lists all the commands for how to use the app

The following commands should be present:

- No command: show help section (`node index.js`)

- help: show help section (`node index.js help`)

- list: show current todo's, or show an appropriate text if there are no todos (`node index.js list`)

- add: add a todo item. all the words behind "add" are entered as 1 todo item to the list (`node index.js add "Buy groceries"`)

- remove: remove a todo item by its 1-base index. (`node index.js remove 2`)

- reset: remove all todo items from the list (`node index.js reset`)

- *BONUS:* update: update a todo item with new text (`node index.js update 3 "Wash teeth"`)

- What representation you use in your file (CSV, TSV, JSON, ...)

- Handle edge cases, i.e. control what happens if user enters unexpected input

Create Node JS server that

- Listens on port 8080

- Allows users to list todos, get a todo, delete a todo, delet all todos, and update a todo.

Some other notes:

- All responses should be in JSON.

- Follow the REST design principles: Use the proper method, response status codes, and consistent URL paths.

- Try to apply the MVC model to your file structure. It will save you time in following assignments!

- Test your API using Postman.

- There is a commented out example to start with in my `index.js`