Color Cleaver

Introduction

This is our first chance to make the full application: color-cleaver. In the "back-end" we'll create the functions and "database" and in the "front-end" we will interact with the users.

Workflow

Starting with the backend, write the four functions we will be using in our code. colorCombinator will take two primary colors, and return to us the result of combining them. colorDeconstructor will take a secondary color and return to us the two primary colors that make the color up. The other two functions are for authentication purposes and will return a boolean for whether a given color is a secondary or primary color.

Make sure you pass the tests with npm test before wiring the front-end up!

For the front-end, you'll be working entirely in color-cleaver.js. Your only concern is taking input from the user's terminal (via node color-cleaver.js [color 1] [optional color 2]) and outputting some correct (and kind) messages.

Steps For the Front End

1. The first thing we need to do is grab our users' input. There might be as many as two, so grab two getInput return values and put them in variables.
2. Now we'll need to take into account that some of those values might be undefined. Note that that's not the literal letters "undefined", it's a value--no quotes! We'll want to send them a message if BOTH are undefined; that means they didn't put even a single color in.
3. If there is ONE color, we want to pass it to colorDeconstructor, take the return value (e.g., 'red and yellow'), and put it into a sentence that tells them the result in a user-friendly way.
4. If there were TWO colors, then we want to get the return value from colorCombinator (passing in both of the users' colors) and put THAT in a sentence.
5. Oh, but of course there's one more thing: the user's input might not be undefined, but that doesn't mean they're colors. Use your isValid functions from the backend so that, if you're dealing with one color, you send them a message if it's not a primary color, and if you're dealing with two colors, you send them a message if EITHER isn't a secondary color.

And that's it! That's our whole front end! Although...

Flowcharts

The steps above are in the order a person would tackle the problems. But JavaScript is not a person (sounds like a very nerdy Dark Mirror episode though), and we'll need to handle the logic in a more computer-y way.

So here are two different flowcharts; the first one is a little strange logically, but is designed to produce less nested code. The second is easier to understand, but if you follow it exactly, you'll most likely end up with nested if statements. It's up to you! Or make your own!