NodeJS Intro Workshop

Base instructions

• Fork this repository and clone it to your Cloud9 workspace
• Notice that the .gitignore file contains one line that says "node_modules". What this is doing is telling Git that it should ignore the contents of the node_modules directory even when we do git add .. Since the code in node_modules can be downloaded from the NPM registry, and package.json has a reference to every package the project needs, we don't need to commit node_modules in our repository.
• All the code goes in the workshop.js file.

Calling APIs

In order to do these exercises, you will need to know about the JSON format.

getIssPosition

1. First, install the request-promise module with NPM, making sure it's added to package.json.
2. Complete the code of this function so that it returns the position of the ISS as a Promise.
3. Make sure to use the data from http://api.open-notify.org/iss-now.json to do your work
4. The ISS API returns the position keys as latitude and longitude. Return them as lat and lng instead.

getAddressPosition

1. Complete the code of this function to return a Promise for a lat/lng object
2. Use the Google Maps Geocoding API to do this
3. Make sure to only return an object with lat/lng and not the whole response

getCurrentTemperatureAtPosition

1. Go to Dark Sky API and read the documentation
2. Signup and get a free API key
3. Complete the code of the function. The position parameter is an object with lat and lng.
4. Make sure your function only returns a Promise for the current temperature (a number) and nothing else

getCurrentTemperature

While it's useful to get the current temperature for a specific lat/lng, most often we want to provide the name of a place instead.

You already created a function that can do address ==> position, and one that can do position ==> temperature. For this exercise, re-use these two functions to create one that goes directly from address ==> temperature.

The code of this function should be very short, re-using two previously created functions.

getDistanceFromIss

Again here you should re-use two previously created functions, plus the getDistance function provided to you in workshop.js.

One of the functions does address ==> position and the other simply does nothing ==> position. The getDistance function needs the two positions to compute the final value.

In this case, the two functions can be called in parallel. Make sure to use Promise.all to make it happen!

---

Guess The Number

This exercise will be done in a new file, guess-the-number.js.

Using the inquirer module, write a program that will play the "guess the number game":

• Create a random number between 1 and 100. Call it the hidden number
• Start with 5 guesses
• As long as there are guesses left:
  • Ask the user for a number between 1 and 100 until they give you one
  • If they find the hidden number, they win the game. END
  • Otherwise, tell them whether their guess is lower or higher than the hidden number
  • Loop back
• The user has lost the game. END

---

Challenge: Hangman

This exercise will be done in a new file, hangman.js.

Using the inquirer module and any others, write a program that will play Hangman according to the "Method 1" rules at http://www.wikihow.com/Play-Hangman

You can skip the step that says "draw the hangman". Instead, simply count 8 guesses.

To make it more fun, integrate the following functionality:

• Allow players to re-play after they won or lost (inquirer has a yes/no type of question)
• Get an account at Wordnik and use their Random Words API to start each game with a new random word.
• Actually draw the hangman using ASCII art