For this assignment, you are going to build a single API endpoint in Express that fetches and caches data from a GitHub API endpoint.

The endpoint you are going to build will be GET http://localhost:8000/api/github/:username, where :username can be filled in with a GitHub username (e.g. http://localhost:8000/api/github/iamdtang which is me). When you make a request to this endpoint, use the :username variable in the URL using request.params to make a request to https://api.github.com/users/iamdtang (where iamdtang will be whatever :username contains) using fetch(). Write out the entire response from the GitHub API to a file named cache-{username}.json (e.g. cache-iamdtang.json) based on the requested username.

Subsequent requests to this endpoint for the same username should read from the cached file instead of making a request to the GitHub API.

When a GitHub API response is successfully cached, use console.log() to log out GitHub API data was cached for {username} in {file}. Replace {username} and {file} with the actual values.

When reading from the cache, use console.log to log out GitHub API data for {username} was read from the cache. Replace {username} with the actual value.

Code Requirements

1. Other than Express, do not reach for any other third-party libraries.
2. You can complete this assignment using only fs.readFile(), fs.writeFile(), fetch(), console.log(), and JSON.stringify() - convert JSON into a string of JSON or JSON.parse() - convert a string of JSON into JSON (depending how it is written).
3. Don't use async/await if you know what that is.
4. Don't commit node_modules. Create a .gitignore file and add node_modules to it.

Submission

Create a video with audio using Zoom where you demo your assignment and explain where you fulfilled or did not fulfill each requirement. Put a link to this recording in the README.md file at the root of your project.

https://classroom.github.com/a/4eCo--Iv

If you're having problems uploading to GitHub, please zip up your project excluding the vendor folder and email it to the instructor and TA. Please include the Zoom recording URL in the email.