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nanoreddit

Instructions

Implement a REST API in Go meeting the requirements laid out below. You may use whatever other open-source libraries you see fit to get the job done.

Before getting started on the challenge, let’s get some logistics out of the way:

  1. You should create a private repository on Github and add @dmaii and @ellismiranda as collaborators.
  2. Create an empty branch with a name of your choosing and push it up. You should push your commits to this branch.
  3. Create a pull request to master from this branch and copy/paste the “Requirements” section into the description.
  4. Add @dmaii and @ellismiranda as reviewers when you are ready for us to review.

Please complete this exercise within 3 days of when you receive it. Good luck and have fun!

Requirements Your task will be to build a simplified version of the Reddit feed API that powers http://old.reddit.com. Please use Go as the programming language. This will be a REST API that allows users to do the following:

Create new posts. Posts should be validated for correctness. They should have the following fields:

  1. Title
  2. Author: This should be a random 8 character string prefixed with t2_. The 8 character string should only contain lowercase letters and numbers. For example, my user ID is t2_11qnzrqv.
  3. Link: This should be a valid URL. It's ok if your validation is not perfect.
  4. Subreddit: The subreddit associated with this post.
  5. Content: In the case of a text-only post. A post cannot have both a link and content populated.
  6. Score: The total score associated with the upvotes and downvotes of a post.
  7. Promoted: A boolean field indicating whether or not the post is an ad or not.
  8. NSFW: Not safe for work. A boolean that indicates whether or not the post is safe for work

Generate a feed of posts. This feed should have the following characteristics:

  1. It should be ranked by score, and the post with the highest score should show up first.
  2. It should be paginated, and each page should have at most 27 posts. Your API should support fetching a specific page in the feed.
  3. If a page has 3 posts or greater, the second post should always be a promoted post if a promoted post is available, regardless of the score.
  4. If a page has greater than 16 posts, the 16th post should always be a promoted post if a promoted post is available, regardless of the score.
  5. As an exception to rules 3 and 4, a promoted post should never be shown adjacent to an NSFW post. You can ignore rules 3 and 4 in this case. Your codebase should have a README with setup instructions, as well as integration and unit tests.