Friends

(If you first thought on the TV comedy, you are getting old)

We are going to make a Social Network MVP. No frontend. Just an API.

We will have users that can friend other users.

Specs

Users will only have:

• Username (unique) 5-10 characters, ONLY alphanumeric characters (no dots no commas no underscores)
• Sign up date set on creation
• Profile visibility:
  • Hidden: Cannot receive friendship requests
  • Public: Can receive friendship requests (DEFAULT: When signup)
• Password 8-12 characters, ONLY alphanumeric characters (no dots no commas no underscores)

We need the following use cases:

• Sign up user
• Request friendship (Ensure users requesting, accepting or declining friendships are theirselves)
  • Accept friendship
  • Decline friendship (when a user gets 3 declines that user gets a forever alone badge)
• Get user friends

Tech specs

Required

• Good OOP and good practices. This is the most important.
• Java (or Kotlin. If you choose Kotlin over Java be pretty sure what you do. REMEMBER: We value good OOP and good practices.)
• No frontend
• API
• Use (or not) whatever framework you want
• Do your best. Be proud of what you did. That's it.

Not needed

• Database: You can persist everything in memory.
• Docker: as we do not require using database or caches. We will run the application directly in local.
• Deploy
• Asynchrony (Neither futures nor reactive)

Preferred but not mandatory

DON'T WORRY ABOUT THIS, IF YOU FEEL MORE COMFORTABLE WITH OTHER FRAMEWORK OR BUILD SYSTEMS USE THEM. SERIOUSLY

• Gradle over Maven
• Spring over other frameworks

Notes

If you are going to use Authorization headers, use Basic Auth