thrower: An Elixir repository from mkaravaev

Dear comic fan,

You're invited to a carnival party with the motto "comic-heroes". Some guests dressed up as all the heroes you've admired being a child, especially as Donald Duck. Other guests obviously celebrate the comic villains. That can't be!

Your skills and knowledge of cream pies and physics are remarkable. That is why we need your help to modify a cream pie thrower to show the villains who is winning tonight. :)

Your mission will consist of reprogramming the villains selection module. This module is responsible for selecting the next position to attack given several possible attack positions. The cream pie thrower will communicate via HTTP POST requests with your module, providing the data that the vision module has collected.

The objective of the mission is to develop an HTTP endpoint that accepts JSON data and returns JSON data.

This is an example of a request from the control unit to your module:

[
  {
    "attack-mode": [
      "closest-first"
    ],
    "radar": [
      {
        "position": {
          "x":0,
          "y":40
        },
        "villains": [
          {
            "costume": "Shir Khan",
            "malice": 80
          },
          {
            "costume": "Voldemort",
            "malice": 20
          },
          {
            "costume": "Donald Duck"
          }
        ]
      },
      {
        "position": {
          "x": 2,
          "y":60
        },
        "villains": [
          {
            "costume":"Shir Khan",
            "malice": 40
          }
        ]
      },
      ...

And here's a definition of the properties:

attack-mode: Chosen mode for the attack.
radar
- position: Target group position.
  - x: X coordinate.
  - y: Y coordinate.
- villains: Found villains.
  - costume: Costume type.
  - malice: The malice of the villain.

Given the previous request, your module should return a response like this:

{ "position": { "x": 0, "y": 40 }, "villains": [ "Shir Khan", "Voldemort" ] }

The attack modes we have implemented in the cream pie thrower are:

closest-first: Attack the nearest areas.
furthest-first: Attack the furthest areas.
avoid-crossfire: Do not attack any area where Donald Duck costume is present.
prioritize-vader: The attack must always prioritize Darth Vader costumes.

Costumes that the vision system will detect are:

Donald Duck
Shir Khan
Joker
Darth Vader
Lucifer
Captain Hook
Voldemort

Keep in mind that attack modes can be chained but you should not chain opposite attack modes, like closest-first and furthest-first. Example

[{ "attack-mode": [ "closest-first", "prioritize-vader" ], "radar": ...

New guests will show up at the party and dress like other comic villains; the system should be prepared to add new attack modes.

By running the test_attack.sh script on your machine, you will have access to a set of tests to prove your villains selection module, present in the test_cases.json file.

At the end of the mission, you must compress all source files with the unmodified test_attack.sh file included in a file called <your-name>_codetest_sonnen.zip and send it back to us.

PS: Add to the compressed file any document that you have generated to solve the problem even if it is just a text file, a diagram, git commits etc. because we would like to see your problem-solving approach, not only the final solution.

mkaravaev/thrower