SpaceTravelCalculator

This mini app its for calculate the fuel used in a travel to another planets

Calculate the fuel based in the launch and land, so the fuel its the exact amount for all the launch an lands

Prerequisites

Docker with Compose
Maketool (already in linux and mac)

The first step (Building and Dockerize)

With maketool you can excecute all commands easy, with just make all be enough to create all necessary parts

How to run this?

You can run the code in 3 ways

With preloaded bodies

Mix command (make calculate)
Using tests (make testing)

With dynamic

Phoenix Server (make up)

Mix command

Using make calculate you can run all math

You can edit from /lib/space_travel_calculator/mix/tasks/calculate.ex and change the params to another ones

Using tests

Using make testing you can run the examples listed on the doc

Phoenix Server

Exist 2 api routes

To get some plates and their gravity

Call: GET /api/planets

Response: 
{
    "earth": {
        "gravity": 9.807, 
        "measure": "m/s^2"
    },
    "mars": {
        "gravity": 3.711, 
        "measure": "m/s^2"
    },
    "moon": {
        "gravity": 1.62, 
        "measure": "m/s^2"
    }
}

To calculate based in a route

POST /api/calculate {
        "ship_mass": 28801,
        "route": [
          %{
            "type": "launch",
            "gravity": 9.807
          },
          %{
            "type": "land",
            "gravity": 1.62
          },
          %{
            "type": "launch",
            "gravity": 1.62
          },
          %{
            "type": "land",
            "gravity": 9.807
          }
        ]
    }

Response: 
{
    "used_fuel": 51898
}