Initial upload

elixir/remote-control-car/lib/remote_control_car.ex

@@ -0,0 +1,25 @@
+defmodule RemoteControlCar do
+  @enforce_keys [:nickname]
+  defstruct [:nickname, battery_percentage: 100, distance_driven_in_meters: 0]
+
+  def new(nickname \\ "none") do
+    %RemoteControlCar{nickname: nickname}
+  end
+
+  def display_distance(%RemoteControlCar{} = remote_car) do
+    "#{remote_car.distance_driven_in_meters} meters"
+  end
+
+  def display_battery(%RemoteControlCar{} = car) do
+    if car.battery_percentage > 0 do
+      "Battery at #{car.battery_percentage}%"
+    else
+      "Battery empty"
+    end
+  end
+
+  def drive(%RemoteControlCar{} = remote_car) when remote_car.battery_percentage > 0 do
+    %{remote_car | battery_percentage: remote_car.battery_percentage - 1, distance_driven_in_meters: remote_car.distance_driven_in_meters + 20}
+  end
+  def drive(%RemoteControlCar{} = car), do: car
+end