init: inital commit

lib/localiser/localisation/room/supervisor.ex

@@ -0,0 +1,41 @@
+defmodule Localiser.Localisation.Room.Supervisor do
+  use DynamicSupervisor
+
+  alias Localiser.Domain.Rooms
+  alias Localiser.Localisation.Room.Server
+
+  def start_link(floor) do
+    case DynamicSupervisor.start_link(__MODULE__, :ok, name: via(floor.id)) do
+      {:ok, pid} ->
+        seed_rooms(floor.id)
+        {:ok, pid}
+
+      error ->
+        error
+    end
+  end
+
+  def via(floor_id) do
+    {:via, Registry, {Localiser.Registry, {:room_supervisor, floor_id}}}
+  end
+
+  @impl true
+  def init(:ok) do
+    DynamicSupervisor.init(strategy: :one_for_one)
+  end
+
+  def start_room_server(floor_id, room) do
+    child_spec = %{
+      id: {Server, room.id},
+      start: {Server, :start_link, [room]},
+      restart: :transient
+    }
+
+    DynamicSupervisor.start_child(via(floor_id), child_spec)
+  end
+
+  defp seed_rooms(floor_id) do
+    Rooms.list_rooms_for_floor(floor_id)
+    |> Enum.each(&start_room_server(floor_id, &1))
+  end
+end