feat: dynamically manage floors/rooms/tags

lib/localiser/domain/rooms.ex

@@ -3,6 +3,7 @@ defmodule Localiser.Domain.Rooms do
 
   alias Localiser.Repo
   alias Localiser.Domain.Schema.Room
+  alias Localiser.Domain.Schema.Sensor
 
   def list_rooms do
     Repo.all(Room)
@@ -17,18 +18,41 @@ defmodule Localiser.Domain.Rooms do
   def get_room!(id), do: Repo.get!(Room, id)
 
   def create_room(attrs) do
-    %Room{}
-    |> Room.changeset(attrs)
-    |> Repo.insert()
+    case %Room{} |> Room.changeset(attrs) |> Repo.insert() do
+      {:ok, room} ->
+        Phoenix.PubSub.broadcast(Localiser.PubSub, "rooms", {:room_created, room})
+        {:ok, room}
+
+      error ->
+        error
+    end
   end
 
   def update_room(%Room{} = room, attrs) do
-    room
-    |> Room.changeset(attrs)
-    |> Repo.update()
+    case room |> Room.changeset(attrs) |> Repo.update() do
+      {:ok, room} ->
+        Phoenix.PubSub.broadcast(Localiser.PubSub, "rooms", {:room_updated, room})
+        {:ok, room}
+
+      error ->
+        error
+    end
   end
 
   def delete_room(%Room{} = room) do
-    Repo.delete(room)
+    sensors = Repo.all(from s in Sensor, where: s.room_id == ^room.id)
+
+    case Repo.delete(room) do
+      {:ok, deleted} ->
+        Enum.each(sensors, fn s ->
+          Phoenix.PubSub.broadcast(Localiser.PubSub, "sensors", {:sensor_unenrolled, s.sensor_id})
+        end)
+
+        Phoenix.PubSub.broadcast(Localiser.PubSub, "rooms", {:room_deleted, deleted.id, deleted.floor_id})
+        {:ok, deleted}
+
+      error ->
+        error
+    end
   end
 end