feat: expose CRUD, onboarding, pubsub via web

lib/localiser/web/user_socket.ex

@@ -0,0 +1,26 @@
+defmodule Localiser.Web.UserSocket do
+  use Phoenix.Socket
+
+  channel "particles:*",     Localiser.Web.Channels.ParticlesChannel
+  channel "rooms:occupancy", Localiser.Web.Channels.RoomChannel
+  channel "sensors",         Localiser.Web.Channels.SensorsChannel
+
+  @impl true
+  def connect(%{"token" => token}, socket, _connect_info) do
+    case Localiser.Web.Token.verify_token(token) do
+      {:ok, %{"sub" => user_id}} ->
+        case Localiser.Domain.Users.get_user(user_id) do
+          {:ok, user} -> {:ok, assign(socket, :current_user, user)}
+          _           -> :error
+        end
+
+      {:error, _} ->
+        :error
+    end
+  end
+
+  def connect(_params, _socket, _connect_info), do: :error
+
+  @impl true
+  def id(socket), do: "user_socket:#{socket.assigns.current_user.id}"
+end