feat: implementation of step 5 of the plan - still not fully done

lib/bds/desktop/shell_live/chat_editor.ex

@@ -0,0 +1,68 @@
+defmodule BDS.Desktop.ShellLive.ChatEditor do
+  @moduledoc false
+
+  use Phoenix.Component
+
+  alias BDS.{AI, Repo}
+  alias BDS.AI.ChatConversation
+  alias BDS.Desktop.ShellData
+
+  embed_templates "chat_editor_html/*"
+
+  def assign_socket(socket) do
+    assign(socket, :chat_editor, build(socket.assigns))
+  end
+
+  def update_input(socket, value, reload) do
+    %{id: conversation_id} = socket.assigns.current_tab
+
+    socket
+    |> assign(:chat_editor_inputs, Map.put(socket.assigns.chat_editor_inputs, conversation_id, to_string(value || "")))
+    |> reload.(socket.assigns.workbench)
+  end
+
+  def send_message(socket, reload, append_output) do
+    %{id: conversation_id} = socket.assigns.current_tab
+    message = socket.assigns.chat_editor_inputs |> Map.get(conversation_id, "") |> String.trim()
+
+    cond do
+      message == "" -> reload.(socket, socket.assigns.workbench)
+      socket.assigns.offline_mode ->
+        socket
+        |> append_output.(translated("Chat"), translated("Automatic AI actions stay gated by airplane mode."), nil, "info")
+        |> reload.(socket.assigns.workbench)
+
+      true ->
+        case AI.send_chat_message(conversation_id, message, project_id: socket.assigns.projects.active_project_id) do
+          {:ok, _result} ->
+            socket
+            |> assign(:chat_editor_inputs, Map.put(socket.assigns.chat_editor_inputs, conversation_id, ""))
+            |> reload.(socket.assigns.workbench)
+
+          {:error, reason} ->
+            socket
+            |> append_output.(translated("Chat"), inspect(reason), nil, "error")
+            |> reload.(socket.assigns.workbench)
+        end
+    end
+  end
+
+  def build(%{current_tab: %{type: :chat, id: conversation_id}} = assigns) do
+    case Repo.get(ChatConversation, conversation_id) do
+      nil -> nil
+      %ChatConversation{} = conversation ->
+        %{
+          id: conversation.id,
+          title: conversation.title || translated("New Chat"),
+          model: conversation.model,
+          input: Map.get(assigns.chat_editor_inputs, conversation.id, ""),
+          messages: AI.list_chat_messages(conversation.id),
+          offline?: Map.get(assigns, :offline_mode, true)
+        }
+    end
+  end
+
+  def build(_assigns), do: nil
+
+  def translated(text, bindings \\ %{}), do: ShellData.translate(text, bindings, Process.get(:bds_ui_locale))
+end