defmodule MvWeb.GlobalSettingsLive do
  @moduledoc """
  LiveView for managing global application settings (Vereinsdaten).

  ## Features
  - Edit the association/club name
  - Real-time form validation
  - Success/error feedback

  ## Settings
  - `club_name` - The name of the association/club (required)

  ## Events
  - `validate` - Real-time form validation
  - `save` - Save settings changes

  ## Note
  Settings is a singleton resource - there is only one settings record.
  The club_name can also be set via the `ASSOCIATION_NAME` environment variable.
  """
  use MvWeb, :live_view

  alias Mv.Membership

  @impl true
  def mount(_params, _session, socket) do
    {:ok, settings} = Membership.get_settings()

    {:ok,
     socket
     |> assign(:page_title, gettext("Club Settings"))
     |> assign(:settings, settings)
     |> assign_form()}
  end

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash} current_user={@current_user}>
      <.header>
        {gettext("Club Settings")}
        <:subtitle>
          {gettext("Manage global settings for the association.")}
        </:subtitle>
      </.header>

      <.form for={@form} id="settings-form" phx-change="validate" phx-submit="save">
        <.input
          field={@form[:club_name]}
          type="text"
          label={gettext("Association Name")}
          required
        />

        <.button phx-disable-with={gettext("Saving...")} variant="primary">
          {gettext("Save Settings")}
        </.button>
      </.form>
    </Layouts.app>
    """
  end

  @impl true
  def handle_event("validate", %{"setting" => setting_params}, socket) do
    {:noreply,
     assign(socket, form: AshPhoenix.Form.validate(socket.assigns.form, setting_params))}
  end

  def handle_event("save", %{"setting" => setting_params}, socket) do
    case AshPhoenix.Form.submit(socket.assigns.form, params: setting_params) do
      {:ok, updated_settings} ->
        socket =
          socket
          |> assign(:settings, updated_settings)
          |> put_flash(:info, gettext("Settings updated successfully"))
          |> assign_form()

        {:noreply, socket}

      {:error, form} ->
        {:noreply, assign(socket, form: form)}
    end
  end

  defp assign_form(%{assigns: %{settings: settings}} = socket) do
    form =
      AshPhoenix.Form.for_update(
        settings,
        :update,
        api: Membership,
        as: "setting",
        forms: [auto?: true]
      )

    assign(socket, form: to_form(form))
  end
end