defmodule ToweropsWeb.SiteLive.Form do
  @moduledoc false
  use ToweropsWeb, :live_view

  alias Towerops.Sites
  alias Towerops.Sites.Site

  @impl true
  def mount(_params, _session, socket) do
    organization = socket.assigns.current_organization

    {:ok,
     socket
     |> assign(:organization, organization)
     |> assign(:available_parent_sites, Sites.list_organization_sites(organization.id))}
  end

  @impl true
  def handle_params(params, _url, socket) do
    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
  end

  defp apply_action(socket, :new, _params) do
    changeset = Sites.change_site(%Site{organization_id: socket.assigns.organization.id})

    socket
    |> assign(:page_title, "New Site")
    |> assign(:site, %Site{})
    |> assign(:form, to_form(changeset))
  end

  defp apply_action(socket, :edit, %{"id" => id}) do
    site = Sites.get_organization_site!(socket.assigns.organization.id, id)
    changeset = Sites.change_site(site)

    # Filter out the current site and its descendants from parent options
    available_parent_sites =
      Enum.reject(socket.assigns.available_parent_sites, fn s -> s.id == site.id end)

    socket
    |> assign(:page_title, "Edit Site")
    |> assign(:site, site)
    |> assign(:form, to_form(changeset))
    |> assign(:available_parent_sites, available_parent_sites)
  end

  @impl true
  def handle_event("validate", %{"site" => site_params}, socket) do
    changeset =
      socket.assigns.site
      |> Sites.change_site(site_params)
      |> Map.put(:action, :validate)

    {:noreply, assign(socket, :form, to_form(changeset))}
  end

  @impl true
  def handle_event("save", %{"site" => site_params}, socket) do
    save_site(socket, socket.assigns.live_action, site_params)
  end

  defp save_site(socket, :new, site_params) do
    site_params = Map.put(site_params, "organization_id", socket.assigns.organization.id)

    case Sites.create_site(site_params) do
      {:ok, _site} ->
        {:noreply,
         socket
         |> put_flash(:info, "Site created successfully")
         |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/sites")}

      {:error, %Ecto.Changeset{} = changeset} ->
        {:noreply, assign(socket, :form, to_form(changeset))}
    end
  end

  defp save_site(socket, :edit, site_params) do
    case Sites.update_site(socket.assigns.site, site_params) do
      {:ok, _site} ->
        {:noreply,
         socket
         |> put_flash(:info, "Site updated successfully")
         |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/sites")}

      {:error, %Ecto.Changeset{} = changeset} ->
        {:noreply, assign(socket, :form, to_form(changeset))}
    end
  end
end