defmodule OutlookWeb.TranslationLive.FormComponent do
  use OutlookWeb, :live_component

  alias Outlook.{Translations,InternalTree}
  alias Outlook.InternalTree.TranslationUnit

  @impl true
  def render(assigns) do
    ~H"""
    <div class="flex">
      <div>
        <.header>
          <%= @title %>
          <:subtitle>Use this form to manage translation records in your database.</:subtitle>
        </.header>

        <.simple_form
          :let={f}
          for={@changeset}
          id="translation-form"
          phx-target={@myself}
          phx-change="validate"
          phx-submit="save"
        >
          <.input field={{f, :article_id}} type="hidden" />
          <.input field={{f, :lang}} type="select" label="lang"
              options={Application.get_env(:outlook,:deepl)[:target_langs]} />
          <.input field={{f, :title}} type="text" label="title" />
          <.input field={{f, :teaser}} type="textarea" label="teaser" class="h-28" />
          <%!-- <.input field={{f, :content}} type="text" label="content" /> --%>
          <.input field={{f, :date}} type="datetime-local" label="date" />
          <.input field={{f, :public}} type="checkbox" label="public" />
          <.input field={{f, :unauthorized}} type="checkbox" label="unauthorized" />
          <:actions>
            <.button phx-disable-with="Saving...">Save Translation</.button>
          </:actions>
        </.simple_form>
        <.tunit_editor current_tunit={@current_tunit} target={@myself} />
    </div>
      <div class="article">
        <%= InternalTree.render_html_preview(@translation.article.content, @myself) |> raw %>
      </div>
    </div>
    """
  end

  @impl true
  def update(%{translation: translation} = assigns, socket) do
    changeset = Translations.change_translation(translation)

    {:ok,
     socket
     |> assign(assigns)
     |> assign(:changeset, changeset)}
  end

  @impl true
  def handle_event("validate", %{"translation" => translation_params}, socket) do
    changeset =
      socket.assigns.translation
      |> Translations.change_translation(translation_params)
      |> Map.put(:action, :validate)

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

  def handle_event("save", %{"translation" => translation_params}, socket) do
    socket = socket
    |> update_translation_with_current_tunit()
    translation_params = translation_params
    |> Map.put("content", socket.assigns.translation_content)
    save_translation(socket, socket.assigns.action, translation_params)
  end

  def handle_event("tunit_status", %{"status" => status}, socket) do
    tunit = %TranslationUnit{socket.assigns.current_tunit | status: String.to_atom(status)}
    {:noreply, socket |> assign(:current_tunit, tunit)}
  end

  def handle_event("select_current_tunit", %{"uuid" => uuid}, socket) do
    {:noreply,
      socket
      |> update_translation_with_current_tunit
      |> assign(:current_tunit, socket.assigns.translation_content[uuid])}
  end

  def handle_event("update_current_tunit", %{"content" => content}, socket) do
    tunit = %TranslationUnit{socket.assigns.current_tunit | content: content}
    {:noreply, socket |> assign(:current_tunit, tunit)}
  end

  defp update_translation_with_current_tunit(socket) do
    translation_content = if socket.assigns.current_tunit do
        socket.assigns.translation_content
        |> Map.put(socket.assigns.current_tunit.uuid, socket.assigns.current_tunit)
      else
        socket.assigns.translation_content
      end
    socket
    |> assign(:translation_content, translation_content)
  end

  defp save_translation(socket, :edit, translation_params) do
    case Translations.update_translation(socket.assigns.translation, translation_params) do
      {:ok, _translation} ->
        {:noreply,
         socket
         |> put_flash(:info, "Translation updated successfully")
         |> push_navigate(to: socket.assigns.navigate)}

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

  defp save_translation(socket, :new, translation_params) do
    case Translations.create_translation(translation_params) do
      {:ok, _translation} ->
        {:noreply,
         socket
         |> put_flash(:info, "Translation created successfully")
         |> push_navigate(to: socket.assigns.navigate)}

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