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

  alias Outlook.Articles

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

      <.simple_form
        :let={f}
        for={@changeset}
        id="article-form"
        phx-target={@myself}
        phx-change="validate"
        phx-submit="save"
      >
        <.input field={{f, :author_id}} type="hidden" />
        <.input field={{f, :title}} type="text" label="title" />
        <.input field={{f, :url}} type="text" label="url" />
        <.input field={{f, :language}} type="select" label="language"
            options={Application.get_env(:outlook,:deepl)[:source_langs]} />
        <.input field={{f, :date}} type="datetime-local" label="date" />
        <:actions>
          <.button phx-disable-with="Saving...">Save Article</.button>
        </:actions>
      </.simple_form>
    </div>
    """
  end

  @impl true
  def update(%{article: article} = assigns, socket) do
    changeset = Articles.change_article(article)

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

  @impl true
  def handle_event("validate", %{"article" => article_params}, socket) do
    changeset =
      socket.assigns.article
      |> Articles.change_article(article_params)
      |> Map.put(:action, :validate)

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

  def handle_event("save", %{"article" => article_params}, socket) do
    save_article(socket, socket.assigns.action, article_params |> put_internal_tree(socket.assigns))
  end

  defp put_internal_tree(article_params, %{internal_tree: internal_tree} = _) do
    article_params
    |> Map.put("content", internal_tree)
  end
  defp put_internal_tree(article_params, _), do: article_params

  defp save_article(socket, :edit, article_params) do
    case Articles.update_article(socket.assigns.article, article_params) do
      {:ok, _article} ->
        {:noreply,
         socket
         |> put_flash(:info, "Article updated successfully")
         |> push_navigate(to: socket.assigns.navigate)}

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

  defp save_article(socket, :new, article_params) do
    case Articles.create_article(article_params) do
      {:ok, _article} ->
        {:noreply,
         socket
         |> put_flash(:info, "Article created successfully")
         |> push_navigate(to: socket.assigns.navigate)}

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