defmodule MvWeb.MemberLive.Form do
  use MvWeb, :live_view

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash}>
      <.header>
        {@page_title}
        <:subtitle>Use this form to manage member records in your database.</:subtitle>
      </.header>

      <.form for={@form} id="member-form" phx-change="validate" phx-submit="save">
        <.input field={@form[:properties]} type="select" multiple label="Properties" options={[]} />
        <.input field={@form[:first_name]} type="text" label="First name" /><.input
          field={@form[:last_name]}
          type="text"
          label="Last name"
        /><.input field={@form[:email]} type="text" label="Email" /><.input
          field={@form[:birth_date]}
          type="date"
          label="Birth date"
        /><.input field={@form[:paid]} type="checkbox" label="Paid" /><.input
          field={@form[:phone_number]}
          type="text"
          label="Phone number"
        /><.input field={@form[:join_date]} type="date" label="Join date" /><.input
          field={@form[:exit_date]}
          type="date"
          label="Exit date"
        /><.input field={@form[:notes]} type="text" label="Notes" /><.input
          field={@form[:city]}
          type="text"
          label="City"
        /><.input field={@form[:street]} type="text" label="Street" /><.input
          field={@form[:house_number]}
          type="text"
          label="House number"
        /><.input field={@form[:postal_code]} type="text" label="Postal code" />

        <.button phx-disable-with="Saving..." variant="primary">Save Member</.button>
        <.button navigate={return_path(@return_to, @member)}>Cancel</.button>
      </.form>
    </Layouts.app>
    """
  end

  @impl true
  def mount(params, _session, socket) do
    member =
      case params["id"] do
        nil -> nil
        id -> Ash.get!(Mv.Membership.Member, id)
      end

    action = if is_nil(member), do: "New", else: "Edit"
    page_title = action <> " " <> "Member"

    {:ok,
     socket
     |> assign(:return_to, return_to(params["return_to"]))
     |> assign(member: member)
     |> assign(:page_title, page_title)
     |> assign_form()}
  end

  defp return_to("show"), do: "show"
  defp return_to(_), do: "index"

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

  def handle_event("save", %{"member" => member_params}, socket) do
    case AshPhoenix.Form.submit(socket.assigns.form, params: member_params) do
      {:ok, member} ->
        notify_parent({:saved, member})

        socket =
          socket
          |> put_flash(:info, "Member #{socket.assigns.form.source.type}d successfully")
          |> push_navigate(to: return_path(socket.assigns.return_to, member))

        {:noreply, socket}

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

  defp notify_parent(msg), do: send(self(), {__MODULE__, msg})

  defp assign_form(%{assigns: %{member: member}} = socket) do
    form =
      if member do
        AshPhoenix.Form.for_update(member, :update_member, as: "member")
      else
        AshPhoenix.Form.for_create(Mv.Membership.Member, :create_member, as: "member")
      end

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

  defp return_path("index", _member), do: ~p"/members"
  defp return_path("show", member), do: ~p"/members/#{member.id}"
end