defmodule HaytniWeb.Recoverable.PasswordController do
  @moduledoc false

  use HaytniWeb, :controller
  use HaytniWeb.Helpers, Haytni.RecoverablePlugin
  import Haytni.Gettext

  defp render_new(conn, changeset = %Ecto.Changeset{}) do
    conn
    |> assign(:changeset, changeset)
    |> render("new.html")
  end

  # GET /password/new
  # To request a new key, sent by mail, in order to change its password
  def new(conn, _params, _module, config) do
    conn
    |> render_new(Haytni.RecoverablePlugin.recovering_changeset(config))
  end

  @spec recovery_token_sent_message() :: String.t
  def recovery_token_sent_message do
    if Application.get_env(:haytni, :mode) == :strict do
      dgettext("haytni", "If the provided informations match our database, you will shortly receive in your mailbox the instructions to allow you to reset your password.")
    else
      dgettext("haytni", "To reset your password we sent you an email containing a link you will need to follow.")
    end
    |> Haytni.Helpers.concat_spam_check_hint_message()
  end

  # POST /password
  # Send by email a new token to reset password
  def create(conn, %{"password" => password_params}, module, config) do
    case Haytni.RecoverablePlugin.send_reset_password_instructions(module, config, password_params) do
      {:ok, _user} ->
        conn
        |> HaytniWeb.Shared.render_message(module, recovery_token_sent_message())
      {:error, changeset = %Ecto.Changeset{}} ->
        render_new(conn, changeset)
    end
  end

  defp render_edit(conn, changeset = %Ecto.Changeset{}) do
    conn
    |> assign(:changeset, changeset)
    |> render("edit.html")
  end

  # GET /password/edit?reset_password_token=<reset_password_token>
  # Request a new password
  def edit(conn, params = %{"reset_password_token" => _reset_password_token}, module, _config) do
    conn
    |> render_edit(Haytni.Recoverable.PasswordChange.change_password(module, params))
  end

  @spec password_changed_message() :: String.t
  def password_changed_message do
    dgettext("haytni", "Your password has been successfully changed.")
  end

  # PATCH /password
  # Redefine the password of the targeted account
  def update(conn, %{"password" => password_params}, module, config) do
    case Haytni.RecoverablePlugin.recover(module, config, password_params) do
      {:ok, _user} ->
        conn
        |> HaytniWeb.Shared.next_step_link(HaytniWeb.Shared.session_path(conn, module), dgettext("haytni", "Password changed, continue to sign in"))
        |> HaytniWeb.Shared.render_message(module, password_changed_message())
      {:error, changeset = %Ecto.Changeset{}} ->
        render_edit(conn, changeset)
    end
  end
end