/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
 *
 * Copyright © 2020 Endless Mobile, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Authors:
 *  - Philip Withnall <withnall@endlessm.com>
 */

#include "config.h"

#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n-lib.h>
#include <gio/gio.h>
#include <libmalcontent/session-history.h>

#include "libmalcontent/session-history-private.h"


/* struct _MctSessionHistory is defined in session-history-private.h */

G_DEFINE_BOXED_TYPE (MctSessionHistory, mct_session_history,
                     mct_session_history_ref, mct_session_history_unref)

/**
 * mct_session_history_ref:
 * @history: (transfer none): an #MctSessionHistory
 *
 * Increment the reference count of @history, and return the same pointer to it.
 *
 * Returns: (transfer full): the same pointer as @history
 * Since: 0.5.0
 */
MctSessionHistory *
mct_session_history_ref (MctSessionHistory *history)
{
  g_return_val_if_fail (history != NULL, NULL);
  g_return_val_if_fail (history->ref_count >= 1, NULL);
  g_return_val_if_fail (history->ref_count <= G_MAXINT - 1, NULL);

  history->ref_count++;
  return history;
}

/**
 * mct_session_history_unref:
 * @history: (transfer full): an #MctSessionHistory
 *
 * Decrement the reference count of @history. If the reference count reaches
 * zero, free the @history and all its resources.
 *
 * Since: 0.5.0
 */
void
mct_session_history_unref (MctSessionHistory *history)
{
  g_return_if_fail (history != NULL);
  g_return_if_fail (history->ref_count >= 1);

  history->ref_count--;

  if (history->ref_count <= 0)
    {
      g_clear_pointer (&history->start, g_date_time_unref);
      g_clear_pointer (&history->end, g_date_time_unref);
      g_free (history);
    }
}

/**
 * mct_session_history_get_user_id:
 * @history: an #MctSessionHistory
 *
 * Get the user ID of the user this #MctSessionHistory is for.
 *
 * Returns: user ID of the relevant user
 * Since: 0.5.0
 */
uid_t
mct_session_history_get_user_id (MctSessionHistory *history)
{
  g_return_val_if_fail (history != NULL, (uid_t) -1);
  g_return_val_if_fail (history->ref_count >= 1, (uid_t) -1);

  return history->user_id;
}