/***************************************************************************
 *   Copyright (C) 2010-2017 by Ilya Kotov                                 *
 *   forkotov02@hotmail.ru                                                 *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#include <QSettings>
#include <QAction>
#include <QIcon>
#include <QFile>
#include <QApplication>
#include <QStyle>
#include <QWidgetAction>
#include <qmmp/qmmp.h>
#include "actionmanager.h"

ActionManager *ActionManager::m_instance = 0;

ActionManager::ActionManager(QObject *parent) :
    QObject(parent)
{
    m_instance = this;
    m_settings = new QSettings(Qmmp::configFile(), QSettings::IniFormat);
    m_settings->beginGroup("SimpleUiShortcuts");
    //playback
    m_actions[PLAY] = createAction(tr("&Play"), "play", tr("X"), "media-playback-start");
    m_actions[PAUSE] = createAction(tr("&Pause"), "pause", tr("C"), "media-playback-pause");
    m_actions[STOP] = createAction(tr("&Stop"), "stop", tr("V"), "media-playback-stop");
    m_actions[PREVIOUS] = createAction(tr("&Previous"), "previous", tr("Z"), "media-skip-backward");
    m_actions[NEXT] = createAction(tr("&Next"), "next", tr("B"), "media-skip-forward");
    m_actions[PLAY_PAUSE] = createAction(tr("&Play/Pause"), "play_pause", tr("Space"));
    m_actions[JUMP] = createAction(tr("&Jump to Track"), "jump", tr("J"), "go-up");
    m_actions[EJECT] = createAction(tr("&Play Files"), "eject", tr("E"), "media-eject");
    m_actions[RECORD] = createAction2(tr("&Record"), "record", "", "media-record");

    m_actions[REPEAT_ALL] = createAction2(tr("&Repeat Playlist"), "repeate_playlist", tr("R"),
                                          "media-playlist-repeat");
    m_actions[REPEAT_TRACK] = createAction2(tr("&Repeat Track"), "repeate_track", tr("Ctrl+R"));
    m_actions[SHUFFLE] = createAction2(tr("&Shuffle"), "shuffle", tr("S"), "media-playlist-shuffle");
    m_actions[NO_PL_ADVANCE] = createAction2(tr("&No Playlist Advance"), "no_playlist_advance",
                                            tr("Ctrl+N"));
    m_actions[STOP_AFTER_SELECTED] = createAction(tr("&Stop After Selected"), "stop_after_selected",
                                                  tr("Ctrl+S"));
    m_actions[CLEAR_QUEUE] = createAction(tr("&Clear Queue"), "clear_queue", tr("Alt+Q"));
    //view
    m_actions[WM_ALLWAYS_ON_TOP] = createAction2(tr("Always on Top"), "always_on_top", "");
    m_actions[WM_STICKY] = createAction2(tr("Put on All Workspaces"), "sticky", "");
    m_actions[UI_ANALYZER] = 0; //external action
    m_actions[UI_FILEBROWSER] = 0; //external action
    m_actions[UI_COVER] = 0; //external action
    m_actions[UI_PLAYLISTBROWSER] = 0; //external action
    m_actions[UI_SHOW_TABS] = createAction2(tr("Show Tabs"), "show_tabs", "");
    m_actions[UI_SHOW_TITLEBARS] = createAction2(tr("Show Title Bars"), "show_titlebars", "");
    m_actions[UI_BLOCK_TOOLBARS] = createAction2(tr("Block Toolbars"), "block_toolbars", "");
    //volume
    m_actions[VOL_ENC] = createAction(tr("Volume &+"), "vol_enc", tr("0"));
    m_actions[VOL_DEC] = createAction(tr("Volume &-"), "vol_dec", tr("9"));
    m_actions[VOL_MUTE] = createAction2(tr("&Mute"), "vol_mute", tr("M"));
    //playlist
    m_actions[PL_ADD_FILE] = createAction(tr("&Add File"), "add_file", tr("F"), "audio-x-generic");
    m_actions[PL_ADD_DIRECTORY] = createAction(tr("&Add Directory"), "add_dir", tr("D"), "folder");
    m_actions[PL_ADD_URL] = createAction(tr("&Add Url"), "add_url", tr("U"), "network-server");
    m_actions[PL_REMOVE_SELECTED] = createAction(tr("&Remove Selected"), "remove_selected",
                                                 tr("Del"), "edit-delete");
    m_actions[PL_REMOVE_ALL] = createAction(tr("&Remove All"), "remove_all", "", "edit-clear");
    m_actions[PL_REMOVE_UNSELECTED] = createAction(tr("&Remove Unselected"), "remove_unselected",
                                                   "", "edit-delete");
    m_actions[PL_REMOVE_INVALID] = createAction(tr("Remove unavailable files"), "remove_invalid",
                                                "", "dialog-error");
    m_actions[PL_REMOVE_DUPLICATES] = createAction(tr("Remove duplicates"), "remove_duplicates", "");
    m_actions[PL_REFRESH] = createAction(tr("Refresh"), "refresh", "F5", "view-refresh");
    m_actions[PL_ENQUEUE] = createAction(tr("&Queue Toggle"), "enqueue", tr("Q"));
    m_actions[PL_INVERT_SELECTION] = createAction(tr("Invert Selection"), "invert_selection", "");
    m_actions[PL_CLEAR_SELECTION] = createAction(tr("&Select None"), "clear_selection", "");
    m_actions[PL_SELECT_ALL] = createAction(tr("&Select All"), "select_all",
                                            tr("Ctrl+A"), "edit-select-all");
    m_actions[PL_SHOW_INFO] = createAction(tr("&View Track Details"), "show_info", tr("Alt+I"),
                                           "dialog-information");
    m_actions[PL_NEW] = createAction(tr("&New List"), "new_pl", tr("Ctrl+T"), "document-new");
    m_actions[PL_CLOSE] = createAction(tr("&Delete List"), "close_pl", tr("Ctrl+W"), "window-close");
    m_actions[PL_LOAD] = createAction(tr("&Load List"), "load_pl", tr("O"), "document-open");
    m_actions[PL_SAVE] = createAction(tr("&Save List"), "save_pl", tr("Shift+S"), "document-save-as");
    m_actions[PL_RENAME] = createAction(tr("&Rename List"), "pl_rename", tr("F2"));

    m_actions[PL_SELECT_NEXT] = createAction(tr("&Select Next Playlist"), "next_pl",
                                             tr("Ctrl+PgDown"), "go-next");
    m_actions[PL_SELECT_PREVIOUS] = createAction(tr("&Select Previous Playlist"), "prev_pl",
                                                 tr("Ctrl+PgUp"), "go-previous");
    m_actions[PL_GROUP_TRACKS] = createAction2(tr("&Group Tracks"), "group_tracks", tr("Ctrl+G"));
    m_actions[PL_SHOW_HEADER] = createAction2(tr("&Show Column Headers"), "show_header", tr("Ctrl+H"));
    //other
    m_actions[EQUALIZER] = createAction(tr("&Equalizer"), "equalizer", tr("Ctrl+E"));
    m_actions[SETTINGS] = createAction(tr("&Settings"), "show_settings", tr("Ctrl+P"), "configure");
    m_actions[ABOUT_UI] = createAction(tr("&About Ui"), "about_ui", "");
    m_actions[ABOUT] = createAction(tr("&About"), "about", "");
    m_actions[ABOUT_QT] = createAction(tr("&About Qt"), "about_qt", "");
    m_actions[QUIT] = createAction(tr("&Exit"), "exit", tr("Ctrl+Q"), "application-exit");
    m_settings->endGroup();
    readStates();
    delete m_settings;
    m_settings = 0;
    m_actions[ABOUT]->setIcon(qApp->windowIcon());
}

ActionManager::~ActionManager()
{
    saveStates();
    m_instance = 0;
}

QAction *ActionManager::action(int type)
{
    return m_actions[type];
}

QAction *ActionManager::use(int type, const QObject *receiver, const char *member)
{
    QAction *act = m_actions[type];
    connect(act,SIGNAL(triggered(bool)), receiver, member);
    return act;
}

QList<QAction *> ActionManager::actions()
{
    return m_actions.values();
}

ActionManager* ActionManager::instance()
{
    return m_instance;
}

QAction *ActionManager::createAction(QString name, QString confKey, QString key, QString iconName)
{
    QAction *action = new QAction(name, this);
    action->setShortcut(m_settings->value(confKey, key).toString());
    action->setObjectName(confKey);
    action->setProperty("defaultShortcut", key);
    if(iconName.isEmpty())
        return action;
    if(QFile::exists(iconName))
        action->setIcon(QIcon(iconName));
    else if(QIcon::hasThemeIcon(iconName))
        action->setIcon(QIcon::fromTheme(iconName));
    else if(QFile::exists(QString(":/qsui/")+iconName+".png"))
        action->setIcon(QIcon(QString(":/qsui/")+iconName+".png"));
    return action;
}

QAction *ActionManager::createAction2(QString name, QString confKey, QString key, QString iconName)
{
    QAction *action = createAction(name, confKey, key);
    action->setCheckable(true);
    action->setIconVisibleInMenu(false);
    if(iconName.isEmpty())
        return action;
    if(QFile::exists(iconName))
        action->setIcon(QIcon(iconName));
    else if(QIcon::hasThemeIcon(iconName))
        action->setIcon(QIcon::fromTheme(iconName));
    else if(QFile::exists(QString(":/qsui/")+iconName+".png"))
        action->setIcon(QIcon(QString(":/qsui/")+iconName+".png"));
    return action;
}

void ActionManager::readStates()
{
    m_settings->beginGroup("Simple");
    m_actions[PL_SHOW_HEADER]->setChecked(m_settings->value("pl_show_header", true).toBool());
    m_settings->endGroup();
}

void ActionManager::saveStates()
{
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    settings.beginGroup("Simple");
    settings.setValue("pl_show_header", m_actions[PL_SHOW_HEADER]->isChecked());
    settings.endGroup();
}

void ActionManager::saveActions()
{
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    foreach(QAction *action, m_actions.values())
    {
        settings.setValue(QString("SimpleUiShortcuts/")+action->objectName(), action->shortcut());
    }
}

void ActionManager::resetShortcuts()
{
    foreach (QAction *action, m_actions.values())
    {
        action->setShortcut(action->property("defaultShortcut").toString());
    }
}

void ActionManager::registerAction(int id, QAction *action, QString confKey, QString key)
{
    if(m_actions.value(id))
        qFatal("ActionManager: invalid action id");

    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    settings.beginGroup("SimpleUiShortcuts");
    action->setShortcut(settings.value(confKey, key).toString());
    action->setProperty("defaultShortcut", key);
    action->setObjectName(confKey);
    m_actions[id] = action;
    settings.endGroup();
}

void ActionManager::registerWidget(int id, QWidget *w, QString text, QString name)
{
    if(m_actions.value(id))
        qFatal("ActionManager: invalid action id");
    QWidgetAction *action = new QWidgetAction(this);
    action->setText(text);
    action->setObjectName(name);
    action->setDefaultWidget(w);
    m_actions[id] = action;
}

QToolBar *ActionManager::createToolBar(ActionManager::ToolBarInfo info, QWidget *parent)
{
    QToolBar *toolBar = new QToolBar(info.title, parent);
    updateToolBar(toolBar, info);
    toolBar->setProperty("uid", info.uid);
    toolBar->setIconSize(info.iconSize);
    toolBar->setObjectName("Toolbar" + info.uid);
    return toolBar;
}

void ActionManager::updateToolBar(QToolBar *toolBar, ActionManager::ToolBarInfo info)
{
    toolBar->clear();
    toolBar->setIconSize(info.iconSize);
    foreach (QString name, info.actionNames)
    {
        if(name == "separator")
        {
            toolBar->addSeparator()->setObjectName("separator");
            continue;
        }
        QAction *action = findChild<QAction *>(name);
        if(action)
        {
            action->setVisible(true);
            toolBar->addAction(action);
        }
    }
}

ActionManager::ToolBarInfo ActionManager::defaultToolBar() const
{
    QList <Type> idList;
    idList << PL_ADD_FILE << PL_ADD_DIRECTORY << PREVIOUS << PLAY << PAUSE << STOP << NEXT << EJECT;
    idList << UI_SEPARATOR << UI_POS_SLIDER << UI_SEPARATOR << UI_VOL_SLIDER << VOL_MUTE;
    QStringList names;
    foreach (Type id, idList)
    {
        if(id == UI_SEPARATOR)
        {
            names << "separator";
            continue;
        }
        names << m_actions.value(id)->objectName();
    }
    ActionManager::ToolBarInfo info;
    info.title = tr("Toolbar");
    info.actionNames = names;
    info.uid = "{68363a0b-f2cd-462a-87ca-e3089db21561}";
    return info;
}

QList<ActionManager::ToolBarInfo> ActionManager::readToolBarSettings() const
{
    QList<ToolBarInfo> list;
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    int iconSize = settings.value("Simple/toolbar_icon_size", -1).toInt();
    if(iconSize <= 0)
        iconSize = qApp->style()->pixelMetric(QStyle::PM_ToolBarIconSize);
    int size = settings.beginReadArray("SimpleUiToolbars");
    for(int i = 0; i < size; ++i)
    {
        ToolBarInfo info;
        settings.setArrayIndex(i);
        info.title = settings.value("title").toString();
        info.actionNames = settings.value("actions").toStringList();
        info.uid = settings.value("uid").toString();
        info.iconSize = QSize(iconSize, iconSize);
        list.append(info);
    }
    settings.endArray();
    if(list.isEmpty())
    {
        list << defaultToolBar();
        list.last().iconSize = QSize(iconSize, iconSize);
    }
    return list;
}

void ActionManager::writeToolBarSettings(QList<ActionManager::ToolBarInfo> l)
{
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    settings.beginWriteArray("SimpleUiToolbars");
    for(int i = 0; i < l.size(); ++i)
    {
        settings.setArrayIndex(i);
        settings.setValue("title", l[i].title);
        settings.setValue("actions", l[i].actionNames);
        settings.setValue("uid", l[i].uid);
    }
    settings.endArray();
}