/**************************************************************************
**
** Copyright (c) 2014 Nicolas Arnaud-Cormos
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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****************************************************************************/

#include "actionmacrohandler.h"
#include "macroevent.h"
#include "macro.h"

#include <coreplugin/actionmanager/actionmanager.h>
#include <coreplugin/actionmanager/command.h>
#include <coreplugin/coreconstants.h>
#include <coreplugin/icontext.h>
#include <coreplugin/icore.h>
#include <coreplugin/id.h>

#include <texteditor/texteditorconstants.h>

#include <QAction>
#include <QEvent>
#include <QObject>
#include <QShortcut>
#include <QSignalMapper>
#include <QStringList>
#include <QtAlgorithms>

using namespace Core;

namespace Macros {
namespace Internal {

static const char EVENTNAME[] = "Action";
static quint8 ACTIONNAME = 0;

ActionMacroHandler::ActionMacroHandler():
    m_mapper(new QSignalMapper(this))
{
    connect(m_mapper, SIGNAL(mapped(QString)),
            this, SLOT(addActionEvent(QString)));

    connect(ActionManager::instance(), SIGNAL(commandAdded(QString)),
            this, SLOT(addCommand(QString)));

    // Register all existing scriptable actions
    QList<Command *> commands = ActionManager::commands();
    foreach (Command *command, commands) {
        if (command->isScriptable())
            registerCommand(command->id());
    }
}

bool ActionMacroHandler::canExecuteEvent(const MacroEvent &macroEvent)
{
    return macroEvent.id() == EVENTNAME;
}

bool ActionMacroHandler::executeEvent(const MacroEvent &macroEvent)
{
    QAction *action = ActionManager::command(Id::fromSetting(macroEvent.value(ACTIONNAME)))->action();
    if (!action)
        return false;

    action->trigger();
    return true;
}

void ActionMacroHandler::addActionEvent(const QString &name)
{
    if (!isRecording())
        return;

    const Id id = Id::fromString(name);
    const Command *command = ActionManager::command(id);
    if (command->isScriptable(command->context())) {
        MacroEvent e;
        e.setId(EVENTNAME);
        e.setValue(ACTIONNAME, id.toSetting());
        addMacroEvent(e);
    }
}

void ActionMacroHandler::registerCommand(Id id)
{
    if (!m_commandIds.contains(id)) {
        m_commandIds.insert(id);
        const Command *command = ActionManager::command(id);
        if (QAction *action = command->action()) {
            connect(action, SIGNAL(triggered()), m_mapper, SLOT(map()));
            m_mapper->setMapping(action, id.toString());
            return;
        }
        if (QShortcut *shortcut = command->shortcut()) {
            connect(shortcut, SIGNAL(activated()), m_mapper, SLOT(map()));
            m_mapper->setMapping(shortcut, id.toString());
        }
    }
}

void ActionMacroHandler::addCommand(const QString &name)
{
    const Id id = Id::fromString(name);
    const Command *command = ActionManager::command(id);
    if (command->isScriptable())
        registerCommand(id);
}

} // namespace Internal
} // namespace Macros
