/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                         *
 *  Copyright (C) 2015 Simon Stuerz <simon.stuerz@guh.guru>                *
 *  Copyright (C) 2014 Michael Zanetti <michael_zanetti@gmx.net>           *
 *                                                                         *
 *  This file is part of guh.                                              *
 *                                                                         *
 *  Guh 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, version 2 of the License.                *
 *                                                                         *
 *  Guh 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 guh. If not, see <http://www.gnu.org/licenses/>.            *
 *                                                                         *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*!
  \class Device
  \brief A Device represents a installed and configured hardware device.

  \ingroup devices
  \inmodule libguh

  This class holds the values for configured devices. It is associated with a \{DeviceClass} which
  can be used to get more details about the device.

  \sa DeviceClass, DeviceDescriptor
*/

/*! \fn void Device::stateValueChanged(const QUuid &stateTypeId, const QVariant &value)
    This signal is emitted when the \l{State} with the given \a stateTypeId changed.
    The \a value parameter describes the new value of the State.
*/

#include "device.h"
#include "types/event.h"
#include "loggingcategories.h"

#include <QDebug>

/*! Construct an Device with the given \a pluginId, \a id, \a deviceClassId and \a parent. */
Device::Device(const PluginId &pluginId, const DeviceId &id, const DeviceClassId &deviceClassId, QObject *parent):
    QObject(parent),
    m_id(id),
    m_deviceClassId(deviceClassId),
    m_pluginId(pluginId),
    m_setupComplete(false)
{

}

/*! Construct an Device with the given \a pluginId, \a deviceClassId and \a parent. A new DeviceId will be created for this Device. */
Device::Device(const PluginId &pluginId, const DeviceClassId &deviceClassId, QObject *parent):
    QObject(parent),
    m_id(DeviceId::createDeviceId()),
    m_deviceClassId(deviceClassId),
    m_pluginId(pluginId),
    m_setupComplete(false)
{

}

void Device::setupCompleted()
{
    m_setupComplete = true;
}

/*! Returns the id of this Device. */
DeviceId Device::id() const
{
    return m_id;
}

/*! Returns the deviceClassId of the associated \l{DeviceClass}. */
DeviceClassId Device::deviceClassId() const
{
    return m_deviceClassId;
}

/*! Returns the id of the \l{DevicePlugin} this Device is managed by. */
PluginId Device::pluginId() const
{
    return m_pluginId;
}

/*! Returns the name of this Device. This is visible to the user. */
QString Device::name() const
{
    return m_name;
}

/*! Set the \a name for this Device. This is visible to the user.*/
void Device::setName(const QString &name)
{
    m_name = name;
}

/*! Returns the parameter of this Device. It must match the parameter description in the associated \l{DeviceClass}. */
ParamList Device::params() const
{
    return m_params;
}

/*! Sets the \a params of this Device. It must match the parameter description in the associated \l{DeviceClass}. */
void Device::setParams(const ParamList &params)
{
    m_params = params;
}

/*! Returns the value of the \l{Param} of this Device with the given \a paramName. */
QVariant Device::paramValue(const QString &paramName) const
{
    foreach (const Param &param, m_params) {
        if (param.name() == paramName) {
            return param.value();
        }
    }
    return QVariant();
}

/*! Sets the \a value of the \l{Param} with the given \a paramName. */
void Device::setParamValue(const QString &paramName, const QVariant &value)
{
    ParamList params;
    foreach (Param param, m_params) {
        if (param.name() == paramName) {
            param.setValue(value);
        }
        params.append(param);
    }
    m_params = params;
}

/*! Returns the states of this Device. It must match the \l{StateType} description in the associated \l{DeviceClass}. */
QList<State> Device::states() const
{
    return m_states;
}

/*! Returns true, a \l{Param} with the given \a paramName exists for this Device. */
bool Device::hasParam(const QString &paramName) const
{
    foreach (const Param &param, m_params) {
        if (param.name() == paramName) {
            return true;
        }
    }
    return false;
}

DeviceId m_id;
void Device::setStates(const QList<State> &states)
{
    m_states = states;
}

/*! Returns true, a \l{State} with the given \a stateTypeId exists for this Device. */
bool Device::hasState(const StateTypeId &stateTypeId) const
{
    foreach (const State &state, m_states) {
        if (state.stateTypeId() == stateTypeId) {
            return true;
        }
    }
    return false;
}

/*! For convenience, this finds the \l{State} matching the given \a stateTypeId and returns the current valie in this Device. */
QVariant Device::stateValue(const StateTypeId &stateTypeId) const
{
    foreach (const State &state, m_states) {
        if (state.stateTypeId() == stateTypeId) {
            return state.value();
        }
    }
    return QVariant();
}

/*! For convenience, this finds the \l{State} matching the given \a stateTypeId in this Device and sets the current value to \a value. */
void Device::setStateValue(const StateTypeId &stateTypeId, const QVariant &value)
{
    for (int i = 0; i < m_states.count(); ++i) {
        if (m_states.at(i).stateTypeId() == stateTypeId) {
            if (m_states.at(i).value() == value)
                return;


            // TODO: check min/max value + possible values
            //       to prevent an invalid state type from the plugin side

            State newState(stateTypeId, m_id);
            newState.setValue(value);
            m_states[i] = newState;
            emit stateValueChanged(stateTypeId, value);
            return;
        }
    }
    qCWarning(dcDeviceManager) << "failed setting state for" << m_name << value;
}

/*! Returns the \l{State} with the given \a stateTypeId of this Device. */
State Device::state(const StateTypeId &stateTypeId) const
{
    for (int i = 0; i < m_states.count(); ++i) {
        if (m_states.at(i).stateTypeId() == stateTypeId) {
            return m_states.at(i);
        }
    }
    return State(StateTypeId(), DeviceId());
}

/*! Returns the \l{DeviceId} of the parent Device from Device. If the parentId
    is not set, this device is a parent device.
*/
DeviceId Device::parentId() const
{
    return m_parentId;
}

/*! Sets the \a parentId of this Device. If the parentId
    is not set, this device is a parent device.
*/
void Device::setParentId(const DeviceId &parentId)
{
    m_parentId = parentId;
}

/*! Returns true, if setup of this Device is already completed. */
bool Device::setupComplete() const
{
    return m_setupComplete;
}

void Device::setSetupComplete(const bool &complete)
{
    m_setupComplete = complete;
}