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#include "updateaxisactionjob_p.h"

#include <Qt3DInput/private/inputhandler_p.h>
#include <Qt3DInput/private/inputmanagers_p.h>
#include <Qt3DInput/private/job_common_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DInput {

namespace Input {

UpdateAxisActionJob::UpdateAxisActionJob(qint64 currentTime, InputHandler *handler, HLogicalDevice handle)
    : Qt3DCore::QAspectJob()
    , m_currentTime(currentTime)
    , m_handler(handler)
    , m_handle(handle)
{
    SET_JOB_RUN_STAT_TYPE(this, JobTypes::UpdateAxisAction, 0);
}

void UpdateAxisActionJob::run()
{
    // Note: we assume axis/action are not really shared:
    // there's no benefit in sharing those when it comes to computing
    LogicalDevice *device = m_handler->logicalDeviceManager()->data(m_handle);

    if (!device->isEnabled())
        return;

    updateAction(device);
    updateAxis(device);
}

void UpdateAxisActionJob::updateAction(LogicalDevice *device)
{
    const auto actionIds = device->actions();
    for (const Qt3DCore::QNodeId actionId : actionIds) {
        bool actionTriggered = false;
        Action *action = m_handler->actionManager()->lookupResource(actionId);

        const auto actionInputIds = action->inputs();
        for (const Qt3DCore::QNodeId actionInputId : actionInputIds)
            actionTriggered |= processActionInput(actionInputId);

        action->setActionTriggered(actionTriggered);
    }
}

bool UpdateAxisActionJob::processActionInput(const Qt3DCore::QNodeId actionInputId)
{
    AbstractActionInput *actionInput = m_handler->lookupActionInput(actionInputId);
    Q_ASSERT(actionInput);
    return actionInput->process(m_handler, m_currentTime);
}

void UpdateAxisActionJob::updateAxis(LogicalDevice *device)
{
    const auto axisIds = device->axes();
    for (const Qt3DCore::QNodeId axisId : axisIds) {
        Axis *axis = m_handler->axisManager()->lookupResource(axisId);
        float axisValue = 0.0f;

        const auto axisInputIds = axis->inputs();
        for (const Qt3DCore::QNodeId axisInputId : axisInputIds)
            axisValue += processAxisInput(axisInputId);

        // Clamp the axisValue -1/1
        axisValue = qMin(1.0f, qMax(axisValue, -1.0f));
        axis->setAxisValue(axisValue);
    }
}

float UpdateAxisActionJob::processAxisInput(const Qt3DCore::QNodeId axisInputId)
{
    AnalogAxisInput *analogInput = m_handler->analogAxisInputManager()->lookupResource(axisInputId);
    if (analogInput)
        return analogInput->process(m_handler, m_currentTime);

    ButtonAxisInput *buttonInput = m_handler->buttonAxisInputManager()->lookupResource(axisInputId);
    if (buttonInput)
        return buttonInput->process(m_handler, m_currentTime);

    Q_UNREACHABLE();
    return 0.0f;
}

} // Input

} // Qt3DInput

QT_END_NAMESPACE