#include "Box2dView.h"
#include "GLES-Render.h"
#include "Test.h"
#include "renderer/CCRenderer.h"

USING_NS_CC;

#define kAccelerometerFrequency 30
#define FRAMES_BETWEEN_PRESSES_FOR_DOUBLE_CLICK 10

extern int g_totalEntries;

Settings settings;

enum 
{
    kTagBox2DNode,
}; 

Box2dTestBedSuite::Box2dTestBedSuite()
{
    for (int entryId = 0; entryId < g_totalEntries; ++entryId)
    {
        addTestCase(g_testEntries[entryId].name, [entryId](){
            return Box2dTestBed::createWithEntryID(entryId);
        });
    }
}

//------------------------------------------------------------------
//
// Box2dTestBed
//
//------------------------------------------------------------------

Box2dTestBed::Box2dTestBed()
{
}

Box2dTestBed::~Box2dTestBed()
{
    _eventDispatcher->removeEventListener(_touchListener);
}

Box2dTestBed* Box2dTestBed::createWithEntryID(int entryId)
{
    auto layer = new (std::nothrow) Box2dTestBed();
    layer->initWithEntryID(entryId);
    layer->autorelease();

    return layer;
}

bool Box2dTestBed::initWithEntryID(int entryId)
{
    if (!TestCase::init())
    {
        return false;
    }
    auto director = Director::getInstance();
	Vec2 visibleOrigin = director->getVisibleOrigin();
	Size visibleSize = director->getVisibleSize();

    m_entryID = entryId;
    
    Box2DView* view = Box2DView::viewWithEntryID( entryId );
    addChild(view, 0, kTagBox2DNode);
    view->setScale(15);
    view->setAnchorPoint( Vec2(0,0) );
    view->setPosition(visibleOrigin.x+visibleSize.width/2, visibleOrigin.y+visibleSize.height/3);
    auto label = Label::createWithTTF(view->title().c_str(), "fonts/arial.ttf", 28);
    addChild(label, 1);
    label->setPosition(visibleOrigin.x+visibleSize.width/2, visibleOrigin.y+visibleSize.height-50);
    
    // Adds touch event listener
    auto listener = EventListenerTouchOneByOne::create();
    listener->setSwallowTouches(true);

    listener->onTouchBegan = CC_CALLBACK_2(Box2dTestBed::onTouchBegan, this);
    listener->onTouchMoved = CC_CALLBACK_2(Box2dTestBed::onTouchMoved, this);

    _eventDispatcher->addEventListenerWithFixedPriority(listener, 1);

    _touchListener = listener;
    
    return true;
}

bool Box2dTestBed::onTouchBegan(Touch* touch, Event* event)
{
    return true;
}

void Box2dTestBed::onTouchMoved(Touch* touch, Event* event)
{
    auto diff = touch->getDelta();    
    auto node = getChildByTag( kTagBox2DNode );
    auto currentPos = node->getPosition();
    node->setPosition(currentPos + diff);
}

//------------------------------------------------------------------
//
// Box2DView
//
//------------------------------------------------------------------
Box2DView::Box2DView(void)
{
}

Box2DView* Box2DView::viewWithEntryID(int entryId)
{
    Box2DView* pView = new (std::nothrow) Box2DView();
    pView->initWithEntryID(entryId);
    pView->autorelease();

    return pView;
}

bool Box2DView::initWithEntryID(int entryId)
{
    m_entry = g_testEntries + entryId;
    m_test = m_entry->createFcn();
    
    
    // Adds Touch Event Listener
    auto listener = EventListenerTouchOneByOne::create();
    listener->setSwallowTouches(true);
    
    listener->onTouchBegan = CC_CALLBACK_2(Box2DView::onTouchBegan, this);
    listener->onTouchMoved = CC_CALLBACK_2(Box2DView::onTouchMoved, this);
    listener->onTouchEnded = CC_CALLBACK_2(Box2DView::onTouchEnded, this);
    
    _eventDispatcher->addEventListenerWithFixedPriority(listener, -10);
    _touchListener = listener;
    
    auto keyboardListener = EventListenerKeyboard::create();
    keyboardListener->onKeyPressed = CC_CALLBACK_2(Box2DView::onKeyPressed, this);
    keyboardListener->onKeyReleased = CC_CALLBACK_2(Box2DView::onKeyReleased, this);
    _eventDispatcher->addEventListenerWithFixedPriority(keyboardListener, -11);
    _keyboardListener = keyboardListener;
    
    return true;
}

std::string Box2DView::title() const
{
    return std::string(m_entry->name);
}

void Box2DView::draw(Renderer *renderer, const Mat4 &transform, uint32_t flags)
{
    Layer::draw(renderer, transform, flags);

    _customCmd.init(_globalZOrder, transform, flags);
    _customCmd.func = CC_CALLBACK_0(Box2DView::onDraw, this, transform, flags);
    renderer->addCommand(&_customCmd);
}

void Box2DView::onDraw(const Mat4 &transform, uint32_t flags)
{
    Director* director = Director::getInstance();
    CCASSERT(nullptr != director, "Director is null when seting matrix stack");
    director->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
    director->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW, transform);

    GL::enableVertexAttribs( cocos2d::GL::VERTEX_ATTRIB_FLAG_POSITION );
    m_test->Step(&settings);
    m_test->m_world->DrawDebugData();
    CHECK_GL_ERROR_DEBUG();
    
    director->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);
}

Box2DView::~Box2DView()
{
    // Removes Touch Event Listener
    _eventDispatcher->removeEventListener(_touchListener);
    _eventDispatcher->removeEventListener(_keyboardListener);
    delete m_test;
}

bool Box2DView::onTouchBegan(Touch* touch, Event* event)
{
    auto touchLocation = touch->getLocation();    

    auto nodePosition = convertToNodeSpace( touchLocation );
    log("Box2DView::onTouchBegan, pos: %f,%f -> %f,%f", touchLocation.x, touchLocation.y, nodePosition.x, nodePosition.y);

    return m_test->MouseDown(b2Vec2(nodePosition.x,nodePosition.y));
}

void Box2DView::onTouchMoved(Touch* touch, Event* event)
{
    auto touchLocation = touch->getLocation();    
    auto nodePosition = convertToNodeSpace( touchLocation );
    
    log("Box2DView::onTouchMoved, pos: %f,%f -> %f,%f", touchLocation.x, touchLocation.y, nodePosition.x, nodePosition.y);
    
    m_test->MouseMove(b2Vec2(nodePosition.x,nodePosition.y));        
}

void Box2DView::onTouchEnded(Touch* touch, Event* event)
{
    auto touchLocation = touch->getLocation();    
    auto nodePosition = convertToNodeSpace( touchLocation );
    
    log("Box2DView::onTouchEnded, pos: %f,%f -> %f,%f", touchLocation.x, touchLocation.y, nodePosition.x, nodePosition.y);
    
    m_test->MouseUp(b2Vec2(nodePosition.x,nodePosition.y));
}

void Box2DView::onKeyPressed(EventKeyboard::KeyCode code, Event* event)
{
    log("Box2dView:onKeyPressed, keycode: %d", static_cast<int>(code));
    m_test->Keyboard(static_cast<unsigned char>(code));
}

void Box2DView::onKeyReleased(EventKeyboard::KeyCode code, Event* event)
{
    log("onKeyReleased, keycode: %d", static_cast<int>(code));
    m_test->KeyboardUp(static_cast<unsigned char>(code));
}