//
//  LevelPickerView.cpp
//  HalloweenSpaceInvaders-mobile
//
//  Created by Katarzyna Kalinowska-Górska on 29/09/2019.
//

#include <stdio.h>
#include "LevelPickerView.h"
#include "GeometryUtils.h"
#include "MiscUtils.h"

LevelPickerView* LevelPickerView::create(const std::vector<std::string>& levelImagePaths, const std::vector<std::string>& levelNames){
    LevelPickerView * view = new (std::nothrow) LevelPickerView();
    if(view && view->init(levelImagePaths, levelNames))
    {
        view->autorelease();
        return view;
    }
    CC_SAFE_DELETE(view);
    return nullptr;
}


bool LevelPickerView::init(const std::vector<std::string>& levelImagePaths, const std::vector<std::string>& levelNames){
    
//    assert(levelNames.size() == levelImagePaths.size());
    
    if(!cocos2d::Node::init()){
        return false;
    }
    
    setCascadeOpacityEnabled(true);
    reloadLevels(levelImagePaths, levelNames);
    
    _onLevelChanged = nullptr;
    prepareTouchHandlers();
    
    return true;
}

void LevelPickerView::reloadLevels(const std::vector<std::string>& levelImagePaths, const std::vector<std::string>& levelNames){
    for(auto oldLevelView : levelViews){
        oldLevelView->removeFromParent();
    }
    levelViews.clear();
    float maxHeight = 0;
    float sumWidth = 0;
    
    for(int i = 0; i < levelImagePaths.size(); ++i){
        auto newLevelView = levelNames.size() == levelImagePaths.size() ? LevelView::create(levelImagePaths[i], levelNames[i]) : LevelView::create(levelImagePaths[i]);
        addChild(newLevelView);
        levelViews.emplace_back(newLevelView);
        sumWidth += newLevelView->getBoundingBox().size.width;
        maxHeight = MAX(newLevelView->getBoundingBox().size.height, maxHeight);
    }
    
    auto padding = sumWidth/levelImagePaths.size()/3;
    auto contentSize = cocos2d::Size(sumWidth+padding*3, maxHeight);
    
    setContentSize(contentSize);
    
    for(int i = 0; i < levelViews.size(); ++i){
        auto levelView = levelViews[i];
        levelView->setPosition(levelView->getBoundingBox().size.width/2 + padding*(4*i+0.5), contentSize.height/2);
    }
    
    _selectedLevelIndex = 0;
    levelViews[_selectedLevelIndex]->setChosen(true, false);
}

void LevelPickerView::selectLevelIndex(int index, bool animated){
    if(_selectedLevelIndex != index){
        if(animated){
            levelViews[_selectedLevelIndex]->setChosen(false, true);
            levelViews[index]->setChosen(true, true);
        } else {
            levelViews[_selectedLevelIndex]->setChosen(false, false);
            levelViews[index]->setChosen(true, false);
        }
        _selectedLevelIndex = index;
    }
}

int LevelPickerView::getPickedLevelIndex(){
    return _selectedLevelIndex;
}

void LevelPickerView::addOnLevelChangedCallback(std::function<void(int)> onLevelChanged){
    _onLevelChanged = onLevelChanged;
}

void LevelPickerView::prepareTouchHandlers()
{
    auto touchListener = cocos2d::EventListenerTouchOneByOne::create();
    touchListener->onTouchBegan = [&](cocos2d::Touch* touch, cocos2d::Event* event){
        return MiscUtils::isNodeVisible(this) && GeometryUtils::getBoundingBoxToWorld(this).containsPoint(touch->getLocation());
    };
    touchListener->onTouchEnded = [&](cocos2d::Touch* touch, cocos2d::Event* event){
        for(int i = 0; i < levelViews.size(); ++i){
            if(GeometryUtils::getBoundingBoxToWorld(levelViews[i]).containsPoint(touch->getLocation())){
                selectLevelIndex(i, true);
                if(_onLevelChanged != nullptr){
                    _onLevelChanged(i);
                }
                break;
            }
        }
    };
    _eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
}

void LevelPickerView::loadPropertiesFromJSON(const rapidjson::Value& jsonValue, LayoutViewInterface* scene, const std::string resFolder, const std::string altResFolder)
{
    setAnchorPoint(cocos2d::Vec2(0.5,0.5));
    this->loadCommonPropertiesFromJSON(jsonValue);
}