/****************************************************************************
Copyright (c) 2010      cocos2d-x.org
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
Copyright (c) 2020 c4games.com

http://www.cocos2d-x.org

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of this software and associated documentation files (the "Software"), to deal
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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****************************************************************************/
#ifndef __CC_UTILS_H__
#define __CC_UTILS_H__

#include <vector>
#include <string>
#include "2d/CCNode.h"
#include "base/ccMacros.h"
#include "base/CCRefPtr.h"
#include "base/CCData.h"
#include "renderer/backend/Types.h"
#include "math/Mat4.h"

#define CC_HEX2CHAR(hex) ((hex) < 0xa ? ((hex) + '0') : ((hex) + 'a' - 10))

/** @file ccUtils.h
Misc free functions
*/

NS_CC_BEGIN
/*
ccNextPOT function is licensed under the same license that is used in Texture2D.m.
*/

/** Returns the Next Power of Two value.

Examples:
- If "value" is 15, it will return 16.
- If "value" is 16, it will return 16.
- If "value" is 17, it will return 32.
@param value The value to get next power of two.
@return Returns the next power of two value.
@since v0.99.5
*/

int ccNextPOT(int value);

class Sprite;
class Image;

namespace utils
{
    /** Capture the entire screen.
     * To ensure the snapshot is applied after everything is updated and rendered in the current frame,
     * we need to wrap the operation with a custom command which is then inserted into the tail of the render queue.
     * @param afterCaptured specify the callback function which will be invoked after the snapshot is done.
     * @param filename specify a filename where the snapshot is stored. This parameter can be either an absolute path or a simple
     * base filename ("hello.png" etc.), don't use a relative path containing directory names.("mydir/hello.png" etc.).
     * @since v4.0 with engine-x
     */
    CC_DLL void  captureScreen(std::function<void(RefPtr<Image>)> imageCallback);

    /** Capture a specific Node.
    * @param startNode specify the snapshot Node. It should be cocos2d::Scene
    * @param scale
    * @returns: return a Image, then can call saveToFile to save the image as "xxx.png or xxx.jpg".
    * @since v4.0 with engine-x
    */
    CC_DLL void captureNode(Node* startNode, std::function<void(RefPtr<Image>)> imageCallback, float scale = 1.0f);

    /** Capture the entire screen. V4-copmatiable only, [DEPRECATED]
    * To ensure the snapshot is applied after everything is updated and rendered in the current frame,
    * we need to wrap the operation with a custom command which is then inserted into the tail of the render queue.
    * @param afterCaptured specify the callback function which will be invoked after the snapshot is done.
    * @param filename specify a filename where the snapshot is stored. This parameter can be either an absolute path or a simple
    * base filename ("hello.png" etc.), don't use a relative path containing directory names.("mydir/hello.png" etc.).
    * @since v4.0
    */
    CC_DLL void captureScreen(std::function<void(bool, const std::string&)> afterCap, const std::string& filename);
    
    /** Find children by name, it will return all child that has the same name.
     * It supports c++ 11 regular expression. It is  a helper function of `Node::enumerateChildren()`.
     * You can refer to `Node::enumerateChildren()` for detail information.
     *
     * @param node The node to find
     * @param name The name to search for, it supports c++ 11 expression
     * @return Array of Nodes that matches the name
     * @since v3.2
     */
    CC_DLL std::vector<Node*>  findChildren(const Node &node, const std::string &name);
    
    /** Same to ::atof, but strip the string, remain 7 numbers after '.' before call atof.
     * Why we need this? Because in android c++_static, atof ( and std::atof ) is unsupported for numbers have long decimal part and contain
     * several numbers can approximate to 1 ( like 90.099998474121094 ), it will return inf. This function is used to fix this bug.
     * @param str The string be to converted to double.
     * @return Returns converted value of a string.
     */
    CC_DLL double  atof(const char* str);

    /** Get current exact time, accurate to nanoseconds.
     * @return Returns the time in seconds since the Epoch.
     */
    CC_DLL double  gettime();

    /**
     * Get current time in milliseconds, accurate to nanoseconds
     *
     * @return  Returns the time in milliseconds since the Epoch.
     */
    CC_DLL long long  getTimeInMilliseconds();

    /**
     * Calculate unionof bounding box of a node and its children.
     * @return Returns unionof bounding box of a node and its children.
     */
    CC_DLL Rect getCascadeBoundingBox(Node *node);

    /**
     * Create a sprite instance from base64 encoded image and adds the texture to the Texture Cache.

     * @return Returns an instance of sprite
     */
    CC_DLL Sprite* createSpriteFromBase64Cached(const char* base64String, const char* key);

    /**
    * Create a sprite instance from base64 encoded image.

    * @return Returns an instance of sprite
    */
    CC_DLL Sprite* createSpriteFromBase64(const char* base64String);


    /**
     * Find a child by name recursively

     * @return  Returns found node or nullptr
     */
    CC_DLL Node*  findChild(Node* levelRoot, const std::string& name);

    /**
     * Find a child by tag recursively

     * @return Returns found node or nullptr
     */
    CC_DLL Node*  findChild(Node* levelRoot, int tag);

    /**
     * Find a child by name recursively

     * @return  Returns found node or nullptr with specified type 'T'
     */
    template<typename T>
    inline T findChild(Node* levelRoot, const std::string& name)
    {
        return dynamic_cast<T>(findChild(levelRoot, name));
    }

    /**
     * Find a child by tag recursively

     * @return  Returns found node or nullptr with specified type 'T'
     */
    template<typename T>
    inline T findChild(Node* levelRoot, int tag)
    {
        return dynamic_cast<T>(findChild(levelRoot, tag));
    }

    /**
     *  Gets the md5 hash for the given file.
     *  @param filename The file to calculate md5 hash.
     *  @return The md5 hash for the file
     */
    CC_DLL std::string getFileMD5Hash(const std::string &filename);


    /**
    *  Gets the md5 hash for the given buffer.
    *  @param data The buffer to calculate md5 hash.
    *  @return The md5 hash for the data
    */
    CC_DLL std::string getDataMD5Hash(const Data &data);

    /**
    @brief Converts language iso 639-1 code to LanguageType enum.
    @return LanguageType enum.
    * @js NA
    * @lua NA
    */
    CC_DLL LanguageType getLanguageTypeByISO2(const char* code);
    
    CC_DLL backend::BlendFactor toBackendBlendFactor(int factor);

    CC_DLL int toGLBlendFactor(backend::BlendFactor blendFactor);

    CC_DLL backend::SamplerFilter toBackendSamplerFilter(int mode);

    CC_DLL backend::SamplerAddressMode toBackendAddressMode(int mode);

    // Adjust matrix for metal.
    CC_DLL const Mat4& getAdjustMatrix();

    /**
    Get the Normal Matrix of matrixMV
    */
    CC_DLL std::vector<float> getNormalMat3OfMat4(const Mat4 &mat);

    /**
    @brief Parses a list of space-separated integers.
    @return Vector of ints.
    * @js NA
    * @lua NA
    */
    CC_DLL std::vector<int> parseIntegerList(const std::string &intsString);
	
	/**
    @brief translate charstring/binarystream to hexstring.
    @return hexstring.
    * @js NA
    * @lua NA
    */
    CC_DLL std::string bin2hex(const std::string& binary /*charstring also regard as binary in C/C++*/, int delim = -1, bool prefix = false);

    /**
    @brief killCurrentProcess immidiately, any object's destructor never call
    @return NA.
    * @js NA
    * @lua NA
    */
    CC_DLL void killCurrentProcess();

    /**
    * Create a Game Object, like CREATE_FUNC, but more powerful

    * @return  Returns a RefPtr<T> game object
    * @remark  Auto manage cocos2d::Ref reference count, use std::unique_ptr
    * @limition  The init function finit must be public
    */
    template <typename T, typename F, typename... Ts>
    static RefPtr<T> makeInstance(F&& memf, Ts&&... args)
    {
        RefPtr<T> pRet(ReferencedObject<T>{new(std::nothrow) T()});
        if (pRet && std::mem_fn(memf)(pRet.get(), std::forward<Ts>(args)...))
            return pRet;
        
        pRet.reset();
        return pRet;
    }

   /**
   * Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

   * @return  Returns a autorelease game object
   * @remark  Auto manage cocos2d::Ref reference count, use std::unique_ptr
   * @limition  The init function finit must be public
   */
    template<typename T> inline
        static RefPtr<T> makeInstance()
    {
        return makeInstance<T>(&T::init);
    }

    /**
    * Create a Game Object, like CREATE_FUNC, but more powerful

    * @return  Returns a autorelease game object
    * @remark  Auto manage cocos2d::Ref reference count, use AutoReleasePool
    * @limition The init function finit must be public
    */
    template<typename T, typename F, typename...Ts>
    inline T* createInstance(F&& finit, Ts&&... args)
    {
        T* pRet = new(std::nothrow) T();
        if (pRet && std::mem_fn(finit)(pRet, std::forward<Ts>(args)...)) {
            pRet->autorelease();
            return pRet;
        }
        else
        {
            delete pRet;
            pRet = nullptr;
            return nullptr;
        }
    }

    /**
   * Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

   * @return  Returns a autorelease game object
   * @remark  Auto manage cocos2d::Ref reference count, use AutoReleasePool
   * @limition  The init function finit must be public
   */
    template<typename T>
    inline T* createInstance()
    {
        return ::cocos2d::utils::createInstance<T>(&T::init);
    }

    /**
   * Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful

   * @return  Returns a game object
   * @remark  You need call release after you don't want use it manually
   * @limition  The init function finit must be public
   */
    template <typename T, typename F, typename... Ts>
    static T* newInstance(F&& memf, Ts&&... args)
    {
        T* pRet = new(std::nothrow) T();
        if (pRet && std::mem_fn(memf)(pRet, std::forward<Ts>(args)...))
        {
            return pRet;
        }
        else
        {
            delete pRet;
            pRet = nullptr;
            return nullptr;
        }
    }

    /**
    * Create a Game Object with 'bool T::init()', like CREATE_FUNC, but more powerful
    
    * @return  Returns a game object
    * @remark  You need call release after you don't want use it manually
    * @limition  The init function finit must be public
    */
    template<typename T> inline
        static T* newInstance()
    {
        return newInstance<T>(&T::init);
    }


    // check a number is power of two.
    static bool isPOT(int number)
    {
        return ((number > 0) && (number & (number - 1)) == 0);
    }
}

NS_CC_END

#endif // __SUPPORT_CC_UTILS_H__