//
//  BehaviacFileManager.cpp
//  redream_runtime_mac
//
//  Created by zhu on 2023/2/14.
//

#include "BehaviacFileManager.hpp"
#include "cocos2d.h"

namespace behaviac {
BehaviacFileManager::BehaviacFileManager()
{
}

BehaviacFileManager::~BehaviacFileManager()
{
}

behaviac::IFile* BehaviacFileManager::FileOpen(const char* fileName, behaviac::CFileSystem::EOpenMode iOpenAccess)
{
    std::string fileP = std::string(&fileName[1]);
    std::string fullPath = cocos2d::FileUtils::getInstance()->fullPathForFilename(fileP.c_str());
    cocos2d::Data data = cocos2d::FileUtils::getInstance()->getDataFromFile(fullPath);
    if (data.isNull()) {
        return nullptr;
    }
    
    behaviac::IFile* file = BEHAVIAC_NEW CCBehaviacFile(fileName, data.getSize(), data.getBytes());
    if (!file) {
        return nullptr;
    }

    return file;
}

void BehaviacFileManager::FileClose(behaviac::IFile* file)
{
    if (file) {
        delete file;
    }
}

bool BehaviacFileManager::FileExists(const char* fileName)
{
    return cocos2d::FileUtils::getInstance()->isFileExist(fileName);
}

uint64_t BehaviacFileManager::FileGetSize(const char* fileName)
{
    std::string fullPath = cocos2d::FileUtils::getInstance()->fullPathForFilename(fileName);
    ssize_t fileSize = cocos2d::FileUtils::getInstance()->getFileSize(fullPath);
    return static_cast<uint32_t>(fileSize);
}

//MARK: - file
CCBehaviacFile::CCBehaviacFile(const char* filePath, uint32_t size, const uint8_t* data)
: _filePath(filePath){
    if (data) {
        _buffer.resize(size);
        memcpy(_buffer.data(), data, size);
        _bufferSize = size;
    }
}

CCBehaviacFile::~CCBehaviacFile(){
    _buffer.clear();
    _bufferSize = 0;
}

uint32_t CCBehaviacFile::Read(void* pBuffer, uint32_t numberOfBytesToRead){
    if (pBuffer && !_buffer.empty()) {
        numberOfBytesToRead = std::min(numberOfBytesToRead, _bufferSize - _currentPosition);
        memcpy(pBuffer, _buffer.data() + _currentPosition, numberOfBytesToRead);
        _currentPosition += numberOfBytesToRead;
        return true;
    }
    numberOfBytesToRead = 0;
    return false;
}

uint32_t CCBehaviacFile::Write(const void* pBuffer, uint32_t numberOfBytesToWrite){
    return 0;
}

int64_t  CCBehaviacFile::Seek(int64_t distanceToMove, behaviac::CFileSystem::ESeekMode moveMethod){
    return 0;
}

uint64_t CCBehaviacFile::GetSize(){
    return _bufferSize;
}
};