#include<iostream>
#include<fstream>

#include"FileManager.h"

using std::cout;
using std::endl;
using std::ifstream;
using std::ofstream;
using std::string;

namespace Managers
{
	FileManager::FileManager() {}
	FileManager::FileManager(string filePath)
	{
		this->filePath = filePath;
		readFile();
	}	


	void FileManager::saveFile(string newFilePath)
	{
		if (!fileRead)
			readFile();

		ofstream of{newFilePath, ofstream::binary};
		of.write(fileBuffer, fileBufferLength);
		of.close();
	}

	void FileManager::readFile()
	{
		ifstream is{filePath, ifstream::binary};
		if (is)
		{
			is.seekg (0, is.end);
    		fileBufferLength = is.tellg();
    		is.seekg (0, is.beg);

    		fileBuffer = new char [fileBufferLength];

    		cout<< "Reading "<<fileBufferLength<<" characters... "<<endl;;
    		is.read (fileBuffer,fileBufferLength);

    		if (is)
      			cout<<"all characters read successfully.";
    		else
      			cout<<"error: only "<<is.gcount()<<" could be read";
			cout<<endl;
    		is.close();
			fileRead = true;
		}
	}
	void FileManager::modifyFilePath(string filePath)
	{
		this->filePath = filePath;
	}

	char* FileManager::retrieveFileBuffer() const
	{
		return fileBuffer;
	}

	int FileManager::retrieveFileBufferLength() const { return fileBufferLength; }
}