/**
 * EQEmulator: Everquest Server Emulator
 * Copyright (C) 2001-2020 EQEmulator Development Team (https://github.com/EQEmu/Server)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY except by those people which sell it, which
 * are required to give you total support for your newly bought product;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
*/

#include <fstream>
#include "file.h"

#ifdef _WINDOWS
#include <direct.h>
#include <conio.h>
#include <iostream>
#include <dos.h>
#include <windows.h>
#include <process.h>
#else

#include <unistd.h>
#include <sys/stat.h>

#endif

#include <fmt/format.h>
#include <filesystem>
#include <iostream>
#include <sys/stat.h>
#include <vector>

namespace fs = std::filesystem;


bool File::Exists(const std::string &name)
{
	struct stat sb{};
	if (stat(name.c_str(), &sb) == 0) {
		return true;
	}

	return false;
}

void File::Makedir(const std::string &directory_name)
{
	try {
		fs::create_directory(directory_name);
		fs::permissions(directory_name, fs::perms::owner_all);
	}
	catch (const fs::filesystem_error &ex) {
		std::cout << "Failed to create directory: " << directory_name << std::endl;
		std::cout << ex.what() << std::endl;
	}
}

std::string File::FindEqemuConfigPath()
{
	if (File::Exists(fs::path{File::GetCwd() + "/eqemu_config.json"}.string())) {
		return File::GetCwd();
	}
	else if (File::Exists(fs::path{File::GetCwd() + "/../eqemu_config.json"}.string())) {
		return canonical(fs::path{File::GetCwd() + "/../"}).string();
	}
	else if (File::Exists(fs::path{File::GetCwd() + "/login.json"}.string())) {
		return File::GetCwd();
	}
	else if (File::Exists(fs::path{File::GetCwd() + "/../login.json"}.string())) {
		return canonical(fs::path{File::GetCwd() + "/../"}).string();
	}

	return {};
}

std::string File::GetCwd()
{
	return fs::current_path().string();
}

FileContentsResult File::GetContents(const std::string &file_name)
{
	std::ifstream f(file_name, std::ios::in | std::ios::binary);
	if (!f) {
		return { .error = fmt::format("Couldn't open file [{}]", file_name) };
	}

	constexpr size_t CHUNK_SIZE = 4096;  // Read 4KB chunks
	std::string lines;
	std::vector<char> buffer(CHUNK_SIZE);

	while (f.read(buffer.data(), CHUNK_SIZE) || f.gcount() > 0) {
		lines.append(buffer.data(), f.gcount());
	}

	return FileContentsResult{
		.contents = lines,
		.error = {}
	};
}