/*****************************************************************************
The Dark Mod GPL Source Code

This file is part of the The Dark Mod Source Code, originally based
on the Doom 3 GPL Source Code as published in 2011.

The Dark Mod Source Code 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, either version 3 of the License,
or (at your option) any later version. For details, see LICENSE.TXT.

Project: The Dark Mod (http://www.thedarkmod.com/)

******************************************************************************/

#pragma once

#include "StdFilesystem.h"
#include "StdString.h"
#include "TraceLog.h"

namespace fs = stdext;

namespace tdm
{

class File
{
public:
	// Returns the path relative to the given root
	static fs::path GetRelativePath(const fs::path& absolute, const fs::path& root)
	{
		std::string fullString = absolute.string();

		if (stdext::starts_with(fullString, root.string()))
		{
			fullString = fullString.substr(root.string().size());

			if (fullString.length() > 0 && (fullString[0] == '/' || fullString[0] == '\\'))
			{
				fullString = fullString.substr(1);
			}

			return fs::path(fullString);
		}

		// Return input
		return absolute;
	}

	// True if the given file has ending PK4 or ZIP
	static bool IsArchive(const fs::path& file)
	{
		std::string extension = stdext::to_lower_copy(fs::extension(file));

		return (extension == ".pk4" || extension == ".zip");
	}

	// True if the given file has ending ZIP
	static bool IsZip(const fs::path& file)
	{
		std::string extension = stdext::to_lower_copy(fs::extension(file));

		return extension == ".zip";
	}

	// True if the given file has ending PK4
	static bool IsPK4(const fs::path& file)
	{
		std::string extension = stdext::to_lower_copy(fs::extension(file));

		return extension == ".pk4";
	}

	// Predicate to check whether the given file is a compressed one and whether it makes sense to deflate it at all
	static bool IsCompressed(const fs::path& file)
	{
		std::string extension = stdext::to_lower_copy(fs::extension(file));

		return extension == ".pk4" || extension == ".jpg" || extension == ".ogg" ||
			   extension == ".zip";
	}

	static bool Remove(const fs::path& fileToRemove)
	{
		try
		{
			if (fs::exists(fileToRemove))
			{
				fs::remove(fileToRemove);
				TraceLog::WriteLine(LOG_VERBOSE, "Removed file " + fileToRemove.string());
			}

			return true;
		}
		catch (fs::filesystem_error& e)
		{
			TraceLog::WriteLine(LOG_VERBOSE, "Exception while removing file: " + std::string(e.what()));
			return false;
		}
	}

	static bool Move(const fs::path& fromPath, const fs::path& toPath)
	{
		try
		{
			fs::rename(fromPath, toPath);
			TraceLog::WriteLine(LOG_VERBOSE, "Moved " + fromPath.string() + " to " + toPath.string());

			return true;
		}
		catch (fs::filesystem_error& e)
		{
			TraceLog::WriteLine(LOG_VERBOSE, "Exception while moving file: " + std::string(e.what()));

			return false;
		}
	}

	static bool Copy(const fs::path& fromPath, const fs::path& toPath)
	{
		try
		{
			fs::copy_file(fromPath, toPath);
			TraceLog::WriteLine(LOG_VERBOSE, "Copied " + fromPath.string() + " to " + toPath.string());

			return true;
		}
		catch (fs::filesystem_error& e)
		{
			TraceLog::WriteLine(LOG_VERBOSE, "Exception while copying file: " + std::string(e.what()));

			return false;
		}
	}

	// Marks the given file as executable (for all groups) - does nothing in Win32
	static void MarkAsExecutable(const fs::path& path);
};

}