/*
 *    Copyright (C) 2016-2023 Grok Image Compression Inc.
 *
 *    This source code is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This source code is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 */

#pragma once

#include <string>
#include "grok.h"
#include "MemManager.h"

struct GrkIOBuf : public grk_io_buf
{
  public:
	GrkIOBuf() : GrkIOBuf(nullptr, 0, 0, 0, false) {}
	GrkIOBuf(uint8_t* data, size_t offset, size_t dataLen, size_t allocLen, bool pooled)
	{
		data_ = data;
		offset_ = offset;
		len_ = dataLen;
		allocLen_ = allocLen;
		pooled_ = pooled;
	}
	explicit GrkIOBuf(const grk_io_buf rhs)
	{
		data_ = rhs.data_;
		offset_ = rhs.offset_;
		len_ = rhs.len_;
		allocLen_ = rhs.allocLen_;
		pooled_ = rhs.pooled_;
	}
	bool alloc(size_t len)
	{
		dealloc();
		data_ = (uint8_t*)grk_bin::grk_aligned_malloc(len);
		if(data_)
		{
			// printf("Allocated  %p\n", data);
			len_ = len;
			allocLen_ = len;
		}

		return data_ != nullptr;
	}
	void dealloc()
	{
		if(data_)
		{
			grk_bin::grk_aligned_free(data_);
			// printf("Deallocated  %p\n", data);
		}
		data_ = nullptr;
	}
};

class IFileIO
{
  public:
	virtual ~IFileIO() = default;
	virtual bool open(const std::string& fileName, const std::string& mode) = 0;
	virtual bool close(void) = 0;
	virtual uint64_t write(uint8_t* buf, uint64_t offset, size_t len, size_t maxLen,
						   bool pooled) = 0;
	virtual uint64_t write(GrkIOBuf buffer) = 0;
	virtual bool read(uint8_t* buf, size_t len) = 0;
	virtual uint64_t seek(int64_t off, int whence) = 0;
};
