#pragma once

#include <cstddef>
#include <cstdint>
#include <vector>


namespace Archive
{


static constexpr std::size_t NAMELEN {64};


struct Header
{
	std::uint32_t version;
	std::uint32_t total_entries;
	struct {
		std::uint32_t total_blocks;
		std::uint32_t compressed_size;
		std::uint32_t offset;
	} directory;
};


struct Entry
{
	char name[NAMELEN];
	std::uint32_t original_size;
	std::uint32_t compressed_size;
	std::uint32_t offset;
};


class Archive
{
public:
	explicit Archive(const char* path);
	int Expand(int index, std::uint8_t*& buffer, bool null_terminated=false) const;
	int Expand(const char* filepath, std::uint8_t*& buffer, bool null_terminated=false) const;
	int Find(const char* filepath) const;
	int Update(const char* filepath);
	void WriteMeta();
	void UpdateBlockMap();
	std::size_t FindFreeSpot(std::size_t bytes) const;
	void PrintNamesOfEntries() const;
	void PrintBlocks() const;
	std::size_t DirectoryBlocks() const;
private:
	const char* path;
	Header header;
	std::vector<Entry> entries;
	std::vector<int> blocks;
};


}  // namespace Archive