#include <tox/tox.h>

//#include <cstdint>
//#include <cassert>
//#include <new>
//#include <map>
//#include <list>
//#include <set>
//#include <optional>
//#include <algorithm>
#include <array>

struct _GroupKey {
	std::array<uint8_t, TOX_GROUP_CHAT_ID_SIZE> data;

	_GroupKey(void) = default;
	_GroupKey(const _GroupKey& other) : data(other.data) {}
	_GroupKey(_GroupKey&&) = delete;

	bool operator<(const _GroupKey& rhs) const {
		for (size_t i = 0; i < data.size(); i++) {
			if (data[i] < rhs.data[i]) {
				return true;
			} else if (data[i] > rhs.data[i]) {
				return false;
			}
		}
		return false; // equal
	}

	bool operator==(const _GroupKey& rhs) const {
		for (size_t i = 0; i < data.size(); i++) {
			if (data[i] != rhs.data[i]) {
				return false;
			}
		}
		return true;
	}
};

struct _PeerKey {
	std::array<uint8_t, TOX_GROUP_PEER_PUBLIC_KEY_SIZE> data;

	_PeerKey(void) = default;
	_PeerKey(const _PeerKey& other) : data(other.data) {}
	_PeerKey(_PeerKey&&) = delete;

	bool operator<(const _PeerKey& rhs) const {
		for (size_t i = 0; i < data.size(); i++) {
			if (data[i] < rhs.data[i]) {
				return true;
			} else if (data[i] > rhs.data[i]) {
				return false;
			}
		}
		return false; // equal
	}

	bool operator==(const _PeerKey& rhs) const {
		for (size_t i = 0; i < data.size(); i++) {
			if (data[i] != rhs.data[i]) {
				return false;
			}
		}
		return true;
	}
};

enum _PacketType : uint8_t {
	// TODO: why?
	INVALID = 0u,

	//TODO: make it possible to go further back

	// request last (few) message_ids for a peer
	// - peer_key bytes (peer key we want to know ids for)
	// - 1 byte (uint8_t count ids, atleast 1)
	HS1_REQUEST_LAST_IDS,

	// respond to a request with 0 or more message ids, sorted by newest first
	// - peer_key bytes (the msg_ids are from)
	// - 1 byte (uint8_t count ids, can be 0)
	// - array [
	//   - msg_id bytes (the message id
	// - ]
	HS1_RESPONSE_LAST_IDS,

};

static const char* _pkgid2str(_PacketType type) {
#define _HS1_CASE(x) case (x): return #x;
	switch (type) {
		_HS1_CASE(INVALID)
		_HS1_CASE(HS1_REQUEST_LAST_IDS)
		_HS1_CASE(HS1_RESPONSE_LAST_IDS)
		default: return "<unk>";
	}
#undef _HS1_CASE
}