#include "./tox_ipc_client.hpp"

#include "./zpp_rpc_cldev.hpp"

#include <span>
#include <iostream>

using namespace zpp::bits::literals;

ToxIPCClient::ToxIPCClient(void) {
}

ToxIPCClient::~ToxIPCClient(void) {
	// TODO: add free (not close) to ipc api
#if 0 // they gone, so no
	ipc_mem_close(&_mem_rpc);
	ipc_sem_close(&_sem_rpc_c);
	ipc_sem_close(&_sem_rpc_s);

	ipc_mem_close(&_mem_events);
	ipc_sem_close(&_sem_events_lock);
#endif
}

bool ToxIPCClient::connect(void) {
	// TODO: more cleanup?
	{ // rpc
		ipc_mem_init(&_mem_rpc, "solana_toxI_rpc.shm", RPC_MEM_SIZE); // 2k prob enough for now

		// client expects it to exist
		if (ipc_mem_open_existing(&_mem_rpc) != 0) {
			std::cerr << "rpc shared mem not open\n";
			ipc_mem_close(&_mem_rpc);
			return false;
		}

		// client write lock (server waits on this)
		ipc_sem_init(&_sem_rpc_c, "solana_toxI_rpc_client.lock");

		if (ipc_sem_create(&_sem_rpc_c, 0) != 0) {
			std::cerr << "failed to create sem_rpc_c\n";
			ipc_mem_close(&_mem_rpc);
			return false;
		}

		// server write lock (client waits on this)
		ipc_sem_init(&_sem_rpc_s, "solana_toxI_rpc_server.lock");

		if (ipc_sem_create(&_sem_rpc_s, 0) != 0) {
			std::cerr << "failed to create sem_rpc_s\n";
			ipc_mem_close(&_mem_rpc);
			return false;
		}
		// if no call is in progress, both sems are 0
	}

	{ // events
		ipc_mem_init(&_mem_events, "solana_toxEventsI_events.shm", EVENTS_MEM_SIZE);
		// server creates
		if (ipc_mem_open_existing(&_mem_events) != 0) {
			std::cerr << "events shared mem not open\n";
			return false;
		}

		// mutex
		ipc_sem_init(&_sem_events_lock, "solana_toxEventsI_events.lock");
		if (ipc_sem_create(&_sem_events_lock, 1) != 0) {
			std::cerr << "failed to create sem_events_lock\n";
			return false;
		}
	}

	return true;
}

void ToxIPCClient::iterate(void) {
	Tox_Events* events = nullptr;

	// grap mutex
	ipc_sem_decrement(&_sem_events_lock);

	// read first byte
	const uint8_t zbyte = ipc_mem_access(&_mem_events)[0];
	if (zbyte == EVENTS_WRITTEN) {
		// if WRITTEN, serl, release mutex
		events = tox_events_load(ipc_mem_access(&_mem_events)+1, EVENTS_MEM_SIZE-1);

		ipc_mem_access(&_mem_events)[0] = EVENTS_READ;
		ipc_sem_increment(&_sem_events_lock);
	} else {
		// if not, release mutex exit
		ipc_sem_increment(&_sem_events_lock);
		return;
	}

	// handle events
	if (events == nullptr) {
		std::cerr << "error: read back empty events list?\n";
		return;
	}

	dispatchEvents(events);

	tox_events_free(events);
}

Tox_Connection ToxIPCClient::toxSelfGetConnectionStatus(void) {
	// we assume we can write (warn)

	zpp::bits::in in{std::span{ipc_mem_access(&_mem_rpc), RPC_MEM_SIZE}};
	zpp::bits::out out{std::span{ipc_mem_access(&_mem_rpc), RPC_MEM_SIZE}};

	// TODO: write magic on client and server to very

	// serl call
	ToxI_rpc::client cl{in, out}; // ephimeral, should be cheap

	// TODO: no throw

	// write to mem
	cl.request<"ToxI::toxSelfGetConnectionStatus"_sha1_int>().or_throw();

	// inc sem
	ipc_sem_increment(&_sem_rpc_c);

	// wait on sem (block)
	ipc_sem_decrement(&_sem_rpc_s);

	// deserl res and return
	return cl.response<"ToxI::toxSelfGetConnectionStatus"_sha1_int>().or_throw();
}

#define CL_SETUP_BUFS \
	zpp::bits::in in{std::span{ipc_mem_access(&_mem_rpc), RPC_MEM_SIZE}}; \
	zpp::bits::out out{std::span{ipc_mem_access(&_mem_rpc), RPC_MEM_SIZE}}; \
	ToxI_rpc::client cl{in, out};

#define CL_REQUEST(X, ...) cl.request<"ToxI::" #X##_sha1_int>(__VA_ARGS__).or_throw();
#define CL_REQUEST_STR(X, ...) cl.request<"ToxI::" #X "_str"_sha1_int>(__VA_ARGS__).or_throw();

#define CL_SEMWAIT \
	ipc_sem_increment(&_sem_rpc_c); \
	ipc_sem_decrement(&_sem_rpc_s);

#define CL_RESPONSE(X) return cl.response<"ToxI::" #X##_sha1_int>().or_throw();
#define CL_RESPONSE_STR(X) return cl.response<"ToxI::" #X "_str"_sha1_int>().or_throw();
// TODO: for real?
#define CL_RESPONSE_VOID(X) cl.response<"ToxI::" #X##_sha1_int>().or_throw();

#define CL_BODY(X, ...) \
	CL_SETUP_BUFS \
	CL_REQUEST(X, __VA_ARGS__) \
	CL_SEMWAIT \
	CL_RESPONSE(X)

#define CL_BODY_STR(X, ...) \
	CL_SETUP_BUFS \
	CL_REQUEST_STR(X, __VA_ARGS__) \
	CL_SEMWAIT \
	CL_RESPONSE_STR(X)

#define CL_BODY_VOID(X, ...) \
	CL_SETUP_BUFS \
	CL_REQUEST(X, __VA_ARGS__) \
	CL_SEMWAIT
// TODO: response with void?

uint32_t ToxIPCClient::toxIterationInterval(void) {
	CL_BODY(toxIterationInterval)
}

std::vector<uint8_t> ToxIPCClient::toxSelfGetAddress(void) {
	CL_BODY(toxSelfGetAddress)
}

void ToxIPCClient::toxSelfSetNospam(uint32_t nospam) {
	CL_BODY_VOID(toxSelfSetNospam, nospam)
}

uint32_t ToxIPCClient::toxSelfGetNospam(void) {
	CL_BODY(toxSelfGetNospam)
}

std::vector<uint8_t> ToxIPCClient::toxSelfGetPublicKey(void) {
	CL_BODY(toxSelfGetPublicKey)
}

Tox_Err_Set_Info ToxIPCClient::toxSelfSetName(std::string_view name) {
	CL_BODY(toxSelfSetName, std::string{name})
}

std::string ToxIPCClient::toxSelfGetName(void) {
	CL_BODY(toxSelfGetName)
}

Tox_Err_Set_Info ToxIPCClient::toxSelfSetStatusMessage(std::string_view status_message) {
	CL_BODY(toxSelfSetStatusMessage, std::string{status_message})
}

std::string ToxIPCClient::toxSelfGetStatusMessage(void) {
	CL_BODY(toxSelfGetStatusMessage)
}

void ToxIPCClient::toxSelfSetStatus(Tox_User_Status status) {
	CL_BODY_VOID(toxSelfSetStatus, status)
}

Tox_User_Status ToxIPCClient::toxSelfGetStatus(void) {
	CL_BODY(toxSelfGetStatus)
}

std::tuple<std::optional<uint32_t>, Tox_Err_Friend_Add> ToxIPCClient::toxFriendAdd(const std::vector<uint8_t>& address, std::string_view message) {
	CL_BODY(toxFriendAdd, address, std::string{message})
}

std::tuple<std::optional<uint32_t>, Tox_Err_Friend_Add> ToxIPCClient::toxFriendAddNorequest(const std::vector<uint8_t>& public_key) {
	CL_BODY(toxFriendAddNorequest, public_key)
}

Tox_Err_Friend_Delete ToxIPCClient::toxFriendDelete(uint32_t friend_number) {
	CL_BODY(toxFriendDelete, friend_number)
}

std::tuple<std::optional<std::vector<uint8_t>>, Tox_Err_Friend_Get_Public_Key> ToxIPCClient::toxFriendGetPublicKey(uint32_t friend_number) {
	CL_BODY(toxFriendGetPublicKey, friend_number)
}

std::tuple<std::optional<uint32_t>, Tox_Err_Friend_Send_Message> ToxIPCClient::toxFriendSendMessage(uint32_t friend_number, Tox_Message_Type type, std::string_view message) {
	CL_BODY(toxFriendSendMessage, friend_number, type, std::string{message})
}

std::vector<uint8_t> ToxIPCClient::toxHash(const std::vector<uint8_t>& data) {
	CL_BODY(toxHash, data)
}

Tox_Err_Conference_Send_Message ToxIPCClient::toxConferenceSendMessage(uint32_t conference_number, Tox_Message_Type type, std::string_view message) {
	CL_BODY(toxConferenceSendMessage, conference_number, type, std::string{message})
}

Tox_Err_Friend_Custom_Packet ToxIPCClient::toxFriendSendLossyPacket(uint32_t friend_number, const std::vector<uint8_t>& data) {
	CL_BODY(toxFriendSendLossyPacket, friend_number, data)
}

Tox_Err_Friend_Custom_Packet ToxIPCClient::toxFriendSendLosslessPacket(uint32_t friend_number, const std::vector<uint8_t>& data) {
	CL_BODY(toxFriendSendLosslessPacket, friend_number, data)
}

std::tuple<std::optional<uint32_t>, Tox_Err_Group_New> ToxIPCClient::toxGroupNew(Tox_Group_Privacy_State privacy_state, std::string_view group_name, std::string_view name) {
	CL_BODY(toxGroupNew, privacy_state, std::string{group_name}, std::string{name})
}

std::tuple<std::optional<uint32_t>, Tox_Err_Group_Join> ToxIPCClient::toxGroupJoin(const std::vector<uint8_t>& chat_id, std::string_view name, std::string_view password) {
	CL_BODY(toxGroupJoin, chat_id, std::string{name}, std::string{password})
}

std::optional<bool> ToxIPCClient::toxGroupIsConnected(uint32_t group_number) {
	CL_BODY(toxGroupIsConnected, group_number)
}

Tox_Err_Group_Reconnect ToxIPCClient::toxGroupReconnect(uint32_t group_number) {
	CL_BODY(toxGroupReconnect, group_number)
}

Tox_Err_Group_Leave ToxIPCClient::toxGroupLeave(uint32_t group_number, std::string_view part_message) {
	CL_BODY(toxGroupLeave, group_number, std::string{part_message})
}

std::optional<std::string> ToxIPCClient::toxGroupSelfGetName(uint32_t group_number) {
	CL_BODY(toxGroupSelfGetName, group_number)
}

std::tuple<std::optional<std::string>, Tox_Err_Group_Peer_Query> ToxIPCClient::toxGroupPeerGetName(uint32_t group_number, uint32_t peer_id) {
	CL_BODY(toxGroupPeerGetName, group_number, peer_id)
}

std::tuple<std::optional<Tox_Connection>, Tox_Err_Group_Peer_Query> ToxIPCClient::toxGroupPeerGetConnectionStatus(uint32_t group_number, uint32_t peer_id) {
	CL_BODY(toxGroupPeerGetConnectionStatus, group_number, peer_id)
}

Tox_Err_Group_Topic_Set ToxIPCClient::toxGroupSetTopic(uint32_t group_number, std::string_view topic) {
	CL_BODY(toxGroupSetTopic, group_number, std::string{topic})
}

std::optional<std::string> ToxIPCClient::toxGroupGetTopic(uint32_t group_number) {
	CL_BODY(toxGroupGetTopic, group_number)
}

std::optional<std::string> ToxIPCClient::toxGroupGetName(uint32_t group_number) {
	CL_BODY(toxGroupGetName, group_number)
}

std::optional<std::vector<uint8_t>> ToxIPCClient::toxGroupGetChatId(uint32_t group_number) {
	CL_BODY(toxGroupGetChatId, group_number)
}

std::tuple<std::optional<uint32_t>, Tox_Err_Group_Send_Message> ToxIPCClient::toxGroupSendMessage(uint32_t group_number, Tox_Message_Type type, std::string_view message) {
	CL_BODY(toxGroupSendMessage, group_number, type, std::string{message})
}

Tox_Err_Group_Send_Private_Message ToxIPCClient::toxGroupSendPrivateMessage(uint32_t group_number, uint32_t peer_id, Tox_Message_Type type, std::string_view message) {
	CL_BODY(toxGroupSendPrivateMessage, group_number, peer_id, type, std::string{message})
}

Tox_Err_Group_Send_Custom_Packet ToxIPCClient::toxGroupSendCustomPacket(uint32_t group_number, bool lossless, const std::vector<uint8_t>& data) {
	CL_BODY(toxGroupSendCustomPacket, group_number, lossless, data)
}

Tox_Err_Group_Send_Custom_Private_Packet ToxIPCClient::toxGroupSendCustomPrivatePacket(uint32_t group_number, uint32_t peer_id, bool lossless, const std::vector<uint8_t>& data) {
	CL_BODY(toxGroupSendCustomPrivatePacket, group_number, peer_id, lossless, data)
}

Tox_Err_Group_Invite_Friend ToxIPCClient::toxGroupInviteFriend(uint32_t group_number, uint32_t friend_number) {
	CL_BODY(toxGroupInviteFriend, group_number, friend_number)
}

std::tuple<std::optional<uint32_t>, Tox_Err_Group_Invite_Accept> ToxIPCClient::toxGroupInviteAccept(uint32_t friend_number, const std::vector<uint8_t>& invite_data, std::string_view name, std::string_view password) {
	CL_BODY(toxGroupInviteAccept, friend_number, invite_data, std::string{name}, std::string{password})
}