/**
 * Copyright (c) 2025 favewa
 * SPDX-License-Identifier: BSD-3-Clause
 */

#pragma once

#include "ratazana.h"

#include <stddef.h>
#include <stdint.h>

constexpr uint16_t HIDPP_VENDOR_LOGITECH = 0x046d;

constexpr uint8_t HIDPP_DEVICE_WIRED = 0xFF;
constexpr uint8_t HIDPP_DEVICE_WIRELESS_1 = 0x01;

constexpr uint8_t HIDPP_REPORT_SHORT = 0x10;
constexpr uint8_t HIDPP_REPORT_LONG = 0x11;

constexpr size_t HIDPP_SHORT_REPORT_SIZE = 7;
constexpr size_t HIDPP_LONG_REPORT_SIZE = 20;

constexpr uint8_t HIDPP_FUNCTION_PING = 0x00;
constexpr uint8_t HIDPP_FUNCTION_ERROR = 0x8F;

constexpr uint8_t HIDPP_SOFTWARE_ID = 0x10;

typedef struct __attribute__((packed)) {
	uint8_t report_type;
	uint8_t device_idx;
	uint8_t feature_id;
	uint8_t function_id;
	uint8_t params[HIDPP_LONG_REPORT_SIZE - 4];
} hidpp_packet_t;

typedef union {
	hidpp_packet_t packet;
	uint8_t raw[HIDPP_LONG_REPORT_SIZE];
} hidpp_payload_t;

_Static_assert(sizeof(hidpp_packet_t) == HIDPP_LONG_REPORT_SIZE,
			   "hid++20 packet size mismatch");

typedef struct {
	uint8_t major;
	uint8_t minor;
} hidpp_version_t;

bool hidpp_match_logitech_mouse(ratazana_hid_device_t *info);

ratazana_result_t hidpp_detect_protocol(ratazana_device_t *restrict dev,
										hidpp_version_t *restrict version);

ratazana_result_t hidpp_write(const ratazana_device_t *restrict dev,
							  const uint8_t *restrict data, size_t len);

ratazana_result_t hidpp_recv(const ratazana_device_t *restrict dev,
							 uint8_t *restrict data, size_t len,
							 int timeout_ms);

ratazana_result_t hidpp_communicate(ratazana_device_t *restrict dev,
									const hidpp_payload_t *restrict request,
									hidpp_payload_t *restrict response);