// Copyright 2024 Nick Brassel (@tzarc)
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once

#include <stdint.h>
#include <stddef.h> // offsetof
#include "eeconfig.h"

#ifndef EECONFIG_MAGIC_NUMBER
#    define EECONFIG_MAGIC_NUMBER (uint16_t)0xFEE4 // When changing, decrement this value to avoid future re-init issues
#endif
#define EECONFIG_MAGIC_NUMBER_OFF (uint16_t)0xFFFF

// Dummy struct only used to calculate offsets
typedef struct PACKED {
    uint16_t magic;
    uint8_t  debug;
    uint8_t  default_layer;
    uint16_t keymap;
    uint8_t  backlight;
    uint8_t  audio;
    uint32_t rgblight;
    uint8_t  unicode;
    uint8_t  steno;
    uint8_t  handedness;
    uint32_t keyboard;
    uint32_t user;
    union { // Mutually exclusive
        uint32_t led_matrix;
        uint64_t rgb_matrix;
    };
    uint32_t haptic;
    uint8_t  rgblight_ext;
} eeprom_core_t;

/* EEPROM parameter address */
#define EECONFIG_MAGIC (uint16_t *)(offsetof(eeprom_core_t, magic))
#define EECONFIG_DEBUG (uint8_t *)(offsetof(eeprom_core_t, debug))
#define EECONFIG_DEFAULT_LAYER (uint8_t *)(offsetof(eeprom_core_t, default_layer))
#define EECONFIG_KEYMAP (uint16_t *)(offsetof(eeprom_core_t, keymap))
#define EECONFIG_BACKLIGHT (uint8_t *)(offsetof(eeprom_core_t, backlight))
#define EECONFIG_AUDIO (uint8_t *)(offsetof(eeprom_core_t, audio))
#define EECONFIG_RGBLIGHT (uint32_t *)(offsetof(eeprom_core_t, rgblight))
#define EECONFIG_UNICODEMODE (uint8_t *)(offsetof(eeprom_core_t, unicode))
#define EECONFIG_STENOMODE (uint8_t *)(offsetof(eeprom_core_t, steno))
#define EECONFIG_HANDEDNESS (uint8_t *)(offsetof(eeprom_core_t, handedness))
#define EECONFIG_KEYBOARD (uint32_t *)(offsetof(eeprom_core_t, keyboard))
#define EECONFIG_USER (uint32_t *)(offsetof(eeprom_core_t, user))
#define EECONFIG_LED_MATRIX (uint32_t *)(offsetof(eeprom_core_t, led_matrix))
#define EECONFIG_RGB_MATRIX (uint64_t *)(offsetof(eeprom_core_t, rgb_matrix))
#define EECONFIG_HAPTIC (uint32_t *)(offsetof(eeprom_core_t, haptic))
#define EECONFIG_RGBLIGHT_EXTENDED (uint8_t *)(offsetof(eeprom_core_t, rgblight_ext))

// Size of EEPROM being used for core data storage
#define EECONFIG_BASE_SIZE ((uint8_t)sizeof(eeprom_core_t))

#define EECONFIG_KB_DATABLOCK ((uint8_t *)(EECONFIG_BASE_SIZE))
#define EECONFIG_USER_DATABLOCK ((uint8_t *)((EECONFIG_BASE_SIZE) + (EECONFIG_KB_DATA_SIZE)))

// Size of EEPROM being used, other code can refer to this for available EEPROM
#define EECONFIG_SIZE ((EECONFIG_BASE_SIZE) + (EECONFIG_KB_DATA_SIZE) + (EECONFIG_USER_DATA_SIZE))

_Static_assert((intptr_t)EECONFIG_HANDEDNESS == 14, "EEPROM handedness offset is incorrect");