/* Copyright 2023 Dual Tachyon
 * https://github.com/DualTachyon
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing, software
 *     distributed under the License is distributed on an "AS IS" BASIS,
 *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *     See the License for the specific language governing permissions and
 *     limitations under the License.
 */

#include <stdbool.h>
#include "ARMCM0.h"

#include "audio.h"
#include "battery.h"
#include "bsp/dp32g030/gpio.h"
#include "bsp/dp32g030/portcon.h"
#include "bsp/dp32g030/syscon.h"
#include "board.h"
#include "driver/backlight.h"
#include "driver/bk1080.h"
#include "driver/bk4819.h"
#include "driver/crc.h"
#include "driver/eeprom.h"
#include "driver/flash.h"
#include "driver/gpio.h"
#include "driver/keyboard.h"
#include "driver/st7565.h"
#include "driver/system.h"
#include "driver/systick.h"
#include "driver/uart.h"
#include "functions.h"
#include "gui.h"
#include "helper.h"
#include "misc.h"
#include "radio.h"
#include "settings.h"

static const char Version[] = "UV-K5 Firmware, v0.01 Open Edition\r\n";

static void FLASHLIGHT_Init(void)
{
	PORTCON_PORTC_IE = PORTCON_PORTC_IE_C5_BITS_ENABLE;
	PORTCON_PORTC_PU = PORTCON_PORTC_PU_C5_BITS_ENABLE;
	GPIOC->DIR |= GPIO_DIR_3_BITS_OUTPUT;

	GPIO_SetBit(&GPIOC->DATA, 10);
	GPIO_SetBit(&GPIOC->DATA, 11);
	GPIO_SetBit(&GPIOC->DATA, 12);
	GPIO_SetBit(&GPIOC->DATA, 13);
}

static void FLASHLIGHT_TurnOff(void)
{
	GPIO_ClearBit(&GPIOC->DATA, GPIOB_PIN_FLASHLIGHT);
}

static void FLASHLIGHT_TurnOn(void)
{
	GPIO_SetBit(&GPIOC->DATA, GPIOB_PIN_FLASHLIGHT);
}

#if 0
static void ProcessKey(void)
{
	KEY_Code_t Key;

	Key = KEYBOARD_Poll();

	switch (Key) {
	case KEY_0: UART_Print("ZERO\r\n"); break;
	case KEY_1: UART_Print("ONE\r\n"); break;
	case KEY_2: UART_Print("TWO\r\n"); break;
	case KEY_3: UART_Print("THREE\r\n"); break;
	case KEY_4: UART_Print("FOUR\r\n"); break;
	case KEY_5: UART_Print("FIVE\r\n"); break;
	case KEY_6: UART_Print("SIX\r\n"); break;
	case KEY_7: UART_Print("SEVEN\r\n"); break;
	case KEY_8: UART_Print("EIGHT\r\n"); break;
	case KEY_9: UART_Print("NINE\r\n"); break;
	case KEY_MENU: UART_Print("MENU\r\n"); break;
	case KEY_UP: UART_Print("UP\r\n"); break;
	case KEY_DOWN: UART_Print("DOWN\r\n"); break;
	case KEY_EXIT: UART_Print("EXIT\r\n"); break;
	case KEY_STAR: UART_Print("STAR\r\n"); break;
	case KEY_F: UART_Print("F\r\n"); break;
	case KEY_PTT: UART_Print("PTT\r\n"); break;
	case KEY_SIDE2: UART_Print("SIDE2\r\n"); break;
	case KEY_SIDE1: UART_Print("SIDE1\r\n"); break;
	case KEY_INVALID: break;
	}
}
#endif

static void Console(void)
{
	KEY_Code_t Key;

	Key = KEYBOARD_Poll();
	if (Key != KEY_INVALID) {
		Key += 0x40;
		UART_Send(&Key, 1);
	}
}

void Main(void)
{
	uint8_t i;

	// Enable clock gating of blocks we need.
	SYSCON_DEV_CLK_GATE = 0
		| SYSCON_DEV_CLK_GATE_GPIOA_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_GPIOB_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_GPIOC_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_UART1_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_SPI0_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_SARADC_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_CRC_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_AES_BITS_ENABLE
		;

	SYSTICK_Init();
	BOARD_Init();

	UART_Init();
	UART_Send(Version, sizeof(Version));

	// Not implementing authentic device checks

	// TODO: EEPROM Init

	BK4819_Init();
	BOARD_ADC_GetBatteryInfo(&gBatteryBootVoltage, &gBatteryCurrent);
	BOARD_EEPROM_Init();
	BOARD_EEPROM_LoadMoreSettings();

	RADIO_ConfigureChannel(0, 2);
	RADIO_ConfigureChannel(1, 2);
	RADIO_ConfigureTX();
	RADIO_SetupRegisters(true);

	for (i = 0; i < 4; i++) {
		BOARD_ADC_GetBatteryInfo(&gBatteryVoltages[i], &gBatteryCurrent);
	}

	BATTERY_GetReadings(false);
	if (!gChargingWithTypeC && !gBatteryDisplayLevel) {
		FUNCTION_Select(FUNCTION_5);
		GPIO_ClearBit(&GPIOB->DATA, GPIOB_PIN_BACKLIGHT);
		g_2000037E = 1;
	} else {
		uint8_t KeyType;
		uint8_t Channel;

		GUI_Welcome();
		BACKLIGHT_TurnOn();
		SYSTEM_DelayMs(1000);
		g_2000044C = 0x33;

		HELPER_GetKey();
		KeyType = HELPER_GetKey();
		if (gEeprom.POWER_ON_PASSWORD < 1000000) {
			g_2000036E = 1;
			GUI_PasswordScreen();
			g_2000036E = 0;
		}

		HELPER_CheckBootKey(KeyType);

		GPIO_ClearBit(&GPIOA->DATA, 12);
		g_2000036F = 1;
		AUDIO_SetVoiceID(0, VOICE_ID_ENG_WELCOME);
		Channel = gEeprom.EEPROM_0E80_0E83[gEeprom.TX_CHANNEL] + 1;
		if (Channel < 201) {
			AUDIO_SetVoiceID(1, VOICE_ID_ENG_CHANNEL_MODE);
			AUDIO_SetDigitVoice(2, Channel);
		} else if ((Channel - 201) < 7) {
			AUDIO_SetVoiceID(1, VOICE_ID_ENG_FREQUENCY_MODE);
		}
		AUDIO_PlaySingleVoice(0);
		RADIO_ConfigureNOAA();
	}

	// Below this line is development/test area not conforming to the original firmware

	// Show some signs of life
	FLASHLIGHT_Init();
	FLASHLIGHT_TurnOn();

	while (1) {
		Console();

		SYSTEM_DelayMs(200);
		FLASHLIGHT_TurnOff();

		Console();

		SYSTEM_DelayMs(200);
		FLASHLIGHT_TurnOn();
	}
}