/*
 * remote_control.c
 *
 *  Created on: Nov 4, 2025
 *      Author: sowgro
 */

#include <stm32l4xx.h>
#include <stdio.h>
#include <string.h>
#include "player_actions.h"
#include "UART.h"
#include "project.h"

static char buffer[80];
static char* cur = buffer;

void remote_control_start() {
    NVIC_EnableIRQ (USART2_IRQn);
    USART2->CR1 |= USART_CR1_RXNEIE; // 1 << 5

	help();
}

void remote_control_loop() {

}

void remote_control_stop() {

}

static void parse_input(char buffer[]) {
	uint8_t *state = project_get_state();
	if (!strcmp(buffer, "HELP")) {
		help();
	}
	else if (!strcmp(buffer, "NEXT")) {
		next();
	}
	else if (!strcmp(buffer, "PLAY")) {
		play();
		*state = PLAYING_STATE;
	}
	else if (!strcmp(buffer, "PAUSE")) {
		pause();
		*state = PAUSED_STATE;
	}
	else if (!strcmp(buffer, "STOP")) {
		stop();
		*state = STOPPED_STATE;
	}
	else {
		printf("Unknown command \"%s\"\n\r", buffer);
	}
}

#include "systick.h"
void USART2_IRQHandler() {
	int ch = USART_Read(USART2);
	putchar(ch);
	if (!ch)
		return;
	if (ch == '\r') {
		*cur = 0;
		parse_input(buffer);
		cur = buffer;
		return;
	}
	if (ch == 0x08 || ch == 0x7F) {
		if (cur <= buffer)
			return;
		cur--;
		printf("\b \b");
		return;
	}
	*cur++ = ch;
}