#include "debug.hpp"

#include <cstddef>
#include <cstdint>
#include <cstring>

#include <tonc.h>

namespace debug {
/**
 * \brief MGBA debug registers and constants
 */
namespace reg {
/**
 * \brief MGBA debug enable register.
 *
 * When 0xC0DE is written to the register, debug output is enabled.
 * When 0 is written to the register, debug output is disabled.
 * Will be set to 0x1DEA when successfully enabled.
 */
static volatile uint16_t* enable = reinterpret_cast<uint16_t*>(0x4FFF780);
/**
 * \brief MGBA debug flags register.
 */
static volatile uint16_t* flags = reinterpret_cast<uint16_t*>(0x4FFF700);
/**
 * \brief MGBA debug string register.
 *
 * Max length of 0x100 (256)
 */
static char* string = reinterpret_cast<char*>(0x4FFF600);
constexpr size_t string_len = 0x100;
}; // namespace reg


void puts(const char* msg, level lvl) {
	std::strncpy(reg::string, msg, reg::string_len);
	*reg::flags = (lvl) | 0x100;
}

bool open() {
	*reg::enable = 0xC0DE;
	return *reg::enable ==0x1DEA;
}

void close() {
	*reg::enable = 0;
}
}; // namespace debug