#include <arduino.h>
#include <mruby.h>
#include "../llbruby.h"

serial_t *Serial;
serial_t *Serial1;	/*1:Serial1*/
serial_t *Serial2;	/*2:Serial3*/
serial_t *Serial3;	/*3:Serial2*/
serial_t *Serial4;	/*4:Serial6*/
serial_t *Serial5;	/*5:Serial7*/

i2c_t Wire1;
i2c_t Wire2;
i2c_t Wire3;
i2c_t Wire4;
i2c_t Wire5;

FATFS RomDisk;
SD Sd;

char ExeFilename[64];

void arduino_init()
{
}

void randomSeed(long seed)
{
}

long arduino_random(long min, long max)
{
	return min;
}

struct pin_node pin_list;

static struct pin_node *find_pin(PinType type, PinName pin)
{
	struct pin_node *ret = &pin_list;

	while (ret != NULL) {
		if ((ret->type == type) && (ret->pin == pin)) {
			break;
		}
		ret = ret->next;
	}

	return ret;
}

static struct pin_node *new_pin(PinType type, PinName pin)
{
	struct pin_node *ret = calloc(1, sizeof(struct pin_node));

	ret->next = pin_list.next;
	ret->type = type;
	ret->pin = pin;

	pin_list.next = ret;

	return ret;
}

struct pin_node *get_pin(PinType type, PinName pinno)
{
	struct pin_node *pin;

	if (pinno == -1)
		return NULL;

	pin = find_pin(type, pinno);
	if (pin != NULL)
		return pin;

	pin = new_pin(type, pinno);
	if (pin == NULL)
		return NULL;

	switch (type) {
	case pintype_gpio:
		gpio_init(&pin->gpio, pinno);
		break;
	case pintype_dac:
#if DEVICE_ANALOGOUT
		analogout_init(&pin->dac, pinno);
#endif
		break;
	case pintype_pwmout:
		pwmout_init(&pin->pwmout, pinno);
		pin->period = 491;
		break;
	case pintype_analogin:
		analogin_init(&pin->analogin, pinno);
		break;
	}

	return pin;
}

bool portToPins(SCI_PORT port, PinName *txpin, PinName *rxpin)
{
	switch (port) {
	case SCI_USB0:
		*txpin = 201;
		*rxpin = 202;
		break;
	case SCI_SCI0P2x:
		*txpin = 1;
		*rxpin = 2;
		break;
	case SCI_SCI2B:
		*txpin = 1;
		*rxpin = 2;
		break;
	case SCI_SCI6B:
		*txpin = 1;
		*rxpin = 2;
		break;
	case SCI_SCI2A:
		*txpin = 1;
		*rxpin = 2;
		break;
	default:
		*txpin = 0;
		*rxpin = 0;
		return false;
	}

	return true;
}

PinType get_pin_type(PinName pin)
{
	struct pin_node *ret = &pin_list;

	while (ret != NULL) {
		if (ret->pin == pin) {
			return ret->type;
		}
	}

	return pintype_none;
}

void analogReference(int mode)
{

}

void setPinModeDac(int pin)
{

}

void tone(int pin, int frequency, int duration)
{

}

void noTone(int pin)
{

}

int serial_write(serial_t *serial, const unsigned char *buf, int len)
{
	const char *c = (const char *)buf;

	for (int i = 0; i < len; i++) {
		serial_putc(serial, c[i]);
	}

	return len;
}

int serial_print(serial_t *serial, const char *str)
{
	int i;

	for (i = 0; ; i++) {
		char c = str[i];
		if (c == '\0')
			break;

		serial_putc(serial, c);
	}

	return i;
}

int serial_println(serial_t *serial, const char *str)
{
	int i;

	for (i = 0; ; i++) {
		char c = str[i];
		if (c == '\0')
			break;

		serial_putc(serial, c);
	}

	i++;
	serial_putc(serial, '\r');

	i++;
	serial_putc(serial, '\n');

	return i;
}

uint8_t EEPROM_write(int addr, uint8_t data)
{
	return 0;
}

uint8_t EEPROM_read(int addr)
{
	return 0xFF;
}

int EEP_fopen(FILEEEP *fp, const char *str, char mode)
{
	FRESULT ret;
	BYTE fm;

	switch (mode){
	case 0:
		fm = FA_READ;
		break;
	case 1:
		fm = FA_READ | FA_WRITE | FA_CREATE_NEW;
		break;
	case 2:
		fm = FA_READ | FA_WRITE;
		break;
	default:
		return -1;
	}

	ret = f_open(&fp->fp, str, fm);

	return (ret == FR_OK) ? 0 : -1;
}

int EEP_fwrite(FILEEEP *fp, byte *data, int *len)
{
	FRESULT ret;

	ret = f_write(&fp->fp, data, (UINT)*len, (UINT *)len);

	return (ret == FR_OK) ? 1 : -1;
}

int EEP_fread(FILEEEP *fp)
{
	FRESULT ret;
	char c;
	UINT br;

	ret = f_read(&fp->fp, &c, 1, &br);
	if (ret != FR_OK)
		return -1;

	return c;
}

void EEP_fclose(FILEEEP *fp)
{
	f_close(&fp->fp);
}

int EEP_fseek(FILEEEP *fp, int pos, int mode)
{
	FRESULT ret;

	switch (mode){
	case EEP_SEEKTOP:
		ret = f_lseek(&fp->fp, pos);
		break;
	case EEP_SEEKCUR:
		ret = f_lseek(&fp->fp, fp->fp.fptr + pos);
		break;
	case EEP_SEEKEND:
		ret = f_lseek(&fp->fp, fp->fp.fsize - pos);
		break;
	default:
		ret = FR_INVALID_PARAMETER;
		break;
	}

	if (ret != FR_OK)
		f_lseek(&fp->fp, 0);

	return fp->fp.fptr;
}

int EEP_ffilesize(const char *str)
{
	FRESULT ret;
	FILINFO fno;

	ret = f_stat(str, &fno);
	if (ret != FR_OK)
		return 0;

	return fno.fsize;
}

bool EEP_fEof(FILEEEP *fp)
{
	return f_tell(&fp->fp) == f_size(&fp->fp);
}

bool EEP_fexist(const char *path)
{
	FRESULT ret;
	FILINFO fno;

	ret = f_stat(path, &fno);

	return (ret == FR_OK);
}

bool EEP_fcopy(const char *src, const char *dst)
{
	FIL fsrc, fdst;
	BYTE buffer[512];
	FRESULT res;
	UINT br, bw;

	res = f_open(&fsrc, src, FA_OPEN_EXISTING | FA_READ);
	if (res != FR_OK)
		return false;

	res = f_open(&fdst, dst, FA_CREATE_ALWAYS | FA_WRITE);
	if (res != FR_OK){
		f_close(&fsrc);
		return false;
	}

	for (;;) {
		res = f_read(&fsrc, buffer, sizeof(buffer), &br);
		if ((res != FR_OK) || br == 0)
			break;

		res = f_write(&fdst, buffer, br, &bw);
		if ((res != FR_OK) || bw < br)
			break;
	}

	f_close(&fsrc);
	f_close(&fdst);

	return (res == FR_OK);
}

bool EEP_fdelete(const char *path)
{
	FRESULT res;

	res = f_unlink(path);

	return (res == FR_OK);
}

bool SD_begin()
{
	DSTATUS dst;
	FRESULT res;
	BYTE pdrv = 1, type;

	if (Sd.FatFs.fs_type != 0)
		return true;

	if ((dst = disk_initialize(pdrv)) != RES_OK) {
		return false;
	}

	if ((dst = disk_ioctl(pdrv, MMC_GET_TYPE, &type)) != RES_OK) {
		Sd.dst = dst;
		Sd.type = 0;
	}
	else {
		Sd.dst = RES_OK;
		Sd.type = type;
	}

	if ((res = f_mount(&Sd.FatFs, "1:", 1)) != FR_OK) {
		return false;
	}

	return true;
}

bool SD_open(File *file, const char *path, int mode)
{
	FRESULT ret;

	if (!SD_begin())
		return false;

	ret = f_open(&file->fp, path, mode);

	return ret == FR_OK;
}

bool SD_rmdir(const char *path)
{
	FRESULT ret;

	if (!SD_begin())
		return false;

	ret = f_unlink(path);

	return ret == FR_OK;
}

bool SD_rename(const char *path1, const char *path2)
{
	FRESULT ret;

	if (!SD_begin())
		return false;

	ret = f_rename(path1, path2);
	
	return ret == FR_OK;
}

bool SD_remove(const char *path)
{
	FRESULT ret;

	if (!SD_begin())
		return false;

	ret = f_unlink(path);

	return ret == FR_OK;
}

bool SD_exists(const char *path)
{
	FRESULT ret;
	FILINFO fno;

	if (!SD_begin())
		return false;

	ret = f_stat(path, &fno);

	return ret == FR_OK;
}

bool SD_mkdir(const char *path)
{
	FRESULT ret;

	if (!SD_begin())
		return false;

	ret = f_mkdir(path);

	return ret == FR_OK;
}

int file_write(File *fd, unsigned char *str, int len)
{
	FRESULT ret;
	UINT bw;

	ret = f_write(&fd->fp, str, len, &bw);
	if (ret != FR_OK)
		return -1;

	return bw;
}

void file_close(File *fd)
{
	f_close(&fd->fp);
}

int file_size(File *fd)
{
	return f_size(&fd->fp);
}

int file_position(File *fd)
{
	return fd->fp.fptr;
}

void file_flush(File *fd)
{
	f_flush(&fd->fp);
}

bool file_seek(File *fd, int pos)
{
	FRESULT ret;

	ret = f_lseek(&fd->fp, pos);

	return ret != FR_OK;
}

int file_read(File *fd)
{
	FRESULT ret;
	char c;
	UINT br;

	ret = f_read(&fd->fp, &c, 1, &br);
	if (ret != FR_OK)
		return -1;

	return c;
}

void system_reboot(int mode)
{

}

int fileloader(const char *progVer, const char *binVer)
{
	return 0;
}

DWORD get_fattime(void)
{
	time_t temp;
	struct tm _tm;

	time(&temp);
	gmtime_r(&temp, &_tm);

	return	  ((DWORD)(_tm.tm_year - 1980) << 25)
		| ((DWORD)_tm.tm_mon << 21)
		| ((DWORD)_tm.tm_mday << 16)
		| ((DWORD)_tm.tm_hour << 11)
		| ((DWORD)_tm.tm_min << 5)
		| ((DWORD)_tm.tm_sec >> 1);
}

void mrb_gr_peach_gem_init(mrb_state *mrb)
{
}

void mrb_gr_peach_gem_final(mrb_state *mrb)
{

}