#include <arduino.h>
#include <mruby.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.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;

char ExeFilename[64];

void arduino_init()
{
}

void randomSeed(long seed)
{
	srand(seed);
}

long arduino_random(long min, long max)
{
	return (long)(((double)rand() / (double)RAND_MAX) / ((double)max - (double)min)) + 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)
{
	int ret;
	int fm;

	switch (mode){
	case 0:
		fm = O_RDONLY;
		break;
	case 1:
		fm = O_RDWR | O_CREAT;
		break;
	case 2:
		fm = O_RDWR;
		break;
	default:
		return -1;
	}

	ret = open(str, fm);
	if (ret < 0) {
		fp->fd = 0;
		return -1;
	}
	fp->fd = ret;

	return 0;
}

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

	ret = write(fp->fd, data, *len);
	if (ret < 0) {
		*len = 0;
		return -1;
	}
	*len = ret;

	return 0;
}

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

	ret = read(fp->fd, &c, 1);
	if (ret < 0)
		return -1;

	return c;
}

void EEP_fclose(FILEEEP *fp)
{
	close(fp->fd);
}

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

	switch (mode){
	case EEP_SEEKTOP:
		ret = lseek(fp->fd, pos, SEEK_SET);
		break;
	case EEP_SEEKCUR:
		ret = lseek(fp->fd, pos, SEEK_CUR);
		break;
	case EEP_SEEKEND:
		ret = lseek(fp->fd, pos, SEEK_END);
		break;
	default:
		return -1;
		break;
	}

	if (ret < 0)
		return false;

	return true;
}

int EEP_ffilesize(const char *str)
{
	int ret;
	struct stat fno;

	ret = stat(str, &fno);
	if (ret < 0)
		return 0;

	return fno.st_size;
}

bool EEP_fEof(FILEEEP *fp)
{
	int ret, pos;
	struct stat fno;

	ret = fstat(fp->fd, &fno);
	if (ret < 0)
		return false;

	pos = lseek(fp->fd, 0, SEEK_CUR);

	return pos == fno.st_size;
}

bool EEP_fexist(const char *path)
{
	int ret;
	struct stat fno;

	ret = stat(path, &fno);

	return (ret == 0);
}

bool EEP_fcopy(const char *src, const char *dst)
{
	int fsrc, fdst;
	unsigned char buffer[512];
	int res = true;
	int br, bw;

	fsrc = open(src, O_RDONLY);
	if (fsrc < 0)
		return false;

	fdst = open(dst, O_RDWR | O_CREAT);
	if (fdst < 0){
		close(fsrc);
		return false;
	}

	for (;;) {
		br = read(fsrc, buffer, sizeof(buffer));
		if (br < 0) {
			res = false;
			break;
		}
		if (br == 0)
			break;

		bw = write(fdst, buffer, br);
		if ((bw < 0) || bw < br) {
			res = false;
			break;
		}
	}

	close(fsrc);
	close(fdst);

	return res;
}

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

	res = unlink(path);

	return (res == 0);
}

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

	if (!SD_begin())
		return false;

	ret = open(path, mode);
	if (ret < 0) {
		file->fd = 0;
		return false;
	}

	file->fd = ret;
	return true;
}

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

	if (!SD_begin())
		return false;

	ret = rmdir(path);

	return ret == 0;
}

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

	if (!SD_begin())
		return false;

	ret = rename(path1, path2);
	
	return ret == 0;
}

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

	if (!SD_begin())
		return false;

	ret = unlink(path);

	return ret == 0;
}

bool SD_exists(const char *path)
{
	int ret;
	struct stat fno;

	if (!SD_begin())
		return false;

	ret = stat(path, &fno);

	return ret == 0;
}

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

	if (!SD_begin())
		return false;

	ret = mkdir(path, 0777);

	return ret == 0;
}

int file_write(File *fp, unsigned char *str, int len)
{
	int ret;

	ret = write(fp->fd, str, len);
	if (ret < 0)
		return -1;

	return ret;
}

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

int file_size(File *fp)
{
	int ret;
	struct stat fno;

	ret = fstat(fp->fd, &fno);
	if (ret < 0)
		return -1;

	return fno.st_size;
}

int file_position(File *fp)
{
	int ret;
	struct stat fno;

	ret = lseek(fp->fd, 0, SEEK_CUR);
	if (ret < 0)
		return -1;

	return ret;
}

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

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

	ret = lseek(fp->fd, pos, SEEK_SET);

	return ret == 0;
}

int file_read(File *fp)
{
	int ret;
	char c;

	ret = read(fp->fd, &c, 1);
	if (ret < 0)
		return -1;

	return c;
}

void system_reboot(int mode)
{
	exit(mode);
}

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