#include <stdio.h>
  #include <sys/types.h>
  #include <unistd.h>
  #include <string.h>
  #include <time.h>

  #include <stdbool.h>
  #include <termios.h>

  #include "printx.h"

  #include "ui.h"

  #include "bus.h"

  #include "usb.h"

  #include "pump.h"

  
  #define	TIME_LENGTH			24
  #define	HEADER_TEXT_LENGTH	24

  #define	LOG_LINES			35

  #define	LOG_LENGTH			82

  #define	IPS					2

  #define	SCREEN_TIME			1000000/IPS

  #define	MAX_FILENAME_LENGTH	30

  #define	SC_HOME				0

  #define	SC_MAIN				1

  char			started[TIME_LENGTH];
  char			uid[HEADER_TEXT_LENGTH];
  char			cmd[LOG_LENGTH];
  pid_t			mainPid;
  bool			heat = false;
  bool			pump = false;

  unsigned int	temp = 1;
  unsigned int	debit = 1;

  struct			termios old={0};
  bool			uiStop = false;
  int				actScreen = SC_HOME;

  
  void stopUI()
  {
  	uiStop = true;
  }

  void setHeat(bool s)
  {
  	heat = s;
  }
  
  void setPump(bool s)
  {
  	pump = s;
  }
  
  void setTemp(unsigned int t)
  {
  	temp = t;
  }
  
  void setDebit(unsigned int d)
  {
  	debit = d;
  }
  

  int calculateInteraction(int act, int x, int y)
  {

  	char			filename[MAX_FILENAME_LENGTH];
  	FILE*			f = NULL;
  	unsigned char	ret;

  	switch(act)
  	{
  		case SC_HOME:
  			return act;
  		case SC_MAIN:

  			strcpy(filename, "map/main.map");

  			break;
  		default:

  			printx(ERROR, UI, "Unrecognized state %d\n", act);

  			return act;
  	}
  
  	f = fopen(filename, "r");
  	if(f == NULL)
  	{
  		printx(ERROR, UI, "The selected map is unopenable\n");
  		return act;
  	}

  
  	fseek(f, x + y*320, SEEK_SET);
  

  	ret = fgetc(f);
  	printx(DEBUG, UI, "Ret is %02X\n", ret);
  
  	if(ret == 1)
  	{
  		setVolWanted(1);
  		setCoffeeWanted();
  	}
  	else if(ret == 2)
  	{
  		setVolWanted(2);
  		setCoffeeWanted();
  	}

  
  	fclose(f);

  	
  	return act;
  }
  

  void processScreen()
  {

  	int x = -1;
  	int y = -1;

  	if(actScreen == SC_HOME)
  	{

  		if(uid[0] == '\0')

  			return;
  		else
  		{
  			actScreen = SC_MAIN;

  			displayPicture("img/main.rgb");

  		}
  	}

  	else if(actScreen == SC_MAIN)
  	{
  		if(screenTouched(&x, &y))

  			actScreen = calculateInteraction(actScreen, x, y);

  	}

  }
  

  void* drawUI(void* we)
  {

  	while(!uiStop)

  	{

  		processScreen();

  		usleep(SCREEN_TIME);
  	}
  
  	return NULL;
  }

  void setTagName(char* tag)
  {

  	//time_t now = time(NULL);

  	strcpy(uid, tag);

  	//strftime(uidDate, HEADER_TEXT_LENGTH, "%F-%T:%d", localtime(&now));

  }
  

  void initUILog()
  {

  	cmd[0]='\0';

  	started[0]='\0';
  	mainPid = getpid();

  	uid[0]='\0';

  	initUSB();

  }
  

  void setStartTime(char* sT)
  {
  	strcpy(started, sT);
  }