#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include "Font_Data.h"

// Define the number of devices we have in the chain and the hardware interface
// NOTE: These pin numbers will probably not work with your hardware and may
// need to be adapted
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_CLK_ZONES 2
#define ZONE_SIZE 8
#define MAX_DEVICES (MAX_CLK_ZONES * ZONE_SIZE)

#define ZONE_UPPER  1
#define ZONE_LOWER  0


//#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
//#define MAX_DEVICES 8 // Define the number of displays connected
#define CLK_PIN    13 // CLK or SCK
#define DATA_PIN   11 // DATA or MOSI
#define CS_PIN     10 // CS or SS
#define SPEED_TIME 75 // Speed of the transition
#define PAUSE_TIME  0
#define MAX_MESG   20

// Hardware SPI connection
MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

// Hardware adaptation parameters for scrolling
bool invertUpperZone = false;

// ****** UTF8-Decoder: convert UTF8-string to extended ASCII *******
static byte c1;  // Last character buffer

// Convert a single Character from UTF8 to Extended ASCII
// Return "0" if a byte has to be ignored
byte utf8ascii(byte ascii) {
    if ( ascii<128 )   // Standard ASCII-set 0..0x7F handling  
    {   c1=0; 
        //Serial.println((unsigned int)ascii);
        return( ascii ); 
    }

    // get previous input
    byte last = c1;   // get last char
    c1=ascii;         // remember actual character

    switch (last)     // conversion depending on first UTF8-character
    {   case 0xE0: 
          return  (ascii);  
        break;
        case 0xB8: 
            // B8,81(129)  ก - ฮ 
          if ((ascii+32)>=161 && (ascii+32)<=207) {
            // ก 81 = 129 --> +32 --> 161
           // Serial.println((unsigned int)ascii+32);
            return  (ascii);
          }
          // B8,B0(176)  สระ
          if ((ascii+32)>=208 && (ascii+32)<=218) {
            // ะ B0 = 176 --> +32 --> 208
            //Serial.println((unsigned int)ascii+32);
            return  (ascii);
          }
        break;
        case 0xB9:
          // B9,80(128)  สระ
          if ((ascii+96)>=224 && (ascii+96)<=231) {
            // เ 80 = 176 --> +96 --> 224
            //Serial.println((unsigned int)ascii+96);
            return  (ascii);
          } 
          // B9,B0(136)  วรรณยุก
          if ((ascii+96)>=232 && (ascii+96)<=238) {
            // ่ 88 = 136 --> +96 --> 208
            //Serial.println((unsigned int)ascii+96);
            return  (ascii);
          }
          // B9,B0(240)  ตัวเลขไทย ๑๒๓๔ู
          if ((ascii+96)>=240 && (ascii+96)<=249) {
            // ่ 88 = 142 --> +96 --> 240
            //Serial.println((unsigned int)ascii+96);
            return  (ascii);
          }
        break;
        case 0x82: 
          if(ascii==0xAC) 
            return(0x80);       // special case Euro-symbol
    }

    return  (0);                                     // otherwise: return zero, if character has to be ignored
}

// convert String object from UTF8 String to Extended ASCII
String utf8ascii(String s)
{       
        String r="";
        char c;
        for (int i=0; i<s.length(); i++)
        {       
                c = utf8ascii(s.charAt(i));
                if (c!=0) r+=c;
        }
        return r;
}

// In Place conversion UTF8-string to Extended ASCII (ASCII is shorter!)
void utf8ascii(char* s)
{       
        int k=0;
        char c;
        for (int i=0; i<strlen(s); i++)
        {
          Serial.println((unsigned char)s[i]);
                c = utf8ascii(s[i]);
                if (c!=0) 
                        s[k++]=c;
        }
        s[k]=0;
}



void setup() {
  // put your setup code here, to run once:
  Serial.begin(57600);

 invertUpperZone = (HARDWARE_TYPE == MD_MAX72XX::GENERIC_HW || HARDWARE_TYPE == MD_MAX72XX::PAROLA_HW);

  // initialise the LED display
  P.begin(MAX_CLK_ZONES);

  // Set up zones for 2 halves of the display
  P.setZone(ZONE_LOWER, 0, ZONE_SIZE - 1);
  P.setZone(ZONE_UPPER, ZONE_SIZE, MAX_DEVICES - 1);
  P.setFont(ThaiFont);



  char* s="เ";//s="๐๑๒๓๔๕๖๗๘๙";

  Serial.println("UTF8-decoder Test");
  Serial.print("Original: ");
  Serial.println(s);
  utf8ascii(s);


  //Serial.print("Extended ASCII-Version ");

}

void loop() {
  // put your main code here, to run repeatedly:

}