#include "U8glib.h"

#define MINI_LOGO

U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NONE); // I2C / TWI
long randomEightBall = 0;
int Button1 = 2;

void drawHexagon(void)
{
  u8g_uint_t w,h;

  w = u8g.getWidth();
  h = u8g.getHeight();

  u8g.drawLine(0,h/3,w/2,0);   
  u8g.drawLine(0,2*(h/3),w/2,h); 
  u8g.drawLine(w/2,0,w,h/3);   
  u8g.drawLine(w/2,h,w,2*(h/3));
}

void drawColorBox(void)
{
  u8g_uint_t w,h;
  u8g_uint_t r, g, b;
  
  w = u8g.getWidth()/32;
  h = u8g.getHeight()/8;
  for( b = 0; b < 4; b++ )
    for( g = 0; g < 8; g++ )
      for( r = 0; r < 8; r++ )
      {
        u8g.setColorIndex((r<<5) |  (g<<2) | b );
        u8g.drawBox(g*w + b*w*8, r*h, w, h);
      }
}

void drawLogo(uint8_t d)
{
#ifdef MINI_LOGO
    u8g.setFont(u8g_font_gdr17r);
    u8g.drawStr(0+d, 22+d, "U");
    u8g.setFont(u8g_font_gdr20n);
    u8g.drawStr90(17+d,8+d,"8");
    u8g.setFont(u8g_font_gdr17r);
    u8g.drawStr(39+d,22+d,"g");
    
    u8g.drawHLine(2+d, 25+d, 34);
    u8g.drawVLine(32+d, 22+d, 12);
#else
    u8g.setFont(u8g_font_gdr25r);
    u8g.drawStr(0+d, 30+d, "U");
    u8g.setFont(u8g_font_gdr30n);
    u8g.drawStr90(23+d,10+d,"8");
    u8g.setFont(u8g_font_gdr25r);
    u8g.drawStr(53+d,30+d,"g");
    
    u8g.drawHLine(2+d, 35+d, 47);
    u8g.drawVLine(45+d, 32+d, 12);
#endif
}

void drawShake(void) {

  u8g_uint_t w,h;

  if ( u8g.getMode() == U8G_MODE_R3G3B2 ) {
    drawColorBox();
  }

  w = u8g.getWidth()/2;
  h = u8g.getHeight()/2;

  u8g.setColorIndex(1);

  u8g.firstPage();
  do {
    u8g.drawCircle(w, h, 10);
  } while ( u8g.nextPage() );
  delay(30);
  u8g.firstPage();
  do {
    u8g.drawCircle(w, h, 20);
  } while ( u8g.nextPage() );
  delay(30);
  u8g.firstPage();
  do {
    u8g.drawCircle(w, h, 30);
  } while ( u8g.nextPage() );
  delay(30);
  u8g.firstPage();
  do {
    u8g.drawCircle(w, h, 40);
  } while ( u8g.nextPage() );
    delay(30);
  u8g.firstPage();
  do {
    u8g.drawCircle(w, h, 50);
  } while ( u8g.nextPage() );
    delay(30);
  u8g.firstPage();
  do {
    u8g.drawCircle(w, h, 60);
  } while ( u8g.nextPage() );

  //drawLogo(0);
  //drawURL();
}

void draw(void) {
  // graphic commands to redraw the complete screen should be placed here
  u8g.setFont(u8g_font_unifont);
  u8g.setFontPosCenter();
  u8g_uint_t w,h,Tw;

  w = u8g.getWidth()/2;
  h = u8g.getHeight()/2;
  Tw = 8; //Approxaimate width of Text Char
  

  switch (randomEightBall) {
    case 0:
      u8g.drawStr( int(w-((Tw*3)/2)), h, "Yes");
      break;
    case 1:
      u8g.drawStr( int(w-((Tw*2)/2)), h, "No");
      break;
    case 2:
      u8g.drawStr( int(w-((Tw*12)/2)), h, "I'm not sure");
      break;
    case 3:
      u8g.drawStr( int(w-((Tw*5)/2)), h, "Maybe");
      break;
    case 4:
      u8g.drawStr( int(w-((Tw*6)/2)), h, "likely");
      break;
    case 5:
      u8g.drawStr( int(w-((Tw*8)/2)), h, "unlikely");
      break;
    case 6:
      u8g.drawStr( int(w-((Tw*9)/2)), h, "try again");
      break;
    case 7:
      u8g.drawStr( int(w-((Tw*16)/2)), h, "Buy More Inventr");
      break;
  }
  delay(50);
}

void setup(void) {
  // assign default color value
  u8g.setColorIndex(1); // pixel on
  Serial.begin(9600);

  randomSeed(random(analogRead(0)));
  delay(30);

  pinMode(Button1, INPUT);


}

void loop(void) {
  // picture loop
  //randomEightBall = random(8);
  //Serial.println(randomEightBall);

  //u8g.firstPage();
  //do {
  //  drawShake();
  //} while ( u8g.nextPage() );

  //delay(500);

  //u8g.firstPage();
  //do {
  //  drawHexagon();
  //  draw();
 // } while ( u8g.nextPage() );

  while( digitalRead(Button1) == HIGH )
  {
      //Get Random Value
      randomEightBall = random(8);

      //Shake Animation
      drawShake();

      delay(100);

      //Start Draw of Result
      u8g.firstPage();
      do {
        //Draw Result
        drawHexagon();
        draw();
      } while ( u8g.nextPage() );

      //Print Value at end
      Serial.println(randomEightBall);
  };
}