import processing.serial.*;
Serial port;
char buzzer = '1';
char led = '0';
color defaultButton = color(255, 255, 255);
color hoverButton = color(150, 150, 150);
color defaultText = color(0, 102, 153);
color hoverText = color(0, 0, 0);

int ledAlarmTicks = 10;
int ledTicks = 0;
boolean ledOn = false;
boolean aLedOn = false;

int ledBlinkX = 10;
int ledBlinkY = 10;
int ledBlinkW = 180;
int ledBlinkH = 50;
color ledBlinkTextColor = defaultText;
color ledBlinkButtonColor = defaultButton;

int ledToggleX = 200;
int ledToggleY = 10;
int ledToggleW = 230;
int ledToggleH = 50;
color ledToggleTextColor = defaultText;
color ledToggleButtonColor = defaultButton;

void setup(){
  size(500, 500);
  port = new Serial(this, "COM3", 9600);
  port.bufferUntil('\n');
}

void draw(){
   PFont font = createFont(PFont.list()[0], 32);
   background(0, 0, 0);
   stroke(256);
   fill(ledBlinkButtonColor);
   rect(ledBlinkX, ledBlinkY, ledBlinkW, ledBlinkH);
   textFont(font);
   fill(ledBlinkTextColor);
   text("BLINK LED", 20, 45);

   fill(ledToggleButtonColor);
   rect(ledToggleX, ledToggleY, ledToggleW, ledToggleH);
   textFont(font);
   fill(ledToggleTextColor);
   text("TOGGLE LED", 220, 45);

   // Handle loops
   if(ledOn){
     if(ledTicks>=ledAlarmTicks){
       ledTicks = 0;
       port.write(led);
     }
     ledTicks++;
   }else{
    ledTicks = 0;
   }

   // Handle hover
   if(overRect(ledBlinkX, ledBlinkY, ledBlinkW, ledBlinkH)){
     resetButtons();
     ledBlinkTextColor = hoverText;
     ledBlinkButtonColor = hoverButton;
   }else if(overRect(ledToggleX, ledToggleY, ledToggleW, ledToggleH)){
     resetButtons();
     ledToggleTextColor = hoverText;
     ledToggleButtonColor = hoverButton;
   }else{
      resetButtons();
   }
}

void mousePressed(){
   if(overRect(ledBlinkX, ledBlinkY, ledBlinkW, ledBlinkH)){
     ledOn = !ledOn;
     if(!ledOn && aLedOn){
         port.write(led);
     }
   }else if(overRect(ledToggleX, ledToggleY, ledToggleW, ledToggleH)){
     port.write(led);
   }
}

void serialEvent(Serial port){
   float in = float(port.readStringUntil('\n'));
   if(in == 1){
      aLedOn = true;
   }else if(in == 0){
      aLedOn = false;
   }
}

void resetButtons(){
     ledBlinkTextColor = defaultText;
     ledBlinkButtonColor = defaultButton;
     ledToggleTextColor = defaultText;
     ledToggleButtonColor = defaultButton;
}

boolean overRect(int x, int y, int width, int height){
  if (mouseX >= x && mouseX <= x+width && mouseY >= y && mouseY <= y+height){
    return true;
  }else{
    return false;
  }
}