/*Explanation and role of each button of my code 

BUTTON SET-UP
------------------------------------------
Button_a(green) ---> will be connected to Uno pin 2
Button_b(white) ---> will be connected to Uno pin 12
Button_c(yellow) ---> will be connected to Uno pin 8
Button_d(black) ---> will be connected to Uno pin 7
------------------------------------------
LED SET-UP
------------------------------------------
Orange-LED ---> will be connected to Uno pin 5
Blue-LED ---> will be connected to Uno pin 6
Red-LED ---> will be connected to Uno pin 9
Green-LED ---> will be connected to Uno pin 10
------------------------------------------
SEVO PWM SET-UP
------------------------------------------
Servo PWM---> will be connectec to Uno pin 11
*/

#include <Servo.h>  // OPEN the servo library
Servo Servo1;      // give a name to the servo that I will use 
int ranNum;       // Random Number library 
unsigned long previousTime1 = 0;
unsigned long previousTime2 = 0;
unsigned long previousTime3 = 0;
unsigned long previousTime4 = 0;
// here is the blinking time 
const unsigned long eInterval1 = 1500;
const unsigned long eInterval2 = 6000;
const unsigned long eInterval3 = 8000;
const unsigned long eInterval4 = 10000;


void setup() {
  /*------------------------------------------
  In he following code I defined all of the set up for the
  the LED and the the differebt buttons. output will be for the LED
  and input will be for the buttons
  -------------------------------------------*/
  pinMode(5, OUTPUT);        // LED orange
  pinMode(6, OUTPUT);       // LED blue
  pinMode(9, OUTPUT);      // LED red
  pinMode(10, OUTPUT);    // LED green
  pinMode(2, INPUT);     // Button_a
  pinMode(12, INPUT);   // Button_b
  pinMode(8, INPUT);   // Button_c
  pinMode(7, INPUT);  // Button_d
  Servo1.attach(11); // for the servo motor
  Serial.begin(9600);

/* The following code set all of the LED to be off as deffault 
when*/

  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
}
void loop() {
  unsigned long currentMillis = millis(); // here is important to difine the actual time 

 
  if(digitalRead(12)== HIGH){
    if (currentMillis - previousTime1 >= eInterval1){
      digitalWrite(5, LOW);
    }
    if (currentMillis - previousTime2 >= eInterval2){
      digitalWrite(6, LOW);
      previousTime1=currentMillis; // starting from here led yel is off
      digitalWrite(5, HIGH);
    }
    if (currentMillis - previousTime3 >= eInterval3){
      digitalWrite(9, LOW);
      previousTime2=currentMillis;
      digitalWrite(6, HIGH);
      previousTime1=currentMillis;
      digitalWrite(5, HIGH);
    }
    if (currentMillis - previousTime4 >= eInterval4){
      digitalWrite(10, LOW);
      previousTime3=currentMillis; 
      digitalWrite(9, HIGH);
      previousTime1=currentMillis;
      digitalWrite(5, HIGH);
      previousTime2=currentMillis;
      digitalWrite(6, HIGH);
      
    }
    if(eInterval4 < currentMillis){
      digitalWrite(10, HIGH);
    }
  }












 
  
  /*If button-a is pressed the led green, red, blue,orange
  blink repectively twice and reverse*/

  if(digitalRead(2)==HIGH){
    //Green blink
    digitalWrite(10, LOW);
    delay(100);
    digitalWrite(10, HIGH);
    //Red blink
    digitalWrite(9,LOW);
    delay(100);
    digitalWrite(9, HIGH);
    //Blue blink
    digitalWrite(6,LOW);
    delay(100);
    digitalWrite(6, HIGH);
    //Orange blink
    digitalWrite(5,LOW);
    delay(100);
    digitalWrite(5, HIGH);
     
    /*Starting fron the code bellow the reverse blink
    is activate*/
    //Orange blink
    delay(500);
    digitalWrite(5, LOW);
    delay(100);
    digitalWrite(5, HIGH);
    //Blue blink
    digitalWrite(6,LOW);
    delay(100);
    digitalWrite(6, HIGH);
    //Red blink
    digitalWrite(9,LOW);
    delay(100);
    digitalWrite(9, HIGH);
    //Green blink
    digitalWrite(10,LOW);
    delay(100);
    digitalWrite(10, HIGH);
    Serial.println("Hello world!");

    
  }
  /* If button d is pressed it activate couple move (servo and LED)*/
  if(digitalRead(7)==HIGH){
    Servo1.write(0);    // servo is on 0degree
    Servo1.write(25);  // servo turn 25 degree
    // Led Blue blink 2 times
    digitalWrite(6, LOW);
    delay(500);
    digitalWrite(6, HIGH);
    delay(500);
    digitalWrite(6, LOW);
    delay(500);
    digitalWrite(6, HIGH);
    delay(1000);

    Servo1.write(81);  // servo turn 81 degree
    // Led Green blink 3 times
    digitalWrite(10, LOW);
    delay(500);
    digitalWrite(10, HIGH);
    delay(500);
    digitalWrite(10, LOW);
    delay(500);
    digitalWrite(10, HIGH);
    delay(500);
    digitalWrite(10, LOW);
    delay(500);
    digitalWrite(10, HIGH);

    Servo1.write(144);   // servo turn 144 degree
    // Led red and oranf blink
    digitalWrite(9, LOW);
    delay(500);
    digitalWrite(9, HIGH);

    digitalWrite(5, LOW);
    delay(500);
    digitalWrite(5, HIGH);
    Servo1.write(0);
  }
  /* if button c is selected the servoo is activated*/
  if(digitalRead(8)== HIGH){

    Servo1.write(9);    // servo turn 9 degree
    delay(1000);       // wait 1 second before thwe next move
    Servo1.write(100);// servo turn 100 degree
    delay(1000);
  }

  

  
}