#include<Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);

unsigned long currentMillis = 0;
const unsigned long btn_1Period = 5;
const unsigned long btn_2Period = 10;
const unsigned long btn_3Period = 15;
const unsigned long btn_4Period = 20;
const unsigned long btn_5Period = 25;
const unsigned long btn_6Period = 30;

const unsigned long interval1  = 1000;
const unsigned long interval2 = 2000;
const unsigned long interval3 = 3000;
const unsigned long interval4 = 4000;
const unsigned long interval5 = 4001;

unsigned long btn_1PrevMillis = 0;
unsigned long btn_2PrevMillis = 0;
unsigned long btn_3PrevMillis = 0;
unsigned long btn_4PrevMillis = 0;
unsigned long btn_5PrevMillis = 0;
unsigned long btn_6PrevMillis = 0;
unsigned long led_ChasePrevMillis = 0;


const int sw_1 = 2;
const int sw_2 = 3;
const int sw_3 = 4;
const int sw_4 = 5;
const int sw_5 = 6;
const int sw_6 = 7;

const int led_1 = 10;
const int led_2 = 11;
const int led_3 = 12;
const int led_4 = 13;

int state_1 = LOW;
int state_2 = LOW;
int state_3 = LOW;
int state_4 = LOW;
int state_5 = LOW;
int state_6 = LOW;

void setup() {
  lcd.init();         
  lcd.backlight();
  pinMode(sw_1, INPUT);
  pinMode(sw_2, INPUT);
  pinMode(sw_3, INPUT);
  pinMode(sw_4, INPUT);
  pinMode(sw_5, INPUT);
  pinMode(sw_6, INPUT);
  pinMode(led_1, OUTPUT);
  pinMode(led_2, OUTPUT);
  pinMode(led_3, OUTPUT);
  pinMode(led_4, OUTPUT);
  lcd.clear();
  lcd.setCursor(5, 0);
  lcd.print("Wellcome To");
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Fabric Shade Machine");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(4, 2);
  lcd.print("Machine On");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing.");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing..");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing...");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing....");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing.....");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing......");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing.......");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(0, 2);
  lcd.print("Initializing........");
  delay(200);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
  lcd.setCursor(4, 2);
  lcd.print("Machine Ready");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Sublime Greentex Ltd");
}

void loop() {
  // put your main code here, to run repeatedly:
  currentMillis = millis();
  buttonState_1();
  buttonState_2();
  buttonState_3();
  buttonState_4();  
  buttonState_5();
  buttonState_6();
}

void buttonState_1(){
  if (currentMillis - btn_1PrevMillis >= btn_1Period){
    btn_1PrevMillis = currentMillis;
    int a = digitalRead(sw_1);
    if (a == HIGH){
      state_1=!state_1;
      //digitalWrite(led_1, state_1);
      digitalWrite(led_1, HIGH);
      digitalWrite(led_2, LOW);
      digitalWrite(led_3, LOW);
      digitalWrite(led_4, LOW);
      state_2 = LOW;
      state_3 = LOW;
      state_4 = LOW;
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Sublime Greentex Ltd");
      lcd.setCursor(4, 2);
      lcd.print("Light 1 ON");
    }
  }
}

void buttonState_2(){
   if (currentMillis - btn_2PrevMillis >= btn_2Period){
    btn_2PrevMillis = currentMillis;
    int b = digitalRead(sw_2);
    if (b == HIGH){
      state_2=!state_2;
      //digitalWrite(led_2, state_2);
      digitalWrite(led_2, HIGH);
      digitalWrite(led_1, LOW);
      digitalWrite(led_3, LOW);
      digitalWrite(led_4, LOW);
      state_1 = LOW;
      state_3 = LOW;
      state_4 = LOW;
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Sublime Greentex Ltd");
      lcd.setCursor(4, 2);
      lcd.print("Light 2 ON");
    }
  }
}

void buttonState_3(){
  if (currentMillis - btn_3PrevMillis >= btn_3Period){
    btn_3PrevMillis = currentMillis;
    int c = digitalRead(sw_3);
    if (c == HIGH){
      state_3=!state_3;
      //digitalWrite(led_3, state_3);
      digitalWrite(led_3, HIGH);
      digitalWrite(led_2, LOW);
      digitalWrite(led_1, LOW);
      digitalWrite(led_4, LOW);
      state_2 = LOW;
      state_1 = LOW;
      state_4 = LOW;
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Sublime Greentex Ltd");
      lcd.setCursor(4, 2);
      lcd.print("Light 3 ON");
    }
  }
}

void buttonState_4(){
  if (currentMillis - btn_4PrevMillis >= btn_4Period){
    btn_4PrevMillis = currentMillis;
    int d = digitalRead(sw_4);
    if (d == HIGH){
      state_4=!state_4;
      //digitalWrite(led_4, state_4);
      digitalWrite(led_4, HIGH);
      digitalWrite(led_2, LOW);
      digitalWrite(led_3, LOW);
      digitalWrite(led_1, LOW);
      state_2 = LOW;
      state_3 = LOW;
      state_1 = LOW;
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Sublime Greentex Ltd");
      lcd.setCursor(4, 2);
      lcd.print("Light 4 ON");
    }
  }
}

void buttonState_5(){
  if (currentMillis - btn_5PrevMillis >= btn_5Period){
    btn_5PrevMillis = currentMillis;
    int e = digitalRead(sw_5);
    if (e == HIGH){
      state_5=!state_5;
      do{
      if (currentMillis - led_ChasePrevMillis > interval1 && currentMillis - led_ChasePrevMillis < interval2){
        lcd.clear();
        lcd.setCursor(0, 1);
        lcd.print("Sublime Greentex Ltd");
        lcd.setCursor(4, 2);
        lcd.print("Light Testing");
        digitalWrite (led_1,HIGH);
        digitalWrite (led_2,LOW);
        digitalWrite (led_3,LOW);
        digitalWrite (led_4,LOW);}

      if (currentMillis - led_ChasePrevMillis > interval2 && currentMillis - led_ChasePrevMillis < interval3){
        lcd.clear();
        lcd.setCursor(0, 1);
        lcd.print("Sublime Greentex Ltd");
        lcd.setCursor(4, 2);
        lcd.print("Light Testing");
        digitalWrite (led_1,LOW);
        digitalWrite (led_2,HIGH);
        digitalWrite (led_3,LOW);
        digitalWrite (led_4,LOW);}
      if (currentMillis - led_ChasePrevMillis > interval3 && currentMillis - led_ChasePrevMillis < interval4){
        lcd.clear();
        lcd.setCursor(0, 1);
        lcd.print("Sublime Greentex Ltd");
        lcd.setCursor(4, 2);
        lcd.print("Light Testing");
        digitalWrite (led_1,LOW);
        digitalWrite (led_2,LOW);
        digitalWrite (led_3,HIGH);
        digitalWrite (led_4,LOW);}

      if (currentMillis - led_ChasePrevMillis > interval4){
        lcd.clear();
        lcd.setCursor(0, 1);
        lcd.print("Sublime Greentex Ltd");
        lcd.setCursor(4, 2);
        lcd.print("Light Testing");
        digitalWrite (led_1,LOW);
        digitalWrite (led_2,LOW);
        digitalWrite (led_3,LOW);
        digitalWrite (led_4,HIGH);}

      if (currentMillis - led_ChasePrevMillis > interval5){
        led_ChasePrevMillis = currentMillis;
      }
      
      state_5 = LOW;
      }
      while(state_5 == HIGH);
      if(state_5 = LOW){
        digitalWrite (led_1,LOW);
        digitalWrite (led_2,LOW);
        digitalWrite (led_3,LOW);
        digitalWrite (led_4,LOW);
        }
      }
    }
  }



void buttonState_6(){
  if (currentMillis - btn_6PrevMillis >= btn_6Period){
    btn_6PrevMillis = currentMillis;
    int f = digitalRead(sw_6);
    if (f == HIGH){
      state_6=!state_6;
      if(state_6 == HIGH){
      state_1 = LOW;
      state_2 = LOW;
      state_3 = LOW;
      state_4 = LOW;
      state_5 = LOW;
      //digitalWrite(led_1, state_1);
      digitalWrite(led_1, LOW);
      digitalWrite(led_2, LOW);
      digitalWrite(led_3, LOW);
      digitalWrite(led_4, LOW);
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Sublime Greentex Ltd");
      lcd.setCursor(4, 2);
      lcd.print("All Lights OFF");
      delay(1500);
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Sublime Greentex Ltd");
    }
  }
  }
}