#define BLYNK_TEMPLATE_ID "TMPLfrC_S4Un"
#define BLYNK_TEMPLATE_NAME "Quickstart Template"
#define BLYNK_AUTH_TOKEN "KAz_lDwglhD5qP5LFBRk7jSDjaBs8jlL"

// Your WiFi credentials.
// Set password to "" for open networks.
char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = "Wokwi-GUEST";
char pass[] = "";

//#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Preferences.h>
#include "DHTesp.h"
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
Preferences pref;

// define the GPIO connected with Relays and switches
#define RelayPin1 5  //D5
#define RelayPin2 18  //D18
#define RelayPin3 19  //D19
#define RelayPin4 4  //D4

#define SwitchPin1 13  //D13
#define SwitchPin2 12  //D12
#define SwitchPin3 14  //D14
#define SwitchPin4 26  //D26

#define wifiLed   2   //D2
#define DHTPIN 15 //D15  pin connected with DHT

//Change the virtual pins according yours
#define VPIN_BUTTON_1    V1
#define VPIN_BUTTON_2    V2
#define VPIN_BUTTON_3    V3
#define VPIN_BUTTON_4    V4
#define VPIN_BUTTON_C    V0

// Uncomment whatever type you're using!
#define DHTTYPE DHT22    // DHT 122


// Relay State
bool toggleState_1 = LOW; //Define integer to remember the toggle state for relay 1
bool toggleState_2 = LOW; //Define integer to remember the toggle state for relay 2
bool toggleState_3 = LOW; //Define integer to remember the toggle state for relay 3
bool toggleState_4 = LOW; //Define integer to remember the toggle state for relay 4

// Switch State
bool SwitchState_1 = LOW;
bool SwitchState_2 = LOW;
bool SwitchState_3 = LOW;
bool SwitchState_4 = LOW;

BlynkTimer timer;
int val = 0,va5, ge, t =15 ;
float tmp,hum = 0; 

int wifiFlag = 0;
int ledPin = 33;               
int inputPin = 27;               
int pirState,k;          
int v = 0;
//temp symbol
byte t1[8]={B00000, B00001, B00010, B00100, B00100, B00100, B00100, B00111,};
byte t2[8]={B00111, B00111, B00111, B01111,B11111, B11111, B01111, B00011,};
byte t3[8]={B00000, B10000, B01011, B00100, B00111, B00100, B00111, B11100,};
byte t4[8]={B11111, B11100, B11100, B11110,B11111, B11111, B11110, B11000,};

//humidity symbol
byte hum1[8]={B00000, B00001, B00011, B00011,B00111, B01111, B01111, B11111,};
byte hum2[8]={B11111, B11111, B11111, B01111,B00011, B00000, B00000, B00000,};
byte hum3[8]={B00000, B10000, B11000, B11000, B11100, B11110, B11110, B11111,};
byte hum4[8]={B11111, B11111, B11111, B11110, B11100, B00000, B00000, B00000,};

//Home Symbol
byte house1[8]={B00000, B00001, B00011, B00011, B00111, B01111, B01111, B11111,};
byte house2[8]={B11111, B11111, B11100, B11100, B11100, B11100, B11100, B11100,};
byte house3[8]={B00000, B10010, B11010, B11010, B11110, B11110, B11110, B11111,};
byte house4[8]={B11111, B11111, B11111, B10001, B10001, B10001, B11111, B11111,};

byte d[8] = { 0b00011,0b00011,0b00000,0b00000,0b00000,0b00000,0b00000,0b00000 };

byte Lck[] = { B01110, B10001, B10001, B11111, B11011, B11011, B11111, B00000 };

DHTesp temps;

// When App button is pushed - switch the state

BLYNK_WRITE(VPIN_BUTTON_1) {
  toggleState_1 = param.asInt();
  digitalWrite(RelayPin1, !toggleState_1);
  pref.putBool("Relay1", toggleState_1);
}

BLYNK_WRITE(VPIN_BUTTON_2) {
  toggleState_2 = param.asInt();
  digitalWrite(RelayPin2, !toggleState_2);
  pref.putBool("Relay2", toggleState_2);
}

BLYNK_WRITE(VPIN_BUTTON_3) {
  toggleState_3 = param.asInt();
  digitalWrite(RelayPin3, !toggleState_3);
  pref.putBool("Relay3", toggleState_3);
}

BLYNK_WRITE(VPIN_BUTTON_4) {
  toggleState_4 = param.asInt();
  digitalWrite(RelayPin4, !toggleState_4);
  pref.putBool("Relay4", toggleState_4);
}
BLYNK_WRITE(V5) {
  pirState = param.asInt();
  if(pirState == 0){
    digitalWrite(ledPin, LOW);
    k = 1;
    ge = 0;
  }
  else { 
    digitalWrite(ledPin, HIGH);
    k= 0;
    ge = 1;
  }
}
BLYNK_WRITE(VPIN_BUTTON_C) {
  all_SwitchOff();
}

void myTimer() 
{
  Blynk.virtualWrite(V7,tmp); 
  Blynk.virtualWrite(V6,hum);
}

void checkBlynkStatus() { // called every 3 seconds by SimpleTimer

  bool isconnected = Blynk.connected();
  if (isconnected == false) {
    wifiFlag = 1;
    digitalWrite(wifiLed, LOW);
    Serial.println("Blynk Not Connected");
  }
  if (isconnected == true) {
    wifiFlag = 0;
    digitalWrite(wifiLed, HIGH);
    Serial.println("Blynk Connected");
  }
}

BLYNK_CONNECTED() {
  // update the latest state to the server
  Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
  Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
  Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
  Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);

}


void manual_control()
{
  if (digitalRead(SwitchPin1) == LOW && SwitchState_1 == LOW) {
    digitalWrite(RelayPin1, LOW);
    toggleState_1 = HIGH;
    SwitchState_1 = HIGH;
    pref.putBool("Relay1", toggleState_1);
    Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
    Serial.println("Switch-1 on");
  }
  if (digitalRead(SwitchPin1) == HIGH && SwitchState_1 == HIGH) {
    digitalWrite(RelayPin1, HIGH);
    toggleState_1 = LOW;
    SwitchState_1 = LOW;
    pref.putBool("Relay1", toggleState_1);
    Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
    Serial.println("Switch-1 off");
  }
  if (digitalRead(SwitchPin2) == LOW && SwitchState_2 == LOW) {
    digitalWrite(RelayPin2, LOW);
    toggleState_2 = HIGH;
    SwitchState_2 = HIGH;
    pref.putBool("Relay2", toggleState_2);
    Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
    Serial.println("Switch-2 on");
  }
  if (digitalRead(SwitchPin2) == HIGH && SwitchState_2 == HIGH) {
    digitalWrite(RelayPin2, HIGH);
    toggleState_2 = LOW;
    SwitchState_2 = LOW;
    pref.putBool("Relay2", toggleState_2);
    Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
    Serial.println("Switch-2 off");
  }
  if (digitalRead(SwitchPin3) == LOW && SwitchState_3 == LOW) {
    digitalWrite(RelayPin3, LOW);
    toggleState_3 = HIGH;
    SwitchState_3 = HIGH;
    pref.putBool("Relay3", toggleState_3);
    Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
    Serial.println("Switch-3 on");
  }
  if (digitalRead(SwitchPin3) == HIGH && SwitchState_3 == HIGH) {
    digitalWrite(RelayPin3, HIGH);
    toggleState_3 = LOW;
    SwitchState_3 = LOW;
    pref.putBool("Relay3", toggleState_3);
    Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
    Serial.println("Switch-3 off");
  }
  if (digitalRead(SwitchPin4) == LOW && SwitchState_4 == LOW) {
    digitalWrite(RelayPin4, LOW);
    toggleState_4 = HIGH;
    SwitchState_4 = HIGH;
    pref.putBool("Relay4", toggleState_4);
    Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);
    Serial.println("Switch-4 on");
  }
  if (digitalRead(SwitchPin4) == HIGH && SwitchState_4 == HIGH) {
    digitalWrite(RelayPin4, HIGH);
    toggleState_4 = LOW;
    SwitchState_4 = LOW;
    pref.putBool("Relay4", toggleState_4);
    Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);
    Serial.println("Switch-4 off");
  }
}

void all_SwitchOff() {
  toggleState_1 = 0; digitalWrite(RelayPin1, HIGH); pref.putBool("Relay1", toggleState_1); Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1); delay(100);
  toggleState_2 = 0; digitalWrite(RelayPin2, HIGH); pref.putBool("Relay2", toggleState_2); Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2); delay(100);
  toggleState_3 = 0; digitalWrite(RelayPin3, HIGH); pref.putBool("Relay3", toggleState_3); Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3); delay(100);
  toggleState_4 = 0; digitalWrite(RelayPin4, HIGH); pref.putBool("Relay4", toggleState_4); Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4); delay(100);
  Blynk.virtualWrite(V7,tmp); 
  Blynk.virtualWrite(V6,hum);

}

void getRelayState()
{
  //Serial.println("reading data from NVS");
  toggleState_1 = pref.getBool("Relay1", 0);
  digitalWrite(RelayPin1, !toggleState_1);
  Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
  delay(200);
  toggleState_2 = pref.getBool("Relay2", 0);
  digitalWrite(RelayPin2, !toggleState_2);
  Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
  delay(200);
  toggleState_3 = pref.getBool("Relay3", 0);
  digitalWrite(RelayPin3, !toggleState_3);
  Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
  delay(200);
  toggleState_4 = pref.getBool("Relay4", 0);
  digitalWrite(RelayPin4, !toggleState_4);
  Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);
  delay(200);
}

void setup()
{
  Serial.begin(115200);;
  //Open namespace in read-write mode
  pref.begin("Relay_State", false);

  pinMode(RelayPin1, OUTPUT);
  pinMode(RelayPin2, OUTPUT);
  pinMode(RelayPin3, OUTPUT);
  pinMode(RelayPin4, OUTPUT);

  pinMode(wifiLed, OUTPUT);

  pinMode(SwitchPin1, INPUT_PULLUP);
  pinMode(SwitchPin2, INPUT_PULLUP);
  pinMode(SwitchPin3, INPUT_PULLUP);
  pinMode(SwitchPin4, INPUT_PULLUP);
temps.setup(t, DHTesp::DHT22);
pinMode(ledPin, OUTPUT);      
pinMode(inputPin, INPUT_PULLUP);

lcd.init();
lcd.backlight();

  //During Starting all Relays should TURN OFF
  digitalWrite(RelayPin1, !toggleState_1);
  digitalWrite(RelayPin2, !toggleState_2);
  digitalWrite(RelayPin3, !toggleState_3);
  digitalWrite(RelayPin4, !toggleState_4);

  digitalWrite(wifiLed, LOW);

  lcd.setCursor(0,0);
lcd.print("EPI POLYTECHNIQUE");
lcd.setCursor(8,1);
lcd.print("2023");
lcd.setCursor(0,2);
lcd.print("--------------------");
lcd.setCursor(9,3);
lcd.print("- 4 EM A");
delay(3000);
lcd.clear();
lcd.createChar(6, Lck);
lcd.createChar(1,house1);
lcd.createChar(2,house2);
lcd.createChar(3,house3);
lcd.createChar(4,house4);
lcd.setCursor(1,2);
lcd.write(1);
lcd.setCursor(1,3);
lcd.write(2);
lcd.setCursor(2,2);
lcd.write(3);
lcd.setCursor(2,3);
lcd.write(4);

lcd.setCursor(17,2);
lcd.write(1);
lcd.setCursor(17,3);
lcd.write(2);
lcd.setCursor(18,2);
lcd.write(3);
lcd.setCursor(18,3);
lcd.write(4);

lcd.setCursor(19,0); 
lcd.write(6);
lcd.setCursor(9,0);
lcd.print("connected-");
lcd.setCursor(2,1);
lcd.print("maison intelligente ");
lcd.setCursor(6,2);
lcd.print("USING IOT");
delay(3000);

Blynk.virtualWrite(V7, pirState);
timer.setInterval(1000L, myTimer); 

  WiFi.begin(ssid, pass);
  timer.setInterval(2000L, checkBlynkStatus); // check if Blynk server is connected every 2 seconds
    Blynk.config(auth);
  delay(1000);

  getRelayState(); //fetch data from NVS Flash Memory
  //  delay(1000);
}

void loop()
{
  Blynk.run();
  timer.run(); // Initiates SimpleTimer

  manual_control();
 val = digitalRead(23);  
  if(val == 1)  
  {  
   digitalWrite(2,va5);    
  } 

else{
      digitalWrite(2,LOW);  
}

TempAndHumidity x = temps.getTempAndHumidity();
tmp = x.temperature;
hum = x.humidity;

  v = digitalRead(inputPin); 
  if (v == HIGH) { 
    if (k == 1)   {
          digitalWrite(ledPin, LOW);  
          k = 0 ;
          ge = 0;
    }   
    else if (k == 0)   {
          digitalWrite(ledPin, HIGH);
          k = 1; 
          ge = 1;
    }       
  }

  if (RelayPin1 == 1){
   lcd.clear();
    lcd.setCursor(19,0); 
  lcd.write(6);
  lcd.setCursor(0, 1);
  lcd.print("SW_1= ");
  lcd.print("ON ");
  }
  else{
     lcd.clear();
      lcd.setCursor(19,0); 
  lcd.write(6);
      lcd.setCursor(0, 1);
  lcd.print("SW_1= ");
  lcd.print("OFF");
  }     
  if (RelayPin2 == 1){
    
  
  lcd.setCursor(11, 1);
  lcd.print("SW_2= ");
  lcd.print("ON ");
  }
  else{
      lcd.setCursor(11, 1);
  lcd.print("SW_2= ");
  lcd.print("OFF");
  }     
  if (RelayPin3 == 1){
   
  lcd.setCursor(0, 2);
  lcd.print("SW_3= ");
  lcd.print("ON ");
  }
  else{
    
      lcd.setCursor(0, 2);
  lcd.print("SW_3= ");
  lcd.print("OFF");
  }     
  if (RelayPin4 == 1){
    
  lcd.setCursor(11, 2);
  lcd.print("SW_4= ");
  lcd.print("ON ");
  }
  else{
    
      lcd.setCursor(11, 2);
  lcd.print("SW_4= ");
  lcd.print("OFF");
  }     
    if (va5 == 1){
    
  lcd.setCursor(0, 3);
  lcd.print("OD_L= ");
  lcd.print("ON ");
  }
  else{
    
      lcd.setCursor(0, 3);
  lcd.print("OD_L= ");
  lcd.print("OFF");
  }     
   
  
  lcd.clear();
  lcd.createChar(1,t1);
  lcd.createChar(2,t2);
  lcd.createChar(3,t3);
  lcd.createChar(4,t4);
  lcd.createChar(5, d);
  lcd.createChar(6, Lck);

  lcd.setCursor(19,0); 
  lcd.write(6);
  lcd.setCursor(1,1); 
  lcd.write(1);
  lcd.setCursor(1,2); 
  lcd.write(2);
  lcd.setCursor(2,1); 
  lcd.write(3);
  lcd.setCursor(2,2); 
  lcd.write(4);
  lcd.setCursor(4,1);
  lcd.print("Temperature :");
  lcd.setCursor(7,2);
  lcd.print(tmp);
  lcd.setCursor(11,2);
  lcd.write(5);
  lcd.setCursor(12,2);
  lcd.print("C");

  delay(750);
  lcd.clear();

  lcd.createChar(1,hum1);
  lcd.createChar(2,hum2);
  lcd.createChar(3,hum3);
  lcd.createChar(4,hum4);
  
  lcd.setCursor(19,0); 
  lcd.write(6);
  lcd.setCursor(3,1);
  lcd.write(1);
  lcd.setCursor(3,2);
  lcd.write(2);
  lcd.setCursor(4,1);
  lcd.write(3);
  lcd.setCursor(4,2);
  lcd.write(4);
  lcd.setCursor(6,1);
  lcd.print("Humidity :");
  lcd.setCursor(7,2);
  lcd.print(hum);
  lcd.setCursor(12,2);
  lcd.print("%");
  delay(750);
 
}