#include <LiquidCrystal_I2C.h> 
#include <WiFi.h>
#include <ThingSpeak.h>

const int ldrPin = A14; //the number of the LDR pin 
const int pirAPin = 13;
const int pirBPin = 10;
const int pirCPin = 8;
const int streetLampAPin = 12;
const int streetLampBPin = 9;
const int streetLampCPin = 7;
const int mainSwitchPin = 2;

const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = 2574932 ;
const char* myApiKey = "7SH0QD85UOAFUXT7";
const char* server = "api.thingspeak.com";

bool lampAStatus = 0;
bool lampBStatus = 0;
bool lampCStatus = 0;

LiquidCrystal_I2C lcd(0x27,20,4); 
WiFiClient client;
void setup() 
{ 
  Serial.begin(9600); 
  pinMode(ldrPin, INPUT); //initialize the LDR pin as an input
  pinMode(streetLampAPin, OUTPUT); 
  pinMode(streetLampBPin, OUTPUT); 
  pinMode(streetLampCPin, OUTPUT); 
  pinMode(pirAPin, INPUT);
  pinMode(pirBPin, INPUT);
  pinMode(pirCPin, INPUT);
  lcd.init();
  lcd.clear();
  lcd.backlight();

  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);  //DEFAULT KEYWORDS
  while (WiFi.status() != WL_CONNECTED)    // dEFAUKT KEYWORD 
  {   
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  //WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}
void loop()
{ 
  int devicePowerStatus= digitalRead(mainSwitchPin);
  if(devicePowerStatus == HIGH)
  {
    int ldrStatus = analogRead(ldrPin); //read the status of the LDR value //check if the LDR status is <= 300 
    lcd.clear(); 
    if (ldrStatus <=300 ) 
    { 
      Serial.println("DARK OUTSIDE"); 
      lcd.setCursor(0,0); 
      lcd.print("DARK OUTSIDE");
      int pirAStatus = digitalRead(pirAPin);
      int pirBStatus = digitalRead(pirBPin);
      int pirCStatus = digitalRead(pirCPin);
      if(pirAStatus == HIGH)
      {
        Serial.println("Motion Detected, Street Lamp A Turned ON"); 
        lcd.setCursor(0, 1);
        lcd.print("Street Lamp A: ON");
        lampAStatus = 1;
        digitalWrite(streetLampAPin, HIGH);
      }
      else
      {
        lcd.setCursor(0, 1);
        lcd.print("Street Lamp A: OFF");
        lampAStatus = 0;
        digitalWrite(streetLampAPin, LOW);
      }

      if(pirBStatus == HIGH)
      {
        Serial.println("Motion Detected, Street Lamp B Turned ON"); 
        lcd.setCursor(0, 2);
        lcd.print("Street Lamp B: ON");
        lampBStatus = 1;
        digitalWrite(streetLampBPin, HIGH);
      }
      else
      {
        lcd.setCursor(0, 2);
        lcd.print("Street Lamp B: OFF");
        lampBStatus = 0;
        digitalWrite(streetLampBPin, LOW);
      }

      if(pirCStatus == HIGH)
      {
        Serial.println("Motion Detected, Street Lamp C Turned ON"); 
        lcd.setCursor(0, 3);
        lcd.print("Street Lamp C: ON");
        lampCStatus = 1;
        digitalWrite(streetLampCPin, HIGH);
      }
      else
      {
        lcd.setCursor(0, 3);
        lcd.print("Street Lamp C: OFF");
        lampCStatus = 0;
        digitalWrite(streetLampCPin, LOW);
      }
      delay(500);
    } 
    else
    { 
      Serial.println("Outside Bright, All Street Lamp Off");
      lcd.setCursor(0, 0);
      lcd.print("BRIGHTNESS OUTSIDE");
      lcd.setCursor(0, 1);
      lcd.print("Street Lamp A: OFF");
      lcd.setCursor(0, 2);
      lcd.print("Street Lamp B: OFF");
      lcd.setCursor(0, 3);
      lcd.print("Street Lamp C: OFF");

      lampAStatus = lampBStatus = lampCStatus = 0;
      digitalWrite(streetLampAPin, LOW);
      digitalWrite(streetLampBPin, LOW);
      digitalWrite(streetLampCPin, LOW);
      delay(1000);
    } 
    ThingSpeak.setField(1,lampAStatus);
    ThingSpeak.setField(2,lampBStatus);
    ThingSpeak.setField(3,lampCStatus);

    int x = ThingSpeak.writeFields(myChannelNumber,myApiKey);
    if(x == 200){
      Serial.println("Data pushed successfull");
    }else{
      Serial.println("Push error" + String(x));
    }
    Serial.println("---");

    delay(15000);
  }
  else
  {
    Serial.println("Street Lamp Monitoring Device Off");
    lcd.clear(); 
    delay(1000);
  }
}