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

// Define WiFi credentials
char ssid[] = "Wokwi-GUEST";      // network SSID (name)
char pass[] = "";                 // network password
WiFiClient client;

// ThingSpeak channel details
unsigned long myChannelNumber = 2630070;               //channel number taken from cloud
const char *myWriteAPIKey = "2HOUWXCGEEGEBPLA";        //WriteAPI key of cloud

// Defining Sensor Pins
const int pirPin1 = 35;
const int pirPin2 = 32;
const int pirPin3 = 33;
const int pirPin4 = 25;
const int pirPin5 = 26;

const int ldrPin = 34;
const float GAMMA = 0.7;
const float RL10 = 50;

const int ledPin1 = 2;
const int ledPin2 = 0;
const int ledPin3 = 4;
const int ledPin4 = 16;
const int ledPin5 = 17;
const int ledPin6 = 5;
const int ledPin7 = 18;

// Defining Status Variables
bool motion1 = false;
bool motion2 = false;
bool motion3 = false;
bool motion4 = false;
bool motion5 = false;

bool ledStatus1 = false;
bool ledStatus2 = false;
bool ledStatus3 = false;
bool ledStatus4 = false;
bool ledStatus5 = false;
bool ledStatus6 = false;
bool ledStatus7 = false;

void setup() {
  Serial.begin(115200);
  Serial.print("Smart Street Lights System\n");
  
  // Initialize ThingSpeak
  ThingSpeak.begin(client);

  // Connect or reconnect to WiFi
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("\nAttempting to connect to SSID: ");
    Serial.println(ssid);
    while (WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass);
      Serial.print(".");
      delay(5000);
    }
    Serial.println("\nConnected!");
  }

  pinMode(pirPin1, INPUT);
  pinMode(pirPin2, INPUT);
  pinMode(pirPin3, INPUT);
  pinMode(pirPin4, INPUT);
  pinMode(pirPin5, INPUT);
  pinMode(ldrPin, INPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  pinMode(ledPin5, OUTPUT);
  pinMode(ledPin6, OUTPUT);
  pinMode(ledPin7, OUTPUT);
}

void loop() {
  int ldrStatus = analogRead(ldrPin);
  ldrStatus = map(ldrStatus, 4095, 0, 1024, 0); //change the LDR sensor reading value from the Arduino ADC value to the ESP3 ADC value
  float voltage = ldrStatus / 1024.*5;
  float resistance = 2000 * voltage / (1-voltage/5);
  float lux = pow(RL10*1e3*pow(10,GAMMA)/resistance,(1/GAMMA));

  int pirStatus1 = digitalRead(pirPin1);
  int pirStatus2 = digitalRead(pirPin2);
  int pirStatus3 = digitalRead(pirPin3);
  int pirStatus4 = digitalRead(pirPin4);
  int pirStatus5 = digitalRead(pirPin5);

  Serial.print("\nLDR: ");
  Serial.print(ldrStatus);
  Serial.print("\nPIR 1: ");
  Serial.print(pirStatus1);
  Serial.print(" | PIR 2: ");
  Serial.print(pirStatus2);
  Serial.print(" | PIR 3: ");
  Serial.print(pirStatus3);
  Serial.print(" | PIR 4: ");
  Serial.print(pirStatus4);
  Serial.print(" | PIR 5: ");
  Serial.print(pirStatus5);

  if (pirStatus1 == HIGH) {
    motion1 = true;
  } else if (pirStatus2 == HIGH) {
    motion2 = true;
  } else if (pirStatus3 == HIGH) {
    motion3 = true;
  } else if (pirStatus4 == HIGH) {
    motion4 = true;
  } else if (pirStatus5 == HIGH) {
    motion5 = true;
  } else {
    motion1 = false;
    motion2 = false;
    motion3 = false;
    motion4 = false;
    motion5 = false;
  }

  if (lux > 300) {
    if (!motion1 && !motion2 && !motion3 && !motion4 && !motion5) {
      turnOffAllLEDs();
    } else if (ledStatus1 || ledStatus2 || ledStatus3 || ledStatus4 || ledStatus5) {
      turnOffAllLEDs();
    }
  } else {
      if (motion1) {
        digitalWrite(ledPin1, HIGH);
        digitalWrite(ledPin2, HIGH);
        digitalWrite(ledPin3, HIGH);
        ledStatus1 = true;
        ledStatus2 = true;
        ledStatus3 = true;
    } if (motion2) {
        digitalWrite(ledPin2, HIGH);
        digitalWrite(ledPin3, HIGH);
        digitalWrite(ledPin4, HIGH);
        ledStatus2 = true;
        ledStatus3 = true;
        ledStatus4 = true;
    } if (motion3) {
        digitalWrite(ledPin3, HIGH);
        digitalWrite(ledPin4, HIGH);
        digitalWrite(ledPin5, HIGH);
        ledStatus3 = true;
        ledStatus4 = true;
        ledStatus5 = true;
    } if (motion4) {
        digitalWrite(ledPin4, HIGH);
        digitalWrite(ledPin5, HIGH);
        digitalWrite(ledPin6, HIGH);
        ledStatus4 = true;
        ledStatus5 = true;
        ledStatus6 = true;
    } if (motion5) {
        digitalWrite(ledPin5, HIGH);
        digitalWrite(ledPin6, HIGH);
        digitalWrite(ledPin7, HIGH);
        ledStatus5 = true;
        ledStatus6 = true;
        ledStatus7 = true;
    } if (!motion1 && !motion2 && !motion3 && !motion4 && !motion5) {
        turnOffAllLEDs();
    }
  }

  // Set ThingSpeak fields with sensor values
  ThingSpeak.setField(1, digitalRead(ledPin1));
  ThingSpeak.setField(2, digitalRead(ledPin2));
  ThingSpeak.setField(3, digitalRead(ledPin3));
  ThingSpeak.setField(4, digitalRead(ledPin4));
  ThingSpeak.setField(5, digitalRead(ledPin5));
  ThingSpeak.setField(6, digitalRead(ledPin6));
  ThingSpeak.setField(7, digitalRead(ledPin7));

  // Write to the ThingSpeak channel
  int status = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  if (status == 200) {
    Serial.println("\nChannel update successful.");
  }

  delay(100);
}

void turnOffAllLEDs() {
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, LOW);
  digitalWrite(ledPin7, LOW);
  ledStatus1 = false;
  ledStatus2 = false;
  ledStatus3 = false;
  ledStatus4 = false;
  ledStatus5 = false;
  ledStatus6 = false;
  ledStatus7 = false;
}