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

// Replace with your WiFi credentials
const char* ssid = "Wokwi-GUEST"; // set wifi
const char* password = "";

// ThingSpeak channel details
unsigned long channel = 2561267; // set id thingspeak
const char* readAPIKey = "8BZJ6QF7VXXDRUQ2";

// Define relay pins
const int relay1 = 13; 
const int relay2 = 12;
const int relay3 = 14;
const int relay4 = 27;

// WiFi client
WiFiClient client;

void setup() {
  Serial.begin(115200);
  
  // Initialize the relay pins
  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);
  digitalWrite(relay1, LOW);
  digitalWrite(relay2, LOW);
  digitalWrite(relay3, LOW);
  digitalWrite(relay4, LOW);

  // Connect to WiFi
  Serial.println("Connecting to WiFi...");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  // Initialize ThingSpeak
  ThingSpeak.begin(client);
}

void loop() {
  // Read data from ThingSpeak
  int relay_1 = ThingSpeak.readIntField(channel, 1, readAPIKey);
  int relay_2 = ThingSpeak.readIntField(channel, 2, readAPIKey);
  int relay_3 = ThingSpeak.readIntField(channel, 3, readAPIKey);
  int relay_4 = ThingSpeak.readIntField(channel, 4, readAPIKey);

  // Check if the read was successful
  if (ThingSpeak.getLastReadStatus() != 200) {
    Serial.println("Error reading from ThingSpeak");
  } else {
    // Control relay1
    if (relay_1 == 1) {
      pinMode(relay1,OUTPUT);
      digitalWrite(relay1, HIGH);
      Serial.println("MO RELAY1");
    } else {
      pinMode(relay1,OUTPUT);
      digitalWrite(relay1, LOW);
      Serial.println("TAT RELAY1");
    }

    // Control relay2
    if (relay_2 == 1) {
      pinMode(relay2,OUTPUT);
      digitalWrite(relay2, HIGH);
      Serial.println("MO RELAY2");
    } else {
      pinMode(relay2,OUTPUT);
      digitalWrite(relay2, LOW);
      Serial.println("TAT RELAY2");
    }

    // Control relay3
    if (relay_3 == 1) {
      pinMode(relay3,OUTPUT);
      digitalWrite(relay3, HIGH);
      Serial.println("MO RELAY3");
    } else {
      pinMode(relay3,OUTPUT);
      digitalWrite(relay3, LOW);
      Serial.println("TAT RELAY3");
    }

    // Control relay4
    if (relay_4 == 1) {
      pinMode(relay4,OUTPUT);
      digitalWrite(relay4, HIGH);
      Serial.println("MO RELAY4");
    } else {
      pinMode(relay4,OUTPUT);
      digitalWrite(relay4, LOW);
      Serial.println("TAT RELAY4");
    }

    // Print relay states
    Serial.println("Relay states:");
    Serial.print("Relay 1: ");
    Serial.println(relay_1);
    Serial.print("Relay 2: ");
    Serial.println(relay_2);
    Serial.print("Relay 3: ");
    Serial.println(relay_3);
    Serial.print("Relay 4: ");
    Serial.println(relay_4);
  }

  // Wait for 5 seconds before next read
  delay(5000);
}