#include <Wire.h>
#include <DHT.h>
#include <ThingSpeak.h>

// Define pins
#define PIR_PIN 4        // GPIO pin for PIR motion sensor
#define BUTTON_PIN 16     // GPIO pin for smart switch (push button)
#define LED_PIN 17        // GPIO pin for LED
#define DHT_PIN 2         // GPIO pin for DHT22 sensor

// Define ThingSpeak parameters
const int THINGSPEAK_CHANNEL_ID =2383218; // Replace with your ThingSpeak channel ID
const char* THINGSPEAK_API_KEY ="X53XZTLGY7Q4T9GT";  // Replace with your ThingSpeak API key

// Create DHT sensor object
DHT dht(DHT_PIN, DHT22);

// Function prototype
void updateThingSpeak(float temperature, float humidity, int motionStatus, int switchStatus);

void setup() {
  Serial.begin(115200);

  // Initialize DHT sensor
  dht.begin();

  // Initialize GPIO pins
  pinMode(PIR_PIN, INPUT);
  pinMode(BUTTON_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  // Read sensor values
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  int motionStatus = digitalRead(PIR_PIN);
  int switchStatus = digitalRead(BUTTON_PIN);

  // Update ThingSpeak
  updateThingSpeak(temperature, humidity, motionStatus, switchStatus);

  // Your automation logic here

  // Example: print sensor values to Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Humidity: ");
  Serial.print(humidity);
  Serial.print("%, Motion: ");
  Serial.print(motionStatus);
  Serial.print(", Switch: ");
  Serial.println(switchStatus);

  // Automation logic
  if (motionStatus == HIGH) {
    // Motion detected, turn on the lights
    digitalWrite(LED_PIN, HIGH);
  } else {
    // No motion, turn off the lights
    digitalWrite(LED_PIN, LOW);
  }

  delay(10000);  // Adjust delay as needed
}

void updateThingSpeak(float temperature, float humidity, int motionStatus, int switchStatus) {
  // Set ThingSpeak fields
  ThingSpeak.setField(1, temperature);
  ThingSpeak.setField(2, humidity);
  ThingSpeak.setField(3, motionStatus);
  ThingSpeak.setField(4, switchStatus);

  // Update ThingSpeak
  int status = ThingSpeak.writeFields(THINGSPEAK_CHANNEL_ID, THINGSPEAK_API_KEY);

  if (status == 200) {
    Serial.println("ThingSpeak update successful");
  } else {
    Serial.println("Error updating ThingSpeak. HTTP error code " + String(status));
  }
}