#include <ESP32Servo.h>
#include <WiFi.h>
#include "ThingSpeak.h"

// Pin Definitions
const int pir = 34;
const int buzzer = 15;
const int servoPin = 18;
const int led = 19;

// Wi-Fi credentials
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// ThingSpeak settings
unsigned long myChannelNumber = 2629809;
const char* myWriteAPIKey = "8QENKMWPJMMKH1VP";

// Initialize Servo
Servo myServo;

WiFiClient client;

// Timing variables for ThingSpeak
unsigned long lastThingSpeakUpdate = 0;
const unsigned long updateInterval = 15000; // 15 seconds

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

  // Initialize Pins
  pinMode(pir, INPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);

  // Attach the Servo
  myServo.attach(servoPin, 500, 2400);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi connected");

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

void moveServo() {
  for (int pos = 0; pos <= 180; pos += 1) {
    myServo.write(pos);
    delay(15);
  }
  for (int pos = 180; pos >= 0; pos -= 1) {
    myServo.write(pos);
    delay(15);
  }
}

void loop() {
  int motionDetected = digitalRead(pir);
  int servoPosition = myServo.read(); // Read the current position of the servo

  // Move the servo motor
  moveServo();
  
  digitalWrite(servoPin, HIGH);

  // Timing logic (example)
  int time = 10;

  if (time == 10) {
    tone(buzzer, 10000);
    digitalWrite(led, HIGH);
  } else {
    noTone(buzzer);
    digitalWrite(led, LOW);
  }

  digitalWrite(servoPin, LOW);

  // Timing for ThingSpeak updates
  unsigned long currentMillis = millis();
  if (currentMillis - lastThingSpeakUpdate >= updateInterval) {
    lastThingSpeakUpdate = currentMillis;

    // Update fields with sensor data
    ThingSpeak.setField(1, motionDetected ? 1 : 0); // 1 for Detected, 0 for Not Detected
    ThingSpeak.setField(2, digitalRead(led));       // 1 for ON, 0 for OFF
    ThingSpeak.setField(3, digitalRead(buzzer) ? 1 : 0); // 1 for ON, 0 for OFF
    ThingSpeak.setField(4, servoPosition);          // Servo Position

    // Send data to ThingSpeak
    int response = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
    if (response == 200) {
      Serial.println("Data sent to ThingSpeak successfully");
    } else {
      Serial.print("Problem sending data to ThingSpeak. HTTP error code: ");
      Serial.println(response);
    }
  }

  delay(1000);
}