#include <HardwareSerial.h>
#include <ArduinoIoTCloud.h>
#include <Arduino_ConnectionHandler.h>

// Device and Wi-Fi Credentials
const char DEVICE_LOGIN_NAME[]  = "5f3240b0-38d8-4486-927b-a9d54739461b";
const char SSID[]               = "Wokwi-GUEST";
const char PASS[]               = "";
const char DEVICE_KEY[]         = "@zY3Hk23hodSKi@XD!HUW7oWL";

// Pin Definitions
#define SERIALOK_RX_PIN 4
#define SERIALOK_TX_PIN 2

// Debug Level
#define DEBUG_LEVEL 2

// Function Prototypes for Property Change Handlers
void onTempChange();
void onHumidChange();
void onPIRChange();
void onServoChange();

// Hardware Serial Object for Serial1
HardwareSerial Serialok(1);

// Cloud Properties
float dht22_humi;
float dht22_temp;
bool pir;
int servo, servo_val_ctrl;

// Initialize Cloud Properties
void initProperties() {
  ArduinoCloud.setBoardId(DEVICE_LOGIN_NAME);
  ArduinoCloud.setSecretDeviceKey(DEVICE_KEY);
  ArduinoCloud.addProperty(dht22_humi, READ, ON_CHANGE, onHumidChange);
  ArduinoCloud.addProperty(dht22_temp, READ, ON_CHANGE, onTempChange);
  ArduinoCloud.addProperty(pir, READ, ON_CHANGE, onPIRChange);
  ArduinoCloud.addProperty(servo, READWRITE, ON_CHANGE, onServoChange);
}

// Wi-Fi Connection Handler
WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);

void setup() {
  Serial.begin(9600); // Initialize Serial Monitor at 9600 baud
  Serialok.begin(9600, SERIAL_8N1, SERIALOK_RX_PIN, SERIALOK_TX_PIN); // Initialize Serial1 with specified pins
  delay(1500); // Wait for 1.5 seconds to stabilize the serial connection

  initProperties(); // Initialize IoT Cloud properties
  ArduinoCloud.begin(ArduinoIoTPreferredConnection); // Start IoT Cloud connection
  setDebugMessageLevel(DEBUG_LEVEL); // Set debug message level
  ArduinoCloud.printDebugInfo(); // Print debug information
}

void loop() {
  ArduinoCloud.update(); // Update the IoT Cloud state

  // Check if servo value has changed and send the new value to Serialok
  if (servo != servo_val_ctrl) {
    Serial.print("d");
    Serial.println(servo);
    Serialok.print("d");
    Serialok.println(servo);
  }
  servo_val_ctrl = servo; // Update control value

  // Read sensor data from Serialok
  if (Serialok.available()) {
    char sensor_id = Serialok.read();
    float value = Serialok.parseFloat();
    if (Serialok.read() == char(13)) { // Check for carriage return
      if (sensor_id == 'a') dht22_temp = value;
      if (sensor_id == 'b') dht22_humi = value;
      if (sensor_id == 'c') pir = bool(value);
    }
  }
}

// Handlers for property changes
void onTempChange() {
}

void onHumidChange() {
}

void onPIRChange() {
}

void onServoChange() {
}