#include <Wire.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoJson.h>

// Konfigurasi WiFi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Konfigurasi ThingsBoard
#define THINGSBOARD_SERVER "thingsboard.cloud"
#define TOKEN "tw6fDaIGJ99OUpIpeNIV"  // Ganti dengan token dari ThingsBoard

Adafruit_MPU6050 mpu;
WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;

// Konfigurasi Ultrasonic SR04
const int trigPin = 5;
const int echoPin = 18;

// Pin untuk sensor analog
const int soilSensorPin = 2;         // Sensor kelembaban tanah
const int raindropSensorPin = 1;     // Potensiometer sebagai pengganti sensor raindrop
const int piezometerSensorPin = 19;  // Potensiometer sebagai pengganti sensor piezometer
const int alarmPin = 2;              // Pin untuk alarm (menggunakan LED bawaan sebagai contoh)

void setup_wifi() {
  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    if (client.connect("ESP32Client", TOKEN, NULL)) {
      Serial.println("connected");
      client.publish("v1/devices/me/attributes", "{\"firmware_version\":\"1.0.0\",\"device_type\":\"ESP32_MPU6050\"}");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}

void setup() {
  Serial.begin(115200);
  
  Wire.begin(8, 9);  // SDA, SCL
  
  setup_wifi();
  
  client.setServer(THINGSBOARD_SERVER, 1883);
  client.setKeepAlive(60);

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(alarmPin, OUTPUT);  // Mengatur alarm sebagai output

  Serial.println("Finding MPU6050...");
  if (!mpu.begin(0x68, &Wire)) {
    Serial.println("Failed to find MPU6050 chip");
    while (1) {
      delay(10);
    }
  }
  Serial.println("MPU6050 Found!");

  mpu.setAccelerometerRange(MPU6050_RANGE_8_G);
  mpu.setGyroRange(MPU6050_RANGE_500_DEG);
  mpu.setFilterBandwidth(MPU6050_BAND_21_HZ);
}

float readUltrasonic() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  long duration = pulseIn(echoPin, HIGH);
  float distance = duration * 0.034 / 2;
  return distance;
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  unsigned long now = millis();
  if (now - lastMsg > 2000) {
    lastMsg = now;
    
    sensors_event_t a, g, temp;
    mpu.getEvent(&a, &g, &temp);

    float distance = readUltrasonic();
    int soilMoisture = analogRead(soilSensorPin);
    int raindropValue = analogRead(raindropSensorPin); 
    int piezometerValue = analogRead(piezometerSensorPin); 

    // Logika alarm untuk raindrop sensor
    

    if (raindropValue > 60) {
    Serial.println("Raindrop value is above 60 - Turning Alarm ON");
    digitalWrite(alarmPin, HIGH);  // Menyalakan alarm
    } else {
    Serial.println("Raindrop value is 60 or below - Turning Alarm OFF");
    digitalWrite(alarmPin, LOW);   // Mematikan alarm
    }

    String payload = "{";
    payload += "\"acceleration_x\":" + String(a.acceleration.x) + ",";
    payload += "\"acceleration_y\":" + String(a.acceleration.y) + ",";
    payload += "\"acceleration_z\":" + String(a.acceleration.z) + ",";
    payload += "\"gyro_x\":" + String(g.gyro.x) + ",";
    payload += "\"gyro_y\":" + String(g.gyro.y) + ",";
    payload += "\"gyro_z\":" + String(g.gyro.z) + ",";
    payload += "\"temperature_mpu\":" + String(temp.temperature) + ",";
    payload += "\"distance_sr04\":" + String(distance) + ",";
    payload += "\"soil_moisture\":" + String(soilMoisture) + ",";
    payload += "\"raindrop_value\":" + String(raindropValue) + ",";
    payload += "\"piezometer_value\":" + String(piezometerValue);
    payload += "}";

    Serial.print("Publishing payload: ");
    Serial.println(payload);
    
    if (client.publish("v1/devices/me/telemetry", payload.c_str())) {
      Serial.println("Publish OK");
    } else {
      Serial.println("Publish FAILED");
    }

    Serial.print("Soil Moisture: ");
    Serial.println(soilMoisture);
    Serial.print("Raindrop Value: ");
    Serial.println(raindropValue);
    Serial.print("Piezometer Value: ");
    Serial.println(piezometerValue);
    Serial.print("Ultrasonic Distance: ");
    Serial.println(distance);
    Serial.print("Alarm Status: ");
    Serial.println(digitalRead(alarmPin) == HIGH ? "ON" : "OFF");
  }
}