#include <DHTesp.h>         // DHT for ESP32 library
#include <WiFi.h>           // WiFi control for ESP32
//#include <ThingsBoard.h>    // ThingsBoard SDK
#include "ThingsBoard.h"

#define COUNT_OF(x) ((sizeof(x)/sizeof(0[x])) / ((size_t)(!(sizeof(x) % sizeof(0[x])))))

#define WIFI_AP_NAME              "Wokwi-GUEST"
#define WIFI_PASSWORD             ""
#define THINGSBOARD_SERVER        "thingsboard.cloud"
#define THINGSBOARD_ACCESSTOKEN   "G1pb2vMiQrD4pcZPVKEW"

#define SERIAL_DEBUG_BAUD    115200

#define ECHO_PIN 4
#define TRIG_PIN 2


WiFiClient espClient;
ThingsBoard tb(espClient);
int status = WL_IDLE_STATUS;

// Array with LEDs that should be lit up one by one
uint8_t leds_cycling[] = { 21, 19, 18 };
// Array with LEDs that should be controlled from ThingsBoard, one by one
uint8_t leds_control[] = { 26, 33, 25 };
bool leds_state[] = { false, false, false };

DHTesp dht;
#define DHT_PIN 15
//#define pinBuzzer 34

// Main application loop delay
int quant = 20;
// Initial period of LED cycling.
int led_delay = 1000;
// Period of sending a temperature/humidity data.
int send_delay = 2000;

// Time passed after LED was turned ON, milliseconds.
int led_passed = 0;
// Time passed after temperature/humidity data was sent, milliseconds.
int send_passed = 0;

// Set to true if application is subscribed for the RPC messages.
bool subscribed = false;
// LED number that is currenlty ON.
int current_led = 0;

float temperature = 0;
float humidity = 0;

float airMin =250; //cm
float airMax =280; //cm
float tinggiAir;

float readTinggiCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  // return duration * 0.034 / 2;
  return 350 - (duration * 0.034 / 2);

}

RPC_Response processDelayChange(const RPC_Data &data)
{
  Serial.println("Received the set delay RPC method");

  // Process data

  led_delay = data;

  Serial.print("Set new delay: ");
  Serial.println(led_delay);

  return String(led_delay);
}

RPC_Response processGetDelay(const RPC_Data &data)
{
  Serial.println("Received the get value method");
  return String(led_delay);
}

RPC_Response processSetGpioState(const RPC_Data &data)
{
  Serial.println("Received the set GPIO RPC method");
  int pin = data["pin"];
  bool enabled = data["enabled"];
  if (pin < COUNT_OF(leds_control)) {
    Serial.print("Setting LED ");
    Serial.print(pin);
    Serial.print(" to state ");
    Serial.println(enabled);
    leds_state[pin]=enabled;  // Serial.print(" cekkkkkk ");Serial.println(leds_state[pin]);
    digitalWrite(leds_control[pin], enabled);
  }
  return String("{\"" + String(pin) + "\": " + String(enabled?"true":"false") + "}");
}

RPC_Response processGetGpioState(const RPC_Data &data)
{
  Serial.println("Received the get GPIO RPC method");
  String respStr = "{";
  
  for (size_t i = 0; i < COUNT_OF(leds_control); ++i) {
    int pin = leds_control[i];
    Serial.print("Getting LED ");
    Serial.print(pin);
    Serial.print(" state ");
    bool ledState = digitalRead(pin);
    Serial.println(ledState);

    respStr += String("\"" + String(i) + "\": " + String(ledState?"true":"false") + ", ");
  }  
  respStr = respStr.substring(0, respStr.length() - 2);
  respStr += "}";
  return respStr;
}


// RPC handlers
RPC_Callback callbacks[] = {
  { "setValue",         processDelayChange },
  { "getValue",         processGetDelay },  
  { "setGpioStatus",    processSetGpioState },
  { "getGpioStatus",    processGetGpioState },
};

void setup() {
  Serial.begin(SERIAL_DEBUG_BAUD);
  WiFi.begin(WIFI_AP_NAME, WIFI_PASSWORD);
  InitWiFi();
  // Pinconfig
  for (size_t i = 0; i < COUNT_OF(leds_cycling); ++i) {
    pinMode(leds_cycling[i], OUTPUT);
  }
  for (size_t i = 0; i < COUNT_OF(leds_control); ++i) {
    pinMode(leds_control[i], OUTPUT);
  }
  //pinMode(pinBuzzer, OUTPUT);
  // Initialize temperature sensor
  dht.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop() 
{
  delay(quant);
  led_passed += quant;
  send_passed += quant;
  //float tinggiAir = readTinggiCM();
  //Serial.print("tinggi Air : ");Serial.println(tinggiAir);
/*
  // Check if next LED should be lit up
  if (led_passed > led_delay) {
    // Turn off current LED
    digitalWrite(leds_cycling[current_led], LOW);
    led_passed = 0;
    current_led = current_led >= 2 ? 0 : (current_led + 1);
    // Turn on next LED in a row
    digitalWrite(leds_cycling[current_led], HIGH);
  }
*/
  // Reconnect to WiFi, if needed
  if (WiFi.status() != WL_CONNECTED) {
    reconnect();
    return;
  }

  // Reconnect to ThingsBoard, if needed
  if (!tb.connected()) {
    subscribed = false;

    // Connect to the ThingsBoard
    Serial.print("Connecting to: ");
    Serial.print(THINGSBOARD_SERVER);
    Serial.print(" with token ");
    Serial.println(THINGSBOARD_ACCESSTOKEN);
    if (!tb.connect(THINGSBOARD_SERVER, THINGSBOARD_ACCESSTOKEN)) {
      Serial.println("Failed to connect");
      return;
    }
  }

  // Subscribe for RPC, if needed
  if (!subscribed) {
    Serial.println("Subscribing for RPC... ");

    // Perform a subscription. All consequent data processing will happen in
    // callbacks as denoted by callbacks[] array.
    if (!tb.RPC_Subscribe(callbacks, COUNT_OF(callbacks))) {
      Serial.println("Failed to subscribe for RPC");
      return;
    }

    Serial.println("Subscribe done");
    subscribed = true;
  }  

  // Check if it is a time to send DHT22 temperature and humidity
  if (send_passed > send_delay) {
    Serial.println();
    Serial.print("Sending data... ");
    TempAndHumidity lastValues = dht.getTempAndHumidity();
    float tinggiAir = readTinggiCM();    

    if (isnan(lastValues.humidity) || isnan(lastValues.temperature)) {
      Serial.println("Failed to read from DHT sensor!");
    } else {
      temperature = lastValues.temperature;
      Serial.print("temperature: ");Serial.print(temperature);
      humidity = lastValues.humidity;
      //Serial.print(" humidity: "); Serial.print(humidity);
      Serial.print( " ktinggiair ");Serial.print(tinggiAir);
      tb.sendTelemetryFloat("temperature", temperature);
      //tb.sendTelemetryFloat("humidity", humidity);
      tb.sendTelemetryFloat("ktinggiair", tinggiAir);
      /*
      ==
      if (temperature<=27 || leds_state[1]){
        digitalWrite(33, HIGH);
      } else if (temperature>27 && temperature<=30) {
        digitalWrite(33, LOW);
        digitalWrite(25, LOW);
      }else{
        digitalWrite(25, HIGH);
      }
      ==
      */
      if (leds_state[1]==0 && leds_state[2]==0){
        //Serial.println("Mode Normal");
        if (temperature>= 31){
          if (tinggiAir>airMax) {
            digitalWrite(25, LOW); // Pompa masuk
            digitalWrite(33, HIGH); // Pompa Keluar
            //Serial.println("Suhu tinggi, over Load, Pompa Keluar");
          } else if (tinggiAir>=airMin) {
            digitalWrite(25, HIGH); // Pompa masuk
            digitalWrite(33, HIGH); // Pompa Keluar
            //Serial.println("Suhu tinggi, Normal Load, Pompa Keluar Masuk");
          } else {
            digitalWrite(25, HIGH); // Pompa Masuk
            digitalWrite(33, LOW); // Pompa Keluar
            //Serial.println("Suhu tinggi, rendah, Pompa Masuk");
          }
          
        } else if (temperature>= 27) {
          if (tinggiAir>airMax) {
            digitalWrite(25, LOW); // Pompa masuk
            digitalWrite(33, HIGH); // Pompa Keluar
            //Serial.println("Suhu Normal, over Load, Pompa Keluar");
          } else if (tinggiAir>=airMin) {
            digitalWrite(25, LOW); // Pompa masuk
            digitalWrite(33, LOW); // Pompa Keluar
            //Serial.println("Suhu Normal, normal Load");
          } else {
            digitalWrite(25, HIGH); // Pompa Masuk
            digitalWrite(33, LOW); // Pompa Keluar
            //Serial.println("Suhu Normal, rendah, Pompa Masuk");
          }
        } else {
          if (tinggiAir>airMax) {
            digitalWrite(25, LOW); // Pompa masuk
            digitalWrite(33, HIGH); // Pompa Keluar
            //Serial.println("Suhu Rendah, over Load, Pompa Keluar");
          } else if (tinggiAir>=airMin) {
            digitalWrite(25, LOW); // Pompa masuk
            digitalWrite(33, LOW); // Pompa Keluar
            //Serial.println("Suhu Rendah, Normal Load");
          } else {
            digitalWrite(25, HIGH); // Pompa Masuk
            digitalWrite(33, LOW); // Pompa Keluar
            //Serial.println("Suhu Rendah, Rendah, Masuk");
          }
        }
      } else if (leds_state[1]==1 && leds_state[2]==0) {  // Mode Membersihkan Kolam
        //Serial.println("Mode Bersihkan Kolam");
        if (tinggiAir>airMax) {
          digitalWrite(25, LOW); // Pompa masuk
          digitalWrite(33, HIGH); // Pompa Keluar
          } else if (readTinggiCM()>=airMin) {
            digitalWrite(25, HIGH); // Pompa masuk
            digitalWrite(33, HIGH); // Pompa Keluar
          } else {
            digitalWrite(25, HIGH); // Pompa Masuk
            digitalWrite(33, LOW); // Pompa Keluar
          }
      } else if (leds_state[1]==0 && leds_state[2]==1) {  // Mode Menguras Kolam
        //Serial.println("Mode Menguras");
        if (tinggiAir>50) {
          digitalWrite(25, LOW); // Pompa masuk
          digitalWrite(33, HIGH); // Pompa Keluar
          } else {
            digitalWrite(25, HIGH); // Pompa Masuk
            digitalWrite(33, LOW); // Pompa Keluar
          }
      } else {
        Serial.println(". . . Error . . .");
      }


    }
    send_passed = 0;
  }


  tb.loop();
}

void InitWiFi()
{
  Serial.println("Connecting to AP ...");
  // attempt to connect to WiFi network

  WiFi.begin(WIFI_AP_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to AP");
}

void reconnect() {
  // Loop until we're reconnected
  status = WiFi.status();
  if ( status != WL_CONNECTED) {
    WiFi.begin(WIFI_AP_NAME, WIFI_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
    Serial.println("Connected to AP");
  }
}