#if defined(ESP8266)
#include <ESP8266WiFi.h>
#elif defined(ESP32)
#include <WiFi.h>
#endif
#include <esp_wifi.h>
#include "DHTesp.h"
#include "ThingsBoard.h"
#include <PubSubClient.h>

#define LDR 36
const float GAMMA = 0.7;
const float RL10 = 50;

const int DHT_PIN = 13;
DHTesp dhtSensor;

#define CURRENT_FIRMWARE_TITLE    "TEST"
#define CURRENT_FIRMWARE_VERSION  "1.0.0"

#define WIFI_SSID           "Wokwi-GUEST"
#define WIFI_PASSWORD       ""

// See https://thingsboard.io/docs/getting-started-guides/helloworld/
// to understand how to obtain an access token
#define TOKEN               "kamar1_riyadi"
// #define TOKEN               "kamar2_riyadi"
// #define TOKEN               "kamar3_riyadi"
#define THINGSBOARD_SERVER  "thingsboard.cloud"


// Baud rate for debug serial
#define SERIAL_DEBUG_BAUD   115200

// Initialize ThingsBoard client
WiFiClient espClient;
// Initialize ThingsBoard instance
ThingsBoard tb(espClient);
// the Wifi radio's status
int status = WL_IDLE_STATUS;

uint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x44};
// uint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x55};
// uint8_t newMACAddress[] = {0x32, 0xAE, 0xA4, 0x07, 0x0D, 0x66};

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

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

void setup() {
  // initialize serial for debugging
  Serial.begin(SERIAL_DEBUG_BAUD);
  Serial.println();
  InitWiFi();
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  Serial.print("[OLD] ESP32 Board MAC Address:  ");
  Serial.println(WiFi.macAddress());
  
  // ESP32 Board add-on before version < 1.0.5
  //esp_wifi_set_mac(ESP_IF_WIFI_STA, &newMACAddress[0]);
  
  // ESP32 Board add-on after version > 1.0.5
  esp_wifi_set_mac(WIFI_IF_STA, &newMACAddress[0]);
  
  Serial.print("[NEW] ESP32 Board MAC Address:  ");
  Serial.println(WiFi.macAddress());
}

void loop() {
  delay(1000);

  if (WiFi.status() != WL_CONNECTED) {
    reconnect();
  }

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

  Serial.println("Sending data...");

  // Uploads new telemetry to ThingsBoard using MQTT.
  // See https://thingsboard.io/docs/reference/mqtt-api/#telemetry-upload-api
  // for more details

  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  tb.sendTelemetryInt("temperature", data.temperature);
  tb.sendTelemetryFloat("humidity", data.humidity);
  
  int analogValue = analogRead(LDR);
  float voltage = analogValue / 4095. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  tb.sendTelemetryFloat("lux", lux);

  Serial.print(" temperature : ");
  Serial.println(data.temperature); 
  Serial.print(" humidity : ");
  Serial.println(data.humidity);
  Serial.print(" lux : ");
  Serial.println(lux);

  tb.loop();

}