#include <WiFi.h>
#include <WiFiClient.h>
#include <FirebaseESP32.h>
#include "DHTesp.h"

#define API_KEY "AIzaSyDOCGeNGWMA3xXhNWewRK_8QlY68mDhHdk"
#define USER_EMAIL "[email protected]"
#define USER_PASSWORD "qwer1234"
#define DATABASE_URL "https://m-iot.firebaseio.com/"
#define DATABASE_SECRET "d270PdYLZ3erwiaWwQ7zqhJhHgObak5DgilG5i9K"
#define LED 2

const int DHT_PIN = 15;
DHTesp dhtSensor;
const float GAMMA = 0.7;
const float RL10 = 50;

unsigned long dataMillis = 0;
String deviceId = "N02";

FirebaseData fbdo1;
FirebaseData fbdo2;
FirebaseAuth auth;
FirebaseConfig config;

void setup()
{
  Serial.begin(9600);

  /* WIFI */

  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");


  /* FIREBASE */

  config.api_key = API_KEY;
  
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;

  config.database_url = DATABASE_URL;

  Firebase.reconnectWiFi(true);
  fbdo2.setResponseSize(4096);

  String base_path = "/users/";

  // config.token_status_callback = TokenStatusCallback;
  
  Firebase.begin(&config, &auth);

  String var = "$uid";
  String val = "($uid === auth.uid)";
  Firebase.setReadWriteRules(fbdo2, base_path, var, val, val, DATABASE_SECRET);

  pinMode(LED, OUTPUT);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
}

void loop()
{
  runFirebase();
}

void runFirebase()
{
  if(Firebase.ready())
  {
    // Serial.println(Firebase.ready());
    String path = "/users/";
    path += auth.token.uid.c_str();
    path += "/devices/" + deviceId;
  
    String pathRT = path+"/realtime/";
    Firebase.setTimestamp(fbdo2, pathRT+"/timestamp");
    Firebase.getDouble(fbdo2, pathRT+"/timestamp");
    uint64_t timest = fbdo2.to<uint64_t>();
    
    FirebaseJson json1;

    TempAndHumidity  data = dhtSensor.getTempAndHumidity();

    int analogValue = analogRead(36);
    float voltage = analogValue * 5/4095.0;
    float resistance = 2000 * voltage / (1 - voltage / 5);
    float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  
    json1.add("temp", data.temperature );
    json1.add("rh", data.humidity );
    json1.add("lux", lux);
    json1.add("timestamp", timest);

    Firebase.setJSON(fbdo1, pathRT, json1);

   
    if (millis() - dataMillis > 3600000)
    {
      dataMillis = millis();
      String pathLog = "/logs/"+ deviceId;
  
      FirebaseJson json2;
  
      json2.add("temp", data.temperature );
      json2.add("rh", data.humidity );
      json2.add("lux", lux);
      json2.add("timestamp", timest);

      Firebase.pushJSON(fbdo2, pathLog, json2);
    }

    
    delay(5000);
  }
}