#include <Arduino.h>
#include <WiFi.h>
#include <FirebaseESP32.h>
#include <DHTesp.h>

#include "addons/TokenHelper.h"
#include "addons/RTDBHelper.h"

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

#define API_KEY "AIzaSyAW71ttFo_XxjWSslGRmp5M9qt2vbhCE3s"
#define DATABASE_URL "intelligent-plant-default-rtdb.europe-west1.firebasedatabase.app"

#define DATABASE_EMAIL ""
#define DATABASE_PASSWORD ""

#define DHT_PIN 23

DHTesp dhtSensor = DHTesp();

FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;

unsigned long sendDataPrevMillis = 0;
bool signupSuccess = false;
unsigned maxConnectingAttempts = 50; 

float temperatureValue = 0;

void setup() {
  Serial.begin(115200);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  Serial.print("Connecting to ");
  Serial.print(WIFI_SSID);
  Serial.print("\n");

  int connectingAttempts = 0;
  while (WiFi.status() != WL_CONNECTED) {
    if (connectingAttempts < maxConnectingAttempts) {
      Serial.print(".");
    } else {
      Serial.print("Error while Connecting! - Timeout -");
    }

    connectingAttempts++;
    delay(300);
  }

  Serial.println();
  Serial.print("Connected to WiFi with IP: ");
  Serial.print(WiFi.localIP());
  Serial.println();

  config.api_key = API_KEY;
  config.database_url = DATABASE_URL;
  
  if (Firebase.signUp(&config, &auth, DATABASE_EMAIL, DATABASE_PASSWORD)) {
    Serial.print("Sign-Up Succeed!");

    signupSuccess = true;
  } else {
    Serial.printf("%s\n", config.signer.signupError.message.c_str());
  }

  config.token_status_callback = tokenStatusCallback;
  Firebase.begin(&config, &auth);
  Firebase.reconnectWiFi(true);

  // Pinmodes
  pinMode(DHT_PIN, INPUT);
}

void loop() {
  if (Firebase.ready() && signupSuccess == true && (millis() - sendDataPrevMillis > 5000 || sendDataPrevMillis == 0)) {
    sendDataPrevMillis = millis();
    
    // Get data from DHT22
    temperatureValue = dhtSensor.getTemperature();

    if (Firebase.setFloat(fbdo, "Sensor/temperature_data", temperatureValue)) {
      Serial.println();
      Serial.print(temperatureValue);
      Serial.print(" - Successfully saved to ");
      Serial.print(fbdo.dataPath());
      Serial.print(" (");
      Serial.print(fbdo.dataType());
      Serial.print(")");
    } else {
      Serial.println("FAILED: "   + fbdo.errorReason());
    }
  } 
}