#include <Arduino.h>
#include <WiFi.h>
#include <Firebase_ESP_Client.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <LiquidCrystal.h>

#define DHTPIN 14
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);
//Provide the token generation process info.
#include "addons/TokenHelper.h"
//Provide the RTDB payload printing info and other helper functions.
#include "addons/RTDBHelper.h"

// Insert your network credentials
#define WIFI_SSID "Kenthomes 3"
#define WIFI_PASSWORD "55555555"

#define USER_EMAIL "[email protected]"
#define USER_PASSWORD "112233"

// Insert Firebase project API Key
#define API_KEY "AIzaSyBAy1v8eWOYv3wymE_HvaeontwRsZ5uH0Q"

// Insert RTDB URLefine the RTDB URL */
#define DATABASE_URL "https://esp32-dc13c-default-rtdb.asia-southeast1.firebasedatabase.app/" 

//Define Firebase Data object
FirebaseData fbdo;

FirebaseAuth auth;
FirebaseConfig config;

unsigned long sendDataPrevMillis = 0;
int count = 0;
int intValue;
int changeState;
// bool signupOK = false;
float temp = 0;
float humi = 0;
void turnOnPin(int pinValue);
void reconnect();

// Create An LCD Object. Signals: [ RS, EN, D4, D5, D6, D7 ]
LiquidCrystal My_LCD(15, 4, 5, 18, 19, 21);


void setup(){
	dht.begin();
	Serial.begin(115200);
	// Initialize The LCD. Parameters: [ Columns, Rows ]
  	My_LCD.begin(16, 2);
  	// Clears The LCD Display
  	My_LCD.clear();

	// Display The First Message In Home Position (0, 0)
  	// My_LCD.print("DO AN 3: IoT");
  	// Set The Cursor Position To: [ Col 5, Row 1]
  	// The Next Message Will Start From The 6th Char Position in The 2nd Row
  	// Note: 1st Row Has An Index of 0, The 2nd Row Has An Index of 1
  	// My_LCD.setCursor(5, 1);
  	// Display The Second Message In Position (5, 1)

	pinMode(25, OUTPUT);
  	pinMode(26, OUTPUT);
  	pinMode(27, OUTPUT);
  	pinMode(28, OUTPUT);

	WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
	Serial.print("Connecting to Wi-Fi");
	while (WiFi.status() != WL_CONNECTED){
		Serial.print(".");
		delay(300);
	}
	Serial.println();
	Serial.println(WiFi.localIP());
	Serial.println();

	/* Assign the api key (required) */
	config.api_key = API_KEY;

	/* Assign the RTDB URL (required) */
	config.database_url = DATABASE_URL;

	auth.user.email = USER_EMAIL;
  	auth.user.password = USER_PASSWORD;
	/* Sign up */
	// if (Firebase.signUp(&config, &auth, USER_EMAIL, USER_PASSWORD)){
	// 	signupOK = true;
	// }
	// else{
	// 	Serial.printf("%s\n", config.signer.signupError.message.c_str());
	// }
	Firebase.reconnectWiFi(true);

	/* Assign the callback function for the long running token generation task */
	config.token_status_callback = tokenStatusCallback; //see addons/TokenHelper.h
	// Assign the maximum retry of token generation
  	config.max_token_generation_retry = 5;

	Firebase.begin(&config, &auth);
}

void loop(){
	if (WiFi.status() != WL_CONNECTED) {
    reconnect(); 
  	}
	// temp = dht.readTemperature();
	// humi = dht.readHumidity();

	temp = random(13,16);
	humi = random(60,80);

	My_LCD.setCursor(0, 0);
  	My_LCD.print(temp);
  	My_LCD.print("'C  ");
  	My_LCD.print(humi);
  	My_LCD.print("%");
	delay(1000);


	if (Firebase.ready() && (millis() - sendDataPrevMillis > 5500 || sendDataPrevMillis == 0)){
		sendDataPrevMillis = millis();
		// count++;
		// Firebase.RTDB.setInt(&fbdo, "/test/int", count);
		Firebase.RTDB.setFloat(&fbdo, "/DHT11/temperature", temp);
		Firebase.RTDB.setFloat(&fbdo, "/DHT11/humidity", humi);

		if (Firebase.RTDB.getInt(&fbdo, "/control/changeState")){
			if (fbdo.dataType() == "int") {
				changeState = fbdo.intData();
				Serial.println(changeState);
			}
		}

		if (Firebase.RTDB.getInt(&fbdo, "/control/buttonValue") && changeState == 1){
			if (fbdo.dataType() == "int") {
				intValue = fbdo.intData();
				turnOnPin(intValue);
				Serial.println(intValue);
				changeState = 0;
				Firebase.RTDB.setInt(&fbdo, "/control/changeState", 0);
			}
		}
	}
	My_LCD.setCursor(0, 1);
  	My_LCD.print("Power:");
  	My_LCD.print(intValue);

}

void turnOnPin(int pinValue){
	if (pinValue == 1) {
    	digitalWrite(25, HIGH);
		digitalWrite(26, LOW);
    	digitalWrite(27, LOW);
    	digitalWrite(28, LOW); 
  	} else if (pinValue == 2) {
    	digitalWrite(25, HIGH);
    	digitalWrite(26, HIGH);
		digitalWrite(27, LOW);
    	digitalWrite(28, LOW);
  	} else if (pinValue == 3) {
    	digitalWrite(25, HIGH);
    	digitalWrite(26, HIGH);    
    	digitalWrite(27, HIGH);
		digitalWrite(28, LOW);
 	} else if (pinValue == 4) {
    	digitalWrite(25, HIGH);
    	digitalWrite(26, HIGH);
    	digitalWrite(27, HIGH);
    	digitalWrite(28, HIGH);
  	}
	else if (pinValue == 0) {
    	digitalWrite(25, LOW);
    	digitalWrite(26, LOW);
    	digitalWrite(27, LOW);
    	digitalWrite(28, LOW);
  	}
}

void reconnect() {
  // Loop until reconnected  
  while (!WiFi.status() == WL_CONNECTED) {
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    delay(500);
  } 
  // Kết nối lại Firebase
  Firebase.begin(&config, &auth);  
}