#include <WiFi.h>
#include <HTTPClient.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* FIREBASE_HOST = "test-10e37-default-rtdb.firebaseio.com";
const char* FIREBASE_AUTH = "uyWibhaFFHuOEaBj5rCOaBkXSiSRLRqoU2cAVpGg";
const char* databaseURL = "https://test-10e37-default-rtdb.firebaseio.com/PhongKhach.json";
const char* URLref = "https://test-10e37-default-rtdb.firebaseio.com/PhongKhach/thietbi.json";

#define DHT_PIN 5  
DHT dht(DHT_PIN, DHT22);
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);


#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978

#define SPEAKER_PIN 12
volatile int checkbutton = 0;

void IRAM_ATTR buttonInterrupt() {
    if (checkbutton == 1) {
      checkbutton = 0;
    } else {
      checkbutton = 1;
    }
}


void playSound() {
  tone(SPEAKER_PIN, NOTE_E4);
  delay(150);
  tone(SPEAKER_PIN, NOTE_G4);
  delay(150);
  tone(SPEAKER_PIN, NOTE_E5);
  delay(150);
  tone(SPEAKER_PIN, NOTE_C5);
  delay(150);
  tone(SPEAKER_PIN, NOTE_D5);
  delay(150);
  tone(SPEAKER_PIN, NOTE_G5);
  delay(150);
  noTone(SPEAKER_PIN);
}


void setup() {
  Serial.begin(115200);
  pinMode(14, OUTPUT);
  pinMode(25, INPUT_PULLUP);

  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Connecting to ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  dht.begin();
  Wire.begin(22, 21);
}

void loop() {
  delay(500); 
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  int baochay = 0;
  attachInterrupt(25, buttonInterrupt, FALLING);

  while (checkbutton == 1) {
    delay(200);
    digitalWrite(14, HIGH);
    delay(200);
    digitalWrite(14, LOW);
  }

  if (!isnan(humidity) && !isnan(temperature)) {
    Serial.printf("Humidity: %.2f%%, Temperature: %.2f°C\n", humidity, temperature);
    LCD.setCursor(0, 0);
    LCD.print ("Temp: ");
    LCD.print (temperature);
    LCD.print("C");

    LCD.setCursor(0, 1);
    LCD.print ("Humidity: ");
    LCD.print (humidity);
    LCD.print ("%");
    String data = String("{\"NhietDo\": ") + String(temperature) + String(", \"DoAm\": ") + String(humidity) + String("}");
    String data2 = String("{\"baochay\":") + String(baochay) + String("}");
    HTTPClient http;
    http.begin(databaseURL);
    http.addHeader("Content-Type", "application/json");
    http.addHeader("Authorization", FIREBASE_AUTH);

    int httpResponseCode = http.PUT(data);
    if (httpResponseCode > 0) {
      Serial.print("Data sent successfully, response code: ");
      Serial.println(httpResponseCode);
    } else {
      Serial.print("Error sending data, response code: ");
      Serial.println(httpResponseCode);
    }
    http.end();

    HTTPClient http2;
    http2.begin(URLref);
    http2.addHeader("Content-Type", "application/json");
    http2.addHeader("Authorization", FIREBASE_AUTH);
    int http2Res = http2.PUT(data2);
    if (http2Res > 0) {
      Serial.print("Data sent successfully, response code: ");
      Serial.println(http2Res);
    } else {
      Serial.print("Error sending data, response code: ");
      Serial.println(http2Res);
    }
    http2.end();

    while (temperature > 50) {
      baochay = 1;
      String data2 = String("{\"baochay\":") + String(baochay) + String("}");
      HTTPClient http2;
      http2.begin(URLref);
      http2.addHeader("Content-Type", "application/json");
      http2.addHeader("Authorization", FIREBASE_AUTH);
      int http2Res = http2.PUT(data2);
      if (http2Res > 0) {
        Serial.print("Data sent successfully, response code: ");
        Serial.println(http2Res);
      } else {
        Serial.print("Error sending data, response code: ");
        Serial.println(http2Res);
      }
      http2.end();

      playSound();
      delay(200);
      digitalWrite(14, HIGH);
      delay(200);
      digitalWrite(14, LOW);
      temperature = dht.readTemperature();
    }
  } else {
    Serial.println("Failed to read from DHT sensor");
  }
}