#include <DHT.h>
#include <LiquidCrystal_I2C.h>

// Definição dos pinos
#define RED_LED 2
#define YELLOW_LED 3
#define GREEN_LED 4
#define BUZZER 5
#define DHTPIN 6
#define RAIN_SENSOR A1
#define WATER_SENSOR A0
#define DHTTYPE DHT22

// Inicialização dos sensores e display
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(RED_LED, OUTPUT);
  pinMode(YELLOW_LED, OUTPUT);
  pinMode(GREEN_LED, OUTPUT);
  pinMode(BUZZER, OUTPUT);

  Serial.begin(9600);
  dht.begin();
  lcd.init();
  lcd.backlight();
}

void loop() {
  int waterLevel = analogRead(WATER_SENSOR);
  int rain = analogRead(RAIN_SENSOR);
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  lcd.setCursor(0, 0);
  lcd.print("T:");
  lcd.print(temperature);
  lcd.print("C H:");
  lcd.print(humidity);
  lcd.print("%");

  lcd.setCursor(0, 1);
  if (waterLevel < 300) {
    lcd.print("Nivel: Baixo    ");
    digitalWrite(GREEN_LED, HIGH);
    digitalWrite(YELLOW_LED, LOW);
    digitalWrite(RED_LED, LOW);
    digitalWrite(BUZZER, LOW);
  } else if (waterLevel >= 300 && waterLevel < 700) {
    lcd.print("Nivel: Medio    ");
    digitalWrite(GREEN_LED, LOW);
    digitalWrite(YELLOW_LED, HIGH);
    digitalWrite(RED_LED, LOW);
    tone(BUZZER, 1000, 500);
  } else {
    lcd.print("Nivel: Alto!    ");
    digitalWrite(GREEN_LED, LOW);
    digitalWrite(YELLOW_LED, LOW);
    digitalWrite(RED_LED, HIGH);
    digitalWrite(BUZZER, HIGH);
  }

  delay(2000);
}