#include <Wire.h>
#include <LiquidCrystal.h>
#include <RTClib.h>
#include "DHT.h"
#include <EEPROM.h>

#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal lcd(12, 11, 10, 9, 8, 7, 6);
RTC_DS1307 rtc;

const int LED_GREEN = 4;
const int LED_RED = 5;
const int BUZZER_PIN = 3;
const int JOY_BTN_PIN = 13;
const int LDR_PIN = A0;

float temperatura, umidade;
int ldrValor;
int ldrPercent;

unsigned long lastSensorRead = 0;
unsigned long lastDisplayUpdate = 0;
unsigned long lastSecond = 0;

const unsigned long SENSOR_INTERVAL = 5000;
const unsigned long DISPLAY_INTERVAL = 1000;

float TEMP_MIN = 20.0;
float TEMP_MAX = 28.0;
float LUX_MIN = 30.0;
float LUX_MAX = 80.0;

#define EEPROM_TEMP_ADDR 0
#define EEPROM_LDR_ADDR 10

bool hourlyAlarmActive = false;
int lastAlarmHour = -1;

byte termVazia_b[8] = {B00100,B01010,B01010,B01010,B10001,B10001,B10001,B01110};
byte termMeio_b[8]  = {B00100,B01010,B01010,B01010,B11111,B11111,B11111,B01110};
byte termCheia_b[8] = {B00100,B01110,B01110,B01110,B11111,B11111,B11111,B01110};
byte lampVazia_b[8] = {B01110,B10001,B10001,B10001,B01010,B01110,B00000,B01110};
byte lampMeio_b[8]  = {B01110,B10001,B10001,B11111,B01110,B01110,B00000,B01110};
byte lampCheia_b[8] = {B01110,B11111,B11111,B11111,B01110,B01110,B00000,B01110};

void image00(); void image01(); void image02(); void image03();
void image04(); void image05(); void image06(); void image07();

void showTeachMeAnimation() {
  lcd.begin(16, 2);
  lcd.setCursor(4,0); lcd.print("Wellness");
  lcd.setCursor(4,1); lcd.print("Reminder");
  delay(2000);
  lcd.clear();
  
  image00(); delay(500);
  image01(); delay(500);
  image02(); delay(500);
  image03(); delay(800);
  image04(); delay(600);
  image05(); delay(600);
  image06(); delay(800);
  image07(); delay(1500);
  lcd.clear();
}

void setup() {
  Serial.begin(115200);
  lcd.begin(16, 2);
  pinMode(LED_GREEN, OUTPUT);
  pinMode(LED_RED, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(JOY_BTN_PIN, INPUT_PULLUP);

  dht.begin();
  if (!rtc.begin()) {
    lcd.print("Erro no RTC!");
    while (1);
  }

  showTeachMeAnimation();

  // Cria ícones
  lcd.createChar(0, termVazia_b);
  lcd.createChar(1, termMeio_b);
  lcd.createChar(2, termCheia_b);
  lcd.createChar(3, lampVazia_b);
  lcd.createChar(4, lampMeio_b);
  lcd.createChar(5, lampCheia_b);

  lcd.clear();
}

void loop() {
  DateTime now = rtc.now();

  if (millis() - lastSensorRead >= SENSOR_INTERVAL) {
    lastSensorRead = millis();

    temperatura = dht.readTemperature();
    umidade = dht.readHumidity();
    int ldrVal = analogRead(LDR_PIN);
    ldrPercent = map(ldrVal, 0, 1023, 100, 0);

    if (isnan(temperatura) || isnan(umidade)) {
      lcd.clear();
      lcd.print("Erro no DHT!");
      delay(1000);
      return;
    }

    EEPROM.put(EEPROM_TEMP_ADDR, temperatura);
    EEPROM.put(EEPROM_LDR_ADDR, ldrPercent);
  }

  if (millis() - lastDisplayUpdate >= DISPLAY_INTERVAL) {
    lastDisplayUpdate = millis();

    bool tempOk = (temperatura >= TEMP_MIN && temperatura <= TEMP_MAX);
    bool luxOk = (ldrPercent >= LUX_MIN && ldrPercent <= LUX_MAX);

    if (tempOk && luxOk) {
      digitalWrite(LED_GREEN, HIGH);
      digitalWrite(LED_RED, LOW);
      noTone(BUZZER_PIN); 
    } else {
      digitalWrite(LED_GREEN, LOW);
      digitalWrite(LED_RED, HIGH);
      tone(BUZZER_PIN, 1000); 
      delay(1000);            
      noTone(BUZZER_PIN);     
    }

    // Próxima pausa
    int currentHour = now.hour();
    int currentMin = now.minute();
    int currentSec = now.second();

    int segundosDesdeHora = currentMin * 60 + currentSec;
    int segundosRestantes = 3600 - segundosDesdeHora;
    int minutosRestantes = segundosRestantes / 60;
    int segRest = segundosRestantes % 60;

    lcd.clear();

    lcd.setCursor(0,0);
    if (temperatura < TEMP_MIN) lcd.write(byte(0));
    else if (temperatura > TEMP_MAX) lcd.write(byte(2));
    else lcd.write(byte(1));

    lcd.print(temperatura,1);
    lcd.print((char)223);
    lcd.print("C ");

    if (ldrPercent < LUX_MIN) lcd.write(byte(3));
    else if (ldrPercent > LUX_MAX) lcd.write(byte(5));
    else lcd.write(byte(4));

    lcd.print(ldrPercent);
    lcd.print("%");

    // Linha 2: Tempo até a próxima pausa
    lcd.setCursor(0,1);
    lcd.print("Prox pausa:");
    if (minutosRestantes < 10) lcd.print("0");
    lcd.print(minutosRestantes);
    lcd.print(":");
    if (segRest < 10) lcd.print("0");
    lcd.print(segRest);
  }

  if (now.minute() == 0 && now.second() == 0 && now.hour() != lastAlarmHour) {
    lastAlarmHour = now.hour();
    tone(BUZZER_PIN, 1000, 1000);
    lcd.clear();
    lcd.print("Hora da pausa!");
    lcd.setCursor(0,1);
    lcd.print("Press. joystick");
    while (digitalRead(JOY_BTN_PIN) == HIGH);
    noTone(BUZZER_PIN);
    lcd.clear();
  }
}

void image00()
{
    lcd.clear();
 
    byte image22[8] = {B00110, B01101, B11011, B10011, B00111, B01111, B01111, B11111};
    byte image23[8] = {B01111, B11110, B11100, B11000, B11000, B10000, B10000, B00000};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B00001, B00111};
    byte image08[8] = {B00000, B01000, B10000, B10000, B10000, B11111, B11111, B11000};
    byte image09[8] = {B00000, B00000, B00000, B00000, B00000, B11000, B11000, B00100};
 
    lcd.createChar(0, image22);
    lcd.createChar(1, image23);
    lcd.createChar(2, image07);
    lcd.createChar(3, image08);
    lcd.createChar(4, image09);
 
    lcd.setCursor(5, 1);
    lcd.write(byte(0));
    lcd.setCursor(6, 1);
    lcd.write(byte(1));
    lcd.setCursor(6, 0);
    lcd.write(byte(2));
    lcd.setCursor(7, 0);
    lcd.write(byte(3));
    lcd.setCursor(8, 0);
    lcd.write(byte(4));
}
 
void image01()
{
    lcd.clear();
 
    byte image22[8] = {B00110, B00101, B00011, B00011, B00111, B01111, B01111, B11111};
    byte image23[8] = {B01111, B11110, B11100, B11000, B11000, B10000, B10000, B00000};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B11001, B10111};
    byte image08[8] = {B00000, B01000, B10000, B10000, B10000, B11111, B11111, B11000};
    byte image09[8] = {B00000, B00000, B00000, B00000, B00000, B11000, B11000, B00100};
    byte image06[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B00000, B00011};
 
    lcd.createChar(0, image22);
    lcd.createChar(1, image23);
    lcd.createChar(2, image07);
    lcd.createChar(3, image08);
    lcd.createChar(4, image09);
    lcd.createChar(5, image06);
 
    lcd.setCursor(5, 1);
    lcd.write(byte(0));
    lcd.setCursor(6, 1);
    lcd.write(byte(1));
    lcd.setCursor(6, 0);
    lcd.write(byte(2));
    lcd.setCursor(7, 0);
    lcd.write(byte(3));
    lcd.setCursor(8, 0);
    lcd.write(byte(4));
    lcd.setCursor(5, 0);
    lcd.write(byte(5));
}
 
void image02()
{
    lcd.clear();
 
    byte image22[8] = {B00000, B00001, B00011, B00011, B00111, B01111, B01111, B11111};
    byte image23[8] = {B01111, B11110, B11100, B11000, B11000, B10000, B10000, B00000};
    byte image07[8] = {B00000, B00000, B00000, B00001, B00111, B00100, B11001, B10111};
    byte image08[8] = {B00000, B01000, B10000, B10000, B10000, B11111, B11111, B11000};
    byte image09[8] = {B00000, B00000, B00000, B00000, B00000, B11000, B11000, B00100};
 
    lcd.createChar(0, image22);
    lcd.createChar(1, image23);
    lcd.createChar(2, image07);
    lcd.createChar(3, image08);
    lcd.createChar(4, image09);
 
    lcd.setCursor(5, 1);
    lcd.write(byte(0));
    lcd.setCursor(6, 1);
    lcd.write(byte(1));
    lcd.setCursor(6, 0);
    lcd.write(byte(2));
    lcd.setCursor(7, 0);
    lcd.write(byte(3));
    lcd.setCursor(8, 0);
    lcd.write(byte(4));
}
 
void image03()
{
    lcd.clear();
 
    byte image22[8] = {B00000, B00001, B00011, B00011, B00111, B01111, B01111, B11111};
    byte image23[8] = {B01111, B11110, B11100, B11000, B11000, B10000, B10000, B00000};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B00001, B00111};
    byte image08[8] = {B00000, B01000, B10000, B10000, B10000, B11111, B11111, B11010};
    byte image09[8] = {B00000, B00000, B00000, B00000, B00000, B11000, B11000, B00100};
    byte image24[8] = {B00010, B00111, B00111, B00111, B00111, B00111, B00010, B00000};
 
    lcd.createChar(0, image22);
    lcd.createChar(1, image23);
    lcd.createChar(2, image07);
    lcd.createChar(3, image08);
    lcd.createChar(4, image09);
    lcd.createChar(5, image24);
 
    lcd.setCursor(5, 1);
    lcd.write(byte(0));
    lcd.setCursor(6, 1);
    lcd.write(byte(1));
    lcd.setCursor(6, 0);
    lcd.write(byte(2));
    lcd.setCursor(7, 0);
    lcd.write(byte(3));
    lcd.setCursor(8, 0);
    lcd.write(byte(4));
    lcd.setCursor(7, 1);
    lcd.write(byte(5));
}
 
void image04()
{
    lcd.clear();
 
    byte image22[8] = {B00000, B00001, B00011, B00011, B00111, B01111, B01111, B11111};
    byte image23[8] = {B01111, B11110, B11100, B11000, B11000, B10001, B10000, B00000};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B00001, B00111};
    byte image08[8] = {B00000, B01000, B10000, B10000, B10000, B11111, B11111, B11010};
    byte image09[8] = {B00000, B00000, B00000, B00000, B00000, B11000, B11000, B00100};
    byte image24[8] = {B00010, B00100, B01011, B10101, B11010, B10101, B11010, B01110};
    byte image25[8] = {B00000, B00000, B00000, B10000, B10000, B00000, B00000, B00000};
 
    lcd.createChar(0, image22);
    lcd.createChar(1, image23);
    lcd.createChar(2, image07);
    lcd.createChar(3, image08);
    lcd.createChar(4, image09);
    lcd.createChar(5, image24);
    lcd.createChar(6, image25);
 
    lcd.setCursor(5, 1);
    lcd.write(byte(0));
    lcd.setCursor(6, 1);
    lcd.write(byte(1));
    lcd.setCursor(6, 0);
    lcd.write(byte(2));
    lcd.setCursor(7, 0);
    lcd.write(byte(3));
    lcd.setCursor(8, 0);
    lcd.write(byte(4));
    lcd.setCursor(7, 1);
    lcd.write(byte(5));
    lcd.setCursor(8, 1);
    lcd.write(byte(6));
}
 
void image05()
{
    lcd.clear();
 
    byte image24[8] = {B01010, B10100, B01011, B10101, B11010, B10101, B11010, B01110};
    byte image25[8] = {B00000, B00000, B00000, B10000, B10000, B00000, B00000, B00000};
    byte image23[8] = {B01101, B01010, B01101, B00111, B00000, B00000, B00000, B00000};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B00001, B00011};
    byte image08[8] = {B00000, B00000, B00000, B00000, B00000, B00000, B00000, B10000};
 
    lcd.createChar(0, image24);
    lcd.createChar(1, image25);
    lcd.createChar(2, image23);
    lcd.createChar(3, image07);
    lcd.createChar(4, image08);
 
    lcd.setCursor(7, 1);
    lcd.write(byte(0));
    lcd.setCursor(8, 1);
    lcd.write(byte(1));
    lcd.setCursor(6, 1);
    lcd.write(byte(2));
    lcd.setCursor(6, 0);
    lcd.write(byte(3));
    lcd.setCursor(7, 0);
    lcd.write(byte(4));
}
 
void image06()
{
    lcd.clear();
 
    byte image08[8] = {B00000, B00100, B01010, B01010, B10001, B00011, B00110, B01100};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00001, B00010, B00010, B00001};
    byte image09[8] = {B00000, B00000, B10000, B11000, B00000, B00000, B11000, B00100};
    byte image24[8] = {B00100, B00100, B00011, B00000, B00000, B00000, B00000, B00000};
    byte image25[8] = {B10000, B00000, B00000, B00000, B00000, B00000, B00000, B00000};
 
    lcd.createChar(0, image08);
    lcd.createChar(1, image07);
    lcd.createChar(2, image09);
    lcd.createChar(3, image24);
    lcd.createChar(4, image25);
 
    lcd.setCursor(7, 0);
    lcd.write(byte(0));
    lcd.setCursor(6, 0);
    lcd.write(byte(1));
    lcd.setCursor(8, 0);
    lcd.write(byte(2));
    lcd.setCursor(7, 1);
    lcd.write(byte(3));
    lcd.setCursor(8, 1);
    lcd.write(byte(4));
}
 
void image07()
{
    lcd.clear();
 
    byte image24[8] = {B10101, B01110, B01110, B00100, B10101, B01110, B00100, B11111};
    byte image08[8] = {B00000, B00100, B01010, B01010, B10001, B00011, B00110, B01100};
    byte image07[8] = {B00000, B00000, B00000, B00000, B00001, B00010, B00010, B00001};
    byte image09[8] = {B00000, B00000, B10000, B11000, B00000, B00000, B00000, B00000};
 
    lcd.createChar(0, image24);
    lcd.createChar(1, image08);
    lcd.createChar(2, image07);
    lcd.createChar(3, image09);
 
    lcd.setCursor(7, 1);
    lcd.write(byte(0));
    lcd.setCursor(7, 0);
    lcd.write(byte(1));
    lcd.setCursor(6, 0);
    lcd.write(byte(2));
    lcd.setCursor(8, 0);
    lcd.write(byte(3));
}