#include <Wire.h> // Pour utiliser un bus I2C
#include <LiquidCrystal_I2C.h> // Pour utiliser l'écran LCD I2C
#include <OneWire.h> // Pour utiliser bus composants 1-wire
#include <DallasTemperature.h> // Pour utiliser capteur T° Dallas

LiquidCrystal_I2C lcd(0x27, 20, 4); // Décalaration Ecran LCD

// Pour les capteurs de T° Onewire
const byte ONE_WIRE_BUS = 7; // Connect DS18B29 to Arduino pin 7
OneWire oneWire(ONE_WIRE_BUS); // Setup a OneWire instance to communicate with any OneWire devices.
DallasTemperature sensors(&oneWire); // Pass our OneWire reference to Dallas Temperature sensor.
byte numDevices = 0;
int8_t TEMPERATURE_PRECISION = 12;

// Pour les boutons de selection menu et gestion des menus
int upButton = 10;
int downButton = 11;
int selectButton = 12;
const int maxMenu = 6;  // Número máximo de opciones en el menú principal
const int maxSubMenu = 4;  // Número máximo de opciones en el submenú
int menu = 0;
int submenu = 0;

// Ecrans de règlage paramètres
const int maxparametres = 6;  // Nombre paramètres règlables maxi dans le sous menu paramètres
boolean menu_param = 0;
int submenu_param = 0;
String screens_param[maxparametres][2] = {{"MAX EAU CHAUDE:","Deg c"}, {"TEMPO CHAUFFE:", "Min"}, {"TEMPO MINUTEUR:","Min"}, {"Tc MAX RESISTANCE:","Deg c"}, {"Tc MIN RESERVOIR:","Deg c"}, {"Tc MAX RESERVOIR:","Deg c"}};
int parametres[maxparametres] = {60, 30, 5, 70, 5, 10 };

// Pour les sorties des relais résistances de chauffe
int chauffe_eau = 13;
int chauffe_res_propres = 9;
int chauffe_res_sales = 8;
int resistance_chauffee = 0;
int duree_tempo = 10000; // Durée temporisation de chauffe résistance

// Pour les affichages température
float temperatureaffichee = 0;

void setup() {
  Serial.begin(115200);
  sensors.begin();
  byte address[8];
  while (oneWire.search(address))
  {
    Serial.print("Bus index=");
    Serial.print(numDevices);
    Serial.print(";  Device address=");
    for(byte i = 0; i < 8; i++)
    {
      Serial.print(address[i], HEX);
      Serial.print(" ");
    }
    Serial.println();
    numDevices++;
  }

  lcd.begin(20, 4);
  lcd.setBacklight(1);
  pinMode(upButton, INPUT_PULLUP);
  pinMode(downButton, INPUT_PULLUP);
  pinMode(selectButton, INPUT_PULLUP);
  pinMode(chauffe_eau, OUTPUT);
  pinMode(chauffe_res_propres, OUTPUT);
  pinMode(chauffe_res_sales, OUTPUT);
  updateMenu();
}

void loop() {
  affichemenu();
  if (!digitalRead(upButton)) {
    if (submenu == 0) {
      menu = (menu - 1 <= 0) ? maxMenu : menu - 1;
    } else {
      submenu = (submenu - 1 <= 0) ? maxSubMenu : submenu - 1;
      if (menu_param == true) {
      submenu_param = (submenu_param - 1 <= 0) ? maxparametres : submenu_param - 1;
      }
    }
    if (menu_param == false) {
      updateMenu();
    } else {
      updateMenuparam();
    }
      delay(200);  // Debounce anti-rebond
  }

  if (!digitalRead(downButton)) {
    if (submenu == 0) {
      menu = (menu + 1 > maxMenu) ? 1 : menu + 1;
    } else {
      submenu = (submenu + 1 > maxSubMenu) ? 1 : submenu + 1;
      if (menu_param == true) {
      submenu_param = (submenu_param +1 > maxparametres) ? 1 : submenu_param + 1;
      }
    }
    if (menu_param == false) {
      updateMenu();
    } else {
      updateMenuparam();
    }
    delay(200);  // Debounce
  }

  if (!digitalRead(selectButton)) {
    excecute();
    delay(200);  // Debounce
  }
}

void updateMenu() {
  if (submenu == 0) {
    switch (menu) {
      case 0:
      ecran_temperatures();
      menu = 1;
      updateMenu();
      break;
      case 1:
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print(">CHAUFFE EAU");
        lcd.setCursor(1, 1);
        lcd.print("ANTIGEL EAU PROPRE");
        lcd.setCursor(1, 2);
        lcd.print("ANTIGEL EAU SALE");
        lcd.setCursor(1, 3);
        lcd.print("AFFICHAGE TEMPs");
        break;
      case 2:
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("CHAUFFE EAU");
        lcd.setCursor(0, 1);
        lcd.print(">ANTIGEL EAU PROPRE");
        lcd.setCursor(1, 2);
        lcd.print("ANTIGEL EAU SALE");
        lcd.setCursor(1, 3);
        lcd.print("AFFICHAGE TEMPs");
        break;
      case 3:
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("CHAUFFE EAU");
        lcd.setCursor(1, 1);
        lcd.print("ANTIGEL EAU PROPRE");
        lcd.setCursor(0, 2);
        lcd.print(">ANTIGEL EAU SALE");
        lcd.setCursor(1, 3);
        lcd.print("AFFICHAGE TEMPs");
        break;
      case 4:
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("CHAUFFE EAU");
        lcd.setCursor(1, 1);
        lcd.print("ANTIGEL EAU PROPRE");
        lcd.setCursor(1, 2);
        lcd.print("ANTIGEL EAU SALE");
        lcd.setCursor(0, 3);
        lcd.print(">AFFICHAGE TEMPs");
        break;
      case 5:
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print(">REGLAGE PARAMETRES");
        lcd.setCursor(1, 1);
        lcd.print("MINUTEUR CUISINE");
        lcd.setCursor(1, 2);
        lcd.print("NON UTILISE");
        lcd.setCursor(1, 3);
        lcd.print("NON UTILISE");
        break;
      case 6:
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("REGLAGE PARAMETRES");
        lcd.setCursor(0, 1);
        lcd.print(">MINUTEUR CUISINE");
        lcd.setCursor(1, 2);
        lcd.print("NON UTILISE");
        lcd.setCursor(1, 3);
        lcd.print("NON UTILISE");
        break;
      case 7:
        menu = 5;
        break;
    }
  } else updateSubmenu ();
}

void updateSubmenu () {
  if (submenu != 0) {
    switch (menu) {
      case 0:
        lcd.clear();
        menu = 1;
        break;
      case 1:
        lcd.clear();
        lcd.print("CHAUFFE EAU");
        lcd.setCursor(0, 1);
        lcd.print((submenu == 1) ? ">ON" : "ON");
        lcd.setCursor(4, 1);
        lcd.print((submenu == 2) ? ">OFF" : "OFF");
        lcd.setCursor(9, 1);
        lcd.print((submenu == 3) ? ">MIN." : "MIN.");
        lcd.setCursor(15, 1);
        lcd.print((submenu == 4) ? ">BACK" : "BACK");
        break;
      case 2:
        lcd.clear();
        lcd.print("CH. RES. EAU PROPRE");
        lcd.setCursor(0, 1);
        lcd.print((submenu == 1) ? ">ON" : "ON");
        lcd.setCursor(4, 1);
        lcd.print((submenu == 2) ? ">OFF" : "OFF");
        lcd.setCursor(9, 1);
        lcd.print((submenu == 3) ? ">MIN." : "MIN.");
        lcd.setCursor(15, 1);
        lcd.print((submenu == 4) ? ">BACK" : "BACK");
        break;
      case 3:
        lcd.clear();
        lcd.print("CH. RES. EAU SALE");
        lcd.setCursor(0, 1);
        lcd.print((submenu == 1) ? ">ON" : "ON");
        lcd.setCursor(4, 1);
        lcd.print((submenu == 2) ? ">OFF" : "OFF");
        lcd.setCursor(9, 1);
        lcd.print((submenu == 3) ? ">MIN." : "MIN.");
        lcd.setCursor(15, 1);
        lcd.print((submenu == 4) ? ">BACK" : "BACK");
        break;
      case 4:
        ecran_temperatures();
        submenu = 0; // Vuelve al menú principal
        updateMenu();
        break;
      case 5:
        menu_param = true;
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print(menu);
        lcd.setCursor(0,1);
        lcd.print(submenu);
        lcd.setCursor(0,2);
        lcd.print(menu_param);
        lcd.setCursor(0,3);
        lcd.print(submenu_param);
        delay(500);
        if (submenu == 4) menu_param = false;
        updateMenu();
//        lcd.clear();
//        lcd.setCursor(0,0);
//        lcd.print(screens_param[0][0]);
//        lcd.setCursor(5,0);
//        lcd.print(parametres[0]);
//        lcd.print(" ");
//        lcd.print(screens_param[0][1]);
//        lcd.clear();
//        lcd.print("REGLAGE PARAMETRES:");
//        lcd.setCursor(0,1);
//        lcd.print("MAX EAU CHAUDE:");
//        lcd.setCursor(15,1);
//        lcd.print("XX,X");
//        lcd.setCursor(0,2);
//        lcd.print("TEMPO CH. MIN.:");
//        lcd.setCursor(15,2);
//        lcd.print("XX,X");
//        lcd.setCursor(0,3);
//        lcd.print("TEMPO MINUTEUR:");
//        lcd.setCursor(15,3);
//        lcd.print("XX,X");
//        delay(3000);
//        lcd.clear();
//        lcd.print("REGLAGE PARAMETRES:");
//        lcd.setCursor(0,1);
//        lcd.print("Tc RESIST. EAU:");
//        lcd.setCursor(15,1);
//        lcd.print("XX,X");
//        lcd.setCursor(0,2);
//        lcd.print("MAX RESISTANCE:");
//        lcd.setCursor(15,2);
//        lcd.print("XX,X");
//        lcd.setCursor(0,3);
//        lcd.print("MIN RESERVOIR:");
//        lcd.setCursor(15,3);
//        lcd.print("XX,X");
//        delay(2000);
        //submenu = 0; // Vuelve al menú principal
//        updateMenu();
        break;
      case 6:
        lcd.clear();
        lcd.print("MINUTEUR CUISINE");
        lcd.setCursor(0, 1);
        lcd.print((submenu == 1) ? ">ON" : "ON");
        lcd.setCursor(4, 1);
        lcd.print((submenu == 2) ? ">OFF" : "OFF");
        lcd.setCursor(9, 1);
        lcd.print((submenu == 3) ? ">MIN." : "MIN.");
        lcd.setCursor(15, 1);
        lcd.print((submenu == 4) ? ">BACK" : "BACK");
        break;
      case 7:
        menu = 6;
        break;
  }
  }
}

void affichemenu() {
  Serial.print("menu     ");
  Serial.print(menu);
  Serial.print("    submenu  ");
  Serial.println(submenu);
  Serial.print("menu_param  ");
  Serial.println(menu_param);
  Serial.print("sub_param  ");
  Serial.println(submenu_param);
}

void excecute() {
  if (submenu == 0) {
    switch (menu) {
      case 1:
        submenu = 1; // Entramos al submenu del LED1
        updateMenu();
        break;
      case 2:
        submenu = 1; // Entramos al submenu del LED2
        updateMenu();
        break;
      case 3:
        submenu = 1; // Entramos al submenu del LED3
        updateMenu();
        break;
      case 4:
        submenu = 1; // Entramos al submenu del LED4
        updateMenu();
        break;
      case 5:
        submenu = 1; // Entramos al submenu del LED5
        //updateMenuparam();
        updateMenu();        
        break;
      case 6:
        submenu = 1; // Entramos al submenu del LED6
        updateMenu();
        break;
    }
  } else action_menu(menu);
  }

void action_menu(int menu_actuel) {
  switch (menu_actuel) {
      case 1:
        resistance_chauffee = chauffe_eau;
        break;
      case 2:
        resistance_chauffee = chauffe_res_propres;
        break;
      case 3:
        resistance_chauffee = chauffe_res_sales;
        break;
      case 4:
        resistance_chauffee = 0;
        Serial.println("Bientot les températures");
        break;
      case 5:
        resistance_chauffee = 0;
        menu_param = true;
        Serial.println("Bientot les paramètres");
        break;
      case 6:
        resistance_chauffee = 0;
        Serial.println("Bientot le minuteur");
        break;
  }
  Serial.print("Résistance active    ");
  Serial.println(resistance_chauffee);
  switch (submenu) {
      case 1:
        digitalWrite(resistance_chauffee, HIGH);
        updateMenu();
        break;
      case 2:
        digitalWrite(resistance_chauffee, LOW);
        updateMenu();
        break;
      case 3: // Opción tempo
        digitalWrite(resistance_chauffee, HIGH);
        delay(duree_tempo);
        digitalWrite(resistance_chauffee, LOW);
        submenu = 0; // Vuelve al menú principal
        updateMenu();
        break;
      case 4: // Opción de "Salir" en el submenú
        submenu = 0; // Vuelve al menú principal
        updateMenu();
        break;
    }
}

void demande_temperature (byte num_sensor) {

  if (numDevices > 0) {
    sensors.requestTemperatures();
    if ( num_sensor < numDevices ) {
      float temperatureCelsius = sensors.getTempCByIndex(num_sensor);

      // Check if the temperature reading is valid
      if (temperatureCelsius != DEVICE_DISCONNECTED_C) {
        int tInt = int(temperatureCelsius);
        temperatureaffichee = temperatureCelsius;
        // Reset the error flag
        sensors.setResolution(num_sensor, TEMPERATURE_PRECISION);
      } else {
        // Print an error message if the reading is invalid
        temperatureaffichee = 999;
        Serial.print("Error reading temperature from sensor at index ");
        Serial.println(num_sensor);      
      }
      char floatBuffer[20];
      // delay(500);
    }
  }
  // delay(1000);
}

void ecran_temperatures () {
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("Tc EAU CHAUDE:");
        lcd.setCursor(15,0);
        demande_temperature (0);
        lcd.print(temperatureaffichee);
        lcd.setCursor(0,1);
        lcd.print("Tc CC SOL:");
        lcd.setCursor(15,1);
        demande_temperature (1);
        lcd.print(temperatureaffichee);
        lcd.setCursor(0,2);
        lcd.print("Tc CC HAUT:");
        lcd.setCursor(15,2);
        demande_temperature (2);
        lcd.print(temperatureaffichee);
        lcd.setCursor(0,3);
        lcd.print("Tc EXTER.:");
        lcd.setCursor(15,3);
        demande_temperature (3);
        lcd.print(temperatureaffichee);
        delay(3000);
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("Tc RESIST. EAU:");
        lcd.setCursor(15,0);
        demande_temperature (4);
        lcd.print(temperatureaffichee);
        lcd.setCursor(0,1);
        lcd.print("Tc SOUTE:");
        lcd.setCursor(15,1);
        demande_temperature (5);
        lcd.print(temperatureaffichee);
        lcd.setCursor(0,2);
        lcd.print("Tc EAU PROPRE:");
        lcd.setCursor(15,2);
        demande_temperature (6);
        lcd.print(temperatureaffichee);
        lcd.setCursor(0,3);
        lcd.print("Tc EAU SALE:");
        lcd.setCursor(15,3);
        demande_temperature (7);
        lcd.print(temperatureaffichee);
        delay(3000);
}

void updateMenuparam() {


}