/*Horloge multifonctions : Concevoir
 une horloge multifonction pour afficher 
 l’heure et la température ambiante, régler un réveil, 
 et fournir un mode minuteur ou chronomètre.*/


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

int temperature_pin = 32;
int reglage_pin = 33;
int button_pin = 25;
int buzzer_pin = 26;

int temperature=0;
int analogValue;
int extemp;
int timezone=0;
int extime;
int mode;
int choix=3;
int reglage_heure;
int reglage_minute;
int minute;
int heure;
int sortie = 0;
int clearmaint;

LiquidCrystal_I2C lcd(0x27, 16, 2);

const char *ssid     = "Wokwi-GUEST";
const char *password = "";

String welcome[] = {"w", "e", "l", "c", "o", "m", "e"};

void setup() {
  pinMode(temperature_pin, OUTPUT);
  pinMode(reglage_pin, INPUT);
  pinMode(button_pin, INPUT_PULLUP);
  pinMode(buzzer_pin, OUTPUT);

  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  WiFi.begin(ssid, password);

  byte emoji[] = {0x0, 0xa, 0x0, 0x4, 0x4, 0x11, 0xe, 0x0};
  byte fleche_droite[] = {0x8, 0xc, 0xe, 0xf, 0xf, 0xe, 0xc, 0x8};
  byte fleche_gauche[] = {0x2, 0x6, 0xe, 0x1e, 0x1e, 0xe, 0x6, 0x2};
  byte horloge[] = {0x0, 0x8, 0x8, 0x9, 0xa, 0xc, 0x0, 0x0};


  lcd.createChar(0, emoji);
  lcd.createChar(1, fleche_droite);
  lcd.createChar(2, fleche_gauche);
  lcd.createChar(3, horloge);
  
  while (WiFi.status() != WL_CONNECTED)
  {
    lcd.setCursor(1, 0);
    lcd.print("connecting....");
  }
  lcd.clear();
  
  for (int i = 0; i <= 6; i++)
  {
    lcd.setCursor(i + 4, 0);
    lcd.print(welcome[i]);
    delay(200);
  }
  lcd.setCursor(11, 0);
  lcd.write(0);
  delay(1000);

  lcd.clear();


  while(digitalRead(button_pin)){
    extime = timezone;
    timezone = map(analogRead(reglage_pin), 0, 4095, -12, 12);
    if((extime>=10 && timezone<10) || (extime <= -10 && timezone>-10) || (extime < 0 && timezone >= 0)){
      for(int i=9; i<=11; i++){
        lcd.setCursor(i,1);
        lcd.print(" ");
      }
    }
    lcd.setCursor(1, 0);
    lcd.print("Your  timezone");
    lcd.setCursor(4, 1);
    lcd.print("GMT+ ");
    lcd.print(timezone);
  }
  configTime(timezone * 3600, 0, "fr.pool.ntp.org");

  lcd.clear();
  
  delay(1000);
}

void loop() {

  

  int maintien=0;
  if(!digitalRead(button_pin)){
    lcd.clear();
    lcd.setCursor(2, 0);
    lcd.print("Vous  voulez");
    while(!maintien){
      choix = map(analogRead(reglage_pin), 0, 4095, 0, 3);
      if(choix == 0){
        for(int i=0; i<=3; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        for(int i=12; i<=15; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        lcd.setCursor(4, 1);
        lcd.write(1);
        lcd.setCursor(5, 1);
        lcd.print("CHRONO");
        lcd.setCursor(11, 1);
        lcd.write(2);
      }
      else if(choix == 1){
        for(int i=0; i<=2; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        for(int i=13; i<=15; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        lcd.setCursor(3, 1);
        lcd.write(1);
        lcd.setCursor(4, 1);
        lcd.print("MINUTEUR");
        lcd.setCursor(12, 1);
        lcd.write(2);
      }



      else if(choix == 2){
        sortie=1;
        clearmaint=1;
        for(int i=0; i<=3; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        for(int i=12; i<=15; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        lcd.setCursor(4, 1);
        lcd.write(1);
        lcd.setCursor(5, 1);
        lcd.print("REVEIL");
        lcd.setCursor(11, 1);
        lcd.write(2);
      }
      else if(choix == 3){
        for(int i=0; i<=2; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        for(int i=13; i<=15; i++){
          lcd.setCursor(i, 1);
          lcd.print(" ");  
        }
        lcd.setCursor(3, 1);
        lcd.write(1);
        lcd.setCursor(4, 1);
        lcd.print("ACCUEIL!");
        lcd.setCursor(12, 1);
        lcd.write(2);
      }
      if(!digitalRead(button_pin)){
        lcd.clear();
        maintien = 1;
      }
      
    }
    delay(500);
    
  }

  if(choix == 3 || choix == 2){
    if(choix == 2){
      if(clearmaint){
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("Reglage reveil");
      }
      clearmaint=0;
      while(digitalRead(button_pin) && sortie){
        int Exreglage_heure = reglage_heure;
        reglage_heure = map(analogRead(reglage_pin), 0, 4095, 0, 23);
        if((Exreglage_heure>=10 && reglage_heure<10) || (Exreglage_heure<10 && reglage_heure>=10)){
          for(int i=0; i<=5; i++){
            lcd.setCursor(i, 1);
            lcd.print(" ");
          }
        }
        lcd.setCursor(4, 1);
        lcd.print(reglage_heure);
        lcd.setCursor(6, 1);
        lcd.print(":");
        lcd.setCursor(7, 1);
        lcd.print(reglage_minute);
      }
      delay(500);

      while(digitalRead(button_pin) && sortie){
        int Exreglage_minute = reglage_minute;
        reglage_minute = map(analogRead(reglage_pin), 0, 4095, 0, 59);
        if((Exreglage_minute>=10 && reglage_minute<10) || (Exreglage_minute<10 && reglage_minute>=10)){
          for(int i=7; i<=15; i++){
            lcd.setCursor(i, 1);
            lcd.print(" ");
          }
        }
        lcd.setCursor(4, 1);
        lcd.print(reglage_heure);
        lcd.setCursor(6, 1);
        lcd.print(":");
        lcd.setCursor(7, 1);
        lcd.print(reglage_minute);
        if(!digitalRead(button_pin)){
          sortie = 0;
          lcd.clear();
          delay(500);
          lcd.setCursor(7, 0);
          lcd.write(3);
        }
      }
    }

    struct tm timeinfo;
    time_t now = time(NULL);
    struct tm *datetime = gmtime(&now);

    while (!getLocalTime(&timeinfo)) {
      lcd.setCursor(3, 0);
      lcd.println("Time error");
      delay(200);
      lcd.clear();
    }
    lcd.setCursor(1, 1);
    lcd.print(&timeinfo, "%a %d/%m/%Y");

    lcd.setCursor(9, 0);
    lcd.print(&timeinfo, "%H:%M");

    heure = datetime -> tm_hour + timezone;
    if(heure >= 24){
      heure = heure-24;
    }
    minute = datetime -> tm_min;
    if(minute >= 60){
      minute = minute-60;
    }

    analogValue = analogRead(temperature_pin);
    extemp = temperature;
    temperature = 1 / (log(1 / (4095. / analogValue - 1)) / 3950 + 1.0 / 298.15) - 273.15;
    if((extemp >= 10 && temperature < 10) || (extemp < 0 && temperature >= 0) || (extemp <= -10 && temperature > -10)){
      for(int i=2; i<=6; i++){
        lcd.setCursor(i,0);
        lcd.print(" ");
      }
    }

    lcd.setCursor(2, 0);
    lcd.print(temperature);
    lcd.print((char)223);
    lcd.print("C");

    if(reglage_heure == heure && reglage_minute == minute && choix == 2){
      while(digitalRead(button_pin)){
        digitalWrite(buzzer_pin,HIGH);
        delay(50);
        digitalWrite(buzzer_pin,LOW);
        delay(50);
        if(!digitalRead(button_pin)){
            
          digitalWrite(buzzer_pin,LOW);
          choix = 3;
          lcd.clear();
          delay(500);
          break;
        }
      }
    }

  }

}