#define BUTTON 2
#define BUZZER 4
#include <LiquidCrystal_I2C.h>
#include <GTimer.h>
#include <EncButton.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
GTimer<millis> backlight;
GTimer<millis> screen_show;
GTimer<millis> buz;
Button b(BUTTON, INPUT, HIGH);

bool alarm = false;

byte drop[] = {
  B00100,
  B01110,
  B11111,
  B11111,
  B01110,
  B00000,
  B00000,
  B00000
};

byte bell[] = {
  B00100,
  B01110,
  B01110,
  B11111,
  B00100,
  B00000,
  B00000,
  B00000
};

byte home[] = {
  B00000,
  B00100,
  B01110,
  B11111,
  B11111,
  B11111,
  B11111,
  B00000
};

byte window[] = {
  B00000,
  B11111,
  B10101,
  B11111,
  B10101,
  B11111,
  B00000,
  B00000
};

byte watch[] = {
  B00000,
  B01110,
  B10011,
  B10101,
  B10001,
  B01110,
  B00000,
  B00000
};

byte wind[] = {
  B10000,
  B01111,
  B00000,
  B11111,
  B00000,
  B01111,
  B10000,
  B00000
};

byte precipitation[] = {
  B01000,
  B11100,
  B11100,
  B01010,
  B00111,
  B00111,
  B00010,
  B00000
};

void setup() {
  lcd.init();
  lcd.backlight();
  //lcd.noBacklight();
  lcd.createChar(1, bell);
  lcd.createChar(2, drop);
  lcd.createChar(3, home);
  lcd.createChar(4, window);
  lcd.createChar(5, watch);
  lcd.createChar(6, wind);
  lcd.createChar(7, precipitation);
  //backlight.setMode(GTMode::Timeout);
  backlight.setMode(GTMode::Overflow);
  backlight.setTime(15000);
  backlight.start();
  screen_show.setMode(GTMode::Overflow);
  screen_show.setTime(10000);
  screen_show.start();
  screen_show.force();
  buz.setMode(GTMode::Interval);
  buz.setTime(1000);
  buz.start();
  pinMode(BUZZER, OUTPUT);
}

void loop() {
  /*
  b.tick();
  alarm_check();
  if (backlight) lcd.noBacklight();
  else lcd.backlight();
  if (b.click()) {
    if (backlight) backlight.start();
    else {
      backlight.start();
      if (screen_show) screen_show.start();
      else screen_show.force();
    }
  }
  if (b.hasClicks(2)) {
    alarm = !alarm;
  }
  if (b.hasClicks(3)) {
    lcd_screen_ip();
  }
  if (screen_show) lcd_screen_one();
  else lcd_screen_two();
  if (b.hold()) reset_wifi();
  */
  lcd_screen_one();
  delay(1000);
  lcd_screen_two();
  delay(1000);
}

void alarm_check() {
  if (alarm) {
    bool i = false;
    lcd.clear();
    lcd.setCursor(5, 0);
    lcd.print("21:30");
    while(true) {
      b.tick();
      if (b.press()) {
        alarm = !alarm;
        digitalWrite(BUZZER, LOW);
        screen_show.start();
        break;
      }
      if (buz) i = !i;
      if (i) {
        lcd.backlight();
        digitalWrite(BUZZER, HIGH);
        lcd.setCursor(6, 1);
        lcd.print("0w0");
      } else {
        lcd.noBacklight();
        digitalWrite(BUZZER, LOW);
        lcd.setCursor(6, 1);
        lcd.print("-w-");
      }
      delay(0);
    }
  }
}

void lcd_screen_ip () {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("192.168.8.1");
  lcd.setCursor(0, 1);
  lcd.print("Open in browser");
  int i = 10;
  while (true) {
    delay(1000);
    i = i - 1;
    if (i == 0) break;
  }
  backlight.start();
}

void lcd_screen_one () {
  // первая строка
  lcd.setCursor(0, 0);
  if (alarm) lcd.write(1);
  else lcd.print(" ");
  lcd.print("21:30");
  //lcd.setCursor(11, 0);
  lcd.print("   ");
  lcd.write(3);
  lcd.print("1.1");
  lcd.write(223);
  lcd.print("C  ");
  // вторая строка
  lcd.setCursor(0, 1);
  lcd.print("17.07.22");
  //lcd.setCursor(11, 1);
  lcd.print("  ");
  lcd.write(2);
  lcd.print("56");
  lcd.print("%");
  lcd.print("  ");
}

void lcd_screen_two () {
  // первая строка
  lcd.setCursor(0, 0);
  lcd.write(5);
  lcd.print("11:20"); 
  //lcd.setCursor(11, 0);
  lcd.print("   ");
  lcd.write(4);
  lcd.print("-1.1");
  lcd.write(223);
  lcd.print("C");
  
  // вторая строка
  lcd.setCursor(0, 1);
  lcd.print(" ");
  lcd.print("Wed");
  //lcd.setCursor(8, 1);
  lcd.print("    ");
  lcd.write(6);
  lcd.print("10");
  lcd.print("Km/h");
  lcd.print("  ");
}

void reset_wifi () {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("  Reset Wi-Fi?  ");
  lcd.setCursor(0, 1);
  lcd.print("Tap-No  Hold-Yes");
  while(true) {
    b.tick();
    if (b.click()) break;
    if (b.hold()) {
      break;
    }
    delay(0);
  }
  backlight.start();
}