#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

#include "LedControl.h"
LedControl lc = LedControl(12, 11, 10, 1);

#define UVPin A3
#define Rled 16
#define Gled 15
#define Bled 14
#define Buzzer 13
#define Speaker 5
int i, k, UVValue;
String str;
String VoiceCmd;

byte HappySmile[8] = {
  0b00111100,
  0b01000010,
  0b10011001,
  0b10000001,
  0b10100101,
  0b10011001,
  0b01000010,
  0b00111100
};

byte SadSmile[8] = {
  0b00111100,
  0b01000010,
  0b10011001,
  0b10000001,
  0b10011001,
  0b10100101,
  0b01000010,
  0b00111100
};

byte normalSmile[8] = {
  0b00111100,
  0b01000010,
  0b10011001,
  0b10000001,
  0b10000001,
  0b10111101,
  0b01000001,
  0b00111100
};

void DrawHappySmile() {
  for (i = 0; i < 8; i++)
    lc.setRow(0, i, HappySmile[i]);
}

void DrawSadSmile() {
  for (i = 0; i < 8; i++)
    lc.setRow(0, i, SadSmile[i]);
}

void DrawnormalSmile() {
  for (i = 0; i < 8; i++)
    lc.setRow(0, i, normalSmile[i]);
}

void setup() {
  Serial.begin(9600);
  pinMode(Rled, OUTPUT);
  pinMode(Gled, OUTPUT);
  pinMode(Bled, OUTPUT);
  pinMode(Buzzer, OUTPUT);
  pinMode(Speaker, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(3, 0);
  lcd.print("UV System");
  lcd.setCursor(1, 1);
  lcd.print("Ebrahem Sleman");
  lc.shutdown(0, false);  // Set brightness to a medium value
  lc.setIntensity(0, 8);  // Clear the display
  lc.clearDisplay(0);
  DrawHappySmile();
  delay(2000);
  lcd.clear();
  lcd.setCursor(3, 0);
  lcd.print("UV MONITOR");
  lcd.setCursor(0, 1);
  lcd.print("BT: start stop ");
  delay(2000);
}

void loop() {
  if (Serial.available()) {
    VoiceCmd = Serial.readString();
    while (VoiceCmd == "start" && !Serial.available()) {

      str = "UV level: ";
      UVValue = analogRead(UVPin);
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("UV value: ");
      lcd.print(UVValue);
      lcd.setCursor(4, 1);
      if (UVValue <2) {
        lcd.print("Safty");
        str = str + String(UVValue) + " Safty";
        Serial.println(str);
        DrawHappySmile();
        digitalWrite(Gled, 1);
        digitalWrite(Rled, 0);
        digitalWrite(Bled, 0);
      } else if (UVValue <5) {
        lcd.print("Be careful");
        str = str + String(UVValue) + " Be careful";
        Serial.println(str);
        DrawnormalSmile();
        digitalWrite(Gled, 0);
        digitalWrite(Rled, 0);
        digitalWrite(Bled, 1);
        for (k = 0; k < 10; k++) {
          digitalWrite(Buzzer, 1);
          delay(200);
          digitalWrite(Buzzer, 0);
          delay(200);
        }
      } else {
        lcd.print("Dangerous");
        str = str + String(UVValue) + " Dangerous";
        Serial.println(str);
        DrawSadSmile();
        for (k = 0; k < 20; k++) 
        {
          digitalWrite(Buzzer, 0);
          digitalWrite(Gled, 0);
          digitalWrite(Rled, 1);
          digitalWrite(Bled, 0);
          for (i = 1000; i > 500; i -= 10) {
            tone(Speaker, i);
            delay(5);
          }
          digitalWrite(Rled, 0);
          digitalWrite(Bled, 1);
          for (i = 500; i < 1000; i += 10) {
            tone(Speaker, i);
            delay(5);
          }
        }
        noTone(Speaker);
        digitalWrite(Bled, 0);
      }
      delay(1000);
    }
    if (VoiceCmd == "stop") {
      lcd.clear();
      lcd.setCursor(2, 0);
      lcd.print("System OFF");
      digitalWrite(Gled, 0);
      digitalWrite(Rled, 0);
      digitalWrite(Bled, 0);
      digitalWrite(Buzzer, 0);
      lc.clearDisplay(0);
    }
  }
}