#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
//#include "TinyGPS.h"
#include <time.h>


#define RXD2 16
#define TXD2 17
#define LED_PIN 23
#define BUZZER_PIN 25

// The TinyGPSPlus object
//TinyGPSPlus gps;

LiquidCrystal_I2C lcd(0x27,16, 2); // I2C address 0x27, 16 column and 2 rows

 
#define ROWS  4
#define COLS  3
 
char keyMap[ROWS][COLS] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};
 
uint8_t rowPins[ROWS] = {33, 32, 35, 34}; // R1,R2,R3,R4
uint8_t colPins[COLS] = {14, 27, 26};     //C1,C2,C3
 
Keypad keypad = Keypad(makeKeymap(keyMap), rowPins, colPins, ROWS, COLS );
 
double minLat = 3.147973;
double maxLat = 3.148027;
double minLon = 101.712973;
double maxLon = 101.713027;

bool alertTriggered = false;

 // Simulated data for gps_tx_data
  double Lat=3.148003,Lon= 101.712999;
  double Lat1=3.14999,Lon1= 101.713127;
  String InputStr = "";
  char key;
  int cc=0;
int tt=0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
 
  lcd.init(); // initialize the lcd
  lcd.backlight();
  lcd.setCursor(0, 0);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
// Clear The Display
  //lcd.clear();
}

void loop() {
  // put your main code here, to run repeatedly:
   double lans,lons;
   
   if (!alertTriggered) {
  if(cc>2)
  {
    lans=Lat1 ;
    lons=Lon1;
  }
  else
  {
    lans=Lat;
    lons=Lon;
  }
  
    lcd.setCursor(0, 0);
    lcd.print("Lat: ");
    lcd.print(lans, 6);
    Serial.println("Lat:");
    Serial.print(lans, 6);
    Serial.print(" , Lng:");
    Serial.println(lons, 6);
    lcd.setCursor(0, 1);
    lcd.print("Lng: ");
    lcd.print(lons, 6); 

    // Check if alert condition is met
    if (lans < minLat || lans > maxLat || lons < minLon || lons > maxLon) {
      if (!alertTriggered) {
        triggerAlert();
        alertTriggered = true;
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("OUT OF RANGE!");
      }
    } 
    cc++;  
delay(1000);
  }
   else if(alertTriggered)
    {
      
     key = keypad.getKey();
     if(key=='7' ||key=='*')
      Keypad keypad = Keypad(makeKeymap(keyMap), rowPins, colPins, ROWS, COLS );
  else if (key !=NO_KEY) {
    Serial.println(key);
    if(key=='#')
    {
      if(InputStr=="1234")
      {
      digitalWrite(LED_PIN, LOW);
       digitalWrite(BUZZER_PIN, LOW);
      noTone(BUZZER_PIN);
      alertTriggered = false;
      InputStr="";
      cc=0;
      }
      else
      InputStr="";
    }
    else{
      InputStr.concat(key);
    Serial.println(InputStr);}
    
  }
  
    }
  
/*
  while (Serial.available() > 0)
    if (gps.encode(Serial.read()))
      displayInfo();
      */
 // Process each character of gps_tx_data

}

void triggerAlert() {
  // Activate alert (e.g., sound buzzer, blink LED)
  digitalWrite(LED_PIN, HIGH);
  //digitalWrite(BUZZER_PIN, HIGH);
  tone(BUZZER_PIN, 1000);
/*
  delay(2000);
  digitalWrite(LED_PIN, LOW);
  noTone(BUZZER_PIN);
*/
  
}