#include <SoftwareSerial.h>
#include <AltSoftSerial.h>
#include <TinyGPS++.h>
int pir = 0;
int mode = 0;
int i;
int reset = 1;
byte bt[1]={0};
String sdt = "0703696455";
SoftwareSerial gsm(4,5);
AltSoftSerial ss;
TinyGPSPlus gps;
void gsm_setup();
void gsm_alert();
void gsm_button();
void choosemode();

void setup()
{
  Serial.begin(9600);
  gsm.begin(9600);
  ss.begin(9600);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(13, INPUT);
  pinMode(10, INPUT);
  attachInterrupt(digitalPinToInterrupt(2),choosemode,RISING);
  gsm_setup();
}

void loop()
{ 
  while (ss.available())
  gps.encode(ss.read());
  pir = digitalRead(10);
  while (Serial.available())
  {
    Serial.readBytes(bt,1);
  }
  switch (bt[0])
  {
    case 0:
    {
      break;
    }
    case 1:
    {
      reset=1;
      bt[0]=0;
      break;
    }
  }
  delay(1000);
  switch (mode)
  {
    case 0:
    {
      break; 
    }
    case 1:
    {
      if (pir == HIGH)
      { 
        if (reset == 1)
        {
          digitalWrite(11, HIGH);
          delay(1000);
          digitalWrite(11, LOW);
          delay(1000);
          gsm_alert();
          Serial.write(1);
          reset=0;
          break;
        }
        else 
        {
          break;
        }
      }
      else
      {
       break; 
      }
    }
  }
}

void gsm_setup()
{
  gsm.println("ATE0");                            
  delay(1000);
  gsm.println("AT+IPR=9600");              
  delay(1000);
  gsm.println("AT+CMGF=1");                
  delay(1000);
  gsm.println("AT+CLIP=1");                  
  delay(2000);
  gsm.println("AT+CNMI=2,2,0,0,0");              
  delay(2000);
}

void gsm_alert()
{
  gsm.println("AT+CMGS=\"" + sdt + "\"");
  delay(3000);
  if (gps.time.isValid())
  {
    int realhour = gps.time.hour() + 7;
    if (realhour > 24) realhour = realhour - 24;
    if (realhour < 10) gsm.print("0");
    gsm.print(realhour);
    gsm.print(":");
    if (gps.time.minute() < 10) gsm.print("0");
    gsm.print(gps.time.minute());
    gsm.print(":");
    if (gps.time.second() < 10) gsm.print("0");
    gsm.print(gps.time.second());
  }
  else
  {
    gsm.print("INVALID");
  }
  gsm.print("  Co ke dot nhap");
  delay(100);
  gsm.println((char)26);
  delay(100);
}

void choosemode()
{
    switch (mode)
    {
      case 0:
      { 
        reset=1;
        mode=1;
        digitalWrite(11, HIGH);
        delay(1000); 
        digitalWrite(11,LOW);
        delay(1000);
        break; 
      }
      case 1:
      {
        mode=0;
        digitalWrite(12, HIGH);
        delay(1000);
        digitalWrite(12, LOW);
        delay(1000);
        break;
      }
    }
}