/* CONNECTION INSTRUCTION
  email:[email protected] 
  pass:sumait@2025
  V0:TOTAL AMOUNT
  V1:SECURITY STATUS
  V2:notification
  V3:reset
*/


#define BLYNK_PRINT Serial
#define Serial2 sim
#define BLYNK_TEMPLATE_ID "TMPL2Ikh13ZOh"
#define BLYNK_TEMPLATE_NAME "SMART KIBUBU"
#define BLYNK_AUTH_TOKEN "3zUwtn4VS2JUxq3PFT_K2BTOsbqZE8SV"

#define buzzer     19
#define seclock    18
#define rled       4
#define bled       5
#define gled       16
#define coinpin    32


#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <LiquidCrystal_I2C.h>

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

String notification;
long totalAmount=2500,amount,ptime;
unsigned int count;
bool State;

void IRAM_ATTR intr()
{
  count++;
  ptime=millis();
}

void setup()
{
  Serial.begin(115200);
  delay(1000);
  pinMode(buzzer,OUTPUT);
  pinMode(rled,INPUT);
  pinMode(gled,OUTPUT);
  pinMode(bled,OUTPUT);
  pinMode(coinpin,INPUT_PULLUP);
  digitalWrite(buzzer,LOW);
  digitalWrite(rled,HIGH);
  Blynk.begin(auth, ssid, pass);
  digitalWrite(bled,HIGH);
  attachInterrupt(digitalPinToInterrupt(coinpin), intr, FALLING);
}

void loop()
{
 Blynk.run();
 if(get_money())
 {
   totalAmount=totalAmount+amount;
   amount =0;
   notification=String(amount)+"/- tsh. is currently received";
   Blynk.virtualWrite(V2,notification);
   Blynk.virtualWrite(V0,totalAmount);
 }
 else
 {
   notification="WAITING FOR DONATION";
   //Blynk.virtualWrite(V0,notification);
 }
 while(digitalRead(seclock))
 {
  notification="ATTENSION! DONATION BOX IS OPENNED";
  Alert(1);
  Blynk.virtualWrite(V0,notification);
 }
 Serial.println("total Ammount is:");
 Serial.print(totalAmount);
}

BLYNK_WRITE(V0)
{
  int data=param.asInt();
  if(data!= totalAmount)
  {
    totalAmount=data;
  }
}

BLYNK_WRITE(V1)
{
 int data=param.asInt();
  if(data!= State)
  {
    State=data;
  }
}

bool get_money() 
{
  if(count==2 && millis()-ptime>=150)
  {
    digitalWrite(buzzer,HIGH);
    count=0;
    ptime=millis();
    amount= 100;
    Serial.print("received amount :");
    Serial.println(amount);
    digitalWrite(buzzer,LOW);
    return HIGH;
  }
  else if(count==3 && millis()-ptime>=150)
  {
    digitalWrite(buzzer,HIGH);
    count=0;
    ptime=millis();
    amount= 200;
    Serial.print("received amount :");
    Serial.println(amount);
    digitalWrite(buzzer,LOW);
    return HIGH;
  }
  else if(count==5 && millis()-ptime>=150)
  {
    digitalWrite(buzzer,HIGH);
    count=0;
    ptime=millis();
    amount= 500;
    Serial.print("received amount :");
    Serial.println(amount);
    digitalWrite(buzzer,LOW);
    return HIGH;
  } 
  else
  {
    return LOW;
  }           
}

void Alert(uint8_t num)
{
  for(num;num>0;num--)
  {
    digitalWrite(buzzer,HIGH);
    delay(1000);
    digitalWrite(buzzer,LOW);
    delay(500);
  }
}