#define CAYENNE_PRINT Serial  
#include <CayenneMQTTMKR1000.h>
#include <SPI.h>
#include <MFRC522.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C  lcd(0x27,2,1,0,4,5,6,7); // 0x27 is the I2C bus address for an unmodified module

#define SDA_PIN 7
#define RST_PIN 6

MFRC522 rfid(SDA_PIN, RST_PIN);

// WiFi network info.
char ssid[] = "ssid";
char wifiPassword[] = "wifipassword";

// Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
char username[] = "username";
char password[] = "password";
char clientID[] = "clientID";

unsigned long lastMillis = 0;

int people1=LOW;
int people2=LOW;

int door = 5;

void setup()
{
  Serial.begin(9600);
  Cayenne.begin(username, password, clientID, ssid, wifiPassword);
  SPI.begin();
  rfid.PCD_Init();
  lcd.setBacklightPin(3,POSITIVE);
  lcd.setBacklight(HIGH); // NOTE: You can turn the backlight off by setting it to LOW instead of HIGH
  lcd.begin(16, 2);
  lcd.clear();
  pinMode(door, OUTPUT);
}

void loop()
{
  Cayenne.loop();
  //Publish data every 1 seconds (1000 milliseconds). Change this value to publish at a different interval.
  if (millis() - lastMillis > 1000) {
    lastMillis = millis();
    //Write data to Cayenne here. This example just sends the current uptime in milliseconds.
    Cayenne.virtualWrite(0, lastMillis);

  lcd.setCursor(0,0);
  lcd.print("Attach a chip");
  lcd.setCursor(0,1);
  lcd.print("or card");

  if ( ! rfid.PICC_IsNewCardPresent())
  return;
  if ( ! rfid.PICC_ReadCardSerial())
  return;
  
  People();
  
  rfid.PICC_HaltA();
  rfid.PCD_StopCrypto1();    
  }
}

void People()
{
  David();
  Ben();
}
/*-----------People-----------*/
void David()
{
  if(rfid.uid.uidByte[0] == 0x04 & rfid.uid.uidByte[1] == 0xA0 & rfid.uid.uidByte[2] == 0xB2 & rfid.uid.uidByte[3] == 0xAB && people1==LOW) {
    
    people1=HIGH;
    Cayenne.virtualWrite(5, "1", UNIT_DIGITAL);
    Serial.println("David came");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Welcome David");
    lcd.setCursor(0,1);
    lcd.print("Opening the door");
    digitalWrite(door, HIGH);
    delay(3000);
    digitalWrite(door, LOW);
    lcd.clear();
  }

  else if(rfid.uid.uidByte[0] == 0x04 & rfid.uid.uidByte[1] == 0xA0 & rfid.uid.uidByte[2] == 0xB2 & rfid.uid.uidByte[3] == 0xAB && people1==HIGH) {
    
    people1=LOW;
    Cayenne.virtualWrite(5, "0", UNIT_DIGITAL);
    Serial.println("David went out");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Goodbye David");
    lcd.setCursor(0,1);
    lcd.print("Opening the door");
    digitalWrite(door, HIGH);
    delay(3000);
    digitalWrite(door, LOW);
    lcd.clear();
  }
  else {
    
  }
}

void Ben()
{
  if(rfid.uid.uidByte[0] == 0x20 & rfid.uid.uidByte[1] == 0x71 & rfid.uid.uidByte[2] == 0x18 & rfid.uid.uidByte[3] == 0x4B && people2==LOW) {
    
    people2=HIGH;
    Cayenne.virtualWrite(6, "1", UNIT_DIGITAL);
    Serial.println("Ben came");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Welcome Ben");
    lcd.setCursor(0,1);
    lcd.print("Opening the door");
    digitalWrite(door, HIGH);
    delay(3000);
    digitalWrite(door, LOW);
    lcd.clear();
  }

  else if(rfid.uid.uidByte[0] == 0x20 & rfid.uid.uidByte[1] == 0x71 & rfid.uid.uidByte[2] == 0x18 & rfid.uid.uidByte[3] == 0x4B && people2==HIGH) {
    
    people2=LOW;
    Cayenne.virtualWrite(6, "0", UNIT_DIGITAL);
    Serial.println("Ben went out");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Goodbye Ben");
    lcd.setCursor(0,1);
    lcd.print("Opening the door");
    digitalWrite(door, HIGH);
    delay(3000);
    digitalWrite(door, LOW);
    lcd.clear();
  }
  else {
    
  }
}

//Default function for processing actuator commands from the Cayenne Dashboard.
//You can also use functions for specific channels, e.g CAYENNE_IN(1) for channel 1 commands.
CAYENNE_IN_DEFAULT()
{
  CAYENNE_LOG("CAYENNE_IN_DEFAULT(%u) - %s, %s", request.channel, getValue.getId(), getValue.asString());
  //Process message here. If there is an error set an error message using getValue.setError(), e.g getValue.setError("Error message");
}