# include "fcs.h"
# include "jbutton.h"

unsigned long now;

// polling period. TOF will def have a fresh report
# define RATE 1000

jButton event4;  // fake no cat TOF report
jButton event0;  // fake cat TOF report

// pins for fake event trigger buttons
# define fake0 6
# define fake4 5

// ----- symbolic indices -----
enum {
  HEARTBEAT,    // 0
  NONE_1,       // 1
  NONE_2,       // 2
  SEE0,         // 3
  ACK,          // 4
  SEE4,         // 5
  NONE_6,       // 6
  ARRIVE,       // 7
  LEAVE,        // 8
  NONE_9,       // 9
  HERE,         // 10
  GONE,         // 11

  LED_COUNT
};

void setup() {
  Serial.begin(115200);
  Serial.println("hi Mom!");

  setupFlash();

  event0.begin(fake0);
  event4.begin(fake4);
}

// fake TOF readings
bool event;
unsigned char eventType;

// note when the cat last disappeared
bool needDepartureReport;
unsigned long lastLeft;
// and if longer than this, conclude it is gone, milliseconds
# define LONGGONE 3777

bool catPresent;
int catScore;

void loop()
{
  static unsigned long lastTime;
  now = millis();
// loop rate

  serviceFlash();

  event0.update();
  event4.update();
  
  if (event0.uolPress()) {
    event = true;
    eventType = 0;
    flash(SEE0);
  }

  if (event4.uolPress()) {
    event = true;
    eventType = 4;
    flash(SEE4);
  }
 
  if (now - lastTime < RATE) return;
  lastTime = now;

// once per
  flash(HEARTBEAT, 7);


# define K1 3

// we are now looking for K1 consecutive identical reports
  if (event) {
    event = false;
  
    if (catPresent) {
      if (eventType == 4) if (++catScore == K1) catScore = K1;    // bump
      if (eventType == 0) catScore = 0;                           // reset
    }
    
    if (!catPresent) {
      if (eventType == 0) if (++catScore == K1) catScore = K1;    // bump
      if (eventType == 4) catScore = 0;                           // reset
    }
  }

  if (catScore == K1 && !catPresent) {
    catScore = 0;
    catPresent = true;
    needDepartureReport = true;
    flash(ARRIVE);
    Serial.print(now); Serial.println(" cat in sight");
    latchOn(HERE);
  }

  if (catScore == K1 && catPresent) {
    catScore = 0;
    catPresent = false;
    flash(LEAVE);
    Serial.print(now); Serial.println(" cat no in sight");
    resetLatched();
    
    lastLeft = now;
  }

// if it has been awhile with no activity, conclude the cat has left the building
  if (needDepartureReport && !catPresent)
    if (now - lastLeft > LONGGONE) {
      needDepartureReport = false;
      Serial.print(now);
      Serial.print(" cat left at "); Serial.print(lastLeft);
      Serial.println("");

      flash(GONE, 50); // long flash when Lucy jets
    }
}