// 
// https://forum.arduino.cc/t/one-if-statement-overwriting-another-if-statement/1269008

const int upsensPin = 4;      // UP SENSOR tells door is open
const int downsensPin = 5;    // DOWN SENSOR tells door is down

const int buttonPin = 6;      // CONTROL SWITCH

const int powerrelayPin = 9;  // green power relay energize
const int uprelayPin = 10;    // blue up relay energize
const int downrelayPin = 11;  // orange down relay energize

// not used yet.
# define ENERGIZED = HIGH;    // one stop shop for changining relay sense
# define OFF = LOW;    // one stop shop for changining relay sense

int doorDirection = 0;  // 0=stopped, 1=lower, 2=raise

enum {STOPPED, LOWER, RAISE};
char *tags[] = {"stopped", "lowering", "raising"};

int buttonState;
int previousButtonState;

void setup() {
  Serial.begin(9600); 
  
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(upsensPin, INPUT_PULLUP);  //... because switches
  pinMode(downsensPin, INPUT_PULLUP);  //... because switches

  pinMode(powerrelayPin, OUTPUT);
  pinMode(uprelayPin, OUTPUT);
  pinMode(downrelayPin, OUTPUT);

  allStop();
}

void raise() {
  doorGoUp();
  Serial.println("                please raise.");
  doorDirection = RAISE;
}

void lower() {
  doorGoDown();
  Serial.println("                please          lower.");
  doorDirection = LOWER;
}

void stop() {
  allStop();
  Serial.println("                please                      all stop.");
  doorDirection = STOPPED;
}

void doorGoUp() 
{
  Serial.println("turn on and go UP");
  digitalWrite(downrelayPin, HIGH);
  digitalWrite(uprelayPin, LOW);
  digitalWrite(powerrelayPin, LOW);
}

void doorGoDown()
{
  Serial.println("turn on and go DOWN");
  digitalWrite(uprelayPin, HIGH);
  digitalWrite(downrelayPin, LOW);
  digitalWrite(powerrelayPin, LOW);
}

void allStop()
{
  Serial.println("turn off");
  digitalWrite(powerrelayPin, HIGH);
  digitalWrite(uprelayPin, HIGH);
  digitalWrite(downrelayPin, HIGH);
}

void loop() {

  static int lastPrintedDD = 999;
  static int lastPrintedBS = 999;

  if (lastPrintedDD != doorDirection) {
    Serial.print("door Direction now : ");
    Serial.println(tags[doorDirection]);

    lastPrintedDD = doorDirection;
  }

  if (lastPrintedBS != buttonState) {
    Serial.print("button State now : \t");
    Serial.println(buttonState);

    lastPrintedBS = buttonState;
  }

  //Serial.print("Up sensor: \t");
  //Serial.println(upsens);
  //Serial.print("Down sensor: \t");
  //Serial.println(downsens);

  //-----------------------------------------------------------------------------
  // declares what buttonState is------------------------------------------------0.1
  //-----------------------------------------------------------------------------
  buttonState = digitalRead(buttonPin);
  //-----------------------------------------------------------------------------
  // if button state is different then previous button state and state is LOW---0.2
  //-----------------------------------------------------------------------------
  if (buttonState != previousButtonState) {
    if (buttonState == LOW) {
      //------------------------------------------------------------------------------
      // high limit is active and button is pushed - begin lowering------------------1
      //------------------------------------------------------------------------------
      if (digitalRead(upsensPin) == LOW) {
        lower();
        while (digitalRead(upsensPin) == LOW);  // wait until door gets off switch
      }
      //-----------------------------------------------------------------------------
      // low limit sensor is active and button is pushed - begin raising------------2
      //-----------------------------------------------------------------------------

      // should add both sensor to if statement
      if (digitalRead(downsensPin) == LOW) {
        raise();
        while (digitalRead(downsensPin) == LOW);  // wait until door gets off switch
      }
      //------------------------------------------------------------------------------
      // Door was stopped midway and button was pushed - lower-----------------------3 currently changes to raise should fully lower
      //------------------------------------------------------------------------------
      if (doorDirection == STOPPED && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        lower();
      }
      //------------------------------------------------------------------------------
      // Door was raising and button was pushed - stop-------------------------------4
      //------------------------------------------------------------------------------
else      if (doorDirection == RAISE && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        stop();
      }
      //-------------------------------------------------------------------------------
      // Door was lowering and button was pushed - raise------------------------------5 if statement cause issue with #5 if this is removed, 5 works
      //-------------------------------------------------------------------------------
else      if (doorDirection == LOWER  && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        raise();
      }
    }
  }
  //-----------------------------------------------------------------------------
  // low limit is reached while door was lowering -  door is now fully closed---6
  //-----------------------------------------------------------------------------
  if (digitalRead(downsensPin) == LOW && doorDirection == LOWER) {
    stop();
  }
  //-----------------------------------------------------------------------------
  // high limit reached while door is raising  -- door is fully open------------7
  //-----------------------------------------------------------------------------
  if (digitalRead(upsensPin) == LOW && doorDirection == RAISE) {
    stop();
  }
  //-----------------------------------------------------------------------------
  // makes previous button state what current button state is-------------------8
  //-----------------------------------------------------------------------------
  previousButtonState = buttonState;
}

/* lost code area

  if (buttonState != previousButtonState) {
    if (buttonState == LOW) {
      //------------------------------------------------------------------------------
      // high limit is active and button is pushed - begin lowering------------------1
      //------------------------------------------------------------------------------
      if (digitalRead(upsensPin) == LOW) {
        lower();
      }
      //-----------------------------------------------------------------------------
      // low limit sensor is active and button is pushed - begin raising------------2
      //-----------------------------------------------------------------------------

      // should add both sensor to if statement
      if (digitalRead(downsensPin) == LOW) {
        raise();
      }
      //------------------------------------------------------------------------------
      // Door was stopped midway and button was pushed - lower-----------------------3 currently changes to raise should fully lower
      //------------------------------------------------------------------------------
      if (doorDirection == 0 && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        lower();
      }
      //------------------------------------------------------------------------------
      // Door was raising and button was pushed - stop-------------------------------4
      //------------------------------------------------------------------------------
      if (doorDirection == 2 && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        stop();
      }
      //-------------------------------------------------------------------------------
      // Door was lowering and button was pushed - raise------------------------------5 if statement cause issue with #5 if this is removed, 5 works
      //-------------------------------------------------------------------------------
      if (doorDirection == 1  && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        raise();
      }
    }
  }

  */


/*
// thread link
// simulation link

void setupX()
{
  Serial.begin(115200);
  Serial.println("Jello Whirled!\n");
  
}

unsigned long now;

void loopX() {
  now = millis();
}


// https://forum.arduino.cc/t/one-if-statement-overwriting-another-if-statement/1269008

const int upsensPin = 4;      // UP SENSOR tells door is open
const int downsensPin = 5;    // DOWN SENSOR tells door is down

const int buttonPin = 6;      // CONTROL SWITCH

const int powerrelayPin = 9;  // green power relay energize
const int uprelayPin = 10;    // blue up relay energize
const int downrelayPin = 11;  // orange down relay energize

// not used yet.
# define ENERGIZED = HIGH;    // one stop shop for changining relay sense
# define OFF = LOW;    // one stop shop for changining relay sense

int doorDirection = 0;  // 0=stopped, 1=lower, 2=raise

enum {STOPPED, LOWER, RAISE};
char *tags[] = {"stopped", "lowering", "raising"};

int buttonState;
int previousButtonState;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(upsensPin, INPUT_PULLUP);  //... because switches
  pinMode(downsensPin, INPUT_PULLUP);  //... because switches

  pinMode(powerrelayPin, OUTPUT);
  pinMode(uprelayPin, OUTPUT);
  pinMode(downrelayPin, OUTPUT);

  digitalWrite(uprelayPin, HIGH);
  digitalWrite(powerrelayPin, HIGH);
  digitalWrite(downrelayPin, HIGH);

  Serial.begin(9600);
}

void raise() {
  digitalWrite(downrelayPin, HIGH);
  digitalWrite(uprelayPin, LOW);
  digitalWrite(powerrelayPin, LOW);
  Serial.println("                please raise.");
  doorDirection = RAISE;
}

void lower() {
  digitalWrite(uprelayPin, HIGH);
  digitalWrite(downrelayPin, LOW);
  digitalWrite(powerrelayPin, LOW);
  Serial.println("                please          lower.");
  doorDirection = LOWER;
}

void stop() {
  digitalWrite(powerrelayPin, HIGH);
  digitalWrite(uprelayPin, HIGH);
  digitalWrite(downrelayPin, HIGH);
  Serial.println("                please                      all stop.");
  doorDirection = STOPPED;
}


void loop() {

  static int lastPrintedDD = 999;
  static int lastPrintedBS = 999;

  if (lastPrintedDD != doorDirection) {
    Serial.print("door Direction now : ");
    Serial.println(tags[doorDirection]);

    lastPrintedDD = doorDirection;
  }

  if (lastPrintedBS != buttonState) {
    Serial.print("button State now : \t");
    Serial.println(buttonState);

    lastPrintedBS = buttonState;
  }

  //Serial.print("Up sensor: \t");
  //Serial.println(upsens);
  //Serial.print("Down sensor: \t");
  //Serial.println(downsens);

  //-----------------------------------------------------------------------------
  // declares what buttonState is------------------------------------------------0.1
  //-----------------------------------------------------------------------------
  buttonState = digitalRead(buttonPin);
  //-----------------------------------------------------------------------------
  // if button state is different then previous button state and state is LOW---0.2
  //-----------------------------------------------------------------------------
  if (buttonState != previousButtonState) {
    if (buttonState == LOW) {
      //------------------------------------------------------------------------------
      // high limit is active and button is pushed - begin lowering------------------1
      //------------------------------------------------------------------------------
      if (digitalRead(upsensPin) == LOW) {
        lower();
        while (digitalRead(upsensPin) == LOW);  // wait until door gets off switch
      }
      //-----------------------------------------------------------------------------
      // low limit sensor is active and button is pushed - begin raising------------2
      //-----------------------------------------------------------------------------

      // should add both sensor to if statement
      if (digitalRead(downsensPin) == LOW) {
        raise();
        while (digitalRead(downsensPin) == LOW);  // wait until door gets off switch
      }
      //------------------------------------------------------------------------------
      // Door was stopped midway and button was pushed - lower-----------------------3 currently changes to raise should fully lower
      //------------------------------------------------------------------------------
      if (doorDirection == STOPPED && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        lower();
      }
      //------------------------------------------------------------------------------
      // Door was raising and button was pushed - stop-------------------------------4
      //------------------------------------------------------------------------------
else      if (doorDirection == RAISE && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        stop();
      }
      //-------------------------------------------------------------------------------
      // Door was lowering and button was pushed - raise------------------------------5 if statement cause issue with #5 if this is removed, 5 works
      //-------------------------------------------------------------------------------
else      if (doorDirection == LOWER  && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        raise();
      }
    }
  }
  //-----------------------------------------------------------------------------
  // low limit is reached while door was lowering -  door is now fully closed---6
  //-----------------------------------------------------------------------------
  if (digitalRead(downsensPin) == LOW && doorDirection == LOWER) {
    stop();
  }
  //-----------------------------------------------------------------------------
  // high limit reached while door is raising  -- door is fully open------------7
  //-----------------------------------------------------------------------------
  if (digitalRead(upsensPin) == LOW && doorDirection == RAISE) {
    stop();
  }
  //-----------------------------------------------------------------------------
  // makes previous button state what current button state is-------------------8
  //-----------------------------------------------------------------------------
  previousButtonState = buttonState;
}
*/

//jello.

/* lost code area

  if (buttonState != previousButtonState) {
    if (buttonState == LOW) {
      //------------------------------------------------------------------------------
      // high limit is active and button is pushed - begin lowering------------------1
      //------------------------------------------------------------------------------
      if (digitalRead(upsensPin) == LOW) {
        lower();
      }
      //-----------------------------------------------------------------------------
      // low limit sensor is active and button is pushed - begin raising------------2
      //-----------------------------------------------------------------------------

      // should add both sensor to if statement
      if (digitalRead(downsensPin) == LOW) {
        raise();
      }
      //------------------------------------------------------------------------------
      // Door was stopped midway and button was pushed - lower-----------------------3 currently changes to raise should fully lower
      //------------------------------------------------------------------------------
      if (doorDirection == 0 && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        lower();
      }
      //------------------------------------------------------------------------------
      // Door was raising and button was pushed - stop-------------------------------4
      //------------------------------------------------------------------------------
      if (doorDirection == 2 && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        stop();
      }
      //-------------------------------------------------------------------------------
      // Door was lowering and button was pushed - raise------------------------------5 if statement cause issue with #5 if this is removed, 5 works
      //-------------------------------------------------------------------------------
      if (doorDirection == 1  && digitalRead(downsensPin) == HIGH && digitalRead(upsensPin) == HIGH) {
        raise();
      }
    }
  }

  */