/*********
  Nestor de la Paz

  based on:
  https://randomnerdtutorials.com/esp32-esp8266-i2c-lcd-arduino-ide/
  https://forum.arduino.cc/t/format-a-single-integer-into-a-string/923995

*********/

#include <LiquidCrystal_I2C.h>

// set the LCD number of columns and rows
int lcdColumns = 16;
int lcdRows = 2;

int delayTime = 400;

int homeInt = 0;
int visitInt = 0;
int inningInt = 0;

int homeUpButtonState;
int homeDownButtonState;
#define homeUpButton 2
#define homeDownButton 15

int inningUpButtonState;
int inningDownButtonState;
#define inningUpButton 18
#define inningDownButton 5

int visitUpButtonState;
int visitDownButtonState;
#define visitUpButton 23
#define visitDownButton 19


// set LCD address, number of columns and rows
// if you don't know your display address, run an I2C scanner sketch
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  

void setup(){
  // initialize LCD
  lcd.init();
  // turn on LCD backlight                      
  lcd.backlight();
  
  printHome();
  printVisit();
  printInning();

  pinMode(homeUpButton,INPUT_PULLUP);
  pinMode(homeDownButton,INPUT_PULLUP);

  pinMode(inningUpButton,INPUT_PULLUP);
  pinMode(inningDownButton,INPUT_PULLUP);

  pinMode(visitUpButton,INPUT_PULLUP);
  pinMode(visitDownButton,INPUT_PULLUP);

}

void loop(){

  homeUpButtonState=digitalRead(homeUpButton);
  if (homeUpButtonState==LOW){
    homeInt++;
    homeInt = limitNumber(homeInt);
    printHome();
    delay(delayTime);
  }

  homeDownButtonState=digitalRead(homeDownButton);
  if (homeDownButtonState==LOW){
    homeInt--;
    homeInt = limitNumber(homeInt);
    printHome();
    delay(delayTime);
  }

  inningUpButtonState=digitalRead(inningUpButton);
  if (inningUpButtonState==LOW){
    inningInt++;
    inningInt = limitNumber(inningInt);
    printInning();
    delay(delayTime);
  }

  inningDownButtonState=digitalRead(inningDownButton);
  if (inningDownButtonState==LOW){
    inningInt--;
    inningInt = limitNumber(inningInt);
    printInning();
    delay(delayTime);
  }

  visitUpButtonState=digitalRead(visitUpButton);
  if (visitUpButtonState==LOW){
    visitInt++;
    visitInt = limitNumber(visitInt);
    printVisit();
    delay(delayTime);
  }

  visitDownButtonState=digitalRead(visitDownButton);
  if (visitDownButtonState==LOW){
    visitInt--;
    visitInt = limitNumber(visitInt);
    printVisit();
    delay(delayTime);
  }

}

void printHome(){
  lcd.setCursor(2, 0);
  char homeString[3];
  sprintf(homeString, "C%02d", homeInt);
  lcd.print(homeString);
}

void printVisit(){
  lcd.setCursor(11, 0);
  char visitString[3];
  sprintf(visitString, "V%02d", visitInt);
  lcd.print(visitString);
}

void printInning(){
  lcd.setCursor(7, 1);
  char inningString[3];
  sprintf(inningString, "%02d", inningInt);
  lcd.print(inningString);
}

int limitNumber(int number){
  if (number < 0){
    number = 0;
  }
  if (number > 99){
    number = 99;
  }
  return number;
}