// LCD1602 and Pi Pico!

#include <BitBang_LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2, 20, 21);


int yesButton = 16;
int noButton = 22;

int yesDefaultValue = HIGH;  // Pin 16 defaults to HIGH
int noDefaultValue = HIGH;  // Pin 22 defaults to HIGH

String intro = "Hi, user";

struct Question {
  const char* question;
  const char* answerYes;
  const char* answerNo;
};

// Match totalQuestions to questions amount
int totalQuestions = 3;
// Questions need to fit in first row due to library not allowing new lines with "\n"
Question questions[] = {
  {"You like cats?", "Me too!", "Oh...ew"},
  {"Are you cool?", "Awesome!", "Oh, sorry :("},
  {"Is this neat?", "Hell yeah!","Weird take..."}
};

// Init all bools to false to begin
bool introFinished = false;
bool questionDisplayed = false;
bool yesAnswerDisplayed = false;
bool noAnswerDisplayed = false;
bool questionsEnded = false;

int qIndex = 0;

void setup() {
  boot_seq();

  if (introFinished)
  {
    intro = "";
    questionDisplayed = true;
    yesAnswerDisplayed = false;
    noAnswerDisplayed = false;
  }

  pinMode(yesButton, INPUT_PULLUP);
  pinMode(noButton, INPUT_PULLUP);
}

void loop() {
  int yesNewValue = digitalRead(yesButton);
  int noNewValue = digitalRead(noButton);

  if (questionDisplayed)
  {
    lcd.clear();
    lcd.print(questions[qIndex].question);
    questionDisplayed = false;
  }

  if (yesAnswerDisplayed)
  {
    lcd.clear();
    delay(1250);
    lcd.print(questions[qIndex].answerYes);
    yesAnswerDisplayed = false;

    delay(1500);
    qIndex += 1;
    lcd.clear();
    lcd.print("Loading next\n");
    lcd.setCursor(0, 1);
    lcd.print("Question...");
    Serial.println(qIndex);
    delay(1500);
    lcd.clear();
    questionDisplayed = true;
    return;
  }

  if (noAnswerDisplayed)
  {
    lcd.clear();
    delay(1250);
    lcd.print(questions[qIndex].answerNo);
    noAnswerDisplayed = false;

    delay(1500);
    qIndex += 1;
    lcd.clear();
    lcd.print("Loading next\n");
    lcd.setCursor(0, 1);
    lcd.print("Question...");
    Serial.println(qIndex);
    delay(1500);
    lcd.clear();
    questionDisplayed = true;
    return;
  }

  if (qIndex >= 3 && !questionsEnded)
  {
    lcd.clear();
    lcd.print("No questions");
    lcd.setCursor(0,1);
    lcd.print("left");
    questionsEnded = true;
    delay(2000);
    lcd.clear();
    end_seq();
    return;
  }

  // Yes Button
  if (yesNewValue == LOW) yesAnswerDisplayed = true;

  // No Button
  if (noNewValue == LOW) noAnswerDisplayed = true;
}

void boot_seq()
{
  turn_on();
  lcd.print("LOADING");
  delay(1000);
  lcd.print(".");
  delay(1000);
  lcd.print(".");
  delay(1000);
  lcd.print(".");
  delay(2500);
  lcd.clear();
  lcd.print(intro);
  delay(2500);
  lcd.setCursor(0, 1);
  lcd.print("Let's start...");
  delay(1250);
  lcd.clear();
  introFinished = true;
}

void end_seq()
{
  lcd.print("THANK YOU 4");
  lcd.setCursor(0,1);
  lcd.print("PLAYING!");
  delay(1500);
  lcd.clear();
  lcd.print(".");
  delay(1000);
  lcd.print(".");
  delay(1000);
  lcd.print(".");
  delay(1000);
  lcd.clear();
  lcd.print("SHUTTING");
  lcd.setCursor(0,1);
  lcd.print("DOWN!");
  delay(5000);
  lcd.clear();
  shut_off();
}

void turn_on()
{
  lcd.init();
  lcd.backlight();
}

void shut_off()
{
  lcd.noDisplay();
  lcd.noBacklight();
}