/**
   Arduino Tea maker
   by vitronics

   Copyright (C) 2023, vitronics.

*/

#include <LiquidCrystal_I2C.h>
#include <Keypad.h>


/* Display */
LiquidCrystal_I2C lcd(0X27, 20, 4);

/* Keypad setup */
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', '+'},
  {'4', '5', '6', '-'},
  {'7', '8', '9', '*'},
  {'.', '0', '=', '/'}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);


void showStartupMessage() {
  lcd.setCursor(4, 0);
  lcd.print("Welcome!");
  delay(1000);

  lcd.setCursor(0, 2);
  String message = "  Tea Maker v1.0";
  for (byte i = 0; i < message.length(); i++) {
    lcd.print(message[i]);
    delay(100);
  }
  delay(500);
}

void showWaitScreen() {
  lcd.clear();
  lcd.setCursor(1, 1);
  lcd.print("Loading menu");
  lcd.setCursor(13, 1);
  for (byte i = 0; i < 6; i++) {
    delay(1000);
    lcd.print("*");
    //delay(100);
  }
}

// Define tea flavors and their corresponding actions
const int TEA_GREEN = 1;
const int TEA_BLACK = 2;
const int TEA_HERBAL = 3;
const int TEA_CAPPUCCINO = 4;
const int TEA_MILK = 5;
const int TEA_GINGER = 6;
const int TEA_LATTE = 7;
const int TEA_CLOVE = 8;
const int HOT_WATER = 9;

int currentPage = 1; // Initial page

// Define the pins connected to components (e.g., motors, heaters, etc.)
const int GREEN_TEA_PIN = 10;
const int BLACK_TEA_PIN = 11;
const int HERBAL_TEA_PIN = 12;
const int CAPPUCCINO_TEA_PIN = 14;
const int MILK_TEA_PIN = 15;
const int GINGER_TEA_PIN = 16;
const int LATTE_TEA_PIN = 17;
const int CLOVE_TEA_PIN = 18;
const int HOT_WATER_PIN = 19;

void setup() {
  Serial.begin(115200);
  Wire.begin();
  lcd.init();
  lcd.backlight();
  showStartupMessage();
  delay(100);
  lcd.clear();
  showWaitScreen();
  delay(100);
  lcd.clear();
  
   printMenu();
  //delay(10);
  pinMode(GREEN_TEA_PIN, OUTPUT);
  pinMode(BLACK_TEA_PIN, OUTPUT);
  pinMode(HERBAL_TEA_PIN, OUTPUT);
  pinMode(HERBAL_TEA_PIN, OUTPUT);
  pinMode(CAPPUCCINO_TEA_PIN, OUTPUT);
  pinMode(MILK_TEA_PIN, OUTPUT);
  pinMode(GINGER_TEA_PIN, OUTPUT);
  pinMode(LATTE_TEA_PIN, OUTPUT);
  pinMode(CLOVE_TEA_PIN, OUTPUT);
  pinMode(HOT_WATER_PIN, OUTPUT);
 
}

void loop() {
  char key = keypad.getKey(); // Read the keypad

  if (key) {
    if (key == '+') {
      nextPage();
    }
    else if (key == '-') {
      previousPage();
    }
    else {
      int selectedTea = key - '0';
      switch (selectedTea) {
        case TEA_GREEN:
          prepareGreenTea();
          break;
        case TEA_BLACK:
          prepareBlackTea();
          break;
        case TEA_HERBAL:
          prepareHerbalTea();
          break;
        case TEA_CAPPUCCINO:
          prepareCappuccinoTea();
          break;
        case TEA_MILK:
          prepareMilkTea();
          break;
        case TEA_GINGER:
          prepareGingerTea();
          break;
        case TEA_LATTE:
          prepareLatteTea();
          break;
        case TEA_CLOVE:
          prepareCloveTea();
          break;
        case HOT_WATER:
          prepareHotWater();
          break;
        default:
          break;
      }
    }
  }
}

void nextPage() {
  currentPage++;
  if (currentPage > 2) { // Adjust the number of pages as needed
    currentPage = 1;
    printMenu();
  }
}

void previousPage() {
  currentPage--;
  if (currentPage < 1) { // Adjust for the first page
    currentPage = 2; // Adjust the number of pages as needed
    printMenu();
  }
}
void printMenu() {
  //Serial.println("----- Tea Machine Menu -----");
  if (currentPage == 1) {
    lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  } 
   if (currentPage == 2) {
   lcd.clear();
    lcd.print("---TEA MENU---");
 
  lcd.setCursor(0,1);
  lcd.print("4. Capuccino Tea");
  lcd.setCursor(0,2);
  lcd.print("5. Milk Tea");
  lcd.setCursor(0,3);
  lcd.print("6. Ginger Tea");
  }
  else if(currentPage == 3){
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("7. Latte Tea");
  lcd.setCursor(0,2);
  lcd.print("8. Clove Tea");
  lcd.setCursor(0,3);
  lcd.print("9. Hot water");
  }

  //Serial.println("---------------------------");
}


void prepareGreenTea() {
  // Actions to prepare green tea (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Green tea selected");
  digitalWrite(GREEN_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Green tea Ready");
  digitalWrite(GREEN_TEA_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Green tea selected. Preparing Green Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Green Tea Ready!");
  
}

void prepareBlackTea() {
  // Actions to prepare black tea 
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Black tea selected");
  digitalWrite(BLACK_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Black tea Ready");
  digitalWrite(BLACK_TEA_PIN, LOW);
    delay(1000);
  lcd.clear();
  lcd.print("   ---TEA MENU---");
lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  
  Serial.println("Black tea selected. Preparing Black Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Black Tea Ready!");
 
}

void prepareHerbalTea() {
  // Actions to prepare herbal tea 
    lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Herbal tea selected");
  digitalWrite(HERBAL_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Herbal tea Ready"); 
  digitalWrite(HERBAL_TEA_PIN, LOW);
    delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
 lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  
  Serial.println("Herbal tea selected. Preparing Herbal Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
 
  Serial.println("Herbal Tea Ready!");
}
void prepareCappuccinoTea() {
  // Actions to prepare Cappuccino tea (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Cappuccino tea selected");
  digitalWrite(CAPPUCCINO_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Cappuccino tea Ready");
  digitalWrite(CAPPUCCINO_TEA_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Green tea selected. Preparing Green Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Green Tea Ready!");
  
}
void prepareMilkTea() {
  // Actions to prepare Milk tea (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Milk tea selected");
  digitalWrite(MILK_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Milk tea Ready");
  digitalWrite(MILK_TEA_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Green tea selected. Preparing Green Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Green Tea Ready!");
  
}
void prepareGingerTea() {
  // Actions to prepare Ginger tea (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Ginger tea selected");
  digitalWrite(GINGER_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Ginger tea Ready");
  digitalWrite(GINGER_TEA_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Ginger tea selected. Preparing Green Tea...");
  //delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Ginger Tea Ready!");
  
}
void prepareLatteTea() {
  // Actions to prepare Latte tea (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Latte tea selected");
  digitalWrite(LATTE_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Latte tea Ready");
  digitalWrite(LATTE_TEA_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Latte tea selected. Preparing Green Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Latte Tea Ready!");
  
}
void prepareCloveTea() {
  // Actions to prepare Clove tea (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Clove tea selected");
  digitalWrite(CLOVE_TEA_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Green tea Ready");
  digitalWrite(CLOVE_TEA_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Clove tea selected. Preparing Green Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Clove Tea Ready!");
  
}
void prepareHotWater() {
  // Actions to prepare  Hot water (e.g., turn on motors, heaters, etc.)
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Hot water selected");
  digitalWrite(HOT_WATER_PIN, HIGH);
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Hot Water Ready");
  digitalWrite(HOT_WATER_PIN, LOW);
  delay(1000);
  lcd.clear();
  lcd.print("---TEA MENU---");
  lcd.setCursor(0,1);
  lcd.print("1. Green Tea");
  lcd.setCursor(0,2);
  lcd.print("2. Black Tea");
  lcd.setCursor(0,3);
  lcd.print("3. Herbal Tea");
  //lcd.clear();
  Serial.println("Hot Water selected. Preparing Green Tea...");
  delay(5000); // Simulating preparation time (5 seconds)
  
  Serial.println("Hot Water Ready!");
  
}