#include <Arduino.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <math.h>
// #include <AltSoftSerial.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
// Pins
#define BT1 2
#define BT2 3
#define BT3 4
#define BTS7960_PWM 5
#define SUMOTOR 6
#define ISIALARM 7
#define ALTSOFTWARE_RX 8
#define ALTSOFTWARE_TX 9
#define BUZZER 10
#define FANALARM 11
#define SUALARM 12
#define NEMALARM 13
#define SUSICAKLIK A0
#define KAPILIMIT A1
#define BTS7960_IO_1 A2
#define BTS7960_IO_2 A3

// 0x3C genellikle SSD1306 OLED'ler için kullanılan I2C adresidir.
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
volatile bool button1Pressed = false;
volatile bool button2Pressed = false;
bool button3Pressed = false;
bool button3Pressed3sec = false;
bool mypikon_mode = false;
unsigned long BT3_pressTime_previous = 0;
unsigned long read_ntc_previous = 0;
const unsigned int interval1 = 1500; // 1000ms = 1 saniye
bool menu_bool = false;
bool pikon_bool = false;
bool anasayfa_bool = true;
byte menu_pages = 1;
byte menu_pages_last = 0;
bool pikon_run_bool = false;
bool SUISI_TEMP_bool = false;
unsigned long currentMillis;
int SUISI_TEMP;
byte SUISI_TEMP_Alarm;

// AltSoftSerial altSerial(8,9); // RX, TX

// ISR'ler (Interrupt Service Routine)
void handleButton1()
{
  // Debounce interrupt trigger
  static unsigned long last_interrupt_time = 0;
  unsigned long interrupt_time = millis();
  unsigned int temp = 0;
  // If interrupts come faster than 35ms, assume it's a bounce and ignore
  if (interrupt_time - last_interrupt_time > 35)
  {
    temp++;
    if ((temp % 2) == 0)
    {
      button1Pressed = false;
    }
    else
    {
      button1Pressed = true;
    }
  }
  last_interrupt_time = interrupt_time;
}
void handleButton2()
{
  // Debounce interrupt trigger
  static unsigned long last_interrupt_time = 0;
  unsigned long interrupt_time = millis();
  unsigned int temp = 0;
  // If interrupts come faster than 35ms, assume it's a bounce and ignore
  if (interrupt_time - last_interrupt_time > 35)
  {
    temp++;
    if ((temp % 2) == 0)
    {
      button2Pressed = false;
    }
    else
    {
      button2Pressed = true;
    }
  }
  last_interrupt_time = interrupt_time;
}
void Read_NTC10k()
{
  if ((currentMillis - read_ntc_previous) >= 100)
  {
    read_ntc_previous = currentMillis;
    float a = 639.5, b = -0.1332, c = -162.5;
    float Rntc, Vntc;
    Vntc = (analogRead(SUSICAKLIK) * 5.0) / 1023.0;
    Rntc = 10000.0 * ((5.0 / Vntc) - 1);
    SUISI_TEMP = a * pow(Rntc, b) + c;
  }
}
byte degisim_oku(byte max, byte min, byte data)
{
  if (button1Pressed && (data < max))
  {
    button1Pressed = false;
    data = data + 1;
    delay(250);
  }
  else if (button1Pressed && (data >= max))
  {
    button1Pressed = false;
    data = min;
    delay(250);
  }
  else if (button2Pressed && (data > min))
  {
    button2Pressed = false;
    data = data - 1;
    delay(250);
  }
  else if (button2Pressed && (data <= min))
  {
    button2Pressed = false;
    data = max;
    delay(250);
  }
  return data;
}
void SUISI()
{
  if (SUISI_TEMP_bool)
  {
    display.clearDisplay();
    display.setCursor(0, 0);
    display.print("SUISI_ALARM == ");
    display.print(SUISI_TEMP_Alarm);
    Serial.println(SUISI_TEMP_Alarm);
    delay(1000);
    SUISI_TEMP_Alarm = degisim_oku(40, 0, SUISI_TEMP_Alarm);
    if (button3Pressed3sec)
    {
      // save the data to eeprom
      button3Pressed3sec = false;
      SUISI_TEMP_bool = false;
      anasayfa_bool = true;
    }
  }
}
void anasayfa()
{
  if (anasayfa_bool)
  {
    display.clearDisplay();
    display.setTextColor(SSD1306_WHITE); // Beyaz yazı
    display.setCursor(0, 0);             // Ekranın sol üst köşesi
    display.print("ISI:");
    display.print(menu_pages);
    display.println("C"); // ISI DEĞERİ
    display.print("NEM:");
    display.print(menu_pages);
    display.println("%"); // ISI DEĞERİ
    display.print("SUISI:");
    display.print(SUISI_TEMP);
    display.println("C"); // ISI DEĞERİ
    display.display();    // Ekrana yazdır
  }
}
void menu_alt1()
{
  if (menu_pages != menu_pages_last)
  {
    if (menu_pages == 1)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON    (-X-)");
      display.println("(2)SUISI         ");
      display.println("(3)SUHIZ         ");
      display.println("(4)ZAMAN         ");
      display.println("(5)NEMAL         ");
      display.println("(6)ISIAL         ");
      display.println("(7)BAKIM         ");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
    else if (menu_pages == 2)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON         ");
      display.println("(2)SUISI    (-X-)");
      display.println("(3)SUHIZ         ");
      display.println("(4)ZAMAN         ");
      display.println("(5)NEMAL         ");
      display.println("(6)ISIAL         ");
      display.println("(7)BAKIM         ");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
    else if (menu_pages == 3)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON         ");
      display.println("(2)SUISI         ");
      display.println("(3)SUHIZ    (-X-)");
      display.println("(4)ZAMAN         ");
      display.println("(5)NEMAL         ");
      display.println("(6)ISIAL         ");
      display.println("(7)BAKIM         ");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
    else if (menu_pages == 4)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON         ");
      display.println("(2)SUISI         ");
      display.println("(3)SUHIZ         ");
      display.println("(4)ZAMAN    (-X-)");
      display.println("(5)NEMAL         ");
      display.println("(6)ISIAL         ");
      display.println("(7)BAKIM         ");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
    else if (menu_pages == 5)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON         ");
      display.println("(2)SUISI         ");
      display.println("(3)SUHIZ         ");
      display.println("(4)ZAMAN         ");
      display.println("(5)NEMAL    (-X-)");
      display.println("(6)ISIAL         ");
      display.println("(7)BAKIM         ");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
    else if (menu_pages == 6)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON         ");
      display.println("(2)SUISI         ");
      display.println("(3)SUHIZ         ");
      display.println("(4)ZAMAN         ");
      display.println("(5)NEMAL         ");
      display.println("(6)ISIAL    (-X-)");
      display.println("(7)BAKIM         ");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
    else if (menu_pages == 7)
    {
      display.clearDisplay();
      display.setCursor(0, 0);
      display.println("(1)PIKON         ");
      display.println("(2)SUISI         ");
      display.println("(3)SUHIZ         ");
      display.println("(4)ZAMAN         ");
      display.println("(5)NEMAL         ");
      display.println("(6)ISIAL         ");
      display.println("(7)BAKIM    (-X-)");
      display.println("     VERSION :: 1.0.0");
      display.display(); // Ekrana yazdır
    }
  }
}
void pikon_run()
{
  if (pikon_run_bool)
  {
    if (button1Pressed)
    {
      button1Pressed = false;
      digitalWrite(BTS7960_IO_1, HIGH);
      digitalWrite(BTS7960_IO_2, LOW);
      analogWrite(BTS7960_PWM, 255);
      delay(500);
      button1Pressed = false;
      analogWrite(BTS7960_PWM, 0);
    }
    else if (button2Pressed)
    {
      button2Pressed = false;
      digitalWrite(BTS7960_IO_1, LOW);
      digitalWrite(BTS7960_IO_2, HIGH);
      analogWrite(BTS7960_PWM, 255);
      delay(500);
      button2Pressed = false;
      analogWrite(BTS7960_PWM, 0);
    }
  }
}
void pikon()
{
  if (pikon_bool)
  {
    if (mypikon_mode == true)
    {
      mypikon_mode = true;
      display.clearDisplay();
      display.setCursor(0, 0);
      display.print("PIKON == ");
      display.print("ON");
    }
    else if (mypikon_mode == false)
    {
      mypikon_mode = false;
      display.clearDisplay();
      display.setCursor(0, 0);
      display.print("PIKON == ");
      display.print("OFF");
    }
    display.display(); // Ekrana yazdır
    if (button3Pressed)
    {
      button3Pressed = false;
      if (mypikon_mode == true)
      {
        mypikon_mode = false;
      }
      else
      {
        mypikon_mode = true;
      }
    }
    if ((mypikon_mode == false) && button3Pressed3sec)
    {
      button3Pressed3sec = false;
      display.clearDisplay();
      pikon_bool = false;
      pikon_run_bool = false;
      anasayfa_bool = true;
    }
    else if ((mypikon_mode == true) && button3Pressed3sec)
    {
      button3Pressed3sec = false;
      display.clearDisplay();
      display.setCursor(0, 0);
      pikon_run_bool = true;
      display.display(); // Ekrana yazdır
    }
  }
}
void menu()
{
  if (menu_bool == true)
  {
    menu_pages = degisim_oku(7, 1, menu_pages);
    menu_alt1();
    if (((menu_pages == 1) && button3Pressed))
    {
      button3Pressed = false;
      menu_bool = false;
      pikon_bool = true;
    }
    else if ((menu_pages == 2) && button3Pressed)
    {
      button3Pressed = false;
      menu_bool = false;
      SUISI_TEMP_bool = true;
    }
    else if ((menu_pages == 3) && button3Pressed)
    {
      button3Pressed = false;
      /* code */
    }
    else if ((menu_pages == 4) && button3Pressed)
    {
      button3Pressed = false;
      /* code */
    }
    else if ((menu_pages == 5) && button3Pressed)
    {
      button3Pressed = false;
      /* code */
    }
    else if ((menu_pages == 6) && button3Pressed)
    {
      button3Pressed = false;
      /* code */
    }
    else if ((menu_pages == 7) && button3Pressed)
    {
      button3Pressed = false;
      /* code */
    }
  }
}
void setup()
{
  Serial.begin(9600);
  pinMode(BT1, INPUT_PULLUP);   // Button 1 - interrupt YUKARI
  pinMode(BT2, INPUT_PULLUP);   // Button 2 - interrupt AŞAĞI
  pinMode(BT3, INPUT_PULLUP);   // Button 3 - polling
  pinMode(BTS7960_PWM, OUTPUT); // BTS7960 MOTOR PWM
  pinMode(SUMOTOR, OUTPUT);     // Dozaj Su MOTOR PWM BJT Mosfet Kontrol
  pinMode(ISIALARM, OUTPUT);    // Isıtıcı Alarm Rölesi
  // pinMode(ALTSOFTWARE_RX, OUTPUT);       // Altsoftware Serial 8
  // pinMode(ALTSOFTWARE_TX, OUTPUT);       // Altsoftware Serial 9
  pinMode(BUZZER, OUTPUT);       // PWM Buzzer Çıkışı
  pinMode(FANALARM, OUTPUT);     // Fan Alarm Rölesi
  pinMode(SUALARM, OUTPUT);      // Su Isıtıcı Rölesi
  pinMode(NEMALARM, OUTPUT);     // Nem Alarm Rölesi
  pinMode(SUSICAKLIK, INPUT);    // Nem Alarm Rölesi
  pinMode(KAPILIMIT, INPUT);     // Nem Alarm Rölesi
  pinMode(BTS7960_IO_1, OUTPUT); // Nem Alarm Rölesi
  pinMode(BTS7960_IO_2, OUTPUT); // Nem Alarm Rölesi

  attachInterrupt(digitalPinToInterrupt(2), handleButton1, LOW);
  attachInterrupt(digitalPinToInterrupt(3), handleButton2, LOW);

  // OLED ekranı başlat
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C))
  {
    Serial.begin(9600);
    Serial.println(F("OLED ERR!"));
    while (true)
      ; // Dur
  }
  display.setTextSize(1); // Yazı boyutu
}
void loop()
{
  currentMillis = millis();
  if (digitalRead(4) == LOW)
  {
    if ((currentMillis - BT3_pressTime_previous) >= interval1)
    {
      BT3_pressTime_previous = currentMillis;
      button3Pressed3sec = true;
      button3Pressed = false;
      delay(100);
    }
    else if (((currentMillis - BT3_pressTime_previous) >= (interval1 / 4)) && (button3Pressed3sec == false))
    {
      button3Pressed = true;
    }
  }
  else
  {
    BT3_pressTime_previous = currentMillis;
    ////////////////BT3 END
    if ((button3Pressed3sec && menu_bool == false) && (anasayfa_bool == true))
    {
      menu_bool = true;
      button3Pressed3sec = false;
      button3Pressed = false;
      anasayfa_bool = false;
      display.clearDisplay();
      delay(100);
    }
    Read_NTC10k();
    anasayfa();
    menu();
    pikon();
    pikon_run();
    SUISI();
  }
}