#include<TFT_eSPI.h>
 #include<lvgl.h>
// #include <Adafruit_FT6206.h>

// Adafruit_FT6206 ctp = Adafruit_FT6206();

// The display also uses hardware SPI,
#define TFT_MISO 13
#define TFT_MOSI 11
#define TFT_SCLK 12
#define TFT_CS   10
#define TFT_DC   14 
TFT_eSPI tft  = TFT_eSPI();

bool levelMinuman1[3] = {0,0,0};
bool levelMinuman2[3] = {0,0,0};

// Pin GPIO yang dipakai
const int pinlevelMinuman1[3] = {19,20,21};
const int pinlevelMinuman2[3] = {47,48,45};
const int pinValveMinuman[6] = {16, 15, 7, 6, 5, 4};

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Program Dispenser 6 Galon Berjalan !");
  pinMode(42, INPUT_PULLUP); // tombol minuman2
  pinMode(41, INPUT_PULLUP); // tombol minuman1
  pinMode(40, INPUT_PULLUP); // flow minuman1
  pinMode(39, INPUT_PULLUP); // flow minuman1
  pinMode(38, INPUT_PULLUP); // flow minuman2
  pinMode(37, INPUT_PULLUP); // flow minuman2
  pinMode(35, OUTPUT);  // valve dan pompa minuman 1
  pinMode(36, OUTPUT);  // valve dan pompa minuman 2
  for(int i=0;i<3;i++){
    pinMode(pinlevelMinuman1[i], INPUT_PULLUP);
    pinMode(pinlevelMinuman2[i], INPUT_PULLUP);
  }
  for(int i=0;i<6;i++){
    pinMode(pinValveMinuman[i],OUTPUT);
    digitalWrite(pinValveMinuman[i], LOW);
  }
  tft.init();
  tft.setRotation(0);
  tft.drawString("Selamat Datang", 0, 0, 2);
}

int galondibuka;
bool lastclk1=1, clk1now=1, lastclk2=1, clk2now=1;
bool button1Old=1, button1Now=1, button2Old=1, button2Now=1;
bool lastdt1=1, dt1now=1, lastdt2=1, dt2now=1;
bool inTransaction1, inTransaction2, startTransaction1, startTransaction2;
const float maxMinuman1 = 8.5, maxMinuman2=7.5;
const float increment=0.5; //perubahan tiap terbaca encoder sebanyak 0.5ml (masih asumsi)
float volume1,volume2;

void loop() {
  if(Serial.available()>0){
    String dt=Serial.readStringUntil('\n');
    dt.trim();
    if(dt == "minuman1"){
      startTransaction1=true;
      Serial.println("Mulai transaksi 1, tekan tombol minuman1 untuk memulai");
    }else if (dt == "minuman2"){
      startTransaction2=true;
      Serial.println("Mulai transaksi 2, tekan tombol minuman2 untuk memulai");
    }
  }
  if(startTransaction1){
    button1Now = digitalRead(41);
    if(button1Now != button1Old){
      if(button1Now==LOW){
        inTransaction1=true;
        Serial.println("masuk transaksi 1");
        galondibuka = cekgalonkosong(true);      
        if(galondibuka!=9){
          digitalWrite(pinValveMinuman[galondibuka], HIGH);
        }else{
          Serial.println("Semua galon minuman 1 sudah kosong, silahkan isi kembali");
        }
        Serial.println("Galon no :"+String(galondibuka)+" dibuka");
        delay(5000);
        startTransaction1=false;
      }
      button1Old=button1Now;
    }
  }
  if(startTransaction2){
    button2Now = digitalRead(42);
    if(button2Now != button2Old){
      if(button2Now==LOW){
        inTransaction2=true;
        Serial.println("masuk transaksi 2");
        galondibuka = cekgalonkosong(true);      
        if(galondibuka!=99){
          digitalWrite(pinValveMinuman[galondibuka], HIGH);
        }else{
          Serial.println("Semua galon minuman 2 sudah kosong, silahkan isi kembali");
        }
        Serial.println("Galon no :"+String(galondibuka)+" dibuka");
        delay(5000);
        startTransaction2=false;
      }
      button2Old=button2Now;
    }
  }

  if(inTransaction1){
    digitalWrite(35, HIGH);
    clk1now=digitalRead(39);
    dt1now=digitalRead(40);
    if(clk1now!=lastclk1){
      if(clk1now == LOW){
        if (clk1now != dt1now){
          // Serial.println("arah         Clock Wise - KANAN");
          volume1+=increment;
        }else{
          // Serial.println("arah Counter Clock Wise - KIRI");
          volume1-=increment;
        }
      }
    }
    lastdt1 = dt1now;
    lastclk1=clk1now;
    Serial.println("volume1 : "+String(volume1));
    if(volume1 >= maxMinuman1){
      inTransaction1=false;
      digitalWrite(35, LOW);
      volume1=0;
      Serial.println("Transaksi Selesai");
    }
  }
  if(inTransaction2){
    digitalWrite(36, HIGH);
    clk2now=digitalRead(37);
    dt2now=digitalRead(38);
    if(clk2now!=lastclk2){
      if(clk2now == LOW){
        if (clk2now != dt2now){
          // Serial.println("arah         Clock Wise - KANAN");
          volume2+=increment;
        }else{
          // Serial.println("arah Counter Clock Wise - KIRI");
          volume2-=increment;
        }
      }
    }
    lastdt2 = dt2now;
    lastclk2=clk2now;
    Serial.println("volume2 : "+String(volume2));
    if(volume2 >= maxMinuman2){
      inTransaction2=false;
      digitalWrite(36, LOW);
      volume2=0;
      Serial.println("Transaksi Selesai");
    }
  }
  if(inTransaction1==false && inTransaction2 == false){
    for(int i=0;i<6;i++){
      digitalWrite(pinValveMinuman[i],LOW);
    }
  }
  delay(1); // this speeds up the simulation
}

int cekgalonkosong(bool galonminuman1){
  if(galonminuman1 == true){
    for(int i=0;i<3;i++){
      levelMinuman1[i] = digitalRead(pinlevelMinuman1[i]);
    }
    if(levelMinuman1[0] && levelMinuman1[1] && levelMinuman1[2]){
      return 0;
    }else if(!levelMinuman1[0] && levelMinuman1[1] && levelMinuman1[2]){
      return 1;
    }else if(!levelMinuman1[0] && !levelMinuman1[1] && levelMinuman1[2]){
      return 2;
    }else if(!levelMinuman1[0] && levelMinuman1[1] && levelMinuman1[2]){
      return 9;
    }
  }else {
    for(int i=0;i<3;i++){
      levelMinuman2[i] = digitalRead(pinlevelMinuman2[i]);
    }
    if(levelMinuman2[0] && levelMinuman2[1] && levelMinuman2[2]){
      return 3;
    }else if(!levelMinuman2[0] && levelMinuman2[1] && levelMinuman2[2]){
      return 4;
    }else if(!levelMinuman2[0] && !levelMinuman2[1] && levelMinuman2[2]){
      return 5;
    }else if(!levelMinuman2[0] && levelMinuman2[1] && levelMinuman2[2]){
      return 99;
    }
  }
}