#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSansBold9pt7b.h>
#include <Fonts/Picopixel.h>

#define ENCODER_CLK 22
#define ENCODER_DT  23
#define ENCODER_SW  14

int mesafe = 0;
int HIZ = 0;
uint8_t ivme = 0;
uint8_t mikro = 0;
//int imesafe = 0;

typedef enum {
  AYR_MESAFE,
  AYR_HIZ,
  AYR_IVME,
  AYR_MIKRO,
} MOD;

MOD Mod = AYR_MESAFE;

Adafruit_SSD1306 OLED(128, 64, &Wire, -1);

void sonrakiMod() {
  switch (Mod) {
    case AYR_MESAFE:
      Mod = AYR_HIZ;
      break;

    case AYR_HIZ:
      Mod = AYR_IVME;
      break;

    case AYR_IVME:
      Mod = AYR_MIKRO;
      break;
     case AYR_MIKRO:
      Mod = AYR_MESAFE;
      break;


  }
}
//-----------------------------------------------------------------
void GUNCELLE_DEGER(int carpan) {
  switch (Mod) {
    case AYR_MESAFE:
     mesafe = constrain(mesafe + carpan, 0, 80);

    //   imesafe = map(mesafe,0,80, 0, 360);
      break;

    case AYR_HIZ:
      HIZ = constrain(HIZ + carpan, 0, 80);
      break;

    case AYR_IVME:
      ivme = constrain(ivme + carpan, 0, 80);
      break;

      case AYR_MIKRO:
      mikro = constrain(mikro + carpan, 0, 80);
      break; 
  }
}

//-------------------------------------------------------------------------

void GUNCELLE_OLED() {
  OLED.clearDisplay();
  OLED.setFont();
  OLED.setTextColor(1);

  OLED.setCursor(6, 2); OLED.print("MSF");
  OLED.drawRoundRect(24, 2, 82, 7, 2, WHITE);
  OLED.fillRect(25, 3, mesafe, 5, WHITE);
   OLED.setCursor(110, 2); OLED.print(mesafe*4.5);
  if (Mod == AYR_MESAFE) {
    OLED.setCursor(0, 2); OLED.print(">");
    
  }

  OLED.setCursor(6, 12);  OLED.print("HIZ");
  OLED.drawRoundRect(24, 12, 82, 7, 2, WHITE);
  OLED.fillRect(25, 13,HIZ, 5, WHITE);
   OLED.setCursor(110, 12); OLED.print(HIZ);
  if (Mod == AYR_HIZ) {
    OLED.setCursor(0, 12); OLED.print(">");
    
  }

  OLED.setCursor(6, 22);  OLED.print("ivm");
  OLED.drawRoundRect(24, 22, 82, 7, 2, WHITE);
  OLED.fillRect(25, 23, ivme, 5, WHITE);
   OLED.setCursor(110, 22); OLED.print(ivme);
  if (Mod == AYR_IVME) {
    OLED.setCursor(0, 22); OLED.print(">");
   
  }

 OLED.setCursor(6, 32);  OLED.print("MKR");
  OLED.drawRoundRect(24, 32, 82, 7, 2, WHITE);
  OLED.fillRect(25, 33, mikro, 5, WHITE);
   OLED.setCursor(110, 32); OLED.print(mikro);
  if (Mod == AYR_MIKRO) {
    OLED.setCursor(0, 32); OLED.print(">");
   
  }

Serial.print("mesafe=");Serial.print(mesafe*4.5);
Serial.print(" HIZ=");Serial.print(HIZ);
Serial.print(" ivme=");Serial.print(ivme);

Serial.print(" mikro=");Serial.println(mikro);

  OLED.display();
}
//--------------------------------------------------------------
void setup() {
  OLED.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  pinMode(ENCODER_CLK, INPUT);
  pinMode(ENCODER_DT, INPUT);
  pinMode(ENCODER_SW, INPUT_PULLUP);
  Serial.begin(115200);
  GUNCELLE_OLED();
}
//---------------------------------------------------------------

long int SonDegisenMod = 0;
int eskiKlk = HIGH;
void loop() {
  if (digitalRead(ENCODER_SW) == LOW && millis() - SonDegisenMod > 300) {
    SonDegisenMod = millis();
    sonrakiMod();
    GUNCELLE_OLED();
  }

  int clk = digitalRead(ENCODER_CLK);
  if (clk != eskiKlk && clk == LOW) {
    int dt = digitalRead(ENCODER_DT);
    int carpan = dt == HIGH ? 1 : -1;
    GUNCELLE_DEGER(carpan);
    GUNCELLE_OLED();
  }
  eskiKlk = clk;
}