#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define lebar 128
#define tinggi 64
#define OLED_RESET     -1
#define SCREEN_ADDRESS 0x3C
#define RED 11
#define GREEN 10
#define BLUE 9
#define potR A0
#define potG A1
#define potB A2

int valueR;
int valueG;
int valueB;
Adafruit_SSD1306 oled(lebar, tinggi, &Wire, OLED_RESET);

void printCenter(String text, String mode, int tinggiTeks = 0, int ukuranText = 1, String warna = "putih") {
  int16_t x1, y1;
  uint16_t w, h;
  uint16_t textColor;
  if (warna == "putih") {
    textColor = SSD1306_WHITE;
  } else if (warna == "hitam") {
    textColor = SSD1306_BLACK;
  } else if (warna == "invert") {
    textColor = SSD1306_INVERSE;
  }
  if (mode == "normal") {
    oled.getTextBounds(text, 0, tinggiTeks, &x1, &y1, &w, &h);
    while (w > lebar && text.length() > 0) {
      text.remove(text.length() - 1);
      text.trim();
      text += "...";
      oled.getTextBounds(text, 0, tinggiTeks, &x1, &y1, &w, &h);
    }
    int x = (lebar - w) / 2;
    oled.setTextSize(ukuranText);
    oled.setTextColor(textColor);
    oled.setCursor(x, tinggiTeks);
    oled.println(text);
  } else if (mode == "full") {
    oled.getTextBounds(text, 0, 0, &x1, &y1, &w, &h);
    while (w > lebar && text.length() > 0) {
      text.remove(text.length() - 1);
      text.trim();
      text += "...";
      oled.getTextBounds(text, 0, 0, &x1, &y1, &w, &h);
    }
    int x = (lebar - w) / 2;
    int y = (tinggi - h) / 2;
    oled.setTextSize(ukuranText);
    oled.setTextColor(textColor);
    oled.setCursor(x, y);
    oled.println(text);
  }
}

void Color() {
  int potValueR = analogRead(potR);
  int potValueG = analogRead(potG);
  int potValueB = analogRead(potB);
  valueR = map(potValueR, 0, 1023, 0, 255);
  valueG = map(potValueG, 0, 1023, 0, 255);
  valueB = map(potValueB, 0, 1023, 0, 255);
  String dataMerah = "Merah = " + String(valueR) + "%";
  String dataHijau = "Hijau = " + String(valueG) + "%";
  String dataBiru = "Biru = " + String(valueB) + "%";
  oled.clearDisplay();
  printCenter(dataMerah, "normal", 18);
  printCenter(dataHijau, "full");
  printCenter(dataBiru, "normal", 38);
  oled.display();
}

void setup() {
  Serial.begin(9600);
  Wire.begin();
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
  if (!oled.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("OLED gagal dimulai"));
    while (true);
  }
  oled.clearDisplay();
  printCenter("Color RGB Maker", "full");
  oled.display();
  delay(3000);
}

void loop() {
  Color();
  analogWrite(RED, valueR);
  analogWrite(GREEN, valueG);
  analogWrite(BLUE, valueB);
  delay(50);
}