// Project abandoned 
// last change log:
// 05/04/2024
// organized wires
// removed LEDs because it was not working correctlly
// the oled display is enough

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

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

const int numPins = 6;
const int buttonPins[numPins] = {2, 3, 4, 5, 6, 7};
const int analogPins[4] = {A0, A1, A2, A3};
const int maxAnalogValue = 1023;
const String pinsnames[4] = {"DISCORD", "BROWSER" , "MIC" , "ELSE"};

void setup() {
  Serial.begin(9600);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }

  for(int i=0; i<numPins; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
    pinMode(analogPins[i], INPUT);
  }

  display.clearDisplay();
}

void loop() {
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);

  for (int i = 0; i < 4; i++) {
    int sensorValue = analogRead(analogPins[i]);
    float percentage = (sensorValue / (float)maxAnalogValue) * 100.0;
    int barLength = map(sensorValue, 0, maxAnalogValue, 0, SCREEN_WIDTH); 

    display.setCursor(0, i*14);
    display.print(pinsnames[i]);
    display.print(": ");
    display.print(percentage);
    display.println("%");

    display.drawFastHLine(0, (i)*14+9, barLength, WHITE);
    display.drawFastHLine(0, (i)*14+10, barLength, WHITE);
  }

  for (int i = 0; i < numPins; i++) {
    int buttonState = digitalRead(buttonPins[i]);

    if(buttonState == LOW) {
      display.setCursor(0, 55);
      display.print("Button ");
      display.print(i+1);
      display.println(" is pressed");
      display.println(i);
    }
  }
  display.display();
  delay(100);
}