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

#define MOISTURE_PIN 32
#define BUTTON_PIN 2

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int buttonState = HIGH;
int lastButtonState = HIGH;
bool newDataAvailable = false;

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.println("Soil Moisture");
  display.display();
}

void loop() {
  buttonState = digitalRead(BUTTON_PIN);

  if (buttonState == LOW && lastButtonState == HIGH) {
    int moistureValue = random(0,1023);
    int percentage = map(moistureValue, 0, 1023, 0, 100);

    display.clearDisplay();
    display.setCursor(0, 0);
    display.setTextSize(1);
    display.print("Moisture Level:");
    display.setCursor(0, 20);
    display.setTextSize(3);
    display.print(percentage);
    display.print("%");
    display.display();

    newDataAvailable = true;
  }

  lastButtonState = buttonState;

  if (newDataAvailable) {
    newDataAvailable = false;
    delay(1000);
  }
}