#include <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27
#define LCD_COLS 16
#define LCD_ROWS 2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLS, LCD_ROWS);

const int ledRedPin = 27;
const int ledGreenPin = 26;
const int ledBluePin = 25;

const int lm35Pin = 23;

const int sliderPin = 13;

const int relayPin = 4;

String relayState = "Off";

int sliderValue = 0;

const float BETA = 3950; // should match the Beta Coefficient of the thermistor

void drawProgressBar(int progress, int maxProgress) {
  int progressBarWidth = LCD_COLS - 2;  // Leave space for borders
  int filledBarWidth = progressBarWidth * progress / maxProgress;

  lcd.setCursor(0, 1);
  lcd.print("[");
  for (int i = 0; i < progressBarWidth; i++) {
    if (i < filledBarWidth) {
      lcd.print("#");
    } else {
      lcd.print(" ");
    }
  }
  lcd.print("]");
}

void setColor(int redValue, int greenValue, int blueValue) {
  analogWrite(ledRedPin, redValue);
  analogWrite(ledGreenPin, greenValue);
  analogWrite(ledBluePin, blueValue);
}

void setup() {

  analogReadResolution(10);

  pinMode(ledRedPin, OUTPUT);
  pinMode(ledGreenPin, OUTPUT);
  pinMode(ledBluePin, OUTPUT);

  pinMode(lm35Pin, INPUT);
  pinMode(relayPin, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.clear();

  Serial.begin(9600);
}

void loop() {


  int analogValue = analogRead(lm35Pin);
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  sliderValue = analogRead(sliderPin) / 4; // Adjust the division factor based on the range of your slider


  int desiredTemp = map(sliderValue, 0, 255, 0, 80);

  lcd.setCursor(0, 0);
  lcd.print("Temp:");
  lcd.print(celsius);
  lcd.print(" C");


  drawProgressBar(desiredTemp, 80);

  if (temperature <= desiredTemp) {
    setColor(255, 0, 0);
  } else if (temperature >= desiredTemp) {
    setColor(0, 255, 0);

  }

  Serial.println(analogValue);
  Serial.println(desiredTemp);
  Serial.println(temperature);
  Serial.println(relayState);

  delay(1000);

}