#include "DHTesp.h"
const int DHT_PIN = 15;
DHTesp dhtSensor;

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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64 
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

//eeprom
#include <EEPROM.h>
#define EEPROM_SIZE 64
int address_1 = 0;
int address_2 = 1;

#define upButton 27   // Pin untuk tombol up
#define downButton 14 // Pin untuk tombol down
#define modeButton 12 // Pin untuk tombol mode

#define relayPin 5
const int buttonPin = 2;
int batas_suhu = 20;
int buttonState = 0;
int counter = 0;
unsigned long startMillis;
unsigned long currentMillis;
const unsigned long periodMillis = 1000;

void setup() {
  Serial.begin(115200);
  pinMode(upButton, INPUT_PULLUP);
  pinMode(downButton, INPUT_PULLUP);
  pinMode(modeButton, INPUT_PULLUP);
  pinMode(relayPin, OUTPUT);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  //menginisiasi membaca nilai flag dari eeprom
  EEPROM.begin(EEPROM_SIZE);
  
  //Hanya Untuk Simulasi,Comment Jika dialat langsung
  EEPROM.write(address_1, counter);
  EEPROM.write(address_2, batas_suhu);
  EEPROM.commit();

  counter = EEPROM.read(address_1);
  batas_suhu = EEPROM.read(address_2);
  
  digitalWrite(relayPin, LOW);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(500);
  display.clearDisplay();
  display.setTextColor(WHITE);
}

void loop() {
  if (digitalRead(upButton) == LOW) {
    batas_suhu++; // Menambah nilai suhu
    EEPROM.write(address_2, batas_suhu);
    EEPROM.commit();
  }
  if (digitalRead(downButton) == LOW) {
    batas_suhu--; // Mengurangi nilai suhu
    EEPROM.write(address_2, batas_suhu);
    EEPROM.commit();
  }
  if (digitalRead(modeButton) == LOW) {
    counter++;
    EEPROM.write(address_1, counter);
    EEPROM.commit();
     if (counter > 1) {
      counter = 0;
      EEPROM.write(address_1, counter);
      EEPROM.commit();
    }
    delay(200);
  }

  delay(50); // delay untuk debouncing
  
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  if (data.temperature >= batas_suhu && counter == 1) {
    digitalWrite(relayPin, HIGH);
  }
  else if (data.temperature <= batas_suhu && counter == 0) {
    digitalWrite(relayPin, HIGH);
  }
  else {
    digitalWrite(relayPin, LOW);
  }

  // clear display
  display.clearDisplay();
  // display temperature
  display.setTextSize(1);
  display.setCursor(0,0);
  display.print("Suhu ");
  display.setTextSize(1.8);
  display.setCursor(0,10);
  display.print(data.temperature);
  display.print(" ");
  display.setTextSize(1);
  display.cp437(true);
  display.write(167);
  display.setTextSize(1);
  display.print("C");
  
  // display humidity
  display.setTextSize(1);
  display.setCursor(0, 30);
  display.print("Kelembaban ");
  display.setTextSize(1.8);
  display.setCursor(0, 40);
  display.print(data.humidity);
  display.print(" %"); 

  display.setTextSize(1);
  display.setCursor(60,0);
  display.print("|");
  display.setCursor(60,10);
  display.print("|");
  display.setCursor(60,20);
  display.print("|");
  display.setCursor(60,30);
  display.print("|");
  display.setCursor(60,40);
  display.print("|");
  display.setTextSize(1);
  display.setCursor(0,48);
  display.print("---------------------");

  // display 
  display.setTextSize(1);
  display.setCursor(66,30);
  display.print("Batas Suhu :");
  display.setCursor(84,40);
  display.print(batas_suhu);
  display.cp437(true);
  display.write(167);
  display.setTextSize(1);
  display.print("C");

  if (counter == 1) {
  display.setTextSize(1);
  display.setCursor(66,0);
  display.print("Mode Batas");
  display.setCursor(84,10);
  display.print("Atas");
  }
  else {
  display.setTextSize(1);
  display.setCursor(66,0);
  display.print("Mode Batas");
  display.setCursor(84,10);
  display.print("Bawah");
  }

  if (digitalRead(relayPin) == HIGH) {
    Serial.println("Kondisi Relay ON");
    display.setTextSize(1);
    display.setCursor(15,55);
    display.print("Kondisi Relay ON");
  }
  else {
    Serial.println("Kondisi Relay OFF");
    display.setTextSize(1);
    display.setCursor(15,55);
    display.print("Kondisi Relay OFF");
  }

  display.display(); 

  if (counter == 1) {
    Serial.println("Mode Atas");
  }
  else {
    Serial.println("Mode Bawah");
  }
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("Counter : " + String(counter));
  Serial.println("Batas : " + String(batas_suhu));
  Serial.println("---");
  delay(1000);
}