#define CLK 2
#define DT 4
#define SW 3
#define reley 13
#define led 12

#include <U8g2lib.h>
U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0,  A5,  A4, U8X8_PIN_NONE); 

#include <GyverHTU21D.h>
GyverHTU21D htu;

#include "GyverEncoder.h"
Encoder enc1(CLK, DT, SW);

int value_s = 50; 
int value_r = 0;
int value_h = 0;
int value_hower = 0;
int value_min = 30;

bool flag_start = false;
bool flag_set = false;

void setup() {
  Serial.begin(9600);
  htu.begin();  
  u8g2.begin();
  enc1.setType(TYPE2);
  
  pinMode(reley, OUTPUT);
  pinMode(led, OUTPUT);

  oled();
}

void loop() {
  enc1.tick();
  
  if(flag_set == false){
    if (enc1.isRight()) value_s++;   
    if (enc1.isLeft()) value_s--; 
    
    if (enc1.isRightH()) value_s += 5; 
    if (enc1.isLeftH()) value_s -= 5; 
  } else {
    if (enc1.isRight() or enc1.isRightH() and value_hower != 24){
      value_min += 30;
      if (value_min == 60) {
        value_min = 0;
        value_hower += 1;
      }
      if(value_hower >= 24){
        value_hower = 24;
        value_min = 0;
      } 
    }
    if (enc1.isLeft()){
      if (value_min <= 0 and value_hower != 0) {
        value_min -= 30;
        value_min = 30;
        value_hower -= 1;
      } else if (value_min == 30){
        value_min -= 30;
        value_min = 0;
      }
    }
  }


  if (enc1.isPress()) flag_start = !flag_start;
  if (enc1.isClick()) flag_set = !flag_set;

  if (enc1.isTurn()) {      
    value_s = constrain(value_s, 0, 100);
    oled();
  }

  unsigned long i = ((value_hower * 60) + value_min) * 60000;

  digitalWrite(led, flag_start);

  if(flag_start == true and value_r <= value_s){
    timer(i);
  } else {
    digitalWrite(reley, LOW);
  }
}

void oled(){
  u8g2.firstPage();
  do {
    u8g2.setFont(u8g2_font_unifont_t_symbols);
    u8g2.setCursor(0, 10);
    u8g2.print("Set: ");
    u8g2.print(value_s);
    u8g2.print("*C/");
    u8g2.print(value_hower);
    u8g2.print(":"); 
    u8g2.print(value_min);
    u8g2.print("h");
    
    u8g2.setCursor(0, 30);
    u8g2.print("Real: ");
    u8g2.print(value_r);
    u8g2.print("*C");

    u8g2.setCursor(0, 50);
    u8g2.print("Humi: ");
    u8g2.print(value_h);
    u8g2.print("%");
  } while (u8g2.nextPage());
}

void temp(){
  value_r = htu.getTemperature();
  value_h = htu.getHumidity();
}


unsigned long previousMillis = 0; 

void timer(unsigned long inter){

  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= 1000) {
    Serial.println("nfqvth");
    digitalWrite(reley, HIGH);
    previousMillis = currentMillis;
  }

}