#include <ezButton.h>  
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
 HTTPClient http;
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const String serverUrl = "http://129.151.244.160/API/";
unsigned const long interval = 2000;
unsigned long zero = 0;
int CLK_PIN= 25 , DT_PIN =26 , SW_PIN =27, DIRECTION_CW =0  , DIRECTION_CCW=1  ;
int counter = 0, direction = DIRECTION_CW;
int CLK_state, prev_CLK_state;
int lcdColumns = 16, lcdRows = 2;
int id = 1 ;
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows); 
ezButton button(SW_PIN);  
void setup() {
 initProject();
 getRecords();
}

void loop() {
  button.loop();  
  CLK_state = digitalRead(CLK_PIN);
  if (CLK_state != prev_CLK_state && CLK_state == HIGH) {
    if (digitalRead(DT_PIN) == HIGH) {
      counter++;
    }

   lcd.setCursor(0, 0);
      lcd.print("Distance: ");
      lcd.setCursor(0, 1);
      lcd.print(counter);
  }
  prev_CLK_state = CLK_state;
}
void wifiConnect(){
   Serial.begin(115200);
  WiFi.begin(ssid, password);
  while(WiFi.status() != WL_CONNECTED){
    delay(100);
    Serial.println(".");
  }
}
void initLCD(){
  lcd.init();                    
  lcd.backlight();
}
void initSensor(){
   pinMode(CLK_PIN, INPUT);
  pinMode(DT_PIN, INPUT);
  button.setDebounceTime(50); 
  prev_CLK_state = digitalRead(CLK_PIN);
}
void initProject(){
wifiConnect();
initLCD();
initSensor();
}
void getRecords(){
  if(millis()-zero > interval){
    String link =  serverUrl+"getRecords.php?id"+id;
    http.begin(link);
    int httpResponCode = http.GET();
    if(httpResponCode > 0){
      String payload = http.getString();
      Serial.println(payload);
      char json[500];
      payload.toCharArray(json,500);
      StaticJsonDocument <200> doc ;
      deserializeJson(doc,json);
      lcd.setCursor(0, 0);
      lcd.print("Distance: ");
      lcd.setCursor(0, 1);
      int distance = doc["distance"] ;
      lcd.print(distance);
      lcd.print("cm");
    }else{
      Serial.print("error ");
      Serial.println(httpResponCode);
    }
    zero = millis();
  }
}