#include <Arduino.h>
#include "HX711.h"
#include <OneWire.h>
#include <DallasTemperature.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ArduinoJson.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266WebServer.h>

const char* ssid = "Asus_Rog_E";     // Ganti dengan SSID WiFi Anda
const char* password = "cekduluaja"; // Ganti dengan password WiFi Anda

const int TRIGPIN = D5;          
const int ECHOPIN = D3;
const int oneWireBus = D6; //DS18B20
const int irSensorPin = D1; //Sensor IR
const int LOADCELL_DOUT_PIN = D7;
const int LOADCELL_SCK_PIN = D8;
const int relay = D2;

const float beratKalengkosong = 56.9;
const float beratKalengpenuh = 471.0;
const float tinggiTabung = 36; 
const float persentaseTinggiTabung = 0.3; // 30%
const float suhumin = 20;
const float suhumax = 75;

long timer;
int jarak;
int suhu;
int statusRelay;
HX711 scale;

OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);

void setupLoadcell() {
  Serial.println("Before setting up the scale:");
  Serial.print("read: \t\t");
  Serial.println(scale.read());
  
  Serial.print("read average: \t\t");
  Serial.println(scale.read_average(20));
  
  Serial.print("get value: \t\t");
  Serial.println(scale.get_value(5));
  
  Serial.print("get units: \t\t");
  Serial.println(scale.get_units(5), 1);

  scale.set_scale(209.984);
  scale.tare();
  
  Serial.println("After setting up the scale:");

  Serial.print("read: \t\t");
  Serial.println(scale.read());
  
  Serial.print("read average: \t\t");
  Serial.println(scale.read_average(20));
  
  Serial.print("get value: \t\t");
  Serial.println(scale.get_value(5));

  Serial.print("get units: \t\t");
  Serial.println(scale.get_units(5), 1);

  Serial.println("Successful Initialization of HX711");
}

void kirim_data(){

  String postData = (String)"ultrasonic=" + jarak + "&infrared=" + readIrsensor() 
  + "&valve=" + statusRelay + "&loadcell=" + suhu + "&suhu=" + suhu; 
  
  HTTPClient http;
  http.begin(WiFiClient,"http://192.168.137.10/TestApi/update.php");            
  http.addHeader("Content-Type", "application/x-www-form-urlencoded");  

  int httpCode = http.POST(postData);   
  String payload = http.getString();   
  
  Serial.println(postData); 
  Serial.println(payload);   

  http.end(); 
}

void setup() {
  Serial.begin(115200);
  digitalWrite(relay, HIGH);

  WiFi.mode(WIFI_OFF);        
  delay(1000);
  WiFi.mode(WIFI_STA); 
  
  WiFi.begin(ssid, password); 
  Serial.println("");

   Serial.print("Connecting");
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());  //IP address assigned to your ESP

  Serial.println("STARTING");
  delay(1500);
  Serial.println("PASTIKAN TIDAK ADA BENDA PADA LOADCELL");
  delay(3000);
  Serial.println("Starting Initialization of HX711");
  delay(1000);
  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
  pinMode(ECHOPIN, INPUT);
  pinMode(TRIGPIN, OUTPUT);
  pinMode(relay, OUTPUT);

  setupLoadcell();
  sensors.begin();
}

void readUltrasonic() {
  digitalWrite(TRIGPIN, LOW);                   
  delayMicroseconds(2);
  digitalWrite(TRIGPIN, HIGH);                  
  delayMicroseconds(10);
  digitalWrite(TRIGPIN, LOW);                   

  timer = pulseIn(ECHOPIN, HIGH);
  jarak = timer/58;

  Serial.print("Jarak = ");
  Serial.print(jarak);
  Serial.print(" cm");
}

void readSuhu() {
  sensors.requestTemperatures();
  suhu = sensors.getTempCByIndex(0);

  Serial.print("  Suhu: ");
  Serial.print(suhu);
  Serial.print("°C ");
}

void readLoadcell() {
  Serial.print("BERAT: ");
  Serial.print(scale.get_units(), 1);
}

bool readIrsensor() {
  int irSensorValue = digitalRead(irSensorPin);
  return (irSensorValue != HIGH);
}

void loop() {
  readUltrasonic();
  readSuhu();
  readLoadcell();

  if (jarak <= tinggiTabung * persentaseTinggiTabung) {
    Serial.println(" Silakan isi sauce.");
    digitalWrite(relay, HIGH);
    statusRelay = 1;
  } else {
    if (suhu >= suhumin && suhu <= suhumax) {
      if (!readIrsensor() && scale.get_units() < beratKalengkosong) {
        Serial.println(" Silakan letakkan kaleng.");
        digitalWrite(relay, HIGH);
        statusRelay = 1;
      }
      else {
        if (scale.get_units() >= beratKalengkosong && scale.get_units() <= beratKalengpenuh) {
          Serial.println(" Mengisi kaleng.");
          digitalWrite(relay, LOW);
          statusRelay = 0;
        }
        else {
          Serial.println(" Tidak Mengisi Kaleng");
          digitalWrite(relay, HIGH);
          statusRelay = 1;
        }
      }
    } else {
      Serial.println(" Sauce Panas");
      digitalWrite(relay, HIGH);
      statusRelay = 1;
    }

    kirim_data();
  }

  delay(1000);
}