#include "HX711.h"
#include <WiFi.h>
#include <PubSubClient.h>
#include <HTTPClient.h>
#define DOUT_PIN_1  25
#define SCK_PIN_1   26
#define DOUT_PIN_2  27
#define SCK_PIN_2   14
#define DOUT_PIN_3  12
#define SCK_PIN_3   13
#define DOUT_PIN_4  33
#define SCK_PIN_4   32

HX711 scale1;
HX711 scale2;
HX711 scale3;
HX711 scale4;

const char* ssid = "MEGACABLE-2.4G-B7A3";
const char* password = "wvGM4X6B4H";


WiFiClient espClient;
PubSubClient client(espClient);


void setup() {
  Serial.begin(9600);
    WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Conectando a WiFi...");
  }
  Serial.println("Conectado a WiFi");
  
  
  Serial.println("");
  Serial.println("Conexión WiFi establecida");
  Serial.print("Dirección IP: ");
  Serial.println(WiFi.localIP());
  scale1.begin(DOUT_PIN_1, SCK_PIN_1);
  scale2.begin(DOUT_PIN_2, SCK_PIN_2);
  scale3.begin(DOUT_PIN_3, SCK_PIN_3);
  scale4.begin(DOUT_PIN_4, SCK_PIN_4);
  scale1.set_gain(128);
  scale2.set_gain(128);
  scale3.set_gain(128);
  scale4.set_gain(128);
}


void loop() {
   if (WiFi.status() == WL_CONNECTED) {

    long celda1 = send_reading(scale1);
    long celda2 = send_reading(scale2);
    long celda3 = send_reading(scale3);
    long celda4 = send_reading(scale4);

    sendDataServer(celda1,celda2,celda3,celda4);

    reading_sensor(scale1,"Celda 1");
    reading_sensor(scale2,"Celda 2");
    reading_sensor(scale3,"Celda 3");
    reading_sensor(scale4,"Celda 4");
    delay(1000);  // 1 segundo antes de la próxima lectura
  }
 
}

void reading_sensor(HX711 scale, const char* sensorName){
if (scale.is_ready()) {
    long reading = scale.read();
    Serial.print(sensorName);
    Serial.print(" - Weight: ");
    Serial.print(reading*(5.0/2100.0));
    Serial.println(" Kg");
  } else {
    Serial.print(sensorName);
    Serial.println(" - Load cell reading error");
  }
}

long send_reading(HX711 scale) {
  long reading = 0;
  
  if (scale.is_ready()) {
    reading = scale.read();
     reading = reading * (5.0 / 2100.0);
  } else {
    reading = -1;
  }
  return reading;
}

void sendDataServer(long celda1, long celda2, long celda3, long celda4) {
  HTTPClient http;
  String url = "http://tuapkmovil.125mb.com/insert_read_sensors.php?celda1=" + String(celda1)+"&celda2="+ String(celda2)+"&celda3="+ String(celda3)+"&celda4="+ String(celda4);
  http.begin(url);
  int httpCode = http.GET();
  if (httpCode > 0) {
    if (httpCode == HTTP_CODE_OK) {
      Serial.println("Datos enviados correctamente al servidor");
    } else {
      Serial.println("Error en la solicitud HTTP");
    }
  } else {
    Serial.println("Error en la conexión al servidor");
  }
  http.end(); 
}