#include  "HX711.h"
#include  <WiFi.h>
#include  <Wire.h>
#include  <ThingSpeak.h>
#include  <Adafruit_NeoPixel.h>

#define LED_PIN 23
#define NUM_LEDS 32

#define ld_sck 2
#define ld_cell 4

HX711 scale;

const char ssid[] = "Wokwi-GUEST";
const char pass[] = "";

const char *server = "api.thingspeak.com";
unsigned long myChannelNumber = 2591797;
const char *myWriteAPIKey = "7KODAYDS0B1J7DM5";

float percentage_final=0;

Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);

void fillStripWithPercentage(int percentage, uint8_t red, uint8_t green, uint8_t blue) 
{
  // Calculate the number of LEDs to light up based on the percentage
  int numLedsToLight = (NUM_LEDS * percentage) / 100;

  // Light up the calculated number of LEDs with the given color
  for (int i = 0; i < NUM_LEDS; i++) {
    if (i < numLedsToLight) {
      strip.setPixelColor(i, strip.Color(red, green, blue));
    } else {
      strip.setPixelColor(i, 0); // Turn off the remaining LEDs
    }
  }

  // Update the strip to show the changes
  strip.show();
}

WiFiClient client;

void wificonnect()
{
  Serial.printf("Connecting to %s ", ssid);
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED) 
  {
    delay(500);
    Serial.print(".");
  }
  Serial.println(" CONNECTED");

}

void setup() 
{
  Serial.begin(115200);
  Serial.println("HI");
  strip.begin();
  strip.show();
  


  wificonnect();

  // Initialize ThingSpeak
  ThingSpeak.begin(client);

  scale.begin(ld_cell,ld_sck);
  scale.set_scale();
  scale.tare();

}

void loop() 

{
  if (scale.is_ready())
  {
    float load = scale.get_units(1);  // Get weight reading from the scale
    Serial.print("weight:");         // Calculate weight in kilograms from the sensor reading
    float final_load = (load/42)/10;
    Serial.print(final_load);     // Convert the sensor reading to kilograms
    Serial.println("kg");
    percentage_final= (final_load*20);

    ThingSpeak.setField(1, final_load);
    ThingSpeak.setField(2, percentage_final);

    int status = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

    if (status == 200) 
    {
      Serial.println("Data sent to ThingSpeak successfully!");
      digitalWrite(8, HIGH);
      delay(2000);
      digitalWrite(8, LOW);
    } 
    
    else
     {
      Serial.println("Error sending data to ThingSpeak");
      digitalWrite(10, HIGH);
      delay(2000);
      digitalWrite(10, LOW);
     }
    delay(4000);

    fillStripWithPercentage(percentage_final, 255, 0, 0);

  }
  
}