#include <WiFi.h>
#include <HTTPClient.h>


// Wi-Fi credentials
const char* ssid = "Mathurs_4G";        // Your Wi-Fi network SSID
const char* password = "Vijay@302020"; // Your Wi-Fi network password

// API endpoint URL
const char* apiUrl = "https://httpbin.org/post"; // For testing POST requests

void setup() {
  // Start Serial Monitor for debugging and reading barcode data
  Serial.begin(115200);
  
  // Wait for the Serial Monitor to initialize
  while (!Serial) {}

  // Connect to Wi-Fi
  WiFi.begin("Wokwi-GUEST", "", 6);
  Serial.println("Connecting 2 WiFi...");
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("WiFi Connected!");
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  if (Serial.available() > 0) {
    String barcode = "";
    while (Serial.available()) {
      barcode += (char)Serial.read();  // Read the data from Serial Monitor
    }

    // Print the barcode data to the Serial Monitor
    Serial.println("Scanned Barcode: " + barcode);

    // Send the barcode data to an API
    sendBarcodeToAPI(barcode);
  }

  delay(1000);
}

void sendBarcodeToAPI(String barcode) {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin(apiUrl);  // Start the HTTP request to the API
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");

    // Prepare the data to send (barcode)
    String payload = "barcode=" + barcode;

    // Send POST request
    int httpResponseCode = http.POST(payload);

    // Check the response from the API
    if (httpResponseCode > 0) {
      Serial.println("HTTP Response Code: " + String(httpResponseCode));
      String response = http.getString();
      Serial.println("Response: " + response);
    } else {
      Serial.println("Error in HTTP request");
    }

    // Close the HTTP connection
    http.end();
  } else {
    Serial.println("WiFi not connected");
  }
}