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

// Replace with your network credentials
const char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASSWORD";

// Replace with your IoT platform endpoint
const char* serverName = "http://example.com/api/data"; // Example: ThingSpeak URL

// GPIO pin for soil moisture sensor
const int soilMoisturePin = 34; // Adjust based on your wiring

// Dummy function to simulate nutrient level
int readNutrientLevel() {
  // Replace this with actual sensor reading code
  return random(0, 100); // Returns a random value between 0 and 100
}

void setup() {
  Serial.begin(115200);

  // Initialize WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to WiFi");
}

void loop() {
  // Read soil moisture sensor
  int soilMoistureValue = analogRead(soilMoisturePin);

  // Read nutrient level (simulated here)
  int nutrientLevel = readNutrientLevel();

  // Prepare data for sending
  String postData = "soilMoisture=" + String(soilMoistureValue) + "&nutrientLevel=" + String(nutrientLevel);

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin(serverName);
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");

    int httpResponseCode = http.POST(postData);

    if (httpResponseCode > 0) {
      String response = http.getString();
      Serial.println("HTTP Response code: " + String(httpResponseCode));
      Serial.println("Response: " + response);
    } else {
      Serial.println("Error code: " + String(httpResponseCode));
    }

    http.end();
  } else {
    Serial.println("Error in WiFi connection");
  }

  // Delay before the next reading
  delay(60000); // Send data every 60 seconds
}