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


// Pin assignments
const int moistureSensorPin = 34; // Analog pin for soil moisture sensor
const int greenLEDPin = 25;        // Digital pin for the green LED indicating watering
const int redLEDPin = 26;          // Digital pin for the red LED indicating no watering
const int waterPumpPin = 2;        // Digital pin for the relay controlling the water pump

// Sensor reading storage
int moistureLevel = 0;             // To store moisture level from the sensor

// WiFi settings
const char* ssid = "Wokwi-GUEST";
const char* password = "";

void setup() {
  Serial.begin(9600);              // Start serial communication at 9600 baud rate
  pinMode(moistureSensorPin, INPUT); // Configure sensor pin as input
  pinMode(greenLEDPin, OUTPUT);    // Configure green LED pin as output
  pinMode(redLEDPin, OUTPUT);      // Configure red LED pin as output
  pinMode(waterPumpPin, OUTPUT);   // Configure relay pin as output
  
  setup_wifi(); // Connect to WiFi
}

void setup_wifi() {
  delay(10);
  Serial.println("Connecting to WiFi...");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
}


void sendWebhookRequest(String data) {
  HTTPClient http;
  http.begin("https://webhookwizard.com/api/webhook/in?key=sk_4738b49d-a08e-433e-bb52-c5673372dd60");
  http.addHeader("Content-Type", "application/json");

  // Add your data to the request body
  String requestBody = "{\"data\": \"" + data + "\"}";
  
  // Send the POST request
  int httpResponseCode = http.POST(requestBody);

 // Free resources
  http.end();
}


void loop() {
  // Read moisture from sensor
  moistureLevel = analogRead(moistureSensorPin);

  // Watering logic based on moisture threshold
  if (moistureLevel < 2000) {
    // Low moisture: Activate water pump and green LED, turn off red LED
    digitalWrite(redLEDPin, LOW);
    digitalWrite(waterPumpPin, HIGH);
    digitalWrite(greenLEDPin, HIGH);
  } else {
    // Adequate moisture: Deactivate water pump and green LED, turn on red LED
    digitalWrite(greenLEDPin, LOW);
    digitalWrite(waterPumpPin, LOW);
    digitalWrite(redLEDPin, HIGH);
  }

  // Debugging output
  Serial.print("Soil Moisture: ");
  Serial.println(moistureLevel);   // Display moisture level
  String level = String(moistureLevel);
  // Call the webhook function with the moisture level
  sendWebhookRequest(level);

  delay(1000); // Wait for 1 second
}