#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <BlynkSimpleEsp32.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* apiKey = "your_API_key";  // Weather API key
const char* server = "api.weatherapi.com";  // Weather API server
const char* location = "your_location";  // Location for weather data

const int moisturePin = 34;  // Analog pin for soil moisture sensor
const int relayPin = 5;  // Digital pin for relay

char auth[] = "your_Blynk_auth_token";

BLYNK_WRITE(V1) {
  int pinValue = param.asInt();
  if (pinValue == 1) {
    digitalWrite(relayPin, HIGH);
    Serial.println("Manual watering ON");
  } else {
    digitalWrite(relayPin, LOW);
    Serial.println("Manual watering OFF");
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(moisturePin, INPUT);
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW);

  WiFi.begin(ssid, password);
  Blynk.begin(auth, ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("Connected to WiFi");
}

void loop() {
  Blynk.run();
  
  int moistureLevel = analogRead(moisturePin);
  Serial.print("Soil Moisture Level: ");
  Serial.println(moistureLevel);

  if (moistureLevel < 500) {  // Adjust threshold as needed
    digitalWrite(relayPin, HIGH);
    Serial.println("Watering the garden...");
  } else {
    digitalWrite(relayPin, LOW);
    Serial.println("Soil is sufficiently moist.");
  }

  // Get weather data
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = String("http://") + server + "/v1/current.json?key=" + apiKey + "&q=" + location;
    http.begin(url);

    int httpCode = http.GET();
    if (httpCode > 0) {
      String payload = http.getString();
      Serial.println(payload);

      DynamicJsonDocument doc(1024);
      deserializeJson(doc, payload);
      float rain = doc["current"]["precip_mm"];
      Serial.print("Rainfall: ");
      Serial.print(rain);
      Serial.println(" mm");

      if (rain > 0) {
        digitalWrite(relayPin, LOW);
        Serial.println("Rain detected, stopping watering.");
      }
    }
    http.end();
  }

  delay(60000);  // Wait for 1 minute before the next reading
}