// library wifi
#include  "WiFi.h" 
// buat object wifi-client
WiFiClient client;
// library sensor dhtesp
#include "DHTesp.h"

// Pin inisialisasi di modul ESP32
const int DHT_PIN = 15;
const int PH_PIN = 13;
const int SOIL_PIN = 12;
const int WATER_PIN = 4;
const int FERTILIZER_PIN = 5;

// buat object sensor
DHTesp dhtSensor;;

// inisialisasi variable untuk terhubung dengan thingspeak
String thingSpeakAddress = "api.thingspeak.com";
String writeAPIKey;
String tsfield1Name;
String request_string;

// fungsi setup koneksi ke wifi
void setup()
{
  // koneksi wifi 
  Serial.begin(9600);
  WiFi.disconnect();
  WiFi.begin("Wokwi-GUEST", "");
  while ((!(WiFi.status() == WL_CONNECTED))) {
    delay(300);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
 
  pinMode(WATER_PIN,OUTPUT);
  pinMode(FERTILIZER_PIN,OUTPUT);
}


void loop()
{
  // Baca Data per 500 ms
  delay(500);
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  float t = data.temperature;
  float h = data.humidity;
  float p = analogRead(PH_PIN);
  float s = analogRead(SOIL_PIN);
  kirim_thingspeak(t, h, p, s);

  if (isnan(h) || isnan(t) || isnan(p) || isnan(s)) {
    Serial.println("Failed to read from All sensor!");
    return;
  }

  // Logic untuk aktivasi Motor Pompa Air dan Pupuk
  if (p > 100) { 
    digitalWrite(WATER_PIN, HIGH); 
  }
  else {
    digitalWrite(WATER_PIN, LOW); 
  }
  if (s > 150) { 
    digitalWrite(FERTILIZER_PIN, HIGH); 
  }
  else {
    digitalWrite(FERTILIZER_PIN, LOW); 
  }
  delay(100);
}

// Kirim Data ke Cloud
void kirim_thingspeak(float suhu, float hum, float Ph, float Soil) {
  if (client.connect("api.thingspeak.com", 80)) {
    request_string = "/update?";
    request_string += "key=";
    request_string += "AB1280JS2XTMDCOA";
    request_string += "&";
    request_string += "field1";
    request_string += "=";
    request_string += suhu;
    request_string += "&";
    request_string += "field2";
    request_string += "=";
    request_string += hum;
    request_string += "&";
    request_string += "field3";
    request_string += "=";
    request_string += Ph;
    request_string += "&";
    request_string += "field4";
    request_string += "=";
    request_string += Soil;


    Serial.println(String("GET ") + request_string + " HTTP/1.1\r\n" +
                 "Host: " + thingSpeakAddress + "\r\n" +
                 "Connection: close\r\n\r\n");
                 
    client.print(String("GET ") + request_string + " HTTP/1.1\r\n" +
                 "Host: " + thingSpeakAddress + "\r\n" +
                 "Connection: close\r\n\r\n");
    unsigned long timeout = millis();
    while (client.available() == 0) {
      if (millis() - timeout > 5000) {
        Serial.println(">>> Client Timeout !");
        client.stop();
        return;
      }
    }

    while (client.available()) {
      String line = client.readStringUntil('\r');
      Serial.print(line);
    }

    Serial.println();
    Serial.println("closing connection");

  }
}