#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <DHT.h>
#include <Servo.h>

// Ganti dengan data WiFi kamu
const char* ssid = "NAMA_WIFI";
const char* password = "PASSWORD_WIFI";

// URL server dummy (ganti sesuai backend kamu)
const char* serverUrl = "http://yourserver.com/api/sensordata";

// Pin sensor dan aktuator
#define DHTPIN 15
#define DHTTYPE DHT22
#define LDRPIN 34
#define SOILPIN 35
#define TRIGPIN 12
#define ECHOPIN 14
#define RELAYPIN 5
#define LEDGREEN 2
#define LEDRED 4
#define SERVOPIN 13

DHT dht(DHTPIN, DHTTYPE);
Servo servo;

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

  // Setup pin mode
  pinMode(LDRPIN, INPUT);
  pinMode(SOILPIN, INPUT);
  pinMode(TRIGPIN, OUTPUT);
  pinMode(ECHOPIN, INPUT);
  pinMode(RELAYPIN, OUTPUT);
  pinMode(LEDGREEN, OUTPUT);
  pinMode(LEDRED, OUTPUT);

  servo.attach(SERVOPIN);

  dht.begin();

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

long readUltrasonicCM() {
  digitalWrite(TRIGPIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGPIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGPIN, LOW);

  long duration = pulseIn(ECHOPIN, HIGH);
  long cm = duration / 29 / 2;
  return cm;
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  int ldrValue = analogRead(LDRPIN);
  int soilMoisture = analogRead(SOILPIN);
  long waterLevelCM = readUltrasonicCM();

  Serial.printf("Temp: %.2f C, Humidity: %.2f %%\n", temperature, humidity);
  Serial.printf("LDR: %d, Soil: %d, Water Level: %ld cm\n", ldrValue, soilMoisture, waterLevelCM);

  // Threshold contoh: jika soilMoisture < 1500 dianggap kering (sesuaikan)
  if(soilMoisture < 1500){
    digitalWrite(RELAYPIN, HIGH);  // nyalakan pompa
    digitalWrite(LEDGREEN, HIGH);
    digitalWrite(LEDRED, LOW);
    servo.write(90);  // buka tutup
  } else {
    digitalWrite(RELAYPIN, LOW);   // matikan pompa
    digitalWrite(LEDGREEN, LOW);
    digitalWrite(LEDRED, HIGH);
    servo.write(0);   // tutup
  }

  // Kirim data ke server via HTTP POST (JSON)
  if(WiFi.status() == WL_CONNECTED){
    HTTPClient http;
    http.begin(serverUrl);
    http.addHeader("Content-Type", "application/json");

    StaticJsonDocument<256> doc;
    doc["temperature"] = temperature;
    doc["humidity"] = humidity;
    doc["ldr"] = ldrValue;
    doc["soilMoisture"] = soilMoisture;
    doc["waterLevelCM"] = waterLevelCM;

    String jsonData;
    serializeJson(doc, jsonData);

    int httpResponseCode = http.POST(jsonData);

    if(httpResponseCode > 0){
      Serial.printf("HTTP Response code: %d\n", httpResponseCode);
    } else {
      Serial.printf("HTTP POST failed, error: %s\n", http.errorToString(httpResponseCode).c_str());
    }
    http.end();
  }

  delay(5000);  // delay 5 detik sebelum baca ulang
}