#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include "DHT.h"

// Konfigurasi DHT22
#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Konfigurasi LCD I2C
LiquidCrystal_I2C lcd(0x27, 16, 2);

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

// Server HTTP
WiFiServer server(80);

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

  // Memulai LCD
  lcd.init();
  lcd.backlight();
  lcd.print("Init...");

  // Memulai DHT22
  dht.begin();

  // Koneksi WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("\nWiFi Connected!");
  Serial.println(WiFi.localIP()); // IP ESP32

  lcd.clear();
  lcd.print("WiFi Ready");

  // Memulai server
  server.begin();
}

void loop() {
  // Membaca data sensor
  float t = dht.readTemperature();
  float h = dht.readHumidity();

  // Cek apakah pembacaan sensor berhasil
  if (isnan(t) || isnan(h)) {
    Serial.println("Failed to read from DHT sensor!");
    lcd.setCursor(0, 0);
    lcd.print("Sensor Error!");
  } else {
    // Menampilkan suhu dan kelembaban ke LCD
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(t);
    lcd.print(" C");

    lcd.setCursor(0, 1);
    lcd.print("Hum: ");
    lcd.print(h);
    lcd.print(" %");
  }

  // Menangani koneksi klien
  WiFiClient client = server.available();
  if (client) {
    Serial.println("Client Connected");
    String request = client.readStringUntil('\r');
    client.flush();

    // Periksa endpoint
    if (request.indexOf("GET /data") != -1) {
      String jsonData = "{\"temperature\": " + String(t) + ", \"humidity\": " + String(h) + "}";
      client.print("HTTP/1.1 200 OK\r\nContent-Type: application/json\r\n\r\n");
      client.print(jsonData);
      Serial.println("Data Sent: " + jsonData);
    }
    client.stop();
    Serial.println("Client Disconnected");
  }

  delay(2000); // Interval pembacaan
}