#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6gipLqUDK"
#define BLYNK_TEMPLATE_NAME "DHT22 Monitoring 2 LED"
#define BLYNK_AUTH_TOKEN "89m3suMDGumOFozUnGJRalMoaXSayRq8"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>
#include <HTTPClient.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>
#include <SPI.h>

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

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

#define LED_BLYNK 2
#define LED_TS 4

String apiKey = "IACX7IM6UCHG0KQC";
const char* server = "http://api.thingspeak.com/update";

#define TFT_CS   5
#define TFT_RST  4
#define TFT_DC   16

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

BlynkTimer timer;

String statusBlynk = "Waiting";
String statusTS = "Waiting";
float lastTemp = 0;
float lastHum = 0;


void kirimBlynk() {

  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)) {
    Serial.println("❌ Gagal membaca DHT");
    statusBlynk = "Sensor Error";
    return;
  }

  lastTemp = t;
  lastHum = h;

  if (Blynk.connected()) {

    Blynk.virtualWrite(V0, t);
    Blynk.virtualWrite(V1, h);

    digitalWrite(LED_BLYNK, HIGH);
    timer.setTimeout(200L, [](){ digitalWrite(LED_BLYNK, LOW); });

    statusBlynk = "SUCCESS";
    Serial.println("✅ Blynk SUCCESS");

  } else {
    statusBlynk = "FAILED";
    Serial.println("⚠ Blynk Disconnected");
  }
}


void kirimThingSpeak() {

  if (WiFi.status() != WL_CONNECTED) {
    statusTS = "No WiFi";
    return;
  }

  HTTPClient http;

  String url = server;
  url += "?api_key=" + apiKey;
  url += "&field1=" + String(lastTemp);
  url += "&field2=" + String(lastHum);

  http.begin(url);
  int response = http.GET();

  Serial.print("ThingSpeak Response: ");
  Serial.println(response);

  if (response > 0) {

    digitalWrite(LED_TS, HIGH);
    timer.setTimeout(200L, [](){ digitalWrite(LED_TS, LOW); });

    statusTS = "SUCCESS";

  } else {
    statusTS = "FAILED";
  }

  http.end();
}


void updateTFT() {

  tft.fillScreen(ST77XX_BLACK);
  tft.setCursor(0,0);
  tft.setTextColor(ST77XX_WHITE);
  tft.setTextSize(1);

  tft.println("=== MONITORING ===");
  tft.print("Temp: ");
  tft.println(lastTemp);

  tft.print("Hum : ");
  tft.println(lastHum);

  tft.println("-----------------");

  tft.print("WiFi: ");
  tft.println(WiFi.status()==WL_CONNECTED ? "OK" : "NO");

  tft.print("Blynk: ");
  tft.println(statusBlynk);

  tft.print("TS: ");
  tft.println(statusTS);
}


void setup() {

  Serial.begin(115200);

  pinMode(LED_BLYNK, OUTPUT);
  pinMode(LED_TS, OUTPUT);

  digitalWrite(LED_BLYNK, LOW);
  digitalWrite(LED_TS, LOW);

  dht.begin();

  tft.initR(INITR_BLACKTAB);
  tft.fillScreen(ST77XX_BLACK);

  Blynk.begin(auth, ssid, pass);

  // Timer berbeda
  timer.setInterval(2000L, kirimBlynk);      
  timer.setInterval(15000L, kirimThingSpeak); 
  timer.setInterval(1000L, updateTFT);      
}


void loop() {
  Blynk.run();
  timer.run();
}