#define BLYNK_TEMPLATE_ID "TMPL6dE3WR_Zb"
#define BLYNK_TEMPLATE_NAME "Quickstart Template"
#define BLYNK_AUTH_TOKEN "EsrRzcYTKsN_2JG823c04eedpuuxp-Za"

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define LDR_PIN 34
#define RELAY_PIN 12

char ssid[] = "Wokwi-GUEST"; // ใส่ชื่อ WiFi ที่คุณใช้
char pass[] = "";            // ใส่รหัสผ่าน WiFi ถ้ามี

BlynkTimer timer;

bool manualControl = false;
int lampState = 0;
int lightLevel = 0;
int threshold = 500;

// Virtual Pins
#define VPIN_MANUAL_SWITCH V0
#define VPIN_LAMP_STATE V1
#define VPIN_LIGHT_LEVEL V2
#define VPIN_AUTO_MODE V3
#define VPIN_THRESHOLD V4

void setup() {
  Serial.begin(115200);
  pinMode(LDR_PIN, INPUT);
  pinMode(RELAY_PIN, OUTPUT);

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  timer.setInterval(1000L, sendSensorData); // ส่งข้อมูลทุกวินาที
  Serial.println("Automatic Street Light System with Blynk");
}

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

  if (!manualControl) {
    lightLevel = analogRead(LDR_PIN);

    if (lightLevel < threshold) {
      lampState = 1;
      digitalWrite(RELAY_PIN, HIGH);
      Serial.println("It's dark! Turning on the light...");
    } else {
      lampState = 0;
      digitalWrite(RELAY_PIN, LOW);
      Serial.println("It's bright! Turning off the light...");
    }

    Serial.print("Light Level: ");
    Serial.println(lightLevel);
  }
}

// ฟังก์ชันส่งค่าความสว่างและสถานะหลอดไฟไปยัง Blynk
void sendSensorData() {
  lightLevel = analogRead(LDR_PIN);
  Blynk.virtualWrite(VPIN_LIGHT_LEVEL, lightLevel);
  Blynk.virtualWrite(VPIN_LAMP_STATE, lampState);
}

// ปุ่มเปิด/ปิดไฟแมนนวล (V0)
BLYNK_WRITE(VPIN_MANUAL_SWITCH) {
  if (manualControl) {
    lampState = param.asInt();
    digitalWrite(RELAY_PIN, lampState ? HIGH : LOW);
  }
}

// ปุ่มสลับโหมด Auto/Manual (V3)
BLYNK_WRITE(VPIN_AUTO_MODE) {
  manualControl = !param.asInt(); // 1 = Auto (false), 0 = Manual (true)
}

// ปรับค่า threshold (V4)
BLYNK_WRITE(VPIN_THRESHOLD) {
  threshold = param.asInt();
}