#include "WiFi.h"

const char* ssid     = "Wokwi-GUEST"; // SSID target
const char* password = "";            // Password jika ada

const int ledPin = 15;
const int buttonPin = 13;
bool scanned = false;

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
  digitalWrite(ledPin, LOW);
  WiFi.mode(WIFI_STA); // Hanya sebagai client
}

void loop() {
  int buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH && !scanned) {
    Serial.println("Scanning for WiFi networks...");
    int n = WiFi.scanNetworks();
    Serial.println("Scan done.");

    bool found = false;
    for (int i = 0; i < n; i++) {
      String foundSSID = WiFi.SSID(i);
      Serial.printf("Found: %s (%d dBm)\n", foundSSID.c_str(), WiFi.RSSI(i));
      if (foundSSID == ssid) {
        found = true;
        break;
      }
    }

    if (found) {
      Serial.printf("Connecting to %s...\n", ssid);
      WiFi.begin(ssid, password);
      int tries = 0;
      while (WiFi.status() != WL_CONNECTED && tries < 20) {
        delay(500);
        Serial.print(".");
        tries++;
      }
      if (WiFi.status() == WL_CONNECTED) {
        Serial.println("\nConnected!");
        Serial.print("IP address: ");
        Serial.println(WiFi.localIP());
        digitalWrite(ledPin, HIGH);
      } else {
        Serial.println("\nFailed to connect.");
        digitalWrite(ledPin, LOW);
      }
    } else {
      Serial.println("Target SSID not found.");
      digitalWrite(ledPin, LOW);
    }

    scanned = true;
  }

  if (buttonState == LOW) {
    scanned = false;
  }

  delay(100);
}