#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>

const char* ssid = "arduino";
const char* password = "11111111";

ESP8266WebServer server(80);

const int ledPin = 5; // GPIO5 (D1)

void handleRoot() {
  server.send(200, "text/html", "<h1>LED is OFF</h1><button onclick=\"location.href='/ledOn'\">LED ON</button>");
}

void handleLEDOn() {
  digitalWrite(ledPin, HIGH);
  server.send(200, "text/html", "<h1>LED is ON</h1><button onclick=\"location.href='/ledOff'\">Turn OFF</button>");
}

void handleLEDOff() {
  digitalWrite(ledPin, LOW);
  server.send(200, "text/html", "<h1>LED is OFF</h1><button onclick=\"location.href='/ledOn'\">Turn ON</button>");
}

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);

  WiFi.begin(ssid, password);
  Serial.println("Connecting to WiFi...");

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }

  Serial.println();
  Serial.print("Connected to WiFi. IP address: ");
  Serial.println(WiFi.localIP());

  server.on("/", handleRoot);
  server.on("/ledOn", handleLEDOn);
  server.on("/ledOff", handleLEDOff);

  server.begin();
  Serial.println("HTTP server started");
}

void loop() {
  server.handleClient();
}