#include <WiFi.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";

WiFiServer server(80); // Start server on port 80

void setup() {
  Serial.begin(115200);
  pinMode(2, OUTPUT); // LED on GPIO 2

  // Connect to WiFi
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi connected.");
  Serial.println(WiFi.localIP()); // Print the IP address

  server.begin();
}

void loop() {
  WiFiClient client = server.available(); // Listen for incoming clients

  if (client) {
    Serial.println("New Client.");
    String currentLine = "";
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
        if (c == '\n') {
          if (currentLine.length() == 0) {
            // HTTP header always starts with a response code
            client.println("HTTP/1.1 200 OK");
            client.println("Content-type:text/html");
            client.println();
            // Display the web page
            client.print("Click <a href=\"/H\">here</a> to turn LED ON.<br>");
            client.print("Click <a href=\"/L\">here</a> to turn LED OFF.<br>");
            client.println();
            break;
          } else { currentLine = ""; }
        } else if (c != '\r') { currentLine += c; }

        // Check the client request
        if (currentLine.endsWith("GET /H")) { digitalWrite(2, HIGH); }
        if (currentLine.endsWith("GET /L")) { digitalWrite(2, LOW); }
      }
    }
    client.stop();
    Serial.println("Client Disconnected.");
  }
}