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

const char* ssid = "your_ssid"; // Use const char* for string literals
const char* password = "your_password";

const int LED_PIN = 2;
const int BUTTON_PIN = 5;

ESP8266WebServer server(80);

void setup() {
    pinMode(LED_PIN, OUTPUT);
    pinMode(BUTTON_PIN, INPUT);

    Serial.begin(115200); // Initialize serial communication for debugging

    WiFi.begin(ssid, password);
    Serial.print("Connecting to WiFi...");
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println(" connected");
    Serial.print("IP address: ");
    Serial.println(WiFi.localIP());

    server.on("/gpio/1", HTTP_GET, handleLEDOn); // Use function pointers for handlers
    server.on("/gpio/0", HTTP_GET, handleLEDOff);
    server.on("/gpio/toggle", HTTP_GET, handleToggleLED);
    server.on("/gpio/status", HTTP_GET, handleLEDStatus);

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

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

void handleLEDOn() {
    digitalWrite(LED_PIN, HIGH);
    server.send(200, "text/plain", "1");
}

void handleLEDOff() {
    digitalWrite(LED_PIN, LOW);
    server.send(200, "text/plain", "0");
}

void handleToggleLED() {
    int newLEDState = !digitalRead(LED_PIN);
    digitalWrite(LED_PIN, newLEDState);
    server.send(200, "text/plain", String(newLEDState).c_str());
}

void handleLEDStatus() {
    int ledState = digitalRead(LED_PIN);
    server.send(200, "text/plain", String(ledState).c_str());
}