feat(go): Port full Ananta private server to Go architecture

internal/web/debug.go

@@ -0,0 +1,106 @@
+package web
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+
+	"ananta-ps/internal/config"
+	"ananta-ps/internal/gameserver"
+)
+
+type DebugServer struct {
+	cfg        *config.Config
+	gameServer *gameserver.Server
+	httpSrv    *http.Server
+	cancelFunc context.CancelFunc
+}
+
+func NewDebug(cfg *config.Config, gameServer *gameserver.Server) *DebugServer {
+	return &DebugServer{
+		cfg:        cfg,
+		gameServer: gameServer,
+	}
+}
+
+func (d *DebugServer) Start() error {
+	ctx, cancel := context.WithCancel(context.Background())
+	d.cancelFunc = cancel
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", d.handleIndex)
+	mux.HandleFunc("/api/status", d.handleStatus)
+
+	addr := fmt.Sprintf("%s:%d", d.cfg.Network.BindHost, 5809)
+	d.httpSrv = &http.Server{
+		Addr:    addr,
+		Handler: mux,
+	}
+
+	go func() {
+		log.Printf("[DEBUG-API] Debug WebUI panel at http://%s:5809/", d.cfg.Network.AdvertisedHost)
+		if err := d.httpSrv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Printf("[DEBUG-API] Debug server error: %v", err)
+		}
+	}()
+
+	_ = ctx
+	return nil
+}
+
+func (d *DebugServer) Stop() error {
+	if d.cancelFunc != nil {
+		d.cancelFunc()
+	}
+	if d.httpSrv != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		defer cancel()
+		_ = d.httpSrv.Shutdown(ctx)
+	}
+	return nil
+}
+
+func (d *DebugServer) handleIndex(w http.ResponseWriter, r *http.Request) {
+	html := `<!doctype html>
+<html>
+<head><meta charset="utf-8"><title>Ananta Debug WebUI</title></head>
+<body style="background:#111; color:#eee; font-family:monospace; padding:20px;">
+  <h2>Ananta Private Server Debug Monitor (Port 5809)</h2>
+  <div id="status">Connecting to runtime...</div>
+  <pre id="info" style="margin-top:20px; background:#222; padding:15px; border-radius:5px;"></pre>
+  <script>
+    async function refresh() {
+      try {
+        const res = await fetch("/api/status");
+        const data = await res.json();
+        document.getElementById("status").innerHTML = "Status: <b>ONLINE</b> | Active Sessions: " + data.activeSessions;
+        document.getElementById("info").innerText = JSON.stringify(data, null, 2);
+      } catch (e) {
+        document.getElementById("status").innerText = "Offline: " + e;
+      }
+    }
+    setInterval(refresh, 2000);
+    refresh();
+  </script>
+</body>
+</html>`
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Write([]byte(html))
+}
+
+func (d *DebugServer) handleStatus(w http.ResponseWriter, r *http.Request) {
+	sessions := d.gameServer.GetActiveSessions()
+	data := map[string]interface{}{
+		"online":         true,
+		"version":        d.cfg.Client.Version,
+		"activeSessions": len(sessions),
+		"advertisedHost": d.cfg.Network.AdvertisedHost,
+		"gamePort":       d.cfg.Network.GamePort,
+		"loginPorts":     d.cfg.Network.LoginPorts,
+	}
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(data)
+}