package sessionmgr

import (
	"testing"

	"vpn-platform/backend/internal/model"
	"vpn-platform/backend/internal/store"
)

func TestDisconnectLoggedOnceWhenTunnelHasNoClients(t *testing.T) {
	previous := store.DB
	t.Cleanup(func() {
		if store.DB != nil {
			if db, err := store.DB.DB(); err == nil {
				_ = db.Close()
			}
		}
		store.DB = previous
	})
	if err := store.Init(t.TempDir()); err != nil {
		t.Fatal(err)
	}
	tunnel := model.Tunnel{Name: "audit-test", Protocol: "openvpn"}
	if err := store.DB.Create(&tunnel).Error; err != nil {
		t.Fatal(err)
	}
	client := ClientInfo{Username: "tenant:ou_123", RealAddress: "203.0.113.1:1234", RxBytes: 42, TxBytes: 84}
	SyncSessions(tunnel.ID, "openvpn", []ClientInfo{client})
	SyncSessions(tunnel.ID, "openvpn", nil)
	SyncSessions(tunnel.ID, "openvpn", nil)
	var logs []model.ConnectionLog
	if err := store.DB.Where("tunnel_id = ?", tunnel.ID).Order("id").Find(&logs).Error; err != nil {
		t.Fatal(err)
	}
	if len(logs) != 2 || logs[0].Event != "connect" || logs[1].Event != "disconnect" || logs[1].Username != client.Username {
		t.Fatalf("expected one connect and one disconnect with stable subject, got %+v", logs)
	}
}