// This file is intentionally named test.go (not test_test.go) so the exported
// StartTestServer helper is visible to the ssh/proxy and ssh/client external
// test packages, not just this package's own tests. The //go:build !js tag
// keeps its "testing" import — and the whole testing/flag/regexp transitive
// chain it drags in — out of the wasm client, which links ssh/server through
// the engine but never runs Go tests under GOOS=js.
//go:build !js

package server

import (
	"context"
	"fmt"
	"net/netip"
	"testing"
	"time"
)

// StartTestServer starts the SSH server and returns the address it's listening on.
func StartTestServer(t *testing.T, server *Server) string {
	started := make(chan string, 1)
	errChan := make(chan error, 1)

	go func() {
		addrPort := netip.MustParseAddrPort("127.0.0.1:0")
		if err := server.Start(context.Background(), addrPort); err != nil {
			errChan <- err
			return
		}

		actualAddr := server.Addr()
		if actualAddr == nil {
			errChan <- fmt.Errorf("server started but no listener address available")
			return
		}

		started <- actualAddr.String()
	}()

	select {
	case actualAddr := <-started:
		return actualAddr
	case err := <-errChan:
		t.Fatalf("Server failed to start: %v", err)
	case <-time.After(5 * time.Second):
		t.Fatal("Server start timeout")
	}
	return ""
}