package client

import "testing"

func TestParseDShowVideoDevices(t *testing.T) {
	sample := `[dshow @ 000001] DirectShow video devices (some may be both video and audio devices)
[dshow @ 000001]   "Integrated Camera"
[dshow @ 000001]     Alternative name "@device_pnp_\\?\usb#..."
[dshow @ 000001]   "USB Video Device"
[dshow @ 000001] DirectShow audio devices
[dshow @ 000001]   "Microphone (USB Video Device)"
`
	devs := parseDShowVideoDevices(sample)
	if len(devs) != 2 {
		t.Fatalf("got %d devices: %v", len(devs), devs)
	}
	if devs[0] != "Integrated Camera" || devs[1] != "USB Video Device" {
		t.Fatalf("unexpected names: %v", devs)
	}
}

func TestExtractQuotedDeviceName(t *testing.T) {
	if got := extractQuotedDeviceName(`[dshow]   "My Cam"`); got != "My Cam" {
		t.Fatalf("got %q", got)
	}
	if got := extractQuotedDeviceName("no quotes"); got != "" {
		t.Fatalf("expected empty, got %q", got)
	}
}

func TestEncodeCameraSnapshotJPEG(t *testing.T) {
	jpeg := []byte{0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 'J', 'F', 'I', 'F'}
	// pad to >= 100 bytes
	for len(jpeg) < 100 {
		jpeg = append(jpeg, 0)
	}
	b64, err := encodeCameraSnapshotJPEG(jpeg)
	if err != nil || len(b64) < 100 {
		t.Fatalf("encode: err=%v len=%d", err, len(b64))
	}
	_, err = encodeCameraSnapshotJPEG([]byte{1, 2, 3})
	if err == nil {
		t.Fatal("expected error for non-jpeg")
	}
}