// RegEx matches only numeric values
var numericPlaceholderRe = regexp.MustCompile(`\$\d+\$`)

func isNumeric(k reflect.Kind) bool {
	switch k {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return true
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		return true
	case reflect.Float32, reflect.Float64:
		return true
	default:
		return false
	}
}

// Custom "wait group with timeout" for waiting for fakeServer calls in a goroutine to finish
type WaitGroup struct {
	count int32
	done  chan struct{}
}

func NewWaitGroup() *WaitGroup {
	return &WaitGroup{
		done: make(chan struct{}),
	}
}

func NewWaitForNCalls(t *testing.T, n int32) (*WaitGroup, func()) {
	wg := &WaitGroup{
		done: make(chan struct{}),
	}

	wg.Add(n)
	return wg, func() {

	return &fakeFileFakeFds{File: f, fd: 0}
}

type fakeIptablesDeps struct {
	AddRouteErr           error
	AddInpodMarkIPRuleCnt atomic.Int32
	DelInpodMarkIPRuleCnt atomic.Int32
	AddLoopbackRoutesCnt  atomic.Int32
	DelLoopbackRoutesCnt  atomic.Int32
}

var _ iptables.NetlinkDependencies = &fakeIptablesDeps{}

func (r *fakeIptablesDeps) AddInpodMarkIPRule(cfg *iptables.Config) error {

		return false
	}
	if e.Cluster != "" && !strings.EqualFold(cluster, e.Cluster) {
		return false
	}
	status := retrieveEndpointStatus(host)
	if e.Status != "" && !strings.EqualFold(core.HealthStatus_name[int32(status)], e.Status) {
		return false
	}
	return true
}

// PrintEndpointsSummary prints just the endpoints config summary to the ConfigWriter stdout

type Eq struct {
	Column interface{}
	Value  interface{}
}

func (eq Eq) Build(builder Builder) {
	builder.WriteQuoted(eq.Column)

	switch eq.Value.(type) {
	case []string, []int, []int32, []int64, []uint, []uint32, []uint64, []interface{}:
		rv := reflect.ValueOf(eq.Value)
		if rv.Len() == 0 {
			builder.WriteString(" IN (NULL)")
		} else {
			builder.WriteString(" IN (")

// Range: -128 through 127.
type int8 int8

// int16 is the set of all signed 16-bit integers.
// Range: -32768 through 32767.
type int16 int16

// int32 is the set of all signed 32-bit integers.
// Range: -2147483648 through 2147483647.
type int32 int32

// int64 is the set of all signed 64-bit integers.
// Range: -9223372036854775808 through 9223372036854775807.
type int64 int64

	case string:
		return v
	case int:
		return strconv.FormatInt(int64(v), 10)
	case int8:
		return strconv.FormatInt(int64(v), 10)
	case int16:
		return strconv.FormatInt(int64(v), 10)
	case int32:
		return strconv.FormatInt(int64(v), 10)
	case int64:
		return strconv.FormatInt(v, 10)
	case uint:
		return strconv.FormatUint(uint64(v), 10)
	case uint8:
		return strconv.FormatUint(uint64(v), 10)

	rv := reflect.ValueOf(fieldValue)
	switch v := fieldValue.(type) {
	case int64, int, uint, uint64, int32, uint32, int16, uint16:
		result = time.Unix(reflect.Indirect(rv).Int(), 0).UTC()
	case *int64, *int, *uint, *uint64, *int32, *uint32, *int16, *uint16:
		if rv.IsZero() {
			return nil, nil
		}
		result = time.Unix(reflect.Indirect(rv).Int(), 0).UTC()
	default:

)

// T is the test logger.
var T = &testLogger{}

func init() {
	logger.AddSystemTarget(context.Background(), T)
}

type testLogger struct {
	current atomic.Pointer[testing.TB]
	action  atomic.Int32
}

// SetLogTB will set the logger to output to tb.
// Call the returned function to disable logging.
func (t *testLogger) SetLogTB(tb testing.TB) func() {
	return t.setTB(tb, logMessage)
}

// Unwrap returns the error wrapped in NetworkError.
func (n *NetworkError) Unwrap() error {
	return n.Err
}

// Client - http based RPC client.
type Client struct {
	connected int32 // ref: https://golang.org/pkg/sync/atomic/#pkg-note-BUG
	_         int32 // For 64 bits alignment
	lastConn  int64

	// HealthCheckFn is the function set to test for health.
	// If not set the client will not keep track of health.