package visual

import (
	"testing"
	"time"

	"github.com/bnema/nefergui"
	"github.com/stretchr/testify/require"
)

func TestFadeAlphaInterpolatesAndArrives(t *testing.T) {
	t0 := time.Unix(100, 0)
	a, done := fadeAlpha(0, 1, t0, 2*time.Second, t0.Add(time.Second))
	require.InDelta(t, 0.5, a, 1e-9)
	require.False(t, done)
	a, done = fadeAlpha(0, 1, t0, 2*time.Second, t0.Add(3*time.Second))
	require.Equal(t, 1.0, a)
	require.True(t, done)
	_, done = fadeAlpha(1, 0, t0, 0, t0)
	require.True(t, done)
}

func TestFadeLayerIsClickThroughOverlay(t *testing.T) {
	l := fadeLayer()
	require.Equal(t, nefergui.LayerOverlay, l.Level)
	require.Equal(t, nefergui.KeyboardNone, l.Keyboard)
	require.NotNil(t, l.InputRects)
	require.Empty(t, l.InputRects)
	all := nefergui.AnchorTop | nefergui.AnchorBottom | nefergui.AnchorLeft | nefergui.AnchorRight
	require.Equal(t, all, l.Anchors)
}

func TestLabelsAndHintsNeverCarryInput(t *testing.T) {
	require.Equal(t, "Locked", labelFor(promptNone))
	require.Equal(t, "PIN", labelFor(promptPIN))
	require.Equal(t, "Denied", hintFor(nefergui.LockFailed))
	require.Equal(t, "...", hintFor(nefergui.LockBusy))
}