package internal

import (
	"math"
	"time"

	"github.com/egoist/mygo/ui"
)

// Ease moves e's background, border and text color fg to their targets over d.
func Ease(e *ui.Element, d time.Duration, fg ui.Color) *ui.Element {
	if d > 0 {
		e.Transition(ui.ElementTransition{Colors: true, Duration: d})
	}
	ch := func(key string, v uint8) uint8 {
		return uint8(math.Round(float64(e.Animate(key, float32(v), d))))
	}
	return e.TextColor(ui.Color{R: ch("mujica.fg.r", fg.R), G: ch("mujica.fg.g", fg.G), B: ch("mujica.fg.b", fg.B), A: ch("mujica.fg.a", fg.A)})
}