btrc-hub/frontend/src/lib/clientAnimation.ts

import type { Transition } from 'framer-motion'

import type { ClientAnimationMode } from '@/lib/settings'

type ClientAnimationTransitionOptions = {
    normal:   Transition
    reduced?: Transition
    off?:     Transition }


export const clientAnimationsOff = (
    animationMode: ClientAnimationMode,
): boolean =>
    animationMode === 'off'


export const clientAnimationTransition = (
    animationMode: ClientAnimationMode,
    { normal, reduced, off }: ClientAnimationTransitionOptions,
): Transition => {
  if (animationMode === 'off')
    return off ?? { duration: 0 }

  if (animationMode === 'reduced')
    return reduced ?? { duration: .08, ease: 'linear' as const }

  return normal
}


export const clientScrollBehaviour = (
    animationMode: ClientAnimationMode,
): ScrollBehavior =>
    animationMode === 'off' ? 'auto' : 'smooth'

export const clientMotionTokens = {
    durationMS: { feedback: 120, popover: 160, collapse: 220, reorder: 200, drop: 180 },
    easing: [.2, 0, 0, 1] as const,
    cssEasing: 'cubic-bezier(.2, 0, 0, 1)',
    distance: 4 }