Bars Theme

1'use client'
2 
3import { useEffect, useRef } from 'react'
4import type { AriaAttributes, CSSProperties } from 'react'
5import { useReducedMotion } from 'motion/react'
6import { useCssColorRgb } from '@/lib/hooks/use-css-color-rgb'
7 
8export type OrbState = 'idle' | 'connecting' | 'listening' | 'thinking' | 'speaking' | 'error'
9 
10type DataAttributeValue = string | number | boolean | null | undefined
11 
12export interface OrbHtmlAttributes extends AriaAttributes {
13  id?: string
14  title?: string
15  role?: string
16  tabIndex?: number
17  [dataAttribute: `data-${string}`]: DataAttributeValue
18}
19 
20export interface BarsThemeProps extends OrbHtmlAttributes {
21  state: OrbState
22  volume: number
23  size: number
24  className?: string
25  style?: CSSProperties
26  disabled?: boolean
27  interactive?: boolean
28  onClick?: () => void
29}
30 
31const BAR_COUNT = 5
32const WAVE_FREQ = 1.4
33const WAVE_PHASE_STEP = (Math.PI * 2) / BAR_COUNT
34 
35const STATE_COLOR_TOKEN: Record<OrbState, 'accent' | 'destructive'> = {
36  idle: 'accent',
37  connecting: 'accent',
38  listening: 'accent',
39  thinking: 'accent',
40  speaking: 'accent',
41  error: 'destructive',
42}
43 
44const FALLBACK_ACCENT: [number, number, number] = [26, 115, 242]
45const FALLBACK_DESTRUCTIVE: [number, number, number] = [232, 80, 80]
46 
47const BLEND_MS = 280
48 
49export function BarsTheme({
50  state,
51  volume,
52  size,
53  className,
54  style,
55  disabled = false,
56  interactive = false,
57  onClick,
58  ...controlProps
59}: BarsThemeProps) {
60  const barRefs = useRef<(HTMLSpanElement | null)[]>([])
61  const containerRef = useRef<HTMLSpanElement>(null)
62  const rafRef = useRef<number>(0)
63  const smoothed = useRef<number[]>(new Array(BAR_COUNT).fill(0))
64  const volumeRef = useRef(volume)
65  const hoveredRef = useRef(false)
66  const hoverBoostRef = useRef(0)
67  const blendStartRef = useRef<number | null>(null)
68  const frozenHeightsRef = useRef<number[]>(new Array(BAR_COUNT).fill(0))
69  const prevStateRef = useRef(state)
70  const touchEndTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
71 
72  const reduceMotion = useReducedMotion()
73 
74  const accentRgb = useCssColorRgb('--color-accent', FALLBACK_ACCENT)
75  const destructiveRgb = useCssColorRgb('--color-destructive', FALLBACK_DESTRUCTIVE)
76  const accentRgbRef = useRef(accentRgb)
77  const destructiveRgbRef = useRef(destructiveRgb)
78  const currentColorRef = useRef<[number, number, number]>(accentRgb)
79  useEffect(() => {
80    accentRgbRef.current = accentRgb
81  }, [accentRgb])
82  useEffect(() => {
83    destructiveRgbRef.current = destructiveRgb
84// … truncated