sbs-deck

1import { atom, read, update } from 'claude-code'
2import type { EngineInterface, Register, Timer } from 'claude-code'
3
4import { cleanLine, colorLine } from './color'
5import { ANIMATIONS, AUTO, animationFor, decrypt, phraseFor } from './spinner'
6import type { SpinnerMode } from './spinner'
7
8// SecureBine site tokens (website_v3 app/globals.css, dark theme).
9const GOLD = '#F5A701'
10const INK_DIM = '#8FA3B0'
11// The site's floating-surface blue: a prompt still waiting to be read.
12const SLATE = '#46637B'
13
14// Nerd Font icons, written as escapes so no editor or pipe can drop them: a
15// shield for the operator and a robot for the assistant.
16const OPERATOR_ICON = '\uF132'
17const ASSISTANT_ICON = '\u{F06A9}'
18// The cyberpunk accents: neither is a site token.
19const NEON_CYAN = '#00E5FF'
20const NEON_MAGENTA = '#FF2E97'
21
22// The spinner's animation clock: a timer advances it while a turn runs, and
23// the Spinner hook reads it, so each tick redraws that one line alone.
24const spinnerTick = atom({ plugin: 'sbs-deck', key: 'spinnerTick' } as const, 0)
25const TICK_MS = 150
26// How many turn-opening reply ids are kept between loads.
27const MAX_SAVED_OPENERS = 400
28// How many drawn reply ids are remembered within a session.
29const MAX_TRACKED_REPLIES = 4000
30// A ticker nobody has drawn from for this many ticks stops itself: a turn that
31// ended without `turn.complete` must not leave it running.
32const IDLE_TICKS = 40
33
34// How many lines of a result are drawn colored before the rest is counted.
35const MAX_RESULT_LINES = 20
36
37function textOfBlocks(blocks: readonly unknown[]): string | undefined {
38  const texts: string[] = []
39
40  for (const block of blocks) {
41    // An image, a resource or any other block that is not plain text: the
42    // result is the engine's to draw, whole.
43    if (typeof block !== 'object' || block === null || !('text' in block) || typeof block.text !== 'string') {
44      return undefined
45    }
46
47    if ('type' in block && block.type !== 'text') {
48      return undefined
49    }
50
51    texts.push(block.text)
52  }
53
54  return texts.length > 0 ? texts.join('\n') : undefined
55}
56
57// A tool result's text, in whichever of the shapes it arrives: a shell
58// result's two streams, a bare string, or a list of text blocks. Undefined
59// for any other shape, which the engine then draws itself.
60function textOfOutput(output: unknown): string | undefined {
61  if (typeof output === 'string') {
62    return output
63  }
64
65  if (Array.isArray(output)) {
66    return textOfBlocks(output)
67  }
68
69  if (typeof output !== 'object' || output === null) {
70    return undefined
71  }
72
73  if ('content' in output && Array.isArray(output.content)) {
74    return textOfBlocks(output.content)
75  }
76
77  const streams = [
78    'stdout' in output ? output.stdout : undefined,
79    'stderr' in output ? output.stderr : undefined,
80  ].filter((stream): stream is string => typeof stream === 'string' && stream.trim().length > 0)
81
82  return streams.length > 0 ? streams.join('\n') : undefined
83}
84
85// One line saying what a tool call is for: the description the model gave a
86// shell command, else the tool's name and the first telling argument.
87function summaryOf(tool: string, input: unknown): string {
88  const name = tool.startsWith('mcp__') ? tool.slice(5).replace('__', ': ') : tool
89
90  if (typeof input !== 'object' || input === null) {
91    return name
92  }
93
94  const fields = input as Record<string, unknown>
95
96  if (typeof fields.description === 'string' && fields.description.trim().length > 0) {
97    return cleanLine(fields.description.trim().split('\n')[0] ?? '')
98  }
99
100  for (const key of ['file_path', 'path', 'pattern', 'query', 'url', 'command', 'skill', 'prompt']) {
101    const value = fields[key]
102
103    if (typeof value === 'string' && value.trim().length > 0) {
104      return `${name} ${cleanLine(value.trim().split('\n')[0] ?? '').slice(0, 100)}`
105    }
106  }
107
108  return name
109}
110
111// A prompt's text as it is compared: line endings alike, the spaces around
112// each line and the blank lines around the whole dropped, so a prompt is the
113// same text when it is queued, drawn and delivered.
114function comparable(text: string): string {
115  return text
116    .replaceAll('\r\n', '\n')
117    .split('\n')
118    .map(line => line.trim())
119    .join('\n')
120    .trim()
121}
122
123// Where `prompt` sits in `text` as whole lines: at the start or after a line
124// break, and running to the end or to a line break. -1 when it does not. The
125// engine frames a delivered prompt with sentences of its own, and a prompt
126// that merely occurs inside that framing has not been delivered.
127function wholeLineIndex(text: string, prompt: string): number {
128  let from = 0
129
130  for (;;) {
131    const at = text.indexOf(prompt, from)
132
133    if (at === -1) {
134      return -1
135    }
136
137    const end = at + prompt.length
138    const startsLine = at === 0 || text[at - 1] === '\n'
139    const endsLine = end === text.length || text[end] === '\n'
140
141    if (startsLine && endsLine) {
142      return at
143    }
144
145    from = at + 1
146  }
147}
148
149// The waiting prompts a delivered text carries, longest first, each match
150// taken out of the text before the next is looked for: a prompt that is only
151// a fragment of a longer delivered one is not counted as delivered with it.
152function deliveredAmong(waiting: ReadonlySet<string>, text: string): string[] {
153  let remaining = comparable(text)
154  const delivered: string[] = []
155
156  for (const prompt of [...waiting].sort((a, b) => b.length - a.length)) {
157    const at = prompt.length > 0 ? wholeLineIndex(remaining, prompt) : -1
158
159    if (at !== -1) {
160      delivered.push(prompt)
161      remaining = `${remaining.slice(0, at)}\u0000${remaining.slice(at + prompt.length)}`
162    }
163  }
164
165  return delivered
166}
167
168// The sentences the engine puts around a prompt it hands the model mid-turn.
169// What lies between them is the prompt itself.
170const DELIVERY_LEAD = 'The user sent a new message while you were working:\n'
171const DELIVERY_TAIL = '\n\nThis is how Claude Code surfaces'
172
173// The waiting prompts a `queued_command` attachment delivers. Where the text
174// carries the engine's framing, only what the framing encloses is compared,
175// and it must be a waiting prompt whole; text with no framing is searched by
176// whole lines.
177function deliveredByAttachment(waiting: ReadonlySet<string>, text: string): string[] {
178  const unified = text.replaceAll('\r\n', '\n')
179
180  if (!unified.includes(DELIVERY_LEAD)) {
181    return deliveredAmong(waiting, unified)
182  }
183
184  return unified
185    .split(DELIVERY_LEAD)
186    .slice(1)
187    .map(part => comparable(part.split(DELIVERY_TAIL)[0] ?? ''))
188    .filter(payload => waiting.has(payload))
189}
190
191// The email of the account signed in to Claude Code, from the same record the
192// status line reads: `oauthAccount.emailAddress` in `.claude.json`.
193async function signedInAccount($: EngineInterface): Promise<string | undefined> {
194  try {
195    const directory = (await $.env.get('CLAUDE_CONFIG_DIR')) ?? (await $.env.get('HOME'))
196    const record: unknown = JSON.parse(await $.fs.read(`${directory}/.claude.json`))
197
198    if (typeof record !== 'object' || record === null || !('oauthAccount' in record)) {
199      return undefined
200    }
201
202    const signedIn = record.oauthAccount
203
204    return typeof signedIn === 'object' &&
205      signedIn !== null &&
206      'emailAddress' in signedIn &&
207      typeof signedIn.emailAddress === 'string' &&
208      signedIn.emailAddress.length > 0
209      ? signedIn.emailAddress
210      : undefined
211  } catch {
212    return undefined
213  }
214}
215
216const SBS_USAGE = [
217  '/sbs on | off          all the styling',
218  '/sbs normal            stock Claude Code (the same as off)',
219  '/sbs reset             styling on with its defaults: quiet on, color on',
220  '/sbs quiet on | off    one-line tool rows with output hidden',
221  '/sbs color on | off   pattern coloring of output (seen with quiet off)',
222  '/sbs anim [name]       the spinner animation; with no name, the next one',
223  '/sbs name <name>       what the reply header calls the assistant; clear to undo',
224  '/sbs status            what is on now',
225].join('\n')
226
227// A name fit for the reply header: one line, upper case, no longer than the
228// header has room for. Undefined for anything that is not a usable name.
229function agentName(value: unknown): string | undefined {
230  if (typeof value !== 'string') {
231    return undefined
232  }
233
234  const name = cleanLine(value.split('\n')[0] ?? '').trim().toUpperCase().slice(0, 24)
235
236  return name.length > 0 ? name : undefined
237}
238
239// The display name the SBSForge platform gave this agent: `display_name` under
240// `agent:` in ~/.sbsforge/config/agent.yaml, which the platform writes when it
241// provisions a workspace. Undefined anywhere that file is absent.
242async function sbsforgeAgentName($: EngineInterface): Promise<string | undefined> {
243  try {
244    const home = await $.env.get('HOME')
245    const config = await $.fs.read(`${home}/.sbsforge/config/agent.yaml`)
246    const found = /^[ \t]+display_name:[ \t]*(.+)$/m.exec(config)?.[1] ?? ''
247
248    return agentName(found.trim().replace(/^(["'])(.*)\1$/, '$2'))
249  } catch {
250    return undefined
251  }
252}
253
254export const register: Register = on => {
255  // Which reply block opens each turn, so the header draws once per turn and
256  // not on every text block between tool calls. Saved to the store as each
257  // turn completes and read back at start, so a reload keeps the headers.
258  const turnOpeners = new Set<string>()
259  let isAwaitingOpener = false
260  // Every reply block drawn since this load, by id, and the ones among them
261  // that were drawn before the current turn started.
262  const drawnReplies = new Set<string>()
263  let earlierReplies: ReadonlySet<string> = new Set<string>()
264  // The prompts typed while a turn was still running and not yet handed to the
265  // model, by their text. Their rows draw apart until they are read, then as
266  // ordinary prompts. Module state: a reload forgets it.
267  const waitingPrompts = new Set<string>()
268
269  // The switches, kept in the plugin's store so they hold across sessions: the
270  // whole mod, quiet tool rows, and the pattern coloring of results. A result
271  // row is the engine's own again, folding and ctrl+o with it, only with quiet
272  // and coloring both off.
273  let isEnabled = true
274  // Quiet: each tool call is one line saying what it is for, and its output is
275  // not drawn unless it failed.
276  let isQuiet = true
277  // Which animation follows the spinner's phrase.
278  let animation = AUTO
279  // The running ticker, how far it has counted, and the count the spinner last
280  // drew at; then how many phrases each state has drawn from its pool, started
281  // at a random place so sessions differ, and the clock time the current one
282  // came up.
283  let ticker: Timer | undefined
284  let ticks = 0
285  let drawnAt = 0
286  const firstPick = Math.floor(Math.random() * 1000)
287  const picks: Record<SpinnerMode, number> = {
288    requesting: firstPick,
289    thinking: firstPick,
290    'tool-input': firstPick,
291    'tool-use': firstPick,
292    responding: firstPick,
293  }
294  let spinnerMode: SpinnerMode | undefined
295  let phraseSince = 0
296  // Who is shown beside OPERATOR: the account signed in to Claude Code, by its
297  // email, read again at every turn so a new sign-in shows at once. The
298  // machine's login name stands in where no account can be read.
299  let username = 'unknown'
300  let account: string | undefined
301  // What the reply header calls the assistant: a name given with /sbs name,
302  // else the name the session was started with (SBS_AGENT_NAME, or on the
303  // SBSForge platform the agent's display name from its agent.yaml, or the
304  // SBSFORGE_AGENT_NAME its workspace is given), else CLAUDE.
305  let givenName: string | undefined
306  let launchName: string | undefined
307  let isColoring = true
308
309  on('session.start', async ($, e, next) => {
310    await $.command.register({
311      name: 'sbs',
312      description: 'SecureBine styling: on, off, normal, reset, quiet on|off, color on|off, anim <name>, status',
313    })
314    await $.command.register({
315      name: 'sbs-color',
316      description: 'Turn pattern coloring of command output on or off',
317    })
318    username = (await $.env.get('USER')) ?? username
319
320    account = await signedInAccount($)
321    launchName =
322      agentName(await $.env.get('SBS_AGENT_NAME')) ??
323      (await sbsforgeAgentName($)) ??
324      agentName(await $.env.get('SBSFORGE_AGENT_NAME'))
325    givenName = agentName(await $.store.get('agentName'))
326    isEnabled = (await $.store.get('isEnabled')) !== false
327    isColoring = (await $.store.get('isColoring')) !== false
328    isQuiet = (await $.store.get('isQuiet')) !== false
329
330    const savedAnimation = await $.store.get('animation')
331
332    if (typeof savedAnimation === 'string' && (savedAnimation === AUTO || Object.hasOwn(ANIMATIONS, savedAnimation))) {
333      animation = savedAnimation
334    }
335
336    const savedOpeners = await $.store.get('turnOpeners')
337
338    if (Array.isArray(savedOpeners)) {
339      for (const id of savedOpeners.slice(-MAX_SAVED_OPENERS)) {
340        if (typeof id === 'string') {
341          turnOpeners.add(id)
342        }
343      }
344    }
345    $.ui.invalidate('ui.render')
346
347    return next(e)
348  })
349
350  on('command.run', { command: 'sbs' }, async ($, e) => {
351    const [what = '', how = ''] = e.args.trim().toLowerCase().split(/\s+/)
352    const status = () =>
353      `Styling is ${isEnabled ? 'on' : 'off'}; quiet tool rows are ${isQuiet ? 'on' : 'off'}; output coloring is ${isColoring ? 'on' : 'off'}.`
354
355    // On or off as asked; with neither word, the opposite of what it is now.
356    const setting = (current: boolean): boolean | undefined =>
357      how === 'on' ? true : how === 'off' ? false : how === '' ? !current : undefined
358
359    if (what === '' || what === 'status') {
360      return { text: `${status()}\n${SBS_USAGE}` }
361    }
362
363    if (what === 'name') {
364      const wanted = e.args.trim().slice(what.length).trim()
365
366      if (wanted === '') {
367        return {
368          text: `The reply header says ${givenName ?? launchName ?? 'CLAUDE'}. Set it with /sbs name <name>; /sbs name clear goes back to ${launchName ?? 'CLAUDE'}.`,
369        }
370      }
371
372      givenName = wanted.toLowerCase() === 'clear' ? undefined : agentName(wanted)
373
374      if (givenName === undefined) {
375        await $.store.delete('agentName')
376      } else {
377        await $.store.set('agentName', givenName)
378      }
379
380      $.ui.invalidate('ui.render')
381
382      return { text: `The reply header now says ${givenName ?? launchName ?? 'CLAUDE'}.` }
383    }
384
385    if (what === 'anim' || what === 'ani' || what === 'animation') {
386      const all = [AUTO, ...Object.keys(ANIMATIONS)]
387      const names = all.join(', ')
388
389      // With no name, move on to the next one, so repeating the command
390      // steps through them all.
391      if (how === '' || how === 'next') {
392        animation = all[(all.indexOf(animation) + 1) % all.length] ?? AUTO
393        await $.store.set('animation', animation)
394
395        return {
396          text: `Spinner animation is now ${animation}. Repeat /sbs anim for the next, or name one: ${names}.`,
397        }
398      }
399
400      if (how === 'list') {
401        return { text: `Spinner animation is ${animation}. Choose from: ${names}.` }
402      }
403
404      if (!all.includes(how)) {
405        return { text: `No animation called "${how}". Choose from: ${names}.` }
406      }
407
408      animation = how
409      await $.store.set('animation', animation)
410
411      return { text: `Spinner animation is ${animation}.` }
412    }
413
414    if ((what === 'on' || what === 'off' || what === 'normal' || what === 'reset') && how === '') {
415      isEnabled = what === 'on' || what === 'reset'
416
417      if (what === 'reset') {
418        isQuiet = true
419        isColoring = true
420      }
421    } else if (what === 'quiet' && setting(isQuiet) !== undefined) {
422      isQuiet = setting(isQuiet) ?? isQuiet
423    } else if ((what === 'color' || what === 'colour') && setting(isColoring) !== undefined) {
424      isColoring = setting(isColoring) ?? isColoring
425    } else {
426      return { text: `Unknown option "${e.args.trim()}".\n${SBS_USAGE}` }
427    }
428
429    await $.store.set('isEnabled', isEnabled)
430    await $.store.set('isQuiet', isQuiet)
431    await $.store.set('isColoring', isColoring)
432    $.ui.invalidate('ui.render')
433
434    return { text: status() }
435  })
436
437  on('command.run', { command: 'sbs-color' }, async $ => {
438    isColoring = !isColoring
439    await $.store.set('isColoring', isColoring)
440    $.ui.invalidate('ui.render')
441
442    return { text: `Output coloring is ${isColoring ? 'on' : 'off'}.` }
443  })
444
445  on('prompt.submit', async ($, e, next) => {
446    const current = await signedInAccount($)
447
448    if (current !== account) {
449      account = current
450      $.ui.invalidate('ui.render')
451    }
452
453    // A prompt typed while a turn was running carries that turn's id.
454    if (e.turnId !== undefined && (e.origin.kind === 'composer' || e.origin.kind === 'bridge')) {
455      waitingPrompts.add(comparable(e.text))
456    }
457
458    return next(e)
459  })
460
461  // A waiting prompt is read when the engine injects it into the running turn
462  // (the `queued_command` attachment) or when a new turn opens with it.
463  on('prompt.attachment', ($, e, next) => {
464    if (e.type === 'queued_command') {
465      for (const prompt of deliveredByAttachment(waitingPrompts, e.text)) {
466        waitingPrompts.delete(prompt)
467        $.ui.invalidate('ui.render')
468      }
469    }
470
471    return next(e)
472  })
473
474  // Each turn, however it began, gets one reply header and a running ticker.
475  on('turn.start', ($, e, next) => {
476    for (const prompt of deliveredAmong(waitingPrompts, e.text)) {
477      waitingPrompts.delete(prompt)
478      $.ui.invalidate('ui.render')
479    }
480
481    if (drawnReplies.size > MAX_TRACKED_REPLIES) {
482      const kept = [...drawnReplies].slice(-MAX_TRACKED_REPLIES / 2)
483      drawnReplies.clear()
484
485      for (const id of kept) {
486        drawnReplies.add(id)
487      }
488    }
489
490    earlierReplies = new Set(drawnReplies)
491    isAwaitingOpener = true
492    drawnAt = ticks
493    ticker?.cancel()
494    ticker = $.clock.every(TICK_MS, () => {
495      ticks += 1
496
497      if (ticks - drawnAt > IDLE_TICKS) {
498        ticker?.cancel()
499        ticker = undefined
500
501        return
502      }
503
504      void update($, spinnerTick, count => count + 1)
505    })
506
507    return next(e)
508  })
509
510  on('turn.complete', async ($, e, next) => {
511    ticker?.cancel()
512    ticker = undefined
513
514    const kept = [...turnOpeners].slice(-MAX_SAVED_OPENERS)
515
516    if (kept.length < turnOpeners.size) {
517      turnOpeners.clear()
518
519      for (const id of kept) {
520        turnOpeners.add(id)
521      }
522    }
523
524    await $.store.set('turnOpeners', kept)
525
526    return next(e)
527  })
528
529  // The person's own prompts only: notifications and other agents' messages
530  // share the UserMessage site and keep the engine's drawing.
531  on('ui.render', { component: 'UserMessage' }, async ($, e, next) => {
532    const kind = e.props.origin.kind
533
534    if (!isEnabled || (kind !== 'composer' && kind !== 'bridge')) {
535      return next(e)
536    }
537
538    const { Box, Text } = $.ui.resolve(e)
539    const inner = await next(e)
540    const prompt = comparable(e.props.text)
541    const isWaiting = waitingPrompts.has(prompt)
542    const accent = isWaiting ? SLATE : GOLD
543
544    return (
545      <Box flexDirection="column" borderStyle="single" borderColor={accent} paddingX={1}>
546        <Box flexDirection="row">
547          <Text color={accent}>{OPERATOR_ICON} </Text>
548          <Text bold color={accent}>
549            OPERATOR // {isWaiting ? 'QUEUED' : 'UPLINK'}:
550          </Text>
551          <Text color={INK_DIM}> {account ?? username}</Text>
552        </Box>
553        {/* The engine's row opens with a blank line; the eyebrow takes it. */}
554        <Box flexDirection="column" marginTop={-1}>
555          {inner}
556        </Box>
557      </Box>
558    )
559  })
560
561  on('ui.render', { component: 'AssistantMessage' }, async ($, e, next) => {
562    // Kept whether or not the styling is on, so switching it back on finds the
563    // books in order. Only a block first drawn in this turn can open it: an
564    // earlier reply drawn again must not take the header meant for the new one.
565    drawnReplies.add(e.requestId)
566
567    if (isAwaitingOpener && !earlierReplies.has(e.requestId) && e.props.isFirstOfReply) {
568      turnOpeners.add(e.requestId)
569      isAwaitingOpener = false
570    }
571
572    if (!isEnabled || !turnOpeners.has(e.requestId)) {
573      return next(e)
574    }
575
576    const { Box, Text } = $.ui.resolve(e)
577    const inner = await next(e)
578
579    return (
580      <Box flexDirection="column">
581        <Box flexDirection="row">
582          <Text color={NEON_CYAN}>{ASSISTANT_ICON} </Text>
583          <Text bold color={NEON_CYAN}>
584            {givenName ?? launchName ?? 'CLAUDE'}
585          </Text>
586          <Text color={INK_DIM}> // DOWNLINK</Text>
587        </Box>
588        {/* The engine's block opens with a blank line; the header takes it. */}
589        <Box flexDirection="column" marginTop={-1}>
590          {inner}
591        </Box>
592      </Box>
593    )
594  })
595
596  // Quiet mode: a tool call is one line, what it is for and how it stands.
597  on('ui.render', { component: 'ToolUse' }, ($, e, next) => {
598    if (!isEnabled || !isQuiet) {
599      return next(e)
600    }
601
602    const { Box, Text } = $.ui.resolve(e)
603    const hasFailed = e.props.isErrored || e.props.isInterrupted
604    const mark = e.props.isRunning ? '▸' : hasFailed ? '✗' : '✓'
605    const markColor = e.props.isRunning ? NEON_CYAN : hasFailed ? '#FF5555' : '#3EE08A'
606
607    return (
608      <Box flexDirection="row">
609        <Text color={markColor}>  {mark} </Text>
610        <Text color={e.props.isRunning ? undefined : INK_DIM} wrap="truncate-end">
611          {summaryOf(e.props.tool, e.props.input)}
612        </Text>
613      </Box>
614    )
615  })
616
617  // With quiet off, shell and MCP results are drawn here, colored by pattern.
618  // The engine's own folding (ctrl+o) is not available to a hook-drawn row, so
619  // a long result shows its head and a count; with quiet off, /sbs color hands
620  // those rows back to the engine.
621  on('ui.render', { component: 'ToolResult' }, async ($, e, next) => {
622    if (!isEnabled) {
623      return next(e)
624    }
625
626    // Quiet mode draws no output for a call that worked; a failure shows whole.
627    if (isQuiet && !e.props.isErrored) {
628      const { Box } = $.ui.resolve(e)
629
630      return <Box />
631    }
632
633    const { Box, Text } = $.ui.resolve(e)
634    const isOurs = e.props.tool === 'Bash' || e.props.tool.startsWith('mcp__')
635    const text = isColoring && isOurs && !e.props.isErrored ? textOfOutput(e.props.output) : undefined
636    const lines = text?.replace(/\s+$/, '').split('\n').map(cleanLine) ?? []
637
638    if (lines.length === 0 || lines.every(line => line.trim().length === 0)) {
639      return next(e)
640    }
641
642    const hidden = lines.length - MAX_RESULT_LINES
643
644    return (
645      <Box flexDirection="row">
646        <Text color={INK_DIM}>{'  ⎿  '}</Text>
647        <Box flexDirection="column" flexGrow={1} flexShrink={1}>
648          {lines.slice(0, MAX_RESULT_LINES).map(line => (
649            <Text wrap="wrap">
650              {colorLine(line).map(segment =>
651                segment.style ? (
652                  <Text
653                    color={segment.style.color}
654                    bold={segment.style.bold}
655                    underline={segment.style.underline}
656                  >
657                    {segment.text}
658                  </Text>
659                ) : (
660                  segment.text
661                ),
662              )}
663            </Text>
664          ))}
665          {hidden > 0 ? (
666            <Text color={INK_DIM}>
667              … +{hidden} lines (/sbs color for the full uncolored view)
668            </Text>
669          ) : null}
670        </Box>
671      </Box>
672    )
673  })
674
675  on('ui.render', { component: 'Spinner' }, async ($, e, next) => {
676    if (!isEnabled) {
677      return next(e)
678    }
679
680    // Reading the tick subscribes this line to it; the animation itself runs
681    // off the clock, so it stays right however rarely the line is redrawn.
682    await read($, spinnerTick)
683    drawnAt = ticks
684
685    // The ticker stops itself when the spinner has been away (a dialog, a long
686    // stretch of streamed text). Back on screen mid-turn, it is started again.
687    if (ticker === undefined) {
688      ticker = $.clock.every(TICK_MS, () => {
689        ticks += 1
690
691        if (ticks - drawnAt > IDLE_TICKS) {
692          ticker?.cancel()
693          ticker = undefined
694
695          return
696        }
697
698        void update($, spinnerTick, count => count + 1)
699      })
700    }
701
702    const now = await $.clock.now()
703    const frame = Math.floor(now / TICK_MS)
704
705    if (e.props.mode !== spinnerMode) {
706      spinnerMode = e.props.mode
707      phraseSince = now
708      picks[e.props.mode] += 1
709    }
710
711    const age = Math.floor((now - phraseSince) / TICK_MS)
712    const phrase = phraseFor(e.props.mode, picks[e.props.mode])
713    const draw = ANIMATIONS[animationFor(animation, phrase)] ?? ANIMATIONS.bar
714
715    return next({
716      ...e,
717      props: { ...e.props, word: decrypt(phrase, age, frame), suffix: ` ${draw?.(frame) ?? ''}` },
718    })
719  })
720
721  on('ui.render', { component: 'TurnDuration' }, ($, e, next) =>
722    isEnabled ? next({ ...e, props: { ...e.props, word: 'Jacked out' } }) : next(e),
723  )
724}
725

1// Colors plain command and device output by pattern: it splits each line
2// into segments, the matched ones carrying a style, for a hook to draw as Text.
3
4export type Style = { color: string; bold?: boolean; underline?: boolean }
5export type Segment = { text: string; style?: Style }
6
7const GOOD: Style = { color: '#3EE08A', bold: true }
8const BAD: Style = { color: '#FF5555', bold: true }
9const WARN: Style = { color: '#FFC23D', bold: true }
10const ADDRESS: Style = { color: '#00E5FF', bold: true }
11const MAC: Style = { color: '#B26BFF' }
12const INTERFACE: Style = { color: '#F5A701' }
13const NUMBER: Style = { color: '#FFC23D' }
14const TIME: Style = { color: '#6FA8DC' }
15const PATH: Style = { color: '#7FC8D8' }
16const URL_LINK: Style = { color: '#00E5FF', underline: true }
17const KEY: Style = { color: '#FF2E97' }
18const STRING: Style = { color: '#9FD6A8' }
19const HASH: Style = { color: '#B26BFF' }
20const COMMENT: Style = { color: '#5E7583' }
21const RULE: Style = { color: '#FF2E97', bold: true }
22
23// Tried in this order at each position, so the earlier rule wins a tie: a MAC
24// before a clock time, "administratively down" before "down".
25const RULES: readonly (readonly [string, Style])[] = [
26  ['https?://[^\\s"\'<>)\\]]+', URL_LINK],
27  ['\\b(?:[0-9A-Fa-f]{2}[:-]){5}[0-9A-Fa-f]{2}\\b|\\b[0-9A-Fa-f]{4}\\.[0-9A-Fa-f]{4}\\.[0-9A-Fa-f]{4}\\b', MAC],
28  ['\\b\\d{4}-\\d{2}-\\d{2}(?:[T ]\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d+)?)?Z?)?\\b|\\b\\d{2}:\\d{2}:\\d{2}\\b', TIME],
29  ['\\b(?:\\d{1,3}\\.){3}\\d{1,3}(?:/\\d{1,2})?(?::\\d{1,5})?\\b', ADDRESS],
30  ['\\b(?:[0-9A-Fa-f]{1,4}:){2,7}(?::?[0-9A-Fa-f]{1,4}){1,6}(?:/\\d{1,3})?\\b', ADDRESS],
31  ['"(?:[^"\\\\]|\\\\.)*"(?=\\s*:)', KEY],
32  ['"(?:[^"\\\\]|\\\\.)*"', STRING],
33  [
34    '\\b(?:GigabitEthernet|TenGigabitEthernet|FortyGigabitEthernet|HundredGigE|FastEthernet|Ethernet|Port-channel|Loopback|Tunnel|Vlan|Gi|Te|Fo|Hu|Fa|Eth|Po|Lo|Tu|Vl)\\d+(?:/\\d+)*(?:\\.\\d+)?\\b|\\b(?:ge|xe|et|ae|irb|lo|em|fxp|vme|st)-?\\d+(?:/\\d+)*(?:\\.\\d+)?\\b|\\bethernet\\d+/\\d+(?:\\.\\d+)?\\b',
35    INTERFACE,
36  ],
37  ['(?<![\\w.])~?(?:\\.{1,2})?/[\\w.@+-]+(?:/[\\w.@+-]+)+/?', PATH],
38  [
39    '\\b(?:administratively down|admin down|err-disabled|notconnect|not connected|warning|warn|deprecated|degraded|pending|skipped|suspended|stale)\\b',
40    WARN,
41  ],
42  [
43    '\\b(?:down|failed|failure|fail|errors?|fatal|critical|panic|denied|refused|rejected|unreachable|timed out|timeout|disabled|offline|inactive|idle|missing|not found|false)\\b',
44    BAD,
45  ],
46  [
47    '\\b(?:up|established|active|connected|ok|pass|passed|success|successful|succeeded|enabled|running|online|ready|complete|completed|done|true)\\b',
48    GOOD,
49  ],
50  ['\\b(?=[0-9a-f]*[a-f])(?=[0-9a-f]*\\d)(?:[0-9a-f]{7,12}|[0-9a-f]{40})\\b', HASH],
51  ['\\b\\d+(?:\\.\\d+)?(?:%|ms|[KMGT]i?B|[kKMG]?bps|pps|[KMG]?Hz)(?![\\w])', NUMBER],
52]
53
54const PATTERN = new RegExp(RULES.map(([source]) => `(${source})`).join('|'), 'gi')
55const COMMENT_LINE = /^\s*(?:#|\/\/|!)(?:\s|$)/
56const RULE_LINE = /^\s*(?:[=\-*_~]{4,}|={2,}\s.*\s={2,})\s*$/
57// The words that mean something else in lower case inside ordinary prose are
58// still colored: a false positive costs a color, never a character.
59
60// Escape sequences a command printed are dropped, a tab becomes spaces and any
61// other control character goes: a drawn Text may hold none.
62const ESCAPE_SEQUENCE = /\u001b(?:\[[0-9;?]*[ -/]*[@-~]|\][^\u0007\u001b]*(?:\u0007|\u001b\\)|[@-Z\\-_])/g
63const CONTROL = /[\u0000-\u0008\u000b-\u001f\u007f-\u009f]/g
64const MAX_LINE = 2000
65
66export function cleanLine(line: string): string {
67  return line.replace(ESCAPE_SEQUENCE, '').replaceAll('\t', '    ').replace(CONTROL, '').slice(0, MAX_LINE)
68}
69
70export function colorLine(line: string): Segment[] {
71  if (line.length === 0) {
72    return [{ text: ' ' }]
73  }
74
75  if (RULE_LINE.test(line)) {
76    return [{ text: line, style: RULE }]
77  }
78
79  if (COMMENT_LINE.test(line)) {
80    return [{ text: line, style: COMMENT }]
81  }
82
83  const segments: Segment[] = []
84  let cursor = 0
85
86  for (const match of line.matchAll(PATTERN)) {
87    const rule = RULES[match.slice(1).findIndex(group => group !== undefined)]
88
89    if (!rule || match[0].length === 0) {
90      continue
91    }
92
93    if (match.index > cursor) {
94      segments.push({ text: line.slice(cursor, match.index) })
95    }
96
97    segments.push({ text: match[0], style: rule[1] })
98    cursor = match.index + match[0].length
99  }
100
101  if (cursor < line.length) {
102    segments.push({ text: line.slice(cursor) })
103  }
104
105  return segments
106}
107

1// The spinner line's text for one animation tick: a phrase for what the turn
2// is doing, resolving out of noise when it changes, and a scanning bar. The
3// phrases are science-fiction references, each filed under the state its
4// plain sense reads as at a glance.
5
6export type SpinnerMode = 'requesting' | 'responding' | 'thinking' | 'tool-input' | 'tool-use'
7
8export const SPINNER_PHRASES: Readonly<Record<SpinnerMode, readonly string[]>> = {
9  requesting: [
10    'Jacking in',
11    'Opening the uplink',
12    'Handshaking',
13    'Tightbeaming the request',
14    'Opening a tightbeam',
15    'Hailing the Rocinante',
16    'Raising Tycho Station',
17    'Hailing beltalowda',
18    'Opening hailing frequencies',
19    'Calling the operator',
20    'Dialing the Nebuchadnezzar',
21    'Diving the net',
22    'Hailing Section 9',
23    'Entering the Grid',
24    'Pinging the mothership',
25    'Requesting docking clearance',
26    'Requesting to know more',
27    'Needlecasting in',
28    'Phoning home',
29    'Establishing a secure bind',
30    'Jacking into cyberspace',
31    'Hailing Wintermute',
32    'Goggling into the Metaverse',
33    'Entering the Black Sun',
34    'Tapping the Feed',
35    'Waking the Primer',
36    'Calling the worm',
37    'Hailing the Guild',
38    'Opening the ansible',
39    'Farcasting in',
40    'Dialing the gate',
41    'Hailing Galactica Actual',
42    'Hailing on the Codec',
43    'Initiating neural handshake',
44    'Entering the Drift',
45    'Presenting the multipass',
46    'Calling Batou',
47    'Hailing White Base',
48    'Hailing the SDF-1',
49    'Hailing Skull Leader',
50    'Uplinking to Cyberdyne',
51    'Hailing Skynet',
52    'Requesting clothes and boots',
53    'Sending recognition codes',
54  ],
55  thinking: [
56    'Cracking the cipher',
57    'Reading the black box',
58    'Overclocking',
59    'Listening to my ghost',
60    'Consulting the Tachikomas',
61    'Asking the Puppet Master',
62    'Deep diving',
63    'Dreaming of electric sheep',
64    'Reading the digital rain',
65    'Contemplating the spoon',
66    'Learning kung fu',
67    'Consulting the Oracle',
68    'Freeing my mind',
69    'Seeing the code',
70    'Plotting the burn',
71    'Understanding the bug',
72    'Trusting Envoy intuition',
73    'Reading the cortical stack',
74    'Asking Poe',
75    'Computing forty-two',
76    'Asking Deep Thought',
77    'Running Mentat computations',
78    'Consulting the Three Laws',
79    'Calculating the odds',
80    'Calculating the jump',
81    'Plotting a course',
82    'Decrypting',
83    'Decoding the transmission',
84    'Asking the Dixie Flatline',
85    'Consulting the Hosaka',
86    'Asking the Librarian',
87    'Listening to Reason',
88    'Reading the Primer',
89    'Puzzling out Castle Turing',
90    'Weighing plans within plans',
91    'Seeing the Golden Path',
92    'Consulting prescience',
93    'Consulting the Prime Radiant',
94    'Computing psychohistory',
95    'Consulting the TechnoCore',
96    'Consulting a ship Mind',
97    'Checking for gravitas',
98    'Finding the enemy\'s gate',
99    'Consulting MU-TH-UR',
100    'Reviewing prime directives',
101    'Querying the ship computer',
102    'Consulting the Guide',
103    'Thinking with portals',
104    'Asking Cortana',
105    'Consulting the precogs',
106    'Going a level deeper',
107    'Checking the totem',
108    'Reading heptapod logograms',
109    'Assessing the threat',
110    'Recognizing a UNIX system',
111    'Consulting the Codex',
112    'Awakening as a Newtype',
113    'Sensing a Newtype flash',
114    'Decoding protoculture',
115    'Reading the HUD',
116    'Checking the neural net CPU',
117    'Consulting the Hybrid',
118    'Charting the way to Earth',
119  ],
120  'tool-input': [
121    'Calibrating',
122    'Compiling the payload',
123    'Arming the daemon',
124    'Forging the packet',
125    'Booting the deck',
126    'Compiling the icebreaker',
127    'Slotting the chip',
128    'Loading the quickhack',
129    'Loading the Construct',
130    'Loading a pilot program',
131    'Loading the jump program',
132    'Loading guns, lots of guns',
133    'Priming the thermoptics',
134    'Prepping for the drop',
135    'Suiting up',
136    'Hitting the crash couch',
137    'Loading the PDCs',
138    'Charging the railgun',
139    'Warming up the reactor',
140    'Checking the suit seals',
141    'Prepping the Roci',
142    'Prepping a fresh sleeve',
143    'Priming the neurachem',
144    'Spooling up the FTL drive',
145    'Setting the jump coordinates',
146    'Charging the capacitors',
147    'Booting the Ono-Sendai',
148    'Slotting the Kuang virus',
149    'Slotting a microsoft',
150    'Compiling the nam-shub',
151    'Priming the matter compiler',
152    'Rallying the Mouse Army',
153    'Setting the thumper',
154    'Donning the stillsuit',
155    'Raising the Holtzman shield',
156    'Setting phasers to stun',
157    'Raising shields',
158    'Locking S-foils',
159    'Grabbing my towel',
160    'Raising the sync ratio',
161    'Getting in the robot',
162    'Locking chevron seven',
163    'Charging the flux capacitor',
164    'Setting humor to 75 percent',
165    'Unfolding a sophon',
166    'Appeasing the machine spirit',
167    'Reciting rites of activation',
168    'Raising the attack barrier',
169    'Feeding the Tachikomas oil',
170    'Prepping the mobile suit',
171    'Loading the catapult deck',
172    'Drawing the beam saber',
173    'Charging the reflex cannon',
174    'Spooling the fold drive',
175    'Switching to Battloid mode',
176    'Setting CPU to read/write',
177    'Reloading the shotgun',
178    'Setting Condition One',
179  ],
180  'tool-use': [
181    'Administering Voight-Kampff',
182    'Running a baseline test',
183    'Checking doors and corners',
184    'Lighting the Epstein drive',
185    'Rerouting power',
186    'Reversing the polarity',
187    'Probing the net',
188    'Riding the wire',
189    'Walking the stack',
190    'Sweeping the ports',
191    'Tunneling',
192    'Breaking the ICE',
193    'Riding the simstim',
194    'Running the shadows',
195    'Slicing the firewall',
196    'Hacking the Gibson',
197    'Running Breach Protocol',
198    'Executing the quickhack',
199    'Pulling the data shard',
200    'Sending in the Tachikomas',
201    'Bug hunting',
202    'Killing bugs',
203    'Doing my part',
204    'Making the drop',
205    'Deploying Mobile Infantry',
206    'Burning hard',
207    'Firing the PDCs',
208    'Clearing the room',
209    'Running on neurachem',
210    'Watching the motion tracker',
211    'Making it so',
212    'Punching it',
213    'Jumping to lightspeed',
214    'Staying on target',
215    'Making the Kessel Run',
216    'Letting the spice flow',
217    'Running Kuang Mark Eleven',
218    'Cutting black ICE',
219    'Raiding Sense/Net',
220    'Storming Straylight',
221    'Running the matter compiler',
222    'Compiling from the Feed',
223    'Unleashing the Mouse Army',
224    'Riding the sandworm',
225    'Walking without rhythm',
226    'Folding space',
227    'Harvesting the spice',
228    'Crossing the deep desert',
229    'Searching the Jedi archives',
230    'Running a level 3 diagnostic',
231    'Scanning with the tricorder',
232    'Energizing',
233    'Giving her all she\'s got',
234    'Opening the pod bay doors',
235    'Keeping Serenity flying',
236    'Drilling in the Battle Room',
237    'Displacing a knife missile',
238    'Engaging Improbability Drive',
239    'Waving the sonic screwdriver',
240    'Fighting for the Users',
241    'Chasing the bounty',
242    'Finishing the fight',
243    'Testing, for science',
244    'Sneaking in a cardboard box',
245    'Hitting 88 miles per hour',
246    'Crossing the streams',
247    'Hacking the planet',
248    'Sciencing the shit out of it',
249    'Looping the day',
250    'Purging the heresy',
251    'Breaching the attack barrier',
252    'Scanning the cyberbrain',
253    'Chasing the Laughing Man',
254    'Launching the Gundam',
255    'Firing the beam rifle',
256    'Spreading Minovsky particles',
257    'Going three times faster',
258    'Dropping the colony',
259    'Activating Trans-Am',
260    'Scrambling the Veritechs',
261    'Executing a space fold',
262    'Pulling a Daedalus Maneuver',
263    'Firing the main gun',
264    'Terminating the target',
265    'Displacing through time',
266    'Hunting Sarah Connor',
267    'Launching the alert Vipers',
268    'Jumping the fleet',
269    'Rolling the hard six',
270    'Running the Adama Maneuver',
271    'Checking for Cylons',
272  ],
273  responding: [
274    'Uploading the take',
275    'Piping the feed',
276    'Tightbeaming the reply',
277    'Broadcasting to the Belt',
278    'Making it clear, sasa ke?',
279    'Needlecasting the reply',
280    'Printing the readout',
281    'Rendering the hologram',
282    'Transmitting on all bands',
283    'Filing the after-action',
284    'Writing the debrief',
285    'Letting you know more',
286    'Reporting to the Major',
287    'Whispering back',
288    'Surfacing with the answer',
289    'Recording the captain\'s log',
290    'Beaming it down',
291    'Sending the Death Star plans',
292    'Delivering the pizza',
293    'Reporting to Armitage',
294    'Uploading intel to the CIC',
295    'Handing over the hypercard',
296    'Racting the reply',
297    'Writing on mediatronic paper',
298    'Speaking with the Voice',
299    'Broadcasting on the ansible',
300    'Filing the Guide entry',
301    'Transmitting to Starfleet',
302    'Logging the sol entry',
303    'Briefing Aramaki',
304    'Reporting to Bright',
305    'Reporting to Captain Gloval',
306    'Singing like Minmei',
307    'Saying hasta la vista',
308    'Promising I\'ll be back',
309    'Giving the thumbs up',
310    'Reporting to the CIC',
311    'Saying so say we all',
312    'Citing the Codex Astartes',
313  ],
314}
315
316const NOISE = '▓▒░█#%&@$01<>/=+'
317// Ticks a phrase takes to resolve, whatever its length: under a second, so a
318// state that lasts only a moment still shows a readable phrase.
319const REVEAL_TICKS = 5
320// Once resolved, one character flickers back to noise every this many ticks.
321const GLITCH_PERIOD = 23
322const BAR_CELLS = 6
323
324function greatestCommonDivisor(a: number, b: number): number {
325  return b === 0 ? a : greatestCommonDivisor(b, a % b)
326}
327
328// A step through a pool of `size` that visits every entry before repeating
329// one, and does not simply walk the list in the order it is written.
330function strideFor(size: number): number {
331  return [31, 37, 41, 43].find(stride => greatestCommonDivisor(stride, size) === 1) ?? 1
332}
333
334// The phrase for a mode at one pick. The caller keeps a pick per mode and
335// advances it each time the turn enters that mode, so `size` picks in a row
336// show every phrase of the pool once.
337export function phraseFor(mode: SpinnerMode, pick: number): string {
338  const phrases = SPINNER_PHRASES[mode]
339  const index = Number.isFinite(pick) ? Math.abs(Math.trunc(pick)) : 0
340
341  return phrases[(index * strideFor(phrases.length)) % phrases.length] ?? phrases[0] ?? ''
342}
343
344function noiseAt(tick: number, index: number): string {
345  return NOISE[(tick * 7 + index * 13) % NOISE.length] ?? '#'
346}
347
348// `age` is the ticks since this phrase came up: it decrypts left to right.
349export function decrypt(phrase: string, age: number, tick: number): string {
350  const revealed = Math.ceil((phrase.length * Math.max(0, age)) / REVEAL_TICKS)
351  const isResolved = revealed >= phrase.length
352  const glitchAt = isResolved && tick % GLITCH_PERIOD === 0 ? (tick / GLITCH_PERIOD) * 5 % phrase.length : -1
353
354  return [...phrase]
355    .map((character, index) => {
356      const isNoise = character !== ' ' && (index >= revealed || index === glitchAt)
357
358      return isNoise ? noiseAt(tick, index) : character
359    })
360    .join('')
361}
362
363// A two-cell block that sweeps the bar and bounces off its ends.
364export function scanBar(tick: number): string {
365  const span = BAR_CELLS - 2
366  const step = tick % (span * 2)
367  const start = step <= span ? step : span * 2 - step
368
369  return Array.from({ length: BAR_CELLS }, (_, index) =>
370    index === start || index === start + 1 ? '▰' : '▱',
371  ).join('')
372}
373
374// Pixel animations for the end of the spinner line. A braille character is a
375// 2 by 4 grid of dots, so a strip of them is a small screen: 8 cells give 16
376// by 4 pixels. Each animation says which pixels are lit at a frame.
377const STRIP_CELLS = 8
378const STRIP_WIDTH = STRIP_CELLS * 2
379const STRIP_HEIGHT = 4
380// The braille dot for each (column, row) of a cell, as its bit.
381const DOT_BITS = [
382  [0x01, 0x02, 0x04, 0x40],
383  [0x08, 0x10, 0x20, 0x80],
384] as const
385
386type Lit = (x: number, y: number, frame: number) => boolean
387
388function strip(lit: Lit, frame: number): string {
389  let out = ''
390
391  for (let cell = 0; cell < STRIP_CELLS; cell += 1) {
392    let bits = 0
393
394    for (let column = 0; column < 2; column += 1) {
395      for (let row = 0; row < STRIP_HEIGHT; row += 1) {
396        if (lit(cell * 2 + column, row, frame)) {
397          bits |= DOT_BITS[column]?.[row] ?? 0
398        }
399      }
400    }
401
402    out += String.fromCharCode(0x2800 + bits)
403  }
404
405  return out
406}
407
408// A steady pseudo-random number in 0..n-1 for a column.
409function scatter(x: number, n: number): number {
410  let hash = Math.imul(x + 1, 2654435761) >>> 0
411  hash ^= hash >>> 15
412  hash = Math.imul(hash, 2246822519) >>> 0
413  hash ^= hash >>> 13
414
415  // The middle bits: the lowest ones repeat in short runs.
416  return ((hash >>> 9) & 0xffff) % n
417}
418
419const BLOCKS = '▁▂▃▄▅▆▇█'
420
421// Back and forth between 0 and `span`, one step a frame.
422function bounce(frame: number, span: number): number {
423  const step = frame % (span * 2)
424
425  return step <= span ? step : span * 2 - step
426}
427
428// A space invader, six pixels wide, in its two poses.
429const INVADER = [
430  ['.#..#.', '######', '#.##.#', '#....#'],
431  ['.#..#.', '######', '#.##.#', '.#..#.'],
432] as const
433
434// "SBS" in Morse, as on and off pixels: a dot is one on, a dash three.
435const MORSE = '1010100011101010100010101000000'
436
437// Conway's Game of Life on the strip, wrapped at its edges: a scattering of
438// cells run for a couple of dozen generations, then a fresh scattering.
439const LIFE_RUN = 24
440const LIFE_FALLBACK = ['..#......##.....', '...#.....##.....', '.###............', '................'].map(row =>
441  [...row].map(cell => cell === '#'),
442)
443
444// The world to draw: one that has died out shows its seed again, and a seed
445// that came up empty shows a fixed pattern, so the strip is never blank.
446export function livingWorld(grid: boolean[][], seed: boolean[][]): boolean[][] {
447  const hasLife = (world: boolean[][]) => world.some(row => row.some(Boolean))
448
449  return hasLife(grid) ? grid : hasLife(seed) ? seed : LIFE_FALLBACK
450}
451
452function lifeAt(frame: number): boolean[][] {
453  const epoch = Math.floor(frame / LIFE_RUN)
454  const seed = Array.from({ length: STRIP_HEIGHT }, (_, y) =>
455    Array.from({ length: STRIP_WIDTH }, (_, x) => scatter(x + y * STRIP_WIDTH + epoch * 64, 3) === 0),
456  )
457
458  let grid = seed
459
460  for (let generation = frame % LIFE_RUN; generation > 0; generation -= 1) {
461    grid = grid.map((row, y) =>
462      row.map((alive, x) => {
463        let near = 0
464
465        for (const dy of [-1, 0, 1]) {
466          for (const dx of [-1, 0, 1]) {
467            if ((dx !== 0 || dy !== 0) && grid[(y + dy + STRIP_HEIGHT) % STRIP_HEIGHT]?.[(x + dx + STRIP_WIDTH) % STRIP_WIDTH]) {
468              near += 1
469            }
470          }
471        }
472
473        return near === 3 || (alive && near === 2)
474      }),
475    )
476  }
477
478  return livingWorld(grid, seed)
479}
480
481export const ANIMATIONS: Readonly<Record<string, (frame: number) => string>> = {
482  // The original two-cell block bouncing along a bar.
483  bar: scanBar,
484  // A sine wave rolling left.
485  wave: frame => strip((x, y, f) => y === Math.round(1.5 + 1.5 * Math.sin((x + f) * 0.6)), frame),
486  // A scanning eye with a fading trail, sweeping side to side.
487  cylon: frame =>
488    strip((x, y, f) => {
489      const span = STRIP_WIDTH - 1
490      const step = f % (span * 2)
491      const head = step <= span ? step : span * 2 - step
492      const gap = Math.abs(x - head)
493
494      return gap === 0 || (gap === 1 && y > 0 && y < 3) || (gap === 2 && y === 2)
495    }, frame),
496  // Drops falling at their own pace, as the digital rain.
497  rain: frame =>
498    strip((x, y, f) => {
499      const drop = (f + scatter(x, 9)) % (STRIP_HEIGHT + 2 + scatter(x + 3, 4))
500
501      return y === drop || y === drop - 1
502    }, frame),
503  // A heartbeat trace travelling along a baseline.
504  pulse: frame =>
505    strip((x, y, f) => {
506      const beat = [2, 1, 0, 3, 2][(x - f) & 15] ?? 2
507
508      return y === beat
509    }, frame),
510  // Two strands twisting round each other.
511  helix: frame =>
512    strip((x, y, f) => {
513      const a = Math.round(1.5 + 1.5 * Math.sin((x + f) * 0.5))
514      const b = Math.round(1.5 - 1.5 * Math.sin((x + f) * 0.5))
515
516      return y === a || y === b
517    }, frame),
518  // A column of pixels filling from the left and draining again.
519  load: frame =>
520    strip((x, y, f) => {
521      const filled = f % (STRIP_WIDTH * 2)
522
523      return filled <= STRIP_WIDTH ? x < filled : x >= filled - STRIP_WIDTH
524    }, frame),
525  // Stars streaming past at different speeds.
526  stars: frame =>
527    strip((x, y, f) => (x + f * (1 + (y & 1)) + y * 5) % (6 + y) === 0, frame),
528  // A ping spreading out from the middle.
529  sonar: frame =>
530    strip((x, y, f) => {
531      const reach = Math.floor(Math.abs(x - 7.5))
532
533      const ring = f % 9
534
535      return (y > 0 && y < 3 && (reach === ring || reach === ring - 4)) || reach === 0
536    }, frame),
537  // Flames flickering along the bottom.
538  fire: frame => strip((x, y, f) => y >= STRIP_HEIGHT - 1 - scatter(x + f * 101, 4), frame),
539  // A comet crossing with a ragged tail.
540  comet: frame =>
541    strip((x, y, f) => {
542      const head = f % 23
543      const behind = head - x
544
545      return (behind === 0 && y > 0 && y < 3) || (behind > 0 && behind < 4 && y === 2) || (behind >= 4 && behind < 8 && y === 2 && (x & 1) === 0)
546    }, frame),
547  // A game of Pong: two paddles tracking a bouncing ball.
548  pong: frame =>
549    strip((x, y, f) => {
550      const ballX = 1 + bounce(f, 13)
551      const ballY = bounce(f, 3)
552      const paddle = Math.min(2, ballY)
553
554      return (x === ballX && y === ballY) || ((x === 0 || x === STRIP_WIDTH - 1) && (y === paddle || y === paddle + 1))
555    }, frame),
556  // A space invader marching side to side.
557  invader: frame =>
558    strip((x, y, f) => {
559      const left = bounce(Math.floor(f / 2), STRIP_WIDTH - 6)
560
561      return INVADER[Math.floor(f / 2) & 1]?.[y]?.[x - left] === '#'
562    }, frame),
563  // Conway's Game of Life, reseeded every couple of dozen generations.
564  life: frame => {
565    const grid = lifeAt(frame)
566
567    return strip((x, y) => grid[y]?.[x] === true, frame)
568  },
569  // Streaks rushing out from the centre: the jump to lightspeed.
570  warp: frame =>
571    strip((x, y, f) => {
572      const reach = Math.floor(Math.abs(x - 7.5))
573      const period = 5 + y
574      const phase = (((reach - f * (1 + (y & 1))) % period) + period) % period
575
576      return phase < (reach > 4 ? 2 : 1)
577    }, frame),
578  // A moon circling a planet.
579  orbit: frame =>
580    strip((x, y, f) => {
581      const moonX = Math.round(7.5 + 7 * Math.cos(f * 0.45))
582      const moonY = Math.round(1.5 + 1.5 * Math.sin(f * 0.45))
583
584      return (x === moonX && y === moonY) || ((x === 7 || x === 8) && y > 0 && y < 3)
585    }, frame),
586  // "SBS" keyed out in Morse, scrolling past.
587  morse: frame => strip((x, y, f) => y > 0 && y < 3 && MORSE[(x + f) % MORSE.length] === '1', frame),
588  // A shield wall pushing out from the centre.
589  shield: frame =>
590    strip((x, y, f) => {
591      const reach = Math.floor(Math.abs(x - 7.5))
592      const edge = f % 9
593
594      return reach === edge || (reach < edge && (y === 0 || y === STRIP_HEIGHT - 1))
595    }, frame),
596  // Ones and zeroes streaming by.
597  binary: frame => Array.from({ length: STRIP_CELLS }, (_, cell) => (scatter(cell + frame, 2) === 0 ? '0' : '1')).join(''),
598  // Static: a burst of noise characters.
599  glitch: frame => Array.from({ length: STRIP_CELLS }, (_, cell) => (scatter(cell * 3 + frame, 5) === 0 ? ' ' : noiseAt(frame, cell))).join(''),
600  // Chevrons locking one after another.
601  dial: frame => Array.from({ length: STRIP_CELLS }, (_, cell) => (cell < (Math.floor(frame / 2) % (STRIP_CELLS + 2)) ? '◆' : '◇')).join(''),
602  // An equaliser of block bars.
603  eq: frame =>
604    Array.from({ length: STRIP_CELLS }, (_, x) => {
605      const level = Math.abs(Math.sin(frame * 0.45 + x * 1.3) * Math.cos(frame * 0.17 + x * 0.7))
606
607      return BLOCKS[Math.min(BLOCKS.length - 1, Math.floor(level * BLOCKS.length))] ?? '▁'
608    }).join(''),
609}
610
611// In `auto`, a phrase gets a themed animation only where its own words call
612// for one: rain for the digital rain, a scanning eye for a scan, stars for a
613// jump. Every other phrase keeps the plain bar. The first rule that matches
614// wins.
615export const AUTO = 'auto'
616
617const THEMES: readonly (readonly [string, RegExp])[] = [
618  ['rain', /\brain\b|Seeing the code/i],
619  ['invader', /\bbugs?\b|Mobile Infantry/i],
620  ['dial', /Dialing|chevron/i],
621  ['shield', /^Raising (shields|the Holtzman shield|the attack barrier)/i],
622  ['warp', /lightspeed|Punching it|Kessel|space fold|Folding space|Improbability|88 miles|Jumping the fleet|through time|Adama Maneuver/i],
623  ['comet', /tightbeam|Death Star plans|^Beaming|Needlecasting|Farcasting|^Firing the (beam rifle|main gun|PDCs)/i],
624  ['fire', /^(Lighting|Burning)\b|reactor|heresy/i],
625  ['sonar', /Pinging|motion tracker|Sweeping the ports|Probing|tricorder|Jedi archives/i],
626  ['morse', /^(Hailing|Transmitting|Broadcasting)\b|hailing frequencies|recognition codes|Opening the uplink|^Uplinking|Tycho Station/i],
627  ['binary', /Decrypting|cipher|Decoding the transmission|Hacking|Slicing|\bICE\b|Breach Protocol|Kuang|UNIX|^Executing the quickhack|Breaching the attack barrier/i],
628  ['glitch', /Jacking|the Grid|Metaverse|cyberspace|Black Sun|Diving the net|Minovsky/i],
629  ['stars', /Plotting the burn|Plotting a course|Calculating the jump|jump coordinates|way to Earth|times faster/i],
630  ['life', /Computing|computations|Calculating|psychohistory|Prime Radiant/i],
631  ['orbit', /docking|the colony/i],
632  ['cylon', /Cylon|\bHUD\b|Sarah Connor|Terminating|Scanning|Voight-Kampff|baseline test/i],
633  ['load', /^(Loading|Reloading|Booting|Uploading|Compiling|Spooling|Priming|Charging)\b|matter compiler/i],
634  ['wave', /sandworm|the worm|deep desert|Deep diving|Surfacing|\bspice\b/i],
635  ['helix', /sleeve|cortical stack|neurachem|protoculture|neural handshake|sync ratio|Newtype|the Drift/i],
636  ['pulse', /^(Handshaking|Listening)\b|Phoning home|ansible|thumper/i],
637  ['eq', /Overclocking|Rerouting power|Reversing the polarity|Minmei|with the Voice/i],
638]
639
640export function animationFor(choice: string, phrase: string): string {
641  if (choice !== AUTO) {
642    return choice
643  }
644
645  return THEMES.find(([, pattern]) => pattern.test(phrase))?.[0] ?? 'bar'
646}
647

1export type SpinnerTick = number
2
3declare module 'claude-code' {
4  interface PluginState {
5    'sbs-deck': { spinnerTick: SpinnerTick }
6  }
7}
8