auto-review

  on('ui.render', { component: 'AbovePrompt' }, async ($, e, next) => {
    if (e.props.hasSurvey || e.props.view.agentId !== undefined) return next(e)
    const current = await read($, reviewAtom)
    if (current === null) return next(e)
    const { Box, Text, Button } = $.ui.resolve(e)
    const below = await next(e)
    const key = 'auto-review-status'
    const icon = REVIEW_ICON
    const row: BandRow =
      current.status === 'running'
        ? { key, tone: 'active', icon, title: 'Review', text: `reviewing ${plural(current.files.length, 'file')}…` }
        : current.status === 'lgtm'
          ? { key, tone: 'done', icon, title: 'Review', text: 'LGTM' }
          : current.status === 'failed'
            ? { key, tone: 'error', icon, title: 'Review', text: `failed (${current.error})` }
            : {
                key,
                tone: 'warn',
                icon,
                title: 'Review',
                text: plural(current.findings.length, 'finding'),
                actions: [
                  { key: 'auto-review-view', hotkey: 'v', label: 'View', isQuiet: true, onPress: () => void view($) },
                  { key: 'auto-review-fix', hotkey: 'f', isPrimary: true, label: 'Fix them', onPress: () => void fix($) },
                  { key: 'auto-review-dismiss', hotkey: 'd', label: 'Dismiss', isQuiet: true, isDismiss: true, onPress: () => void clear($) },
                ],
              }
    return band({ Box, Text, Button } as unknown as BandMake, [row], e.props.bodyColumns, below, modeFor(e.surface))
  })

export function band(make: BandMake, rows: readonly BandRow[], columns: number, below?: RenderElement | null, glyphs: BandGlyphs = 'full'): RenderElement {
  const drawn = rows.map(r => bandRow(make, r, columns, glyphs))
  return make.Box({ flexDirection: 'column', children: isNothing(below) ? drawn : [...drawn, below as RenderElement] })
}

export function bandRow(make: BandMake, row: BandRow, columns: number, glyphs: BandGlyphs = 'full'): RenderElement {
  const tone = TONES[row.tone]
  const mark = glyphs === 'full' && row.icon ? row.icon[0] : tone.glyph
  const actions = row.actions ?? []
  const buttons = actions.reduce((n, a) => n + buttonWidth(a) + 1, 0)
  // a full icon (an emoji, say) may take two cells
  const markWidth = glyphs === 'full' && row.icon ? 3 : 2
  const head = row.title ? row.title.length + 3 : 0
  const tail = row.note ? row.note.length + 3 : 0
  const isStacked = actions.length > 0 && columns - markWidth - buttons - head - tail < 24
  const lines = Math.max(1, row.maxLines ?? 2)
  // the first line shares its width with the glyph, the title, the note and (beside it) the buttons; the others have it all
  const firstLine = Math.max(10, columns - markWidth - (isStacked ? 0 : buttons) - head - tail)
  const room = firstLine + (lines - 1) * Math.max(10, columns - markWidth)
  const children: RenderElement[] = []
  if (row.title) children.push(make.Text({ bold: true, children: [row.title] }), make.Text({ dimColor: true, children: [' · '] }))
  children.push(make.Text({ children: [clipText(row.text, room)] }))
  if (row.note) children.push(make.Text({ dimColor: true, children: [` · ${row.note}`] }))
  const glyph = make.Text({ color: tone.color, bold: true, children: [mark] })
  const text = make.Box({ flexShrink: 1, flexGrow: 1, children: [make.Text({ wrap: 'wrap', children })] })
  const drawn = actions.map(a =>
    make.Button({
      key: a.key,
      label: a.label,
      ...(a.hotkey ? { hotkey: a.hotkey } : {}),
      ...(a.isPrimary ? { variant: 'primary' } : {}),
      ...(a.isQuiet ? { dimColor: true } : {}),
      ...(a.isDismiss ? { role: 'dismiss' } : {}),
      onPress: a.onPress,
    }),
  )
  if (!isStacked) return make.Box({ key: row.key, flexDirection: 'row', columnGap: 1, children: [glyph, text, ...drawn] })
  return make.Box({
    key: row.key,
    flexDirection: 'column',
    children: [
      make.Box({ flexDirection: 'row', columnGap: 1, children: [glyph, text] }),
      make.Box({ flexDirection: 'row', flexWrap: 'wrap', columnGap: 1, paddingLeft: 2, children: drawn }),
    ],
  })
}

  on('ui.render', { component: 'Pane', requestId: PANE }, async ($, e) => {
    const { Box, Text, Button, Markdown } = $.ui.resolve(e)
    const current = await read($, reviewAtom)
    const close = <Button key="close" hotkey="x" role="dismiss" label="Close" onPress={() => void $.ui.close({ id: PANE })} />
    if (current === null) {
      return (
        <Box flexDirection="column">
          <Text dimColor>No review to show. A review runs after each turn that edits files, and clears with your next prompt.</Text>
          <Box marginTop={1}>{close}</Box>
        </Box>
      )
    }
    const facts = [plural(current.files.length, 'file'), `${current.changedLines} changed lines`, current.model, ...(current.usd > 0 ? [fmtUsd(current.usd)] : [])]
    return (
      <Box flexDirection="column">
        <Text bold>{`Review · ${facts.join(' · ')}`}</Text>
        <Text dimColor wrap="truncate-end">
          {current.files.join(', ')}
        </Text>
        <Box marginTop={1} flexDirection="column">
          {current.status === 'findings' ? (
            <Markdown text={current.findings.map(finding => `- ${finding}`).join('\n')} />
          ) : current.status === 'lgtm' ? (
            <Text color="green">LGTM: nothing worth fixing.</Text>
          ) : current.status === 'failed' ? (
            <Text color="red">{`The review failed: ${current.error}`}</Text>
          ) : (
            <Text dimColor>Reviewing…</Text>
          )}
        </Box>
        <Box gap={1} marginTop={1}>
          {current.status === 'findings' && <Button key="fix" hotkey="f" variant="primary" label="Fix them" onPress={() => void fix($)} />}
          {close}
        </Box>
      </Box>
    )
  })