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/**
* Decision-point timing notice for the Start-Practice modal (#157).
*
* When the pace estimate the modal is showing may be distorted by flagged
* timings (Tier-1 auto-quarantined and/or Tier-2 unusual-for-child), this
* renders a NOTICEABLE, parent-facing banner directly under the "~N problems"
* summary so a normal parent/teacher will actually see it — not a buried admin
* list. It taps through to the single review destination
* (`/practice/{studentId}/review-timings`, optionally focused on the one
* affected session).
*
* Counts come straight from `PaceAssessment` (the single pace producer) — there
* is no second counting mechanism here. The presentational `TimingDataNoticeView`
* is a pure function of those counts so it can be unit-tested without the modal
* provider; `TimingDataNotice` is the thin container that reads them off context.
*/
import Link from 'next/link'
import { useTheme } from '@/contexts/ThemeContext'
import type { AffectedSession } from '@/lib/curriculum/timing/pace-estimation'
import { css } from '../../../../styled-system/css'
import { useStartPracticeModal } from '../StartPracticeModalContext'
/** Pick singular/plural form based on a count. */
function plural(count: number, singular: string, pluralForm: string): string {
return count === 1 ? singular : pluralForm
}
export interface TimingDataNoticeViewProps {
studentId: string
/** Flagged (Tier-1/Tier-2) attempts with no review yet — the gate for showing anything. */
unresolvedCount: number
tier1Count: number
tier2Count: number
/** The "~N problems" the modal currently shows (for the "instead of" comparison). */
estimatedProblems: number
/** The "~M problems" the estimate would become if the flagged timings were repaired. */
estimatedProblemsIfRepaired: number | null
/** Sessions containing flagged attempts (worst first) — drives single-session focus. */
affectedSessions: readonly AffectedSession[]
isDark: boolean
}
/**
* Pure presentation of the timing notice. Renders nothing when there is nothing
* unresolved to surface. Amber + prominent when genuine-but-unusual (Tier-2)
* timings are still counted in the estimate; neutral when only broken (Tier-1)
* measurements were auto-quarantined (the estimate is already protected).
*/
export function TimingDataNoticeView({
studentId,
unresolvedCount,
tier1Count,
tier2Count,
estimatedProblems,
estimatedProblemsIfRepaired,
affectedSessions,
isDark,
}: TimingDataNoticeViewProps) {
if (unresolvedCount <= 0) return null
// One affected session → focus it; otherwise open the full review list.
const reviewHref =
affectedSessions.length === 1
? `/practice/${studentId}/review-timings?session=${affectedSessions[0].sessionId}`
: `/practice/${studentId}/review-timings`
const hasTier2 = tier2Count > 0
const showRepairPreview =
hasTier2 &&
estimatedProblemsIfRepaired != null &&
estimatedProblemsIfRepaired !== estimatedProblems
// Colors: amber attention vs neutral "already protected".
const accent = hasTier2
? isDark
? { bg: 'rgba(120, 53, 15, 0.35)', border: 'rgba(245, 158, 11, 0.45)', text: '#fcd34d', body: '#fde68a', link: '#fbbf24' }
: { bg: '#fffbeb', border: '#fcd34d', text: '#92400e', body: '#b45309', link: '#b45309' }
: isDark
? { bg: 'rgba(30, 41, 59, 0.6)', border: 'rgba(148, 163, 184, 0.3)', text: '#cbd5e1', body: '#94a3b8', link: '#93c5fd' }
: { bg: '#f8fafc', border: '#e2e8f0', text: '#334155', body: '#64748b', link: '#2563eb' }
return (
<div
data-component="timing-data-notice"
data-tier={hasTier2 ? 'tier2' : 'tier1'}
data-flag-count={unresolvedCount}
className={css({
display: 'flex',
alignItems: 'flex-start',
gap: '0.625rem',
padding: '0.75rem 0.875rem',
borderRadius: '10px',
border: '1px solid',
'@media (max-width: 480px), (max-height: 700px)': {
padding: '0.5rem 0.625rem',
gap: '0.5rem',
},
})}
style={{ backgroundColor: accent.bg, borderColor: accent.border }}
>
<span
data-element="notice-icon"
aria-hidden="true"
className={css({ fontSize: '1rem', lineHeight: 1.3, flexShrink: 0 })}
>
{hasTier2 ? '⚠️' : '🛡️'}
</span>
<div
className={css({
display: 'flex',
flexDirection: 'column',
gap: '0.25rem',
minWidth: 0,
flex: 1,
})}
>
{hasTier2 ? (
<>
<span
data-element="notice-headline"
className={css({
fontSize: '0.8125rem',
fontWeight: '600',
lineHeight: 1.35,
'@media (max-width: 480px), (max-height: 700px)': { fontSize: '0.75rem' },
})}
style={{ color: accent.text }}
>
This estimate may be affected by {tier2Count} unusually long{' '}
{plural(tier2Count, 'timing', 'timings')}.
</span>
{showRepairPreview && (
<span
data-element="notice-repair-preview"
className={css({ fontSize: '0.75rem', lineHeight: 1.4 })}
style={{ color: accent.body }}
>
If those were interruptions, this session would hold about{' '}
<strong data-value="repaired-problem-count">{estimatedProblemsIfRepaired}</strong>{' '}
problems instead of{' '}
<strong data-value="current-problem-count">{estimatedProblems}</strong>.
</span>
)}
{tier1Count > 0 && (
<span
data-element="notice-tier1-note"
className={css({ fontSize: '0.6875rem', lineHeight: 1.4 })}
style={{ color: accent.body }}
>
{tier1Count} broken {plural(tier1Count, 'measurement', 'measurements')}{' '}
{plural(tier1Count, 'was', 'were')} already set aside automatically.
</span>
)}
</>
) : (
<span
data-element="notice-headline"
className={css({
fontSize: '0.8125rem',
fontWeight: '500',
lineHeight: 1.35,
'@media (max-width: 480px), (max-height: 700px)': { fontSize: '0.75rem' },
})}
style={{ color: accent.text }}
>
{tier1Count} broken timing {plural(tier1Count, 'measurement', 'measurements')}{' '}
{plural(tier1Count, 'was', 'were')} set aside automatically, so this estimate is
protected.
</span>
)}
<Link
href={reviewHref}
data-action="review-timings"
className={css({
alignSelf: 'flex-start',
marginTop: '0.125rem',
fontSize: '0.75rem',
fontWeight: '600',
textDecoration: 'none',
borderRadius: '4px',
_hover: { textDecoration: 'underline' },
_focusVisible: {
outline: '2px solid currentColor',
outlineOffset: '2px',
},
})}
style={{ color: accent.link }}
>
{hasTier2 ? 'Review timings →' : 'Review →'}
</Link>
</div>
</div>
)
}
/**
* Quiet, always-available entry to the review tool. Shown in the modal when
* there is timing history but nothing currently needs review, so a parent can
* *proactively* open the tool — not only when a flag is nagging them. (The
* prominent {@link TimingDataNoticeView} takes over whenever something is
* actually unresolved.)
*/
export function ReviewTimingsQuietLink({
studentId,
isDark,
}: {
studentId: string
isDark: boolean
}) {
return (
<Link
href={`/practice/${studentId}/review-timings`}
data-component="review-timings-quiet-link"
data-action="review-timings"
className={css({
alignSelf: 'flex-start',
display: 'inline-flex',
alignItems: 'center',
gap: '0.375rem',
fontSize: '0.75rem',
fontWeight: '500',
textDecoration: 'none',
borderRadius: '4px',
_hover: { textDecoration: 'underline' },
_focusVisible: { outline: '2px solid currentColor', outlineOffset: '2px' },
})}
style={{ color: isDark ? '#94a3b8' : '#64748b' }}
>
<span aria-hidden="true">⏱</span> Review timing data →
</Link>
)
}
/** Container: reads the pace assessment + estimates off the modal context. */
export function TimingDataNotice() {
const { resolvedTheme } = useTheme()
const isDark = resolvedTheme === 'dark'
const { studentId, paceAssessment, estimatedProblems, estimatedProblemsIfRepaired } =
useStartPracticeModal()
if (!paceAssessment) return null
// Nothing needs review right now → a quiet, always-available link (proactive
// discovery), but only when there's timing history worth opening the tool for
// (avoids a dead-end link for a brand-new student with no attempts yet).
if (paceAssessment.unresolvedCount <= 0) {
if (paceAssessment.sampleCount <= 0) return null
return <ReviewTimingsQuietLink studentId={studentId} isDark={isDark} />
}
return (
<TimingDataNoticeView
studentId={studentId}
unresolvedCount={paceAssessment.unresolvedCount}
tier1Count={paceAssessment.tier1Count}
tier2Count={paceAssessment.tier2Count}
estimatedProblems={estimatedProblems}
estimatedProblemsIfRepaired={estimatedProblemsIfRepaired}
affectedSessions={paceAssessment.affectedSessions}
isDark={isDark}
/>
)
}
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