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import * as HoverCard from '@radix-ui/react-hover-card'
import { useTranslations } from 'next-intl'
import type React from 'react'
import { useMemo, useState } from 'react'
import type { TermProvenance, UnifiedStepData } from '../../utils/unifiedStepGenerator'
import type { PedagogicalRule, PedagogicalSegment, TermReason } from './DecompositionWithReasons'
import './reason-tooltip.css'
// Helper hook to safely access TutorialUI context
// Check if TutorialUI module is available at module load time
let useTutorialUIImport: (() => any) | null = null
try {
const module = require('./TutorialUIContext')
useTutorialUIImport = module.useTutorialUI
} catch {
// TutorialUI context not available
}
function useTutorialUIGate() {
if (useTutorialUIImport) {
// eslint-disable-next-line react-hooks/rules-of-hooks
return useTutorialUIImport()
}
// Return a fallback that allows all focus requests (non-tutorial context)
return {
requestFocus: () => true,
releaseFocus: () => {},
hintFocus: 'none' as const,
}
}
interface ReasonTooltipProps {
children: React.ReactNode
termIndex: number
segment?: PedagogicalSegment
reason?: TermReason
originalValue?: string
steps?: UnifiedStepData[]
provenance?: TermProvenance // NEW: Provenance data for enhanced tooltips
}
// Fallback utility for legacy support
function _getPlaceName(place: number): string {
const names = ['ones', 'tens', 'hundreds', 'thousands', 'ten-thousands']
return names[place] || `10^${place}`
}
export function ReasonTooltip({
children,
termIndex,
segment,
reason,
originalValue,
steps,
provenance,
}: ReasonTooltipProps) {
// All hooks must be called before early return
const [showBeadDetails, setShowBeadDetails] = useState(false)
const [showMath, setShowMath] = useState(false)
const [showDetails, setShowDetails] = useState(false)
const [isOpen, setIsOpen] = useState(false)
const ui = useTutorialUIGate()
const t = useTranslations('tutorial.reasonTooltip')
const rule = reason?.rule ?? segment?.plan[0]?.rule
// Use readable format from segment, enhanced with provenance
const readable = segment?.readable
const enhancedContent = useMemo(() => {
if (!provenance) return null
if (rule === 'Direct') {
const rodChip = readable?.chips.find((c) => /^(this )?rod shows$/i.test(c.label))
return {
title: t('directTitle', {
place: provenance.rhsPlaceName,
digit: provenance.rhsDigit,
value: provenance.rhsValue,
}),
subtitle: t('directSubtitle', { addend: provenance.rhs }),
chips: [
{
label: t('digitChip'),
value: `${provenance.rhsDigit} (${provenance.rhsPlaceName})`,
},
...(rodChip ? [{ label: t('rodChip'), value: rodChip.value }] : []),
{
label: t('addHereChip'),
value: `+${provenance.rhsDigit} ${provenance.rhsPlaceName} → ${provenance.rhsValue}`,
},
],
}
}
if (readable) {
const subtitleParts = [
readable.subtitle,
t('subtitleContext', {
addend: provenance.rhs,
place: provenance.rhsPlaceName,
digit: provenance.rhsDigit,
}),
].filter(Boolean)
return {
title: readable.title,
subtitle: subtitleParts.join(' • '),
chips: [
{
label: t('sourceDigit'),
value: `${provenance.rhsDigit} from ${provenance.rhs} (${provenance.rhsPlaceName} place)`,
},
...readable.chips,
],
}
}
return null
}, [provenance, readable, rule, t])
const ruleInfo = useMemo(() => {
switch (rule) {
case 'Direct':
return {
emoji: '✨',
name: t('ruleInfo.Direct.name'),
description: t('ruleInfo.Direct.description'),
color: 'green',
}
case 'FiveComplement':
return {
emoji: '🤝',
name: t('ruleInfo.FiveComplement.name'),
description: t('ruleInfo.FiveComplement.description'),
color: 'blue',
}
case 'TenComplement':
return {
emoji: '🔟',
name: t('ruleInfo.TenComplement.name'),
description: t('ruleInfo.TenComplement.description'),
color: 'purple',
}
case 'Cascade':
return {
emoji: '🌊',
name: t('ruleInfo.Cascade.name'),
description: t('ruleInfo.Cascade.description'),
color: 'orange',
}
default:
return {
emoji: '💭',
name: t('ruleInfo.Fallback.name'),
description: t('ruleInfo.Fallback.description'),
color: 'gray',
}
}
}, [rule, t])
const fromPrefix = t('fromPrefix')
if (!rule) {
return <>{children}</>
}
const contentClasses = `reason-tooltip reason-tooltip--${ruleInfo.color}`
const tooltipId = `tooltip-${termIndex}`
const handleOpenChange = (open: boolean) => {
if (open) {
const granted = ui.requestFocus('term')
if (granted) {
setIsOpen(true)
}
} else {
ui.releaseFocus('term')
setIsOpen(false)
}
}
return (
<HoverCard.Root open={isOpen} onOpenChange={handleOpenChange} openDelay={150} closeDelay={400}>
<HoverCard.Trigger asChild>
<span aria-describedby={`${tooltipId}-description`}>{children}</span>
</HoverCard.Trigger>
<HoverCard.Portal>
<HoverCard.Content
id={tooltipId}
className={contentClasses}
sideOffset={8}
side="top"
align="center"
>
<div className="reason-tooltip__content">
<div className="reason-tooltip__header">
<span className="reason-tooltip__emoji">{ruleInfo.emoji}</span>
<div className="reason-tooltip__title">
<h4 className="reason-tooltip__name">
{enhancedContent?.title || readable?.title || ruleInfo.name}
</h4>
<p id={`${tooltipId}-description`} className="reason-tooltip__description">
{enhancedContent?.subtitle || readable?.subtitle || ruleInfo.description}
</p>
</div>
</div>
{/* Primary, concise explanation */}
{segment?.readable?.summary && (
<div className="reason-tooltip__summary">
<p className="reason-tooltip__explanation-text">{segment.readable.summary}</p>
</div>
)}
{/* Optional provenance nudge (avoid duplicating subtitle) */}
{provenance &&
!(enhancedContent?.subtitle || readable?.subtitle || '').includes(
`${fromPrefix} `
) && (
<div className="reason-tooltip__reasoning">
<p className="reason-tooltip__explanation-text">
{t('reasoning', {
addend: provenance.rhs,
place: provenance.rhsPlaceName,
digit: provenance.rhsDigit,
})}
</p>
</div>
)}
{/* More details disclosure for optional content */}
{((enhancedContent?.chips || readable?.chips)?.length ||
readable?.carryPath ||
readable?.showMath ||
(readable && readable.stepsFriendly.length > 1)) && (
<div className="reason-tooltip__details">
<button
className="reason-tooltip__details-toggle"
onClick={() => setShowDetails(!showDetails)}
aria-expanded={showDetails}
aria-controls={`${tooltipId}-details`}
type="button"
>
<span className="reason-tooltip__details-label">
{t('details.toggle')}
<span
className="reason-tooltip__chevron"
style={{
transform: showDetails ? 'rotate(180deg)' : 'rotate(0deg)',
}}
>
▼
</span>
</span>
</button>
{showDetails && (
<div id={`${tooltipId}-details`} className="reason-tooltip__details-content">
{/* Context chips */}
{(enhancedContent?.chips || readable?.chips)?.length ? (
<div className="reason-tooltip__context">
<dl className="reason-tooltip__chips">
{(enhancedContent?.chips || readable?.chips || []).map((chip, index) => (
<div key={index} className="reason-tooltip__chip">
<dt>{chip.label}</dt>
<dd>{chip.value}</dd>
</div>
))}
</dl>
</div>
) : null}
{/* Carry path only when it's interesting (cascades) */}
{segment?.plan?.some((p) => p.rule === 'Cascade') && readable?.carryPath && (
<div className="reason-tooltip__carry-path">
<p className="reason-tooltip__carry-description">
<strong>{t('details.carryPath')}</strong> {readable.carryPath}
</p>
</div>
)}
{/* Math toggle */}
{readable?.showMath && (
<div className="reason-tooltip__advanced">
<button
className="reason-tooltip__math-toggle"
onClick={() => setShowMath(!showMath)}
aria-expanded={showMath}
type="button"
>
<span className="reason-tooltip__math-label">
{t('details.showMath')}
<span
className="reason-tooltip__chevron"
style={{
transform: showMath ? 'rotate(180deg)' : 'rotate(0deg)',
}}
>
▼
</span>
</span>
</button>
{showMath && (
<div className="reason-tooltip__math-content">
{readable.showMath.lines.map((line, index) => (
<p key={index} className="reason-tooltip__math-line">
{line}
</p>
))}
</div>
)}
</div>
)}
{/* Step-by-step breakdown */}
{readable && readable.stepsFriendly.length > 1 && (
<div className="reason-tooltip__steps">
<button
className="reason-tooltip__expand-button"
onClick={() => setShowBeadDetails(!showBeadDetails)}
onKeyDown={(e) => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault()
setShowBeadDetails(!showBeadDetails)
}
}}
aria-expanded={showBeadDetails}
aria-controls={`${tooltipId}-steps`}
type="button"
>
<span className="reason-tooltip__section-title">
{t('details.steps')}
<span
className="reason-tooltip__chevron"
style={{
transform: showBeadDetails ? 'rotate(180deg)' : 'rotate(0deg)',
}}
>
▼
</span>
</span>
</button>
{showBeadDetails && (
<ol id={`${tooltipId}-steps`} className="reason-tooltip__step-list">
{readable.stepsFriendly.map((stepInstruction, idx) => (
<li key={idx} className="reason-tooltip__step">
<span className="reason-tooltip__step-instruction">
{stepInstruction}
</span>
</li>
))}
</ol>
)}
</div>
)}
</div>
)}
</div>
)}
{/* Dev-only validation hint */}
{process.env.NODE_ENV !== 'production' &&
segment?.readable?.validation &&
!segment.readable.validation.ok && (
<div className="reason-tooltip__dev-warn">
{t('devWarning', {
issues: segment.readable.validation.issues.join('; '),
})}
</div>
)}
{/* Original transformation shown at bottom */}
{originalValue && segment?.expression && (
<div className="reason-tooltip__formula">
<div className="reason-tooltip__expansion">
<span className="reason-tooltip__original">{originalValue}</span>
<span className="reason-tooltip__arrow">→</span>
<code className="reason-tooltip__expanded">{segment.expression}</code>
</div>
<div className="reason-tooltip__label">
{t('formula', {
original: originalValue,
expanded: segment.expression,
})}
</div>
</div>
)}
</div>
<HoverCard.Arrow className="reason-tooltip__arrow" />
</HoverCard.Content>
</HoverCard.Portal>
</HoverCard.Root>
)
}
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