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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 | 'use client' import { useState, type CSSProperties } from 'react' import type { WordProblem, AnnotatedSpan, AnnotationTag } from '../wordProblems/types' import type { ChallengePhase, CardPlacement } from './types' import { KidNumberInput, useKidNumberInput, type FeedbackState } from '../../../ui/KidNumberInput' import { useIsTouchDevice, useHasPhysicalKeyboard } from '../../../../hooks/useDeviceCapabilities' /** Colors for annotation underlines, keyed by tag */ const TAG_COLORS: Partial<Record<AnnotationTag, string>> = { slope: '#f59e0b', // amber intercept: '#3b82f6', // blue target: '#ef4444', // red answer: '#10b981', // emerald point1: '#8b5cf6', // violet point2: '#ec4899', // pink x_unit: '#6b7280', // gray y_unit: '#6b7280', // gray } /** Difficulty dots — like a password strength indicator */ function DifficultyDots({ level }: { level: number }) { return ( <div data-element="difficulty-dots" style={{ display: 'flex', gap: 3, alignItems: 'center' }}> {[1, 2, 3, 4, 5].map((i) => ( <div key={i} style={{ width: 6, height: 6, borderRadius: '50%', background: i <= level ? 'rgba(245, 158, 11, 0.8)' : 'rgba(148, 163, 184, 0.3)', }} /> ))} </div> ) } interface WordProblemCardProps { problem: WordProblem phase: ChallengePhase placement: CardPlacement revealStep: number isDark: boolean onNewProblem: () => void onDismiss: () => void onAnswerCorrect?: () => void } export function WordProblemCard({ problem, phase, placement, revealStep, isDark, onNewProblem, onDismiss, onAnswerCorrect, }: WordProblemCardProps) { const isRevealing = phase === 'revealing' || phase === 'revealed' const isCelebrating = phase === 'celebrating' // Compute which tags are revealed so far const revealedTags = new Set<AnnotationTag>() if (isRevealing) { const annotatedSpans = problem.spans.filter( (s) => s.tag && s.tag !== 'context' && s.tag !== 'question' ) for (let i = 0; i < Math.min(revealStep, annotatedSpans.length); i++) { if (annotatedSpans[i].tag) revealedTags.add(annotatedSpans[i].tag!) } } // Slide-in animation const slideFrom = getSlideDirection(placement.position) const isVisible = phase !== 'auto-adjusting' const bgColor = isDark ? 'rgba(30, 41, 59, 0.92)' : 'rgba(255, 255, 255, 0.92)' const textColor = isDark ? '#e2e8f0' : '#1e293b' const borderColor = isDark ? 'rgba(71, 85, 105, 0.5)' : 'rgba(203, 213, 225, 0.8)' const mutedColor = isDark ? 'rgba(148, 163, 184, 0.7)' : 'rgba(100, 116, 139, 0.7)' return ( <div data-component="word-problem-card" style={{ position: 'absolute', ...placement.style, maxWidth: 360, minWidth: 240, padding: '14px 16px', borderRadius: 12, background: bgColor, backdropFilter: 'blur(12px)', border: `1px solid ${borderColor}`, color: textColor, fontSize: 14, lineHeight: 1.6, fontFamily: 'system-ui, sans-serif', zIndex: 50, boxShadow: isCelebrating ? `0 0 20px rgba(245, 158, 11, 0.4), 0 4px 16px rgba(0,0,0,0.2)` : '0 4px 16px rgba(0,0,0,0.15)', transform: isVisible ? 'translateY(0)' : `translateY(${slideFrom})`, opacity: isVisible ? 1 : 0, transition: 'transform 300ms ease-out, opacity 300ms ease-out, box-shadow 300ms ease', pointerEvents: 'auto', }} > {/* Header row */} <div data-element="card-header" style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 8, }} > <DifficultyDots level={problem.difficulty} /> <button data-action="dismiss-problem" onClick={onDismiss} style={{ background: 'none', border: 'none', color: mutedColor, cursor: 'pointer', fontSize: 16, padding: '0 2px', lineHeight: 1, }} > × </button> </div> {/* Problem text with annotations */} <div data-element="problem-text" style={{ marginBottom: 12 }}> {problem.spans.map((span, i) => ( <AnnotatedTextSpan key={i} span={span} isRevealed={span.tag ? revealedTags.has(span.tag) : false} isRevealing={isRevealing} phase={phase} /> ))} </div> {/* Axis labels */} <div data-element="axis-labels" style={{ fontSize: 11, color: mutedColor, marginBottom: 10, }} > x-axis: {problem.axisLabels.x} · y-axis: {problem.axisLabels.y} </div> {/* Footer */} {(phase === 'revealed' || phase === 'idle') && ( <button data-action="new-problem" onClick={onNewProblem} style={{ background: isDark ? 'rgba(59, 130, 246, 0.2)' : 'rgba(59, 130, 246, 0.1)', border: `1px solid ${isDark ? 'rgba(59, 130, 246, 0.3)' : 'rgba(59, 130, 246, 0.2)'}`, color: isDark ? '#93c5fd' : '#2563eb', borderRadius: 6, padding: '5px 12px', fontSize: 12, fontWeight: 500, cursor: 'pointer', fontFamily: 'system-ui, sans-serif', }} > New Problem </button> )} {/* Solving phase hint */} {phase === 'solving' && ( <div data-element="solving-hint" style={{ fontSize: 11, color: mutedColor, fontStyle: 'italic' }} > Position the ruler to match this equation </div> )} {/* Answering phase: ask for x count using KidNumberInput */} {phase === 'answering' && <AnswerInput problem={problem} onCorrect={onAnswerCorrect} />} </div> ) } /** Sub-component for the answering phase — uses KidNumberInput with auto-validation */ function AnswerInput({ problem, onCorrect }: { problem: WordProblem; onCorrect?: () => void }) { const [feedback, setFeedback] = useState<FeedbackState>('none') const isTouchDevice = useIsTouchDevice() const hasPhysicalKeyboard = useHasPhysicalKeyboard() const showKeypad = isTouchDevice && hasPhysicalKeyboard !== true const [answered, setAnswered] = useState(false) const { state, actions } = useKidNumberInput({ correctAnswer: problem.answer.x, clearOnCorrect: false, onCorrect: () => { setFeedback('correct') setAnswered(true) setTimeout(() => onCorrect?.(), 1200) }, onIncorrect: () => { setFeedback('incorrect') setTimeout(() => setFeedback('none'), 400) }, }) return ( <div data-element="answer-input-section" style={{ display: 'flex', flexDirection: 'column', gap: 8, alignItems: 'center', }} > <div data-element="answer-prompt" style={{ fontSize: 13, fontWeight: 500, textAlign: 'center' }} > {problem.emoji} How many {problem.axisLabels.x}? </div> <KidNumberInput value={state.value} onDigit={actions.addDigit} onBackspace={actions.backspace} feedback={feedback} disabled={answered} showKeypad={showKeypad && !answered} keypadMode="inline" displaySize="sm" /> </div> ) } const HOVER_PHASES = new Set<ChallengePhase>(['presenting', 'solving', 'answering']) function AnnotatedTextSpan({ span, isRevealed, isRevealing, phase, }: { span: AnnotatedSpan isRevealed: boolean isRevealing: boolean phase: ChallengePhase }) { const [isHovered, setIsHovered] = useState(false) const color = span.tag ? TAG_COLORS[span.tag] : undefined const showUnderline = isRevealing && isRevealed && color const canHover = color && HOVER_PHASES.has(phase) const showHover = canHover && isHovered const style: CSSProperties = { borderBottom: showUnderline ? `2px solid ${color}` : showHover ? `2px solid ${color}` : undefined, paddingBottom: showUnderline || showHover ? 1 : undefined, transition: isHovered ? 'all 150ms ease-out' : 'all 400ms ease', ...(showHover && { backgroundColor: `${color}26`, borderRadius: 3, cursor: 'help', }), } return ( <span style={style} onPointerEnter={canHover ? () => setIsHovered(true) : undefined} onPointerLeave={canHover ? () => setIsHovered(false) : undefined} > {span.text} </span> ) } function getSlideDirection(position: CardPlacement['position']): string { switch (position) { case 'top-left': case 'top-right': return '-20px' case 'bottom-left': case 'bottom-right': return '20px' } } |