examples/stackoverflow/src/components/question-detail.tsx tsx Copy
/** @jsxImportSource @kovojs/server */ import { safeRichHtml } from '@kovojs/browser' ; import { component, type ComponentChild } from '@kovojs/core' ; import { Defer } from '@kovojs/server' ; import * as style from '@kovojs/style' ; import { postAnswerMutation } from '../mutations.js' ; import { questionAnswers, questionDetail } from '../queries.js' ; import type { QuestionAnswersResult, QuestionDetailResult } from '../model.js' ; import { compactCount, freshId, parseTags, relativeTime, renderTags, renderUserCard, viewsFor, voteButton, } from '../components/chrome.js' ; // Palette inlined as a same-file literal (StyleX-style extraction resolves only // same-file literals; SPEC §13.1). Mirrors the `so` palette in chrome.tsx. const so = { white: '#ffffff' , border: '#e3e6e8' , borderMed: '#d6d9dc' , text: '#0c0d0e' , textSecondary: '#232629' , textMuted: '#525960' , textLight: '#6a737c' , link: '#0074cc' , linkHover: '#0a95ff' , blue: '#0a95ff' , blueHover: '#0074cc' , blueText: '#ffffff' , acceptedText: '#3d8b5f' , } as const ; // Question detail for `/questions/:id`: the question post, its answers, and the // answer composer — laid out like a Stack Overflow question page (vote gutter, // post body, tags, user card, then the answer list and "Your Answer" form). const detailStyles = style. create ({ header: { borderBottomColor: so.border, borderBottomStyle: 'solid' , borderBottomWidth: 1 , paddingBlockEnd: 12 , }, titleRow: { alignItems: 'flex-start' , display: 'flex' , gap: 16 , justifyContent: 'space-between' , }, detailTitle: { color: so.text, fontSize: 26 , fontWeight: 400 , lineHeight: 1.3 , margin: 0 , }, askButton: { backgroundColor: so.blue, borderColor: so.blue, borderRadius: 4 , borderStyle: 'solid' , borderWidth: 1 , color: so.blueText, flexShrink: 0 , fontSize: 13 , paddingBlock: 10 , paddingInline: 11 , textDecoration: 'none' , ':hover' : { backgroundColor: so.blueHover }, }, metaRow: { color: so.textMuted, display: 'flex' , flexWrap: 'wrap' , fontSize: 13 , gap: 16 , marginBlockStart: 8 , }, metaLabel: { color: so.textLight }, metaValue: { color: so.textSecondary }, post: { borderBottomColor: so.border, borderBottomStyle: 'solid' , borderBottomWidth: 1 , display: 'flex' , gap: 16 , paddingBlock: 16 , '@media (max-width: 600px)' : { gap: 10 }, }, postAccepted: { backgroundColor: '#fbfdfb' }, gutter: { alignItems: 'center' , color: so.textLight, display: 'flex' , flexDirection: 'column' , flexShrink: 0 , gap: 4 , width: 42 , }, voteArrow: { alignItems: 'center' , borderColor: so.borderMed, borderRadius: 1000 , borderStyle: 'solid' , borderWidth: 1 , color: so.textLight, display: 'grid' , fontSize: 11 , height: 26 , lineHeight: 1 , placeItems: 'center' , width: 26 , }, voteNum: { color: so.textSecondary, fontSize: 19 , fontVariantNumeric: 'tabular-nums' , fontWeight: 500 , lineHeight: 1 , }, acceptCheck: { color: so.acceptedText, fontSize: 26 , lineHeight: 1 , marginBlockStart: 2 , }, postMain: { display: 'grid' , flex: '1 1 0%' , gap: 14 , minWidth: 0 }, body: { color: so.text, fontSize: 15 , lineHeight: 1.65 , margin: 0 , whiteSpace: 'pre-wrap' , }, postFooter: { alignItems: 'flex-end' , display: 'flex' , flexWrap: 'wrap' , gap: 12 , justifyContent: 'space-between' , }, answersHead: { alignItems: 'center' , display: 'flex' , gap: 12 , justifyContent: 'space-between' , marginBlockStart: 24 , marginBlockEnd: 4 , }, answersTitle: { color: so.text, fontSize: 19 , fontWeight: 400 , margin: 0 }, sortControl: { borderColor: so.borderMed, borderRadius: 4 , borderStyle: 'solid' , borderWidth: 1 , color: so.textMuted, fontSize: 12 , paddingBlock: 5 , paddingInline: 8 , }, answerList: { listStyle: 'none' , margin: 0 , padding: 0 }, acceptedBadge: { alignItems: 'center' , color: so.acceptedText, display: 'inline-flex' , fontSize: 13 , fontWeight: 600 , gap: 5 , }, acceptedCheckSm: { fontSize: 15 , lineHeight: 1 }, composer: { display: 'grid' , gap: 12 , marginBlockStart: 28 }, composerTitle: { color: so.text, fontSize: 19 , fontWeight: 400 , margin: 0 }, input: { backgroundColor: so.white, borderColor: so.borderMed, borderRadius: 4 , borderStyle: 'solid' , borderWidth: 1 , boxSizing: 'border-box' , color: so.text, fontSize: 13 , paddingBlock: 9 , paddingInline: 11 , width: '100%' , ':focus' : { borderColor: so.blue, boxShadow: '0 0 0 4px rgba(10,149,255,0.15)' , outline: 'none' , }, }, textarea: { lineHeight: 1.5 , resize: 'vertical' }, composerActions: { display: 'flex' , justifyContent: 'flex-start' }, submitButton: { backgroundColor: so.blue, borderColor: so.blue, borderRadius: 4 , borderStyle: 'solid' , borderWidth: 1 , color: so.blueText, fontSize: 13 , paddingBlock: 10 , paddingInline: 11 , ':hover' : { backgroundColor: so.blueHover }, }, notFound: { color: so.textMuted, fontSize: 15 , paddingBlock: 24 }, back: { alignItems: 'center' , color: so.link, display: 'inline-flex' , fontSize: 13 , gap: 6 , marginBlockEnd: 12 , textDecoration: 'none' , ':hover' : { color: so.linkHover }, }, }); function renderQuestionPost ( question : QuestionDetailResult ) : ComponentChild { const tags = parseTags (question.tags); return ( < div style ={ detailStyles.post } > < div style ={ detailStyles.gutter } > { voteButton (question.id, question.score) } </ div > < div style ={ detailStyles.postMain } > { /* SPEC §9.1/§4.8: the post body is user-authored content, so it is sanitized through the safeRichHtml rich-HTML floor (NOT branded raw with trustedHtml) before reaching the raw-HTML sink — KV426 by-construction safe path for query/request-derived markup. */ } < p style ={ detailStyles.body } > { safeRichHtml (question.body) } </ p > < div style ={ detailStyles.postFooter } > { renderTags (tags) } { renderUserCard (question.authorId, question.authorName, question.createdAt, 'asked' ) } </ div > </ div > </ div > ); } function renderAnswerPost ( answer : QuestionAnswersResult [ number ]) : ComponentChild { return ( < li key ={ answer.id } style ={ detailStyles.post } > < div style ={ detailStyles.gutter } > < span style ={ detailStyles.voteArrow } aria-hidden = "true" > ▲ </ span > < span style ={ detailStyles.voteNum } > { answer.score } </ span > < span style ={ detailStyles.voteArrow } aria-hidden = "true" > ▼ </ span > { answer.accepted ? ( < span style ={ detailStyles.acceptCheck } aria-label = "Accepted" > ✓ </ span > ) : ( '' ) } </ div > < div style ={ detailStyles.postMain } > { answer.accepted ? ( < span style ={ detailStyles.acceptedBadge } > < span style ={ detailStyles.acceptedCheckSm } > ✓ </ span > Accepted answer </ span > ) : ( '' ) } { /* SPEC §9.1/§4.8: user-authored answer body sanitized via safeRichHtml (KV426 safe path). */ } < p style ={ detailStyles.body } > { safeRichHtml (answer.body) } </ p > < div style ={ detailStyles.postFooter } > < span /> { renderUserCard (answer.authorId, answer.authorName, answer.createdAt, 'answered' ) } </ div > </ div > </ li > ); } function renderQuestionDetailSecondary ( question : QuestionDetailResult , ordered : QuestionAnswersResult , questionId : string , ) : ComponentChild { return ( < section > < div style ={ detailStyles.answersHead } > < h2 style ={ detailStyles.answersTitle } > { question.answerCount } { question.answerCount === 1 ? 'Answer' : 'Answers' } </ h2 > < span style ={ detailStyles.sortControl } >Sorted by: Highest score</ span > </ div > < ul style ={ detailStyles.answerList } > { ordered. map (( answer ) => renderAnswerPost (answer)) } </ ul > { /* Native form; enhanced submissions refresh this whole region. */ } < form enhance mutation ={ postAnswerMutation } id = "your-answer" style ={ detailStyles.composer } > < input type = "hidden" name = "id" value ={ freshId ( 'a' ) } /> < input type = "hidden" name = "questionId" value ={ questionId } /> < h2 style ={ detailStyles.composerTitle } >Your Answer</ h2 > < textarea id = "answer-body" name = "body" required rows = "6" placeholder = "Share what you know — code and reasoning welcome…" style ={ [detailStyles.input, detailStyles.textarea] } /> < div style ={ detailStyles.composerActions } > < button type = "submit" style ={ detailStyles.submitButton } > Post Your Answer </ button > </ div > </ form > </ section > ); } // Accepted answer first, then by score (desc) — Stack Overflow's default order. function sortedAnswers ( answers : QuestionAnswersResult ) : QuestionAnswersResult { return [ ... answers]. sort (( left , right ) => { if (left.accepted !== right.accepted) return left.accepted ? - 1 : 1 ; return right.score - left.score; }); } // Interactive region rendered inside the full page and fragment responses. export const QuestionDetailRegion = component ({ mutations: { postAnswer: postAnswerMutation }, props: { questionId: String }, queries: { answers: questionAnswers. args (( props : { questionId : string }) => ({ questionId: props.questionId, })), question: questionDetail. args (( props : { questionId : string }) => ({ id: props.questionId })), }, render : ( { answers , question , questionId , } : { answers : QuestionAnswersResult ; question : QuestionDetailResult | null ; questionId : string ; }, _state , ) => { if ( ! question) { return ( < div > < a style ={ detailStyles.back } href = "/" > ← All questions </ a > < h1 style ={ detailStyles.detailTitle } >Question not found</ h1 > < p style ={ detailStyles.notFound } > This question does not exist (it may have been a demo that reset). </ p > </ div > ); } const views = viewsFor (question.id, question.score); const asked = relativeTime (question.createdAt); const ordered = sortedAnswers (answers); const secondaryTarget = `question-detail-secondary:${ question . id }` ; return ( < div > < div style ={ detailStyles.header } > < div style ={ detailStyles.titleRow } > < h1 style ={ detailStyles.detailTitle } > { question.title } </ h1 > < a href = "#your-answer" style ={ detailStyles.askButton } > Ask Question </ a > </ div > < div style ={ detailStyles.metaRow } > < span > < span style ={ detailStyles.metaLabel } >Asked</ span > { ' ' } < span style ={ detailStyles.metaValue } > { asked } </ span > </ span > < span > < span style ={ detailStyles.metaLabel } >Viewed</ span > { ' ' } < span style ={ detailStyles.metaValue } > { `${ compactCount ( views ) } times` } </ span > </ span > </ div > </ div > { renderQuestionPost (question) } < Defer fallback ={ < section aria-busy = "true" style = "min-height:720px" data-kovo-region-placeholder = "answers" /> } priority = "after-paint" render ={ () => renderQuestionDetailSecondary (question, ordered, questionId) } target ={ secondaryTarget } /> </ div > ); }, });