90 lines
2.4 KiB
TypeScript
90 lines
2.4 KiB
TypeScript
// app/api/book/chapter/[id]/route.ts
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// 获取章节详情
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import { NextRequest, NextResponse } from 'next/server'
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import fs from 'fs'
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import path from 'path'
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import matter from 'gray-matter'
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const BOOK_DIR = path.join(process.cwd(), 'book')
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export async function GET(
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req: NextRequest,
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{ params }: { params: { id: string } }
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) {
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try {
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const chapterId = params.id
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// 根据ID查找对应的Markdown文件
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const chapterFile = findChapterFile(chapterId)
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if (!chapterFile) {
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return NextResponse.json(
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{ error: '章节不存在' },
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{ status: 404 }
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)
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}
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const fileContent = fs.readFileSync(chapterFile, 'utf-8')
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const { data, content } = matter(fileContent)
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// 判断是否需要购买（前3章免费）
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const needPurchase = !isFreeChapter(chapterId)
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// 如果需要购买，检查用户是否已购买
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// TODO: 从token中获取用户信息，检查购买状态
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const chapter = {
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id: chapterId,
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title: data.title || path.basename(chapterFile, '.md'),
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content: content,
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words: content.length,
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updateTime: data.date || fs.statSync(chapterFile).mtime.toISOString(),
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needPurchase,
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prevChapterId: null, // TODO: 实现上下章导航
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nextChapterId: null
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}
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return NextResponse.json(chapter)
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} catch (error) {
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console.error('获取章节失败:', error)
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return NextResponse.json(
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{ error: '获取章节失败' },
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{ status: 500 }
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)
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}
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}
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// 查找章节文件
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function findChapterFile(chapterId: string): string | null {
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const categories = fs.readdirSync(BOOK_DIR).filter(item => {
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const itemPath = path.join(BOOK_DIR, item)
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return fs.statSync(itemPath).isDirectory()
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})
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for (const category of categories) {
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const categoryPath = path.join(BOOK_DIR, category)
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const files = fs.readdirSync(categoryPath).filter(file => file.endsWith('.md'))
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for (const file of files) {
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const slug = `${category}/${file.replace('.md', '')}`
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if (slug === chapterId || file.replace('.md', '') === chapterId) {
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return path.join(categoryPath, file)
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}
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}
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}
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return null
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}
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// 判断是否免费章节（前3章免费）
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function isFreeChapter(chapterId: string): boolean {
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const freeChapters = [
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'序言',
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'第一章',
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'第二章'
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]
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return freeChapters.some(free => chapterId.includes(free))
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}
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