update

server/routes/generate.ts

@@ -169,11 +169,17 @@ export function createGenerateRouter(apiKey: string | undefined): Hono {
 
     const entries = rawEntries
       .map((entry, index) => {
-        const e = entry as { index?: unknown; title?: unknown; charCount?: unknown }
+        const e = entry as {
+          index?: unknown
+          title?: unknown
+          charCount?: unknown
+          depth?: unknown
+        }
         const title = typeof e?.title === 'string' ? e.title.trim() : ''
         const entryIndex = typeof e?.index === 'number' ? e.index : index
         const charCount = typeof e?.charCount === 'number' ? e.charCount : 0
-        return { index: entryIndex, title, charCount }
+        const depth = typeof e?.depth === 'number' && e.depth > 0 ? e.depth : 0
+        return { index: entryIndex, title, charCount, depth }
       })
       .filter((entry) => entry.title !== '')
 
@@ -186,7 +192,10 @@ export function createGenerateRouter(apiKey: string | undefined): Hono {
     }
 
     const tocText = entries
-      .map((entry) => `${entry.index}\t${entry.title}\t约${entry.charCount}字`)
+      .map(
+        (entry) =>
+          `${entry.index}\t${'  '.repeat(entry.depth)}${entry.title}\t约${entry.charCount}字`,
+      )
       .join('\n')
 
     let response: Response
@@ -203,7 +212,7 @@ export function createGenerateRouter(apiKey: string | undefined): Hono {
             {
               role: 'system',
               content:
-                '你是教学设计专家。下面是一本教材的目录，每行为「序号<TAB>标题<TAB>正文体量」。' +
+                '你是教学设计专家。下面是一本教材的目录，每行为「序号<TAB>标题<TAB>正文体量」，标题前的缩进表示层级（章 → 节 → 小节），同一上级标题下的条目应优先归到相邻课时。' +
                 '请据此把全书划分为一系列单课时课题：难度由浅入深、覆盖全部目录条目，体量小的相邻条目可合并为一课时，体量大的条目可拆成多课时。' +
                 '每个课题对应一个或多个目录条目（用其序号表示）。' +
                 '仅输出 JSON，不要解释、不要代码块围栏，形如：' +

src/components/BookImportDialog.test.ts

@@ -1,5 +1,4 @@
 import { flushPromises, mount } from '@vue/test-utils'
-import JSZip from 'jszip'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import * as booksApi from '../services/booksApi'
 import BookImportDialog from './BookImportDialog.vue'
@@ -14,18 +13,15 @@ const baseProps = {
   error: null,
 }
 
-async function makeZipFile(files: Record<string, string>): Promise<File> {
+function makeMdFiles(files: Record<string, string>): File[] {
-  const zip = new JSZip()
+  return Object.entries(files).map(
-  for (const [name, content] of Object.entries(files)) {
+    ([name, content]) => new File([content], name, { type: 'text/markdown' }),
-    zip.file(name, content)
+  )
-  }
-  const blob = await zip.generateAsync({ type: 'blob' })
-  return new File([blob], 'book.zip', { type: 'application/zip' })
 }
 
-async function uploadFile(wrapper: ReturnType<typeof mount>, file: File): Promise<void> {
+async function uploadFiles(wrapper: ReturnType<typeof mount>, files: File[]): Promise<void> {
   const input = wrapper.get('input[type="file"]')
-  Object.defineProperty(input.element, 'files', { value: [file], configurable: true })
+  Object.defineProperty(input.element, 'files', { value: files, configurable: true })
   await input.trigger('change')
 }
 
@@ -38,7 +34,7 @@ describe('BookImportDialog', () => {
     vi.restoreAllMocks()
   })
 
-  it('parses toc + zip, divides lessons, and emits start with assembled content', async () => {
+  it('parses toc + md files, divides lessons, and emits start with assembled content', async () => {
     vi.mocked(booksApi.divideLessonsFromBook).mockResolvedValue({
       lessons: [
         { title: 'C# 入门——搭建环境', sourceIndexes: [0] },
@@ -49,19 +45,19 @@ describe('BookImportDialog', () => {
     const wrapper = mount(BookImportDialog, { props: baseProps })
 
     await wrapper.get('textarea').setValue('第1章 入门\n第2章 变量')
-    const zip = await makeZipFile({ '第1章 入门.md': '入门正文', '第2章 变量.md': '变量正文' })
+    const files = makeMdFiles({ '第1章 入门.md': '入门正文', '第2章 变量.md': '变量正文' })
-    await uploadFile(wrapper, zip)
+    await uploadFiles(wrapper, files)
     await flushPromises()
 
-    // 解析并划分（parseZip 经由真实定时器解析，故用 waitFor 等待预览出现）
+    // 解析并划分（File.text() 为异步，故用 waitFor 等待预览出现）
     await wrapper.get('.dialog-actions button').trigger('click')
     await vi.waitFor(() => {
       expect(wrapper.findAll('.book-import-lesson-title')).toHaveLength(2)
     })
 
     expect(booksApi.divideLessonsFromBook).toHaveBeenCalledWith([
-      { index: 0, title: '第1章 入门', charCount: 4 },
+      { index: 0, title: '第1章 入门', charCount: 4, depth: 0 },
-      { index: 1, title: '第2章 变量', charCount: 4 },
+      { index: 1, title: '第2章 变量', charCount: 4, depth: 0 },
     ])
 
     // 预览阶段：编辑第一个课时标题
@@ -79,12 +75,12 @@ describe('BookImportDialog', () => {
     ])
   })
 
-  it('rejects a non-zip upload', async () => {
+  it('rejects an upload with no md files', async () => {
     const wrapper = mount(BookImportDialog, { props: baseProps })
     const txt = new File(['x'], 'notes.txt', { type: 'text/plain' })
-    await uploadFile(wrapper, txt)
+    await uploadFiles(wrapper, [txt])
     await flushPromises()
 
-    expect(wrapper.get('.app-notice--error').text()).toContain('.zip')
+    expect(wrapper.get('.app-notice--error').text()).toContain('.md')
   })
 })

src/components/BookImportDialog.vue

@@ -4,7 +4,7 @@ import * as booksApi from '../services/booksApi'
 import {
   assembleContent,
   matchToc,
-  parseZip,
+  parseMdFiles,
   type BookEntry,
   type ProposedLesson,
 } from '../services/bookImport'
@@ -29,7 +29,7 @@ const emit = defineEmits<{
 
 const phase = ref<Phase>('input')
 const tocText = ref('')
-const zipFile = ref<File | null>(null)
+const mdFiles = ref<File[]>([])
 const inputError = ref<string | null>(null)
 
 const entries = ref<BookEntry[]>([])
@@ -47,14 +47,16 @@ watch(
 )
 
 function onFiles(files: File[]): void {
-  const file = files[0]
+  const mds = files.filter((file) => /\.md$/i.test(file.name))
-  if (!file) return
+  if (mds.length === 0) {
-  if (!/\.zip$/i.test(file.name)) {
+    inputError.value = '请上传 .md 文件。'
-    inputError.value = '请上传 .zip 压缩包。'
     return
   }
   inputError.value = null
-  zipFile.value = file
+  // 去重（同名覆盖）并追加到已选列表。
+  const byName = new Map(mdFiles.value.map((f) => [f.name, f]))
+  for (const file of mds) byName.set(file.name, file)
+  mdFiles.value = [...byName.values()]
 }
 
 function chapterTitlesOf(lesson: ProposedLesson): string {
@@ -65,15 +67,15 @@ function chapterTitlesOf(lesson: ProposedLesson): string {
 }
 
 async function handleAnalyze(): Promise<void> {
-  if (!tocText.value.trim() || !zipFile.value) return
+  if (!tocText.value.trim() || mdFiles.value.length === 0) return
   inputError.value = null
   phase.value = 'division-loading'
 
   try {
-    const map = await parseZip(zipFile.value)
+    const map = await parseMdFiles(mdFiles.value)
     entries.value = matchToc(tocText.value, map)
   } catch {
-    inputError.value = '压缩包解析失败，请确认是有效的 .zip 文件。'
+    inputError.value = 'Markdown 文件读取失败，请重试。'
     phase.value = 'input'
     return
   }
@@ -86,7 +88,12 @@ async function handleAnalyze(): Promise<void> {
 
   try {
     const result = await booksApi.divideLessonsFromBook(
-      entries.value.map((e) => ({ index: e.index, title: e.title, charCount: e.charCount })),
+      entries.value.map((e) => ({
+        index: e.index,
+        title: e.title,
+        charCount: e.charCount,
+        depth: e.depth,
+      })),
     )
     lessons.value = result.lessons
     phase.value = 'preview'
@@ -115,7 +122,7 @@ function handleStart(): void {
 function handleClose(): void {
   phase.value = 'input'
   tocText.value = ''
-  zipFile.value = null
+  mdFiles.value = []
   inputError.value = null
   entries.value = []
   lessons.value = []
@@ -130,7 +137,7 @@ function handleClose(): void {
 
       <!-- 第一步：粘贴目录 + 上传 ZIP -->
       <template v-if="phase === 'input'">
-        <p>粘贴教材目录（每行一个标题），并上传内含各章 .md 的 ZIP（文件名为目录标题）。AI 将据此划分课时。</p>
+        <p>粘贴教材目录（每行一个标题，可用缩进表示章/节层级），并上传各章 .md 文件（文件名为目录标题，可多选）。AI 将据此划分课时。</p>
         <p v-if="inputError" class="app-notice app-notice--error" role="alert">{{ inputError }}</p>
         <textarea
           v-model="tocText"
@@ -138,10 +145,14 @@ function handleClose(): void {
           rows="12"
           placeholder="第1章 C# 入门&#10;第2章 变量与数据类型&#10;第3章 流程控制"
         />
-        <UploadDropzone accept=".zip,application/zip" :multiple="false" @files="onFiles" />
+        <UploadDropzone accept=".md,text/markdown" :multiple="true" @files="onFiles" />
-        <p v-if="zipFile" class="book-import-file">已选：{{ zipFile.name }}</p>
+        <p v-if="mdFiles.length" class="book-import-file">已选 {{ mdFiles.length }} 个文件</p>
         <div class="dialog-actions">
-          <button type="button" :disabled="!tocText.trim() || !zipFile" @click="handleAnalyze">
+          <button
+            type="button"
+            :disabled="!tocText.trim() || mdFiles.length === 0"
+            @click="handleAnalyze"
+          >
             解析并划分课时
           </button>
           <button type="button" @click="handleClose">取消</button>

src/services/bookImport.test.ts

@@ -1,19 +1,14 @@
-import JSZip from 'jszip'
 import { describe, expect, it } from 'vitest'
 import {
   assembleContent,
   matchToc,
   normalizeTitle,
-  parseZip,
+  parseMdFiles,
   type BookEntry,
 } from './bookImport'
 
-async function makeZip(files: Record<string, string>): Promise<Blob> {
+function makeMdFiles(files: Record<string, string>): File[] {
-  const zip = new JSZip()
+  return Object.entries(files).map(([name, content]) => new File([content], name))
-  for (const [name, content] of Object.entries(files)) {
-    zip.file(name, content)
-  }
-  return zip.generateAsync({ type: 'blob' })
 }
 
 describe('normalizeTitle', () => {
@@ -23,15 +18,15 @@ describe('normalizeTitle', () => {
   })
 })
 
-describe('parseZip + matchToc', () => {
+describe('parseMdFiles + matchToc', () => {
   it('matches toc lines to md files by normalized filename', async () => {
-    const blob = await makeZip({
+    const map = await parseMdFiles(
+      makeMdFiles({
         '第1章 入门.md': '入门正文',
         '第2章 变量.md': '变量正文',
         'readme.txt': '忽略非 md',
-    })
+      }),
-
+    )
-    const map = await parseZip(blob)
     const entries = matchToc('第1章 入门\n第2章 变量\n第3章 缺失', map)
 
     expect(entries).toHaveLength(3)
@@ -40,9 +35,27 @@ describe('parseZip + matchToc', () => {
     expect(entries[2]).toMatchObject({ index: 2, content: '', matched: false, charCount: 0 })
   })
 
-  it('ignores directory prefixes inside the zip', async () => {
+  it('infers depth from leading indentation, ranking distinct widths', async () => {
-    const blob = await makeZip({ 'book/第1章 入门.md': '正文' })
+    const map = await parseMdFiles([])
-    const map = await parseZip(blob)
+    const entries = matchToc(
+      ['第1章 入门', '  1.1 安装', '  1.2 第一个程序', '第2章 变量'].join('\n'),
+      map,
+    )
+
+    expect(entries.map((e) => e.depth)).toEqual([0, 1, 1, 0])
+    expect(entries[1]?.title).toBe('1.1 安装')
+  })
+
+  it('treats tab and space indentation as the same depth unit per document', async () => {
+    const map = await parseMdFiles([])
+    const spaces = matchToc(['章', '    节'].join('\n'), map)
+    const tabs = matchToc(['章', '\t节'].join('\n'), map)
+    expect(spaces.map((e) => e.depth)).toEqual([0, 1])
+    expect(tabs.map((e) => e.depth)).toEqual([0, 1])
+  })
+
+  it('ignores directory prefixes in file names', async () => {
+    const map = await parseMdFiles(makeMdFiles({ 'book/第1章 入门.md': '正文' }))
     const entries = matchToc('第1章 入门', map)
     expect(entries[0]?.matched).toBe(true)
   })
@@ -51,9 +64,9 @@ describe('parseZip + matchToc', () => {
 describe('assembleContent', () => {
   it('concatenates content of all source entries in order', () => {
     const entries: BookEntry[] = [
-      { index: 0, title: 'a', content: 'AAA', charCount: 3, matched: true },
+      { index: 0, title: 'a', depth: 0, content: 'AAA', charCount: 3, matched: true },
-      { index: 1, title: 'b', content: 'BBB', charCount: 3, matched: true },
+      { index: 1, title: 'b', depth: 0, content: 'BBB', charCount: 3, matched: true },
-      { index: 2, title: 'c', content: '', charCount: 0, matched: false },
+      { index: 2, title: 'c', depth: 0, content: '', charCount: 0, matched: false },
     ]
     expect(assembleContent({ title: 'x', sourceIndexes: [0, 1, 2] }, entries)).toBe('AAA\n\nBBB')
   })

src/services/bookImport.ts

@@ -1,9 +1,9 @@
-import JSZip from 'jszip'
-
 /** 目录中的一行，匹配到正文后携带内容与体量。 */
 export interface BookEntry {
   index: number
   title: string
+  /** 由前导缩进推断的层级，0 为顶层（章），数字越大越深（节）。 */
+  depth: number
   content: string
   charCount: number
   matched: boolean
@@ -27,38 +27,44 @@ export function normalizeTitle(value: string): string {
     .trim()
 }
 
-/** 解压 ZIP，按归一化文件名建立 { 标题 → 正文 } 映射（仅取 .md 文件）。 */
+/** 读取多个 .md 文件，按归一化文件名建立 { 标题 → 正文 } 映射（忽略非 .md）。 */
-export async function parseZip(file: File | Blob): Promise<Map<string, string>> {
+export async function parseMdFiles(files: readonly File[]): Promise<Map<string, string>> {
-  const zip = await JSZip.loadAsync(file)
   const map = new Map<string, string>()
 
-  const entries = Object.values(zip.files).filter(
+  for (const file of files) {
-    (entry) => !entry.dir && /\.md$/i.test(entry.name),
+    if (!/\.md$/i.test(file.name)) continue
-  )
+    // 文件名可能带目录前缀（拖拽文件夹时），只取最后一段。
-
+    const base = file.name.split('/').pop() ?? file.name
-  for (const entry of entries) {
-    // 文件名可能带目录前缀，只取最后一段。
-    const base = entry.name.split('/').pop() ?? entry.name
     const key = normalizeTitle(base)
     if (key) {
-      map.set(key, await entry.async('text'))
+      map.set(key, await file.text())
     }
   }
 
   return map
 }
 
-/** 把目录文本逐行与正文映射匹配，得到带内容与体量的条目列表。 */
+/** 一行前导空白的宽度（tab 记 4 格），用作缩进度量。 */
+function indentWidth(line: string): number {
+  const lead = line.match(/^[ \t]*/)?.[0] ?? ''
+  return lead.replace(/\t/g, '    ').length
+}
+
+/**
+ * 把目录文本逐行与正文映射匹配，得到带内容与体量的条目列表。
+ * 缩进层级按全文出现的不同缩进宽度排名得出，兼容空格 / tab、2 格 / 4 格等不同风格。
+ */
 export function matchToc(tocText: string, contentMap: Map<string, string>): BookEntry[] {
-  return tocText
+  const lines = tocText.split('\n').filter((line) => line.trim() !== '')
-    .split('\n')
+  const widths = [...new Set(lines.map(indentWidth))].sort((a, b) => a - b)
-    .map((line) => line.trim())
+
-    .filter(Boolean)
+  return lines.map((line, index) => {
-    .map((title, index) => {
+    const title = line.trim()
     const content = contentMap.get(normalizeTitle(title)) ?? ''
     return {
       index,
       title,
+      depth: widths.indexOf(indentWidth(line)),
       content,
       charCount: content.length,
       matched: content !== '',

src/services/booksApi.ts

@@ -86,7 +86,7 @@ export function generateOutline(theme: string, count = 18): Promise<{ titles: st
 }
 
 export function divideLessonsFromBook(
-  entries: readonly { index: number; title: string; charCount: number }[],
+  entries: readonly { index: number; title: string; charCount: number; depth: number }[],
 ): Promise<{ lessons: ProposedLesson[] }> {
   return authedFetch('/api/generate/lessons-from-book', {
     method: 'POST',