feat: load and autosave teaching books via booksApi

src/composables/useTeachingBook.test.ts

@@ -1,14 +1,49 @@
+import { flushPromises } from '@vue/test-utils'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { createEmptyBook, createEmptyTeachingDesign, type TeachingBook } from '../domain/teachingDesign'
+import * as booksApi from '../services/booksApi'
 import { useTeachingBook } from './useTeachingBook'
 
+vi.mock('../services/booksApi')
+
+function mockGetBook(data: TeachingBook, id = 'b1'): void {
+  vi.mocked(booksApi.getBook).mockResolvedValue({ id, name: '示例整本', updatedAt: data.updatedAt, data })
+}
+
 describe('useTeachingBook', () => {
   beforeEach(() => {
-    localStorage.clear()
+    vi.clearAllMocks()
     vi.useFakeTimers()
   })
 
+  it('loads the book from the API', async () => {
+    const data = createEmptyBook()
+    data.cover.courseName = 'Web 前端开发'
+    mockGetBook(data)
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    expect(booksApi.getBook).toHaveBeenCalledWith('b1')
+    expect(store.loadStatus.value).toBe('loaded')
+    expect(store.book.value.cover.courseName).toBe('Web 前端开发')
+  })
+
+  it('sets loadStatus to error when loading fails', async () => {
+    vi.mocked(booksApi.getBook).mockRejectedValue(new Error('网络错误。'))
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    expect(store.loadStatus.value).toBe('error')
+    expect(store.loadError.value).toBe('网络错误。')
+  })
+
   it('imports files in natural order and selects the first lesson', async () => {
-    const store = useTeachingBook()
+    mockGetBook(createEmptyBook())
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
     const files = [
       new File(['# 第十课 教学设计'], '10.md', { type: 'text/markdown' }),
       new File(['# 第二课 教学设计'], '2.md', { type: 'text/markdown' }),
@@ -16,23 +51,107 @@ describe('useTeachingBook', () => {
 
     await store.importFiles(files, 'keep')
 
-    expect(store.book.value.designs.map((design) => design.originalFilename)).toEqual([
-      '2.md',
-      '10.md',
-    ])
+    expect(store.book.value.designs.map((design) => design.originalFilename)).toEqual(['2.md', '10.md'])
     expect(store.book.value.selectedId).toBe(store.book.value.designs[0]?.id)
   })
 
   it('reorders lessons without changing their identities', async () => {
-    const store = useTeachingBook()
-    await store.importFiles([
-      new File(['# One 教学设计'], '1.md'),
-      new File(['# Two 教学设计'], '2.md'),
-    ], 'keep')
+    mockGetBook(createEmptyBook())
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    await store.importFiles(
+      [new File(['# One 教学设计'], '1.md'), new File(['# Two 教学设计'], '2.md')],
+      'keep',
+    )
 
     const ids = store.book.value.designs.map((design) => design.id)
     store.moveDesign(0, 1)
 
     expect(store.book.value.designs.map((design) => design.id)).toEqual(ids.reverse())
   })
+
+  it('does not autosave immediately after the initial load', async () => {
+    mockGetBook(createEmptyBook())
+    useTeachingBook('b1')
+    await flushPromises()
+
+    await vi.advanceTimersByTimeAsync(300)
+
+    expect(booksApi.updateBook).not.toHaveBeenCalled()
+  })
+
+  it('autosaves the book via the API after the debounce delay', async () => {
+    mockGetBook(createEmptyBook())
+    vi.mocked(booksApi.updateBook).mockResolvedValue({ id: 'b1', name: '示例整本', updatedAt: 'later' })
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    store.updateCover({ courseName: '新课程名' })
+    await vi.advanceTimersByTimeAsync(300)
+
+    expect(booksApi.updateBook).toHaveBeenCalledWith('b1', store.book.value)
+    expect(store.saveStatus.value).toBe('saved')
+  })
+
+  it('sets saveStatus to error when autosave fails', async () => {
+    mockGetBook(createEmptyBook())
+    vi.mocked(booksApi.updateBook).mockRejectedValue(new Error('保存失败。'))
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    store.updateCover({ courseName: '新课程名' })
+    await vi.advanceTimersByTimeAsync(300)
+
+    expect(store.saveStatus.value).toBe('error')
+    expect(store.lastError.value).toBe('保存失败。')
+  })
+
+  it('generateLesson appends a parsed design and selects it', async () => {
+    mockGetBook(createEmptyBook())
+    vi.mocked(booksApi.generateLesson).mockResolvedValue({
+      filename: 'css-flex.md',
+      markdown: '# CSS 弹性布局 教学设计',
+    })
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    const result = await store.generateLesson('CSS 弹性布局')
+
+    expect(result).toEqual({ ok: true })
+    expect(store.book.value.designs).toHaveLength(1)
+    expect(store.book.value.selectedId).toBe(store.book.value.designs[0]?.id)
+  })
+
+  it('generateLesson returns an error when the API call fails', async () => {
+    mockGetBook(createEmptyBook())
+    vi.mocked(booksApi.generateLesson).mockRejectedValue(new Error('Deepseek 请求失败。'))
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    const result = await store.generateLesson('CSS 弹性布局')
+
+    expect(result).toEqual({ ok: false, message: 'Deepseek 请求失败。' })
+    expect(store.book.value.designs).toHaveLength(0)
+  })
+
+  it('clearBook empties designs but keeps the cover', async () => {
+    const data = createEmptyBook()
+    data.cover.courseName = 'Web 前端开发'
+    data.designs.push(createEmptyTeachingDesign('1.md'))
+    mockGetBook(data)
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    store.clearBook()
+
+    expect(store.book.value.designs).toEqual([])
+    expect(store.book.value.cover.courseName).toBe('Web 前端开发')
+    expect(store.book.value.selectedId).toBe('cover')
+  })
 })