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1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 | /** * 书籍生成模块 - Prisma 数据库存储 */ import crypto from 'crypto'; import { prisma } from '../../models'; import { Book, BookOutline, Chapter, ChapterGenStage, BookGenStage } from './book-generator.types'; import { Prisma } from '@prisma/client'; import { generateAudio } from '../tts/tts.service'; import { callLLMWithMessages, callLLMWithTools, ChatMessage } from '../../services/llm'; import { createBookTools } from '../../services/llm/book-tools'; import { SUBSECTION_CONTENT_SYSTEM_PROMPT } from './prompts/templates'; import { countWords } from './utils'; import { cleanThinkingText } from './utils/content-cleaner'; import { advanceChapter, regenerateChapter, safeTransitionChapter } from './stage-manager'; import { mergeChapterAudios } from '../player/player.service'; import { logAiCall } from '../../services/ai-call-logger'; import { consumeAudioMinutes } from '../subscription/subscription.service'; /** * 取消书籍所有章节的音频生成（将 pending/processing 任务标记为 cancelled，回退章节阶段） */ export async function cancelAudioGeneration(bookId: string): Promise<{ cancelledCount: number; rolledBackChapters: number[] }> { const chapters = await prisma.bookChapter.findMany({ where: { bookId: Number(bookId) }, select: { id: true, level: true }, }); if (chapters.length === 0) { return { cancelledCount: 0, rolledBackChapters: [] }; } const maxLevel = Math.max(...chapters.map(c => c.level || 0)); const leafChapterIds = chapters.filter(c => c.level === maxLevel).map(c => c.id); // 找出所有 pending/processing 状态的 TTS 任务 const activeTasks = await prisma.ttsTask.findMany({ where: { chapterId: { in: leafChapterIds }, taskType: 'tts', status: { in: ['pending', 'processing'] }, }, select: { id: true, chapterId: true }, }); if (activeTasks.length === 0) { return { cancelledCount: 0, rolledBackChapters: [] }; } const taskIds = activeTasks.map(t => t.id); const affectedChapterIds = [...new Set(activeTasks.map(t => t.chapterId))]; // 批量标记任务为 cancelled await prisma.ttsTask.updateMany({ where: { id: { in: taskIds } }, data: { status: 'cancelled' }, }); // 回退受影响章节的 genStage 到 content_completed await prisma.bookChapter.updateMany({ where: { id: { in: affectedChapterIds }, genStage: 'audio_generating' }, data: { genStage: 'content_completed' }, }); return { cancelledCount: taskIds.length, rolledBackChapters: affectedChapterIds, }; } // ============ 删除书籍 ============ /** * 根据所有章节状态计算书籍阶段 * 书籍阶段 = 所有章节中最低的阶段（最落后的章节决定了书籍的进度） */ function computeBookGenStage(chapters: { genStage: string }[]): BookGenStage { if (chapters.length === 0) return 'draft'; // 章节阶段顺序（索引越大越"后"） const stageOrder = ['idle', 'outline_completed', 'content_generating', 'content_completed', 'audio_generating', 'audio_completed', 'video_generating', 'video_completed', 'failed']; // 找出最低阶段的索引 let minIdx = stageOrder.length; // 默认最大 for (const ch of chapters) { const idx = stageOrder.indexOf(ch.genStage); if (idx === -1) { console.warn(`[BookStore] 未知章节阶段: chapterId=${(ch as any).id}, genStage="${ch.genStage}"，跳过该章节`); continue; } if (idx < minIdx) { minIdx = idx; } } // 全部未知 → 回退到 draft if (minIdx >= stageOrder.length) { console.warn('[BookStore] 所有章节阶段未知，回退到 draft'); return 'draft'; } // 最低阶段索引对应的阶段 const minStage = stageOrder[minIdx]; // 映射到书籍阶段 // idle → outlining（待生成大纲） // outline_completed → outline_completed（大纲已完成，待生成内容） // content_generating → content_generating（正在生成内容） // content_completed → content_completed // audio_generating → audio_generating // audio_completed → audio_completed // video_generating → video_generating // video_completed → video_completed // failed → failed const stageMap: Record<string, BookGenStage> = { 'idle': 'outlining', 'outline_completed': 'outline_completed', 'content_generating': 'content_generating', 'content_completed': 'content_completed', 'audio_generating': 'audio_generating', 'audio_completed': 'audio_completed', 'video_generating': 'video_generating', 'video_completed': 'video_completed', 'failed': 'failed', }; return stageMap[minStage] || 'draft'; } /** * 计算内容 SHA256 哈希（用于 TTS 去重） * 相同内容 → 相同哈希 → 不重复生成音频 */ function computeContentHash(content: string): string { return crypto.createHash('sha256').update(content.trim()).digest('hex'); } /** * 自动检测：当某个叶节点音频完成后，检查其所属1级章节下所有叶节点 * 是否都已就绪，若是则自动触发音频合并到该章节。 */ export async function tryAutoMerge( completedLeafId: number, bookId: number | null, leafLevel: number | null, leafParentId: number | null, ) { if (!bookId || leafLevel == null || leafLevel <= 1) return; try { // 1. 找到该叶节点所属的1级章节 let chapterId: number | null = null; if (leafLevel === 2) { chapterId = leafParentId; } else if (leafLevel === 3 && leafParentId != null) { const parentSection = await prisma.bookChapter.findUnique({ where: { id: leafParentId }, select: { parentId: true, level: true }, }); if (parentSection && parentSection.level === 2) { chapterId = parentSection.parentId; } } if (!chapterId) return; // 2. 计算该书的最大层级 const allChapters = await prisma.bookChapter.findMany({ where: { bookId }, select: { id: true, level: true, parentId: true, audioUrl: true, audioDuration: true }, }); if (allChapters.length === 0) { console.warn('[tryAutoMerge] 书籍无章节，跳过'); return; } const maxLevel = Math.max(...allChapters.map(c => c.level)); if (maxLevel <= 1) return; // 3. 收集属于该章节的所有叶节点 // 构建 parentId → children 映射用于遍历子树 const childrenMap = new Map<number, number[]>(); const nodeMap = new Map<number, (typeof allChapters)[number]>(); for (const ch of allChapters) { nodeMap.set(ch.id, ch); if (ch.parentId) { if (!childrenMap.has(ch.parentId)) childrenMap.set(ch.parentId, []); childrenMap.get(ch.parentId)!.push(ch.id); } } // BFS 收集章节下所有后代节点 const descendantIds: number[] = []; const queue = [chapterId]; while (queue.length > 0) { const current = queue.shift()!; const children = childrenMap.get(current) || []; for (const childId of children) { descendantIds.push(childId); queue.push(childId); } } // 父节点ID集合（用于判断是否是叶节点） const parentIdSet = new Set(allChapters.map(c => c.parentId).filter(Boolean)); // 筛选叶节点：在章节后代中 且 不是任何节点的父节点 const leafNodesUnderChapter = allChapters.filter( ch => descendantIds.includes(ch.id) && !parentIdSet.has(ch.id), ); if (leafNodesUnderChapter.length === 0) return; // 4. 检查是否所有叶节点都有音频 const allHaveAudio = leafNodesUnderChapter.every( ch => ch.audioUrl && ch.audioUrl !== '', ); if (!allHaveAudio) { const missingCount = leafNodesUnderChapter.filter( ch => !ch.audioUrl || ch.audioUrl === '', ).length; console.log( `[AutoMerge] 章节${chapterId}: ${leafNodesUnderChapter.length - missingCount}/${leafNodesUnderChapter.length} 个叶节点音频就绪，等待剩余 ${missingCount} 个...`, ); return; } // 5. 检查该章节是否已有合并音频（幂等） // 但如果父章节的合并音频时长与子节时长总和不匹配，需要重新合并 const chapter = nodeMap.get(chapterId); if (chapter?.audioUrl && chapter.audioUrl.includes('_merged')) { // 检查合并音频时长是否与子节时长总和匹配 const childDurations = leafNodesUnderChapter .filter(ch => ch.audioUrl) .map(ch => ch.audioDuration || 0); const totalChildDuration = childDurations.reduce((sum, d) => sum + d, 0); const parentDuration = chapter.audioDuration || 0; // 如果合并音频时长 < 子节总时长的 80%，说明合并不完整，需要重新合并 if (parentDuration > 0 && totalChildDuration > 0 && parentDuration < totalChildDuration * 0.8) { console.log(`[AutoMerge] 章节${chapterId}合并音频时长(${parentDuration}s) < 子节总时长(${totalChildDuration}s)的80%，需要重新合并`); // 清除旧的合并音频 await prisma.bookChapter.update({ where: { id: chapterId }, data: { audioUrl: '', audioDuration: 0 }, }); } else { console.log(`[AutoMerge] 章节${chapterId}已有合并音频，跳过`); return; } } // 6. 触发合并 console.log( `[AutoMerge] 🎵 章节${chapterId}下所有${leafNodesUnderChapter.length}个叶节点音频已就绪，开始自动合并...`, ); const mergedUrl = await mergeChapterAudios(chapterId); if (mergedUrl) { console.log(`[AutoMerge] ✅ 章节${chapterId}音频自动合并完成: ${mergedUrl}`); } else { console.warn(`[AutoMerge] ⚠️ 章节${chapterId}合并返回空结果`); } } catch (err) { console.error(`[AutoMerge] 自动合并检测失败:`, err); } } /** * 构建小节内容生成消息 */ function buildSubsectionContentMessages( topic: string, bookDescription: string, chapterTitle: string, chapterSummary: string, sectionTitle: string, sectionSummary: string, subsection: any, writingStyle?: string ): ChatMessage[] { const keyPoints = typeof subsection.keyPoints === 'string' ? JSON.parse(subsection.keyPoints) : (subsection.keyPoints || []); // 从 bookDescription 中提取写作风格 const styleMatch = bookDescription.match(/写作风格：([^\\n]+)/); const style = writingStyle || styleMatch?.[1] || ''; return [ { role: 'system', content: SUBSECTION_CONTENT_SYSTEM_PROMPT }, { role: 'user', content: `书名：《${topic}》 ${bookDescription || ''} ${style ? `写作风格：${style}` : ''} 章标题：${chapterTitle} 章概述：${chapterSummary || ''} 节标题：${sectionTitle} 节概述：${sectionSummary} 小节标题：${subsection.title} 小节概述：${subsection.summary || ''} 核心知识点：${keyPoints.join('、')} 预估字数：${subsection.estimatedWords || 500}字 请撰写该小节的正文内容。`, }, ]; } // ============ 类型转换 ============ function parseOutlineJson(jsonStr: string | null): BookOutline | null { if (!jsonStr) return null; try { return JSON.parse(jsonStr); } catch { return null; } } function chaptersFromDb(dbChapters: any[], bookId: number, excludeContent: boolean = false): Chapter[] { return dbChapters.map((c) => ({ id: String(c.id), bookId: String(c.bookId), number: c.number, title: c.title, content: excludeContent ? '' : (c.content || ''), wordCount: c.wordCount, summary: c.summary || undefined, generatedAt: c.generatedAt || undefined, error: c.errorMsg || undefined, audioUrl: c.audioUrl || undefined, audioDuration: c.audioDuration || 0, videoUrl: c.videoUrl || undefined, videoDuration: c.videoDuration || undefined, isPublic: c.isPublic || false, level: c.level, // 层级：1=章, 2=节, 3=小节 parentId: c.parentId, // 父节点ID（0表示章） genStage: c.genStage || undefined, // 线性阶段状态 })); } function outlineChapterFromDb(dbChapter: any) { return { number: dbChapter.number, title: dbChapter.title, summary: dbChapter.summary || '', keyPoints: dbChapter.keyPoints ? JSON.parse(dbChapter.keyPoints) : [], estimatedWords: dbChapter.estimatedWords, }; } // ============ 存储类 ============ export class BookStore { /** * 安全解析JSON */ private safeParseJson(jsonStr: string | null): any[] { if (!jsonStr) return []; try { return JSON.parse(jsonStr); } catch { return []; } } /** * 从数据库章节记录构建树形结构的outline */ private buildOutlineFromChapters(chapters: any[]): BookOutline | null { if (!chapters || chapters.length === 0) return null; // 获取所有level=1的章 const level1Chapters = chapters.filter(c => c.level === 1); if (level1Chapters.length === 0) return null; // 构建映射表 const chapterMap = new Map<number, any>(); const sectionMap = new Map<number, any>(); chapters.forEach(c => { if (c.level === 1) { chapterMap.set(c.id, { number: c.number, title: c.title, summary: c.summary || '', keyPoints: this.safeParseJson(c.keyPoints), estimatedWords: c.estimatedWords, sections: [] }); } else if (c.level === 2) { sectionMap.set(c.id, { number: c.number, title: c.title, summary: c.summary || '', keyPoints: this.safeParseJson(c.keyPoints), estimatedWords: c.estimatedWords, subsections: [] }); } }); // 构建节和小节的关系 chapters.forEach(c => { if (c.level === 2 && c.parentId) { const chapter = chapterMap.get(c.parentId); const section = sectionMap.get(c.id); if (chapter && section) { chapter.sections.push(section); } } else if (c.level === 3 && c.parentId) { const section = sectionMap.get(c.parentId); if (section) { section.subsections.push({ number: c.number, title: c.title, summary: c.summary || '', keyPoints: this.safeParseJson(c.keyPoints), estimatedWords: c.estimatedWords }); } } }); return { mainTheme: '', structureLogic: '', chapters: Array.from(chapterMap.values()) }; } /** * 创建书籍 */ async create(data: { userId?: number; title: string; subtitle?: string; description: string; targetAudience?: string; style?: string; bookScale?: string; totalChapters?: number; estimatedWords?: number; }): Promise<Book> { const book = await prisma.book.create({ data: { userId: data.userId, title: data.title, subtitle: data.subtitle, description: data.description, targetAudience: data.targetAudience || '通用', style: data.style || '专业严谨', bookScale: data.bookScale || '1000', totalChapters: data.totalChapters ?? 10, estimatedWords: data.estimatedWords ?? 0, genStage: 'draft', progress: 0, isPublished: false, // 预发布：等书籍完成后再发布 }, include: { chapters: true }, }); return this.toBook(book); } /** * 获取书籍 * @param id 书籍ID * @param filterPublic 是否过滤公开音频（默认false，返回所有） * @param userId 当前用户ID（用于判断是否所有者） */ async getById(id: string, filterPublic: boolean = false, userId?: number): Promise<Book | null> { const book = await prisma.book.findUnique({ where: { id: parseInt(id) }, include: { chapters: { orderBy: [ { level: 'asc' }, { number: 'asc' } ] } }, }); if (!book) return null; // 构建树形结构的outline（从数据库章节记录构建） let outline: BookOutline | null = null; try { outline = this.buildOutlineFromChapters(book.chapters); } catch (error) { console.error('[BookStore] buildOutlineFromChapters 失败:', error); } let result = this.toBook(book, false); // 需要返回章节content console.log('[BookStore.getById] bookScale:', result.bookScale); console.log('[BookStore.getById] result keys:', Object.keys(result)); // 用数据库构建的outline替换outlineJson解析的 if (outline) { result.outline = outline; } // 返回所有章节（level=1,2,3），前端需要完整数据来构建三级树形结构 // outline中已包含完整的树形结构(章→节→小节) // result.chapters = result.chapters.filter((c) => c.level === 1); // 旧代码：只返回章 // 如果需要过滤公开音频 if (filterPublic && userId) { const isOwner = book.userId === userId; result.chapters = result.chapters.filter((c) => { // 所有者可以看到所有音频 if (isOwner) return true; // 非所有者只能看到公开的音频 return c.audioUrl && c.isPublic === true; }); } return result; } /** * 按 bookId + number + level 查找章节记录 */ async findChapter(bookId: number, number: number, level: number): Promise<{ id: number; parentId: number | null; title: string } | null> { const chapter = await prisma.bookChapter.findFirst({ where: { bookId, number, level }, }); return chapter; } /** * 获取用户的所有书籍 * @param userId 当前用户ID * @param includePublic 是否包含公开书籍（用于首页显示） */ async getAllByUser(userId?: number, includePublic: boolean = true): Promise<Book[]> { let books; if (userId) { // 查询指定用户的书籍（包括 userId 为该用户或为 null 的书籍） // userId 为 null 表示"游客"创建的书籍，也返回给当前用户查看 books = await prisma.book.findMany({ where: { OR: [ { userId }, // 自己创建的书籍 { userId: null }, // 游客创建的书籍（兼容旧数据） ] }, include: { chapters: true }, orderBy: [{ updatedAt: 'desc' }, { id: 'desc' }], }); } else { // 未登录用户或不需要用户过滤 books = await prisma.book.findMany({ where: includePublic ? {} : undefined, include: { chapters: true }, orderBy: [{ updatedAt: 'desc' }, { id: 'desc' }], }); } return books.map((b) => this.toBook(b)); } /** * 获取公开的书籍列表（用于首页展示） * 只返回 isPublished=true 的书籍，且只返回有音频的章节 */ async getPublicBooks(): Promise<Book[]> { const books = await prisma.book.findMany({ where: { isPublished: true, chapters: { some: { audioUrl: { not: '' }, } } }, include: { chapters: { where: { audioUrl: { not: '' } }, // 只返回有音频的章节 orderBy: { number: 'asc' } }}, orderBy: [{ updatedAt: 'desc' }, { id: 'desc' }], }); return books.map((b) => this.toBook(b)); } /** * 更新书籍 */ async update(id: string, data: Partial<{ genStage: string; failedStage: string; progress: number; outlineJson: string; outline: any; foreword: string; afterword: string; estimatedWords: number; errorMsg: string; totalChapters: number; bookAnalysis: string; title: string; bookScale: string; }>): Promise<Book | null> { // 如果传入 outline 对象，转换为 outlineJson 字符串 const updateData: any = { ...data, updatedAt: new Date() }; if (data.outline) { updateData.outlineJson = JSON.stringify(data.outline); delete updateData.outline; } const book = await prisma.book.update({ where: { id: parseInt(id) }, data: updateData, include: { chapters: { where: { level: 1 }, orderBy: { number: 'asc' } } }, }); return this.toBook(book); } /** * 删除书籍 */ async delete(id: string): Promise<boolean> { try { await prisma.book.delete({ where: { id: parseInt(id) } }); return true; } catch { return false; } } /** * 创建章节 */ async createChapter(data: { bookId: string; number: number; title: string; summary?: string; keyPoints?: string[]; estimatedWords?: number; }): Promise<void> { await prisma.bookChapter.create({ data: { bookId: parseInt(data.bookId), number: data.number, title: data.title, summary: data.summary, keyPoints: data.keyPoints ? JSON.stringify(data.keyPoints) : null, estimatedWords: data.estimatedWords || 5000, genStage: 'outline_completed', }, }); } /** * 批量创建章节（支持重新生成） * 使用 upsert 避免唯一约束冲突 */ async createChapters(bookId: string, chapters: Array<{ number: number; title: string; summary?: string; keyPoints?: string[]; estimatedWords?: number; }>): Promise<void> { const bookIdNum = parseInt(bookId); // 使用 upsert 避免重复创建（parentId=0表示章级别） for (const c of chapters) { const upserted = await prisma.bookChapter.upsert({ where: { bookId_parentId_level_number: { bookId: bookIdNum, parentId: 0, level: 1, number: c.number, } }, update: { title: c.title, summary: c.summary, keyPoints: c.keyPoints ? JSON.stringify(c.keyPoints) : null, estimatedWords: c.estimatedWords || 5000, genStage: 'outline_completed', } as any, create: { bookId: bookIdNum, parentId: 0, level: 1, number: c.number, title: c.title, summary: c.summary, keyPoints: c.keyPoints ? JSON.stringify(c.keyPoints) : null, estimatedWords: c.estimatedWords || 5000, genStage: 'outline_completed', } as any, }); } } /** * 创建章节条目（支持任意层级：章/节/小节） * @param bookIdNum 书籍ID * @param item 节/小节数据 * @param parentId 父节点ID（null表示章这一级） * @param level 层级：1=章, 2=节, 3=小节 * @returns 创建的记录ID */ async createChapterItem(bookIdNum: number, item: { number: number; title: string; summary?: string; keyPoints?: string[]; estimatedWords?: number; }, parentId: number | null, level: number): Promise<number> { // 防御：LLM 可能返回 undefined/null 的字段 let chapterNumber = item.number; if (chapterNumber == null || chapterNumber === undefined || isNaN(chapterNumber as number)) { const maxExisting = await prisma.bookChapter.findFirst({ where: { bookId: bookIdNum, parentId: parentId ?? 0, level }, orderBy: { number: 'desc' }, select: { number: true }, }); chapterNumber = (maxExisting?.number ?? 0) + 1; console.warn(`[BookStore] chapter number missing/invalid, auto-assigned: ${chapterNumber} (bookId=${bookIdNum}, level=${level})`); } // 防御：title 也不能是 undefined const safeTitle = item.title || `章节${chapterNumber}`; if (!item.title) { console.warn(`[BookStore] chapter title missing, using fallback: ${safeTitle} (bookId=${bookIdNum})`); } // 使用 upsert 避免重复创建 const upserted = await prisma.bookChapter.upsert({ where: { bookId_parentId_level_number: { bookId: bookIdNum, parentId: parentId, level: level, number: chapterNumber, } }, update: { title: safeTitle, summary: item.summary || '', keyPoints: item.keyPoints ? JSON.stringify(item.keyPoints) : null, estimatedWords: item.estimatedWords || 1000, genStage: 'outline_completed', } as any, create: { bookId: bookIdNum, parentId, level, number: chapterNumber, title: safeTitle, summary: item.summary || '', keyPoints: item.keyPoints ? JSON.stringify(item.keyPoints) : null, estimatedWords: item.estimatedWords || 1000, genStage: 'outline_completed', } as any, }); return upserted.id; } /** * 批量创建章节条目 */ async createChapterItems(bookIdNum: number, items: Array<{ number: number; title: string; summary?: string; keyPoints?: string[]; estimatedWords?: number; }>, parentId: number | null, level: number): Promise<number[]> { const ids: number[] = []; for (const item of items) { const id = await this.createChapterItem(bookIdNum, item, parentId, level); ids.push(id); } return ids; } /** * 更新章节内容 * @param level 可选层级过滤，避免同 number 不同 level 的章节串写 */ async updateChapter(bookId: string, chapterNumber: number, data: Partial<{ content: string; wordCount: number; genStage: string; errorMsg: string; }>, level?: number): Promise<Chapter | null> { const where: any = { bookId: parseInt(bookId), number: chapterNumber, }; if (level !== undefined) where.level = level; const chapter = await prisma.bookChapter.findFirst({ where }); if (!chapter) return null; const updated = await prisma.bookChapter.update({ where: { id: chapter.id }, data: { ...data, generatedAt: data.content ? new Date() : undefined, }, }); return { id: String(updated.id), bookId: String(updated.bookId), number: updated.number, title: updated.title, content: updated.content || '', wordCount: updated.wordCount, genStage: updated.genStage as ChapterGenStage | undefined, summary: updated.summary || undefined, generatedAt: updated.generatedAt || undefined, error: (updated as any).errorMsg || undefined, }; } /** * 按 ID 更新章节内容 */ async updateChapterById(id: number, data: Partial<{ content: string; wordCount: number; genStage: string; errorMsg: string; contentError: string; audioUrl: string; audioDuration: number; lrcLyrics: string | null; videoUrl: string; videoDuration: number; }>): Promise<Chapter | null> { // 转换 errorMsg -> contentError (Prisma字段名) const prismaData: any = { ...data }; if ('errorMsg' in prismaData) { prismaData.contentError = prismaData.errorMsg; delete prismaData.errorMsg; } const updated = await prisma.bookChapter.update({ where: { id }, data: { ...prismaData, generatedAt: data.content ? new Date() : undefined, }, }); return { id: String(updated.id), bookId: String(updated.bookId), number: updated.number, title: updated.title, content: updated.content || '', wordCount: updated.wordCount, genStage: updated.genStage as ChapterGenStage | undefined, summary: updated.summary || undefined, generatedAt: updated.generatedAt || undefined, error: updated.contentError || undefined, audioUrl: updated.audioUrl || undefined, audioDuration: updated.audioDuration || 0, videoUrl: updated.videoUrl || undefined, videoDuration: updated.videoDuration || undefined, }; } /** * 获取书籍的章节 */ async getChapters(bookId: string): Promise<Chapter[]> { const chapters = await prisma.bookChapter.findMany({ where: { bookId: parseInt(bookId) }, orderBy: { number: 'asc' }, }); return chaptersFromDb(chapters, parseInt(bookId)); } /** * 获取书籍的完整章节树（章→节→小节） * 按 level 和 number 排序 */ async getChapterTree(bookId: string): Promise<any[]> { const chapters = await prisma.bookChapter.findMany({ where: { bookId: parseInt(bookId) }, orderBy: [{ level: 'asc' }, { number: 'asc' }], }); return chapters; } /** * 统计书籍完成章节数 */ async countCompletedChapters(bookId: string): Promise<number> { return prisma.bookChapter.count({ where: { bookId: parseInt(bookId), genStage: 'video_completed', }, }); } /** * 发布书籍（将 isPublished 设为 true，同时公开所有章节） */ async publishAlbum(bookId: string): Promise<void> { await prisma.$transaction([ prisma.book.update({ where: { id: parseInt(bookId) }, data: { isPublished: true }, }), // 公开所有有音频的章节 prisma.bookChapter.updateMany({ where: { bookId: parseInt(bookId), audioUrl: { not: '' }, }, data: { isPublic: true }, }), ]); } /** * 取消发布书籍（将 isPublished 设为 false，同时取消公开所有章节） */ async unpublishAlbum(bookId: string): Promise<void> { await prisma.$transaction([ prisma.book.update({ where: { id: parseInt(bookId) }, data: { isPublished: false }, }), // 取消公开所有章节 prisma.bookChapter.updateMany({ where: { bookId: parseInt(bookId), }, data: { isPublic: false }, }), ]); } /** * 切换书籍公开状态 */ async togglePublish(bookId: string): Promise<boolean> { const book = await prisma.book.findUnique({ where: { id: parseInt(bookId) }, select: { isPublished: true }, }); const newStatus = !book?.isPublished; if (newStatus) { await this.publishAlbum(bookId); } else { await this.unpublishAlbum(bookId); } return newStatus; } /** * 为书籍章节生成音频并关联（更新 BookChapter.audioUrl） */ async generateChapterAudio(bookId: string, chapterNumber: number, userId?: number): Promise<{ audioUrl: string; } | null> { const chapter = await prisma.bookChapter.findFirst({ where: { bookId: parseInt(bookId), number: chapterNumber }, include: { book: true }, }); if (!chapter || !chapter.content) { return null; } // 生成音频（异步模式，通过回调更新章节） const result = await generateAudio( userId ? String(userId) : String(chapter.book?.userId || '0'), chapter.content, 'longyingling_v3', { speed: 1.0, pitch: 0, volume: 50 }, async (audioUrl: string, duration: number) => { // 音频生成完成后更新章节 await prisma.bookChapter.update({ where: { id: chapter.id }, data: { audioUrl, audioDuration: duration, }, }); console.log(`✅ 章节${chapterNumber}音频生成完成:`, audioUrl); } ); return { audioUrl: result.audioUrl, // 初始为空字符串，实际URL通过回调更新 }; } /** * 按 ID 生成章节音频（数据库队列 + 内容哈希去重） * * 流程： * 1. 计算内容 SHA256 哈希 * 2. 检查是否已有相同哈希的已完成任务 → 复用 * 3. 检查是否有进行中的任务 → 跳过（不中断） * 4. 创建 TtsTask 记录 → 队列处理器异步执行 * * 关键保护： * - 同一内容不会重复生成 TTS * - 已在 audio_generating 的章节不会被回退 * - 无递归调用，重试由队列处理器平铺循环控制 */ async generateChapterAudioById(chapterId: number, userId?: number, voiceId?: string): Promise<{ audioUrl: string; } | null> { // ===== 步骤 1：读取章节状态 ===== const chapterBefore = await prisma.bookChapter.findUnique({ where: { id: chapterId }, include: { book: true }, }); if (!chapterBefore) { console.warn(`[Audio] 章节不存在: ${chapterId}`); return null; } // 检查内容是否存在 if (!chapterBefore.content || chapterBefore.genStage === 'idle') { console.warn(`[Audio] 章节内容未生成完成: ${chapterId}, genStage: ${chapterBefore.genStage}`); return null; } // ===== 步骤 2：内容哈希去重 ===== const contentHash = computeContentHash(chapterBefore.content); // 2a. 检查是否有相同内容的已完成 TTS 任务 const existingCompleted = await prisma.ttsTask.findFirst({ where: { chapterId, taskType: 'tts', contentHash, status: 'completed' }, orderBy: { completedAt: 'desc' }, }); if (existingCompleted?.audioUrl) { // 章节的 audioUrl 还在 → 内容没变、音频也没被清 → 可安全复用 if (chapterBefore.audioUrl) { console.log(`[Audio] 章节${chapterId}内容未变化，复用已有音频`); return { audioUrl: chapterBefore.audioUrl }; } // audioUrl 已被清空（可能用户主动重整音频）→ 不复用，走新建任务 console.log(`[Audio] 章节${chapterId}内容未变但音频已清空，重新生成`); } // 2b. 检查是否有进行中的 TTS 任务（pending 或 processing） const inProgressTask = await prisma.ttsTask.findFirst({ where: { chapterId, taskType: 'tts', status: { in: ['pending', 'processing'] } }, }); if (inProgressTask) { console.log(`[Audio] 章节${chapterId}已有进行中的任务#${inProgressTask.id}(状态=${inProgressTask.status})，不重复创建`); return { audioUrl: '' }; // 返回空，前端通过 genStage 轮询 } // ===== 步骤 3：已有音频且 genStage 正确 → 直接返回 ===== const alreadyDoneStages = ['audio_completed', 'video_generating', 'video_completed']; if (alreadyDoneStages.includes(chapterBefore.genStage) && chapterBefore.audioUrl) { console.log(`[Audio] 章节${chapterId}音频已就绪(genStage=${chapterBefore.genStage})，跳过`); return { audioUrl: chapterBefore.audioUrl }; } // ===== 步骤 4：推进 genStage 到 audio_generating ===== // 如果已是 audio_generating，说明之前的任务中断了，先回退再前进 if (chapterBefore.genStage === 'audio_generating') { console.log(`[Audio] 章节${chapterId}上次生成中断，回退后重新排队`); await regenerateChapter(chapterId, 'content_completed').catch(() => {}); } // 如果已是 audio_completed/video_* 等更后的阶段，也先回退 if (alreadyDoneStages.includes(chapterBefore.genStage) || chapterBefore.genStage === 'video_completed') { await regenerateChapter(chapterId, 'content_completed').catch(() => {}); } await advanceChapter(chapterId, 'audio_generating'); // 注：移除乐观锁二次检查。advanceChapter 自身使用 safeTransitionChapter // （乐观锁 UPDATE ... WHERE genStage=current），如果冲突会返回 count=0 // 而不会错误推进。二次检查在高并发下可能误判合法请求。 // ===== 步骤 5：复用已有 failed 任务或创建新任务 ===== // 关键：同一 chapterId 只能有一个活跃任务，避免重复创建 const existingFailed = await prisma.ttsTask.findFirst({ where: { chapterId, taskType: 'tts', status: 'failed' }, orderBy: { createdAt: 'desc' }, }); let task: any; if (existingFailed) { // 复用已有 failed 任务，重置为 pending，但累加 retryCount（保留历史重试记录） const prevRetryCount = existingFailed.retryCount || 0; // 关键：更新 voiceId 为当前有效的音色，避免旧任务用已禁用的 MiniMax 音色导致循环失败 const taskVoiceId = voiceId || 'longyingling_v3'; task = await prisma.ttsTask.update({ where: { id: existingFailed.id }, data: { status: 'pending', content: chapterBefore.content, contentHash, voiceId: taskVoiceId, retryCount: prevRetryCount, // 保留历史重试次数，不重置为0 errorMsg: null, startedAt: null, completedAt: null, }, }); console.log(`[Audio] 复用已有任务#${existingFailed.id}: chapterId=${chapterId}, voiceId=${taskVoiceId}, 累计重试=${prevRetryCount}次`); } else { console.log(`[Audio] 创建TTS任务: chapterId=${chapterId}, 内容长度=${chapterBefore.content.length}, hash=${contentHash.substring(0, 12)}...`); task = await prisma.ttsTask.create({ data: { taskType: 'tts', chapterId, bookId: chapterBefore.bookId, userId: userId || chapterBefore.book?.userId || null, contentHash, content: chapterBefore.content, // 保存提交时的内容副本 voiceId: voiceId || 'longyingling_v3', // 支持外部传入音色，默认兼容有声书 status: 'pending', }, }); console.log(`[Audio] TTS任务 #${task.id} 已创建，等待队列处理器处理`); } // 返回空 audioUrl，前端通过 genStage 或 WebSocket 获取进度 return { audioUrl: '' }; } /** * [DEPRECATED] 创建章节内容生成任务（数据库队列 + 内容哈希去重） * * ⚠️ 当前无 content 队列处理器（tts-queue.ts仅创建了tts队列）。 * 内容生成已改为 LangGraph 节点直接调用 LLM，不再使用数据库队列。 * 此方法保留仅用于向后兼容，请勿调用。 * * 与 TTS 队列共用 TtsTask 表，通过 taskType='content' 区分。 * hash 基于章节关键属性（标题、父级、预估字数等）， * 相同参数不重复提交 LLM 请求。 * * @returns taskId 或 null（如果已有进行中/已完成任务） */ async enqueueContentGeneration(chapterId: number, bookId?: number): Promise<number | null> { const chapter = await prisma.bookChapter.findUnique({ where: { id: chapterId }, include: { book: true }, }); if (!chapter) { console.warn(`[Content] 章节不存在: ${chapterId}`); return null; } // ===== 拼接关键属性计算哈希 ===== const attrString = [ chapter.bookId, chapter.title, chapter.parentId, chapter.level, chapter.estimatedWords, ].join('|'); const contentHash = computeContentHash(attrString); // 去重：已完成的内容任务 const existingCompleted = await prisma.ttsTask.findFirst({ where: { chapterId, taskType: 'content', contentHash, status: 'completed' }, orderBy: { completedAt: 'desc' }, }); if (existingCompleted) { console.log(`[Content] 章节${chapterId}相同参数已有完成记录(hash=${contentHash.substring(0, 8)}...)，跳过`); return null; } // 去重：进行中的任务 const inProgressTask = await prisma.ttsTask.findFirst({ where: { chapterId, taskType: 'content', status: { in: ['pending', 'processing'] } }, }); if (inProgressTask) { console.log(`[Content] 章节${chapterId}已有进行中的内容任务#${inProgressTask.id}，不重复创建`); return inProgressTask.id; } // 已有内容且 genStage 正常 → 跳过 if (chapter.content && ['content_completed', 'audio_generating', 'audio_completed'].includes(chapter.genStage)) { console.log(`[Content] 章节${chapterId}已有内容(genStage=${chapter.genStage})，跳过`); return null; } // 推进状态 if (chapter.genStage !== 'content_generating') { if (chapter.genStage !== 'idle' && chapter.genStage !== 'outline_completed') { await regenerateChapter(chapterId, 'content_generating').catch(() => {}); } else { await advanceChapter(chapterId, 'content_generating').catch(() => {}); } } const task = await prisma.ttsTask.create({ data: { taskType: 'content', chapterId, bookId: bookId || chapter.bookId, userId: chapter.book?.userId || null, contentHash, content: attrString, // 保存提交时的属性快照 status: 'pending', }, }); console.log(`[Content] 内容任务 #${task.id} 已创建, chapterId=${chapterId}, hash=${contentHash.substring(0, 12)}...`); return task.id; } /** * 处理内容生成队列任务（由 ContentQueue 调用） * * [DEPRECATED] 实际的 LLM 文本生成逻辑，平铺循环重试（最多 3 次），无递归。 * * ⚠️ 无 content 队列处理器调用此方法。内容生成由 LangGraph 节点直接完成。 */ async processContentTask(taskId: number): Promise<void> { const task = await prisma.ttsTask.findUnique({ where: { id: taskId } }); if (!task || task.status !== 'processing' || task.taskType !== 'content') { console.warn(`[ContentTask] 任务#${taskId}状态异常，跳过`); return; } const chapterId = task.chapterId; console.log(`[ContentTask] 开始处理任务#${taskId}, chapterId=${chapterId}`); const MAX_RETRIES = 3; for (let attempt = 0; attempt <= MAX_RETRIES; attempt++) { try { console.log(`[ContentTask] #${taskId} 第${attempt + 1}次尝试生成内容...`); const chapter = await prisma.bookChapter.findUnique({ where: { id: chapterId }, include: { book: true }, }); if (!chapter) { await this._failTask(taskId, `章节${chapterId}不存在`); return; } const bookId = String(chapter.bookId); // 委托给现有的生成方法（它已经包含完整的 LLM 调用逻辑） await this.generateSingleChapterContent(bookId, chapterId); // 验证生成结果 const updated = await prisma.bookChapter.findUnique({ where: { id: chapterId } }); if (updated?.content && updated.genStage === 'content_completed') { await prisma.ttsTask.update({ where: { id: taskId }, data: { status: 'completed', completedAt: new Date(), retryCount: attempt, }, }); console.log(`[ContentTask] ✅ 任务#${taskId} 完成`); await this.tryCleanupBookTasks(chapterId); return; } // 内容为空或状态不对 → 视为失败 throw new Error(updated?.content ? `状态异常: ${updated.genStage}` : '生成内容为空'); } catch (err: any) { const errorMsg = err?.message || String(err); console.error(`[ContentTask] ❌ 任务#${taskId} 第${attempt + 1}次失败:`, errorMsg); if (attempt < MAX_RETRIES) { const delay = Math.min(3000 * Math.pow(2, attempt) + Math.random() * 2000, 60000); console.log(`[ContentTask] #${taskId} ${(delay / 1000).toFixed(1)}s 后重试...`); await prisma.ttsTask.update({ where: { id: taskId }, data: { retryCount: attempt + 1, errorMsg: errorMsg.substring(0, 500) }, }); await new Promise(resolve => setTimeout(resolve, delay)); continue; } await this._failTask(taskId, errorMsg); return; } } await this._failTask(taskId, '重试耗尽'); } /** * 等待内容生成队列任务完成（调用方轮询，最多等待 30 分钟） * * @returns 生成后的章节内容 */ async awaitContentTask(taskId: number, timeoutMs: number = 30 * 60 * 1000): Promise<{ content: string; wordCount: number; genStage: string; }> { const task = await prisma.ttsTask.findUnique({ where: { id: taskId } }); if (!task) throw new Error(`任务#${taskId}不存在`); if (task.taskType !== 'content') throw new Error(`任务#${taskId}不是内容生成类型`); const start = Date.now(); let lastLogTime = 0; while (Date.now() - start < timeoutMs) { const chapter = await prisma.bookChapter.findUnique({ where: { id: task.chapterId }, select: { content: true, wordCount: true, genStage: true, contentError: true }, }); if (!chapter) throw new Error(`章节${task.chapterId}不存在`); // 完成 if (chapter.genStage === 'content_completed' && chapter.content) { console.log(`[ContentTask] 任务#${taskId} 轮询完成 (${((Date.now() - start) / 1000).toFixed(0)}s)`); return { content: chapter.content, wordCount: chapter.wordCount, genStage: 'content_completed' }; } // 失败 if (chapter.genStage === 'failed') { const updated = await prisma.ttsTask.findUnique({ where: { id: taskId }, select: { errorMsg: true } }); throw new Error(updated?.errorMsg || chapter.contentError || '内容生成失败'); } // 进度日志（每 30 秒） const now = Date.now(); if (now - lastLogTime > 30000) { lastLogTime = now; const elapsed = ((now - start) / 1000).toFixed(0); console.log(`[ContentTask] 任务#${taskId} 等待中... genStage=${chapter.genStage}, 已等${elapsed}s`); } await new Promise(resolve => setTimeout(resolve, 3000)); } throw new Error(`内容生成超时 (${timeoutMs / 1000}s)`); } /** * 处理 TTS 队列任务（由 tts-queue.ts 调用） * * 只尝试 1 次。Provider 层会自动遍历所有可用 Provider。 * 失败后标记 failed，由用户手动重新生成。 */ async processTtsTask(taskId: number): Promise<void> { const task = await prisma.ttsTask.findUnique({ where: { id: taskId } }); if (!task || task.status !== 'processing') { console.warn(`[TtsTask] 任务#${taskId}状态异常(status=${task?.status})，跳过`); return; } const chapterId = task.chapterId; const content = task.content; if (!content) { await this._failTask(taskId, '任务内容为空'); return; } // 最小字数校验：过短文本 TTS API 会报 InvalidParameter，触发熔断 if (content.trim().length < 10) { await this._failTask(taskId, '文本过短（少于10字），无法生成音频'); return; } console.log(`[TtsTask] 开始处理任务#${taskId}, chapterId=${chapterId}, 内容长度=${content.length}`); try { const chapter = await prisma.bookChapter.findUnique({ where: { id: chapterId }, include: { book: true }, }); if (!chapter) { await this._failTask(taskId, `章节${chapterId}不存在`); return; } const result = await generateAudio( String(task.userId || chapter.book?.userId || '0'), content, task.voiceId || 'longyingling_v3', // 使用任务中的音色，兼容旧数据 { speed: 1.0, pitch: 0, volume: 50 }, async (audioUrl: string, duration: number) => { console.log(`[TtsTask] #${taskId} 音频就绪: ${audioUrl?.substring(0, 60)}...`); try { await advanceChapter(chapterId, 'audio_completed'); try { const userId = chapter.book?.userId || task.userId || 1; const audioMinutes = Math.ceil(duration / 60); await consumeAudioMinutes(userId, audioMinutes, `书籍「${chapter.book?.title || '未知'}」- ${chapter.title} (${duration}s)`); } catch (quotaErr: any) { console.warn(`[Quota] 消耗音频配额失败:`, quotaErr.message); } tryAutoMerge(chapterId, chapter.bookId, chapter.level, chapter.parentId); } catch (advanceErr: any) { console.warn(`[TtsTask] #${taskId} genStage推进失败: ${advanceErr.message}，音频已就绪`); } }, { bookId: chapter.bookId ? String(chapter.bookId) : undefined, chapterId: chapter.id, chapterTitle: chapter.title, } ); await prisma.ttsTask.update({ where: { id: taskId }, data: { status: 'completed', audioUrl: result.audioUrl, completedAt: new Date() }, }); console.log(`[TtsTask] ✅ 任务#${taskId} 完成`); logAiCall({ callType: 'tts_task_completed', provider: 'tts', model: 'tts-task', textLen: content?.length || 0, success: true, chapterId, bookId: task.bookId ?? undefined }); await this.tryCleanupBookTasks(chapterId); } catch (err: any) { const errorMsg = err?.message || String(err); console.error(`[TtsTask] ❌ 任务#${taskId} 失败:`, errorMsg); logAiCall({ callType: 'tts_task_failed', provider: 'tts', model: 'tts-task', textLen: content?.length || 0, success: false, errorMsg, chapterId, bookId: task.bookId ?? undefined }); await this._failTask(taskId, errorMsg); // 不可恢复错误（参数错误等）→ 标记章节为 failed，阻止 AudioScanner 反复重试 const lowerMsg = errorMsg.toLowerCase(); if (lowerMsg.includes('invalidparameter') || lowerMsg.includes('invalid_parameter')) { try { await prisma.bookChapter.update({ where: { id: chapterId }, data: { genStage: 'failed', contentError: errorMsg.substring(0, 500) }, }); console.log(`[TtsTask] 🔒 章节${chapterId}标记为failed（不可恢复错误），不再自动重试`); } catch (chapterErr) { console.warn(`[TtsTask] 标记章节失败状态失败:`, chapterErr); } } } } /** * 标记任务失败（不回退章节状态，由用户手动重新生成） */ private async _failTask(taskId: number, errorMsg: string): Promise<void> { console.error(`[TtsTask] ❌ 任务#${taskId} 最终失败:`, errorMsg); await prisma.ttsTask.update({ where: { id: taskId }, data: { status: 'failed', errorMsg: errorMsg.substring(0, 1000), completedAt: new Date(), }, }); } /** * 任务成功后尝试清理整本书的任务记录 * 当一本书所有章节都已生成完毕（>= audio_completed），清空该书的所有队列任务 */ private async tryCleanupBookTasks(chapterId: number): Promise<void> { try { const chapter = await prisma.bookChapter.findUnique({ where: { id: chapterId }, select: { bookId: true }, }); if (!chapter?.bookId) return; // 检查该书的章节是否全部完成 const allChapters = await prisma.bookChapter.findMany({ where: { bookId: chapter.bookId }, select: { genStage: true }, }); if (allChapters.length === 0) return; const doneStages = ['audio_completed', 'video_generating', 'video_completed']; const allDone = allChapters.every(c => doneStages.includes(c.genStage)); if (!allDone) return; // 全书完成，清理任务记录 const result = await prisma.ttsTask.deleteMany({ where: { bookId: chapter.bookId }, }); if (result.count > 0) { console.log(`[Cleanup] 书籍#${chapter.bookId}已完成，清理了 ${result.count} 条队列任务`); } } catch (err: any) { console.warn(`[Cleanup] 清理任务失败:`, err.message); } } /** * 重新生成单个章节内容（仅叶节点） * 直接生成，不触发整个书籍生成流程 */ async generateSingleChapterContent(bookId: string, chapterId: number): Promise<void> { const book = await this.getById(bookId); if (!book) { console.error(`[generateSingleChapterContent] 书籍不存在: ${bookId}`); return; } const chapter = await prisma.bookChapter.findUnique({ where: { id: chapterId }, }); if (!chapter) { console.error(`[generateSingleChapterContent] 章节不存在: ${chapterId}`); return; } // 构建父节点映射 const chaptersAndSections = await prisma.bookChapter.findMany({ where: { bookId: parseInt(bookId), level: { in: [1, 2] } } }); const chapterMap = new Map<number, any>(); const sectionMap = new Map<number, any>(); chaptersAndSections.forEach(c => { if (c.level === 1) chapterMap.set(c.id, c); if (c.level === 2) sectionMap.set(c.id, c); }); const parentSection = sectionMap.get(chapter.parentId || 0); const parentChapter = parentSection ? chapterMap.get(parentSection.parentId || 0) : null; const chapterTitle = parentChapter?.title || '未知章'; const sectionTitle = parentSection?.title || '未知节'; const chapterSummary = parentChapter?.summary || ''; const sectionSummary = parentSection?.summary || ''; // 判断是否是短文 const isShortArticle = !parentSection && chapter.level === 1; // 从 description 中提取写作风格要求 const styleMatch = book.description?.match(/写作风格：([^\\n]+)/); const writingStyle = styleMatch ? styleMatch[1] : (book.style || ''); let messages: ChatMessage[]; if (isShortArticle) { messages = [ { role: 'system', content: SUBSECTION_CONTENT_SYSTEM_PROMPT }, { role: 'user', content: `书名：《${book.title}》 ${book.description || ''} ${writingStyle ? `写作风格：${writingStyle}` : ''} 章标题：${chapter.title} 章概述：${chapter.summary || ''} 预估字数：${chapter.estimatedWords || 500}字 请撰写该章节的正文内容。`, }, ]; } else { messages = buildSubsectionContentMessages( book.title, book.description || '', chapterTitle, chapterSummary, sectionTitle, sectionSummary, chapter ); } const bookTools = createBookTools(bookId, this); try { let content: string; try { const result = await callLLMWithTools(messages, bookTools); content = cleanThinkingText(result.text); } catch { content = cleanThinkingText(await callLLMWithMessages(messages)); } const wordCount = countWords(content); await this.updateChapterById(chapterId, { content, wordCount, }); // 推进到 content_completed（如已越过则跳过，不抛异常） const currentChapter = await prisma.bookChapter.findUnique({ where: { id: chapterId } }); if (currentChapter) { const order = ['idle', 'outline_completed', 'content_generating', 'content_completed', 'audio_generating', 'audio_completed', 'video_generating', 'video_completed']; const curIdx = order.indexOf(currentChapter.genStage); const tgtIdx = order.indexOf('content_completed'); // 只有当前在 content_completed 之前才推进（避免竞态：音频已推进到 audio_generating） if (curIdx >= 0 && curIdx < tgtIdx) { try { // 状态机要求：outline_completed → content_generating → content_completed if (currentChapter.genStage !== 'content_generating') { await advanceChapter(chapterId, 'content_generating').catch(() => {}); } await advanceChapter(chapterId, 'content_completed'); } catch (advanceErr: any) { console.warn(`[generateSingleChapterContent] genStage推进失败 chapterId=${chapterId}: ${advanceErr.message}, 可能已被其他流程推进`); } } } console.log(`✅ 章节「${chapter.title}」内容重新生成完成，字数: ${wordCount}`); } catch (error) { const errorMsg = error instanceof Error ? error.message : '失败'; await this.updateChapterById(chapterId, { contentError: errorMsg, }); // 仅当LLM调用失败时才回退到 content_generating console.error(`❌ 章节${chapterId}内容重新生成失败:`, errorMsg); } } /** * 转换数据库模型到 Book 类型 * @param excludeContent 是否排除章节内容（用于列表/详情页，只返回标题不返回正文） */ private toBook(dbBook: { id: number; userId: number | null; title: string; subtitle: string | null; description: string; targetAudience: string; style: string; bookScale: string; totalChapters: number; estimatedWords: number; progress: number; isPublished: boolean; genStage?: string; failedStage?: string; outlineJson: string | null; foreword: string | null; afterword: string | null; errorMsg: string | null; bookAnalysis?: string | null; createdAt: Date; updatedAt: Date; chapters: any[]; }, excludeContent: boolean = false): Book { const outline = parseOutlineJson(dbBook.outlineJson); return { id: String(dbBook.id), userId: dbBook.userId || undefined, title: dbBook.title, subtitle: dbBook.subtitle || undefined, description: dbBook.description, targetAudience: dbBook.targetAudience, style: dbBook.style, bookScale: dbBook.bookScale, totalChapters: dbBook.totalChapters, estimatedWords: dbBook.estimatedWords, progress: dbBook.progress, isPublished: dbBook.isPublished, genStage: computeBookGenStage(dbBook.chapters), failedStage: dbBook.failedStage || undefined, chapters: chaptersFromDb(dbBook.chapters, dbBook.id, excludeContent), outline: outline || undefined, metadata: { foreword: dbBook.foreword || undefined, afterword: dbBook.afterword || undefined, }, bookAnalysis: dbBook.bookAnalysis || undefined, error: dbBook.errorMsg || undefined, createdAt: dbBook.createdAt, updatedAt: dbBook.updatedAt, }; } } // 导出单例 export const bookStore = new BookStore(); |