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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 | /** * 一步大纲生成节点（fullOutlineNode） * 一次 AI 调用生成完整树形大纲：章 + 节 + 小节 * 适用于策略2（one-step-outline） */ import { GraphState } from '../graph'; import { bookStore } from '../book-generator.store'; import { callLLMWithMessages, ChatMessage } from '../../../services/llm'; import { callLLMWithRetry, executeNodeWithTimeout, FAULT_TOLERANCE_CONFIG } from '../fault-tolerance'; import { PROGRESS } from '../utils'; import { getScaleConfig } from '../book-type-config'; import { prisma } from '../../../models'; /** * 构建一步大纲的提示词 */ function buildFullOutlinePrompt( title: string, description: string, bookScale: string, genLevel: number, bookPlan?: any ): ChatMessage[] { const config = getScaleConfig(bookScale); const totalWords = config?.totalWords || 130000; const levelDesc: Record<number, string> = { 1: '仅章：只生成章节列表，不要节和小节。每章直接展开写。', 2: '章→节：每章下生成若干节，但节下不要再拆小节。', 3: '章→节→小节：每章下生成节，节下再生成小节，完整三层结构。', }; // 规划参考 let planSection = ''; if (bookPlan) { const parts: string[] = []; if (bookPlan.writingStyle) parts.push(`写作风格：${bookPlan.writingStyle}`); if (bookPlan.structureLogic) parts.push(`结构逻辑：${bookPlan.structureLogic}`); if (bookPlan.contentDepth) parts.push(`内容深度：${bookPlan.contentDepth}`); if (bookPlan.targetAudienceAnalysis) parts.push(`目标读者：${bookPlan.targetAudienceAnalysis}`); if (bookPlan.bookTypeAnalysis) parts.push(`书籍分析：${bookPlan.bookTypeAnalysis}`); if (parts.length > 0) planSection = `\n\n## 前序规划参考\n${parts.join('\n')}`; } const systemPrompt = `你是一位专业的图书策划编辑。请为以下书籍一次性生成完整的树形大纲。 ## 大纲层级要求 ${levelDesc[genLevel] || levelDesc[2]} ## 约束 - 总字数约${totalWords}字，章节数和字数分配要合理 - 每章 2-4 节，每节 2-4 小节（仅当 genLevel=3 时需要小节） - 章节之间必须有清晰的逻辑递进关系 - 预估字数要符合章节内容量 ## 工作要求 1. 每章必须有摘要和核心知识点 2. 每节/每小节也必须有摘要和知识点 3. 所有内容一次性输出${planSection} ## 输出格式 必须返回合法的 JSON，不要包含任何 markdown 代码块标记或其他文字： { "mainTheme": "主题一句话描述", "structureLogic": "章节组织逻辑说明", "chapters": [ { "number": 1, "title": "章标题", "summary": "章摘要", "keyPoints": ["知识点1"], "estimatedWords": 2000, "sections": [ { "number": 1, "title": "节标题", "summary": "节摘要", "keyPoints": ["知识点1"], "estimatedWords": 1000, "subsections": [ { "number": 1, "title": "小节标题", "summary": "小节摘要", "keyPoints": ["知识点1"], "estimatedWords": 500 } ] } ] } ] } 注意：genLevel=1 时每章不要 sections genLevel=2 时每章的 sections 下不要 subsections genLevel=3 时才需要完整的 sections + subsections`; return [ { role: 'system', content: systemPrompt }, { role: 'user', content: `书名：《${title}》\n${description ? `需求描述：${description}\n` : ''}\n请生成完整大纲。`, }, ]; } /** * 解析一步大纲的 JSON */ function parseFullOutline(jsonStr: string): any | null { try { let cleaned = jsonStr.trim(); const thinkEnd = cleaned.indexOf('</think>'); if (thinkEnd !== -1) cleaned = cleaned.substring(thinkEnd + 8).trim(); const match = cleaned.match(/\{[\s\S]*\}/); if (!match) return null; const data = JSON.parse(match[0]); if (!data.chapters || !Array.isArray(data.chapters) || data.chapters.length === 0) { return null; } return data; } catch { return null; } } /** * 一步大纲生成节点 * 从章到节到小节一次生成，并全部存入数据库 */ export async function generateFullOutlineNode(state: typeof GraphState.State): Promise<Partial<typeof GraphState.State>> { console.log('[FullOutline] 一步生成完整大纲, bookId:', state.bookId, 'genLevel:', state.genLevel); // 读取规划结果 let bookPlan: any = null; if (state.bookPlan) { try { bookPlan = JSON.parse(state.bookPlan); } catch { /* ignore */ } } try { const book = await bookStore.getById(state.bookId); const title = book?.title || state.topic; const description = book?.description || ''; const response = await executeNodeWithTimeout( state.bookId, 'generate_outline', async () => { return callLLMWithRetry( buildFullOutlinePrompt(title, description, state.bookScale, state.genLevel, bookPlan), undefined, { bookId: state.bookId, nodeId: 'generate_full_outline', attempt: 0, maxAttempts: FAULT_TOLERANCE_CONFIG.aiRetry.maxRetries } ); }, FAULT_TOLERANCE_CONFIG.nodeTimeout.generate_outline ); const outline = parseFullOutline(response); if (!outline) throw new Error('一步大纲解析失败'); // 存入数据库 const totalChapters = outline.chapters.length; // 保存 outlineJson（必须，因为 GET 接口依赖此字段） await bookStore.update(state.bookId, { totalChapters, outlineJson: JSON.stringify(outline), progress: PROGRESS.OUTLINE_DONE, // 清理旧的失败状态（重试成功时） failedStage: null, errorMsg: null, }); // 将所有层级（章+节+小节）的章节记录存入数据库 const allRecords: Array<{ number: number; title: string; summary: string; keyPoints: string[]; estimatedWords: number; parentId: number; level: number; }> = []; for (let i = 0; i < outline.chapters.length; i++) { const chapter = outline.chapters[i]; // 先占位创建章 const chapterId = await createChapterRecord(state.bookId, { number: chapter.number ?? (i + 1), title: chapter.title, summary: chapter.summary, keyPoints: chapter.keyPoints, estimatedWords: chapter.estimatedWords, }, 0, 1); if (chapter.sections && state.genLevel >= 2) { for (let j = 0; j < chapter.sections.length; j++) { const section = chapter.sections[j]; const sectionId = await createChapterRecord(state.bookId, { number: section.number ?? (j + 1), title: section.title, summary: section.summary || '', keyPoints: section.keyPoints || [], estimatedWords: section.estimatedWords || 0, }, chapterId, 2); if (section.subsections && state.genLevel >= 3) { for (let k = 0; k < section.subsections.length; k++) { const subsection = section.subsections[k]; await createChapterRecord(state.bookId, { number: subsection.number ?? (k + 1), title: subsection.title, summary: subsection.summary || '', keyPoints: subsection.keyPoints || [], estimatedWords: subsection.estimatedWords || 0, }, sectionId, 3); } } } } } console.log('[FullOutline] 完整大纲生成完成，章节数:', totalChapters); return { progress: PROGRESS.OUTLINE_DONE }; } catch (error) { console.error('[FullOutline] 生成失败:', error); await bookStore.update(state.bookId, { genStage: 'failed', failedStage: 'outlining', errorMsg: error instanceof Error ? error.message : '一步大纲生成失败', }); return { error: error instanceof Error ? error.message : '失败', finished: true }; } } /** * 清理失败的旧状态（重试成功后调用） */ async function clearOldFailureState(bookId: string) { try { await prisma.book.update({ where: { id: parseInt(bookId) }, data: { failedStage: null, errorMsg: null, }, }); } catch (e) { console.warn('[FullOutline] 清理旧失败状态失败:', e); } } /** * 辅助：创建或更新单条章节记录并返回 id * level=1 的章用 createChapters（已有方法），level=2/3 用 createChapterItem */ async function createChapterRecord( bookId: string, data: { number: number; title: string; summary: string; keyPoints: string[]; estimatedWords: number }, parentId: number, level: number ): Promise<number> { // level=1（章）使用 bulk create 方法 if (level === 1) { await bookStore.createChapters(bookId, [data]); // 查询刚创建的记录获取 id const record = await prisma.bookChapter.findFirst({ where: { bookId: parseInt(bookId), number: data.number, level: 1, parentId: 0 }, }); if (!record?.id) { console.warn(`[FullOutline] 章节记录未找到: bookId=${bookId} number=${data.number}`); return 0; } return record.id; } // level=2（节）/ level=3（小节）使用 createChapterItem return bookStore.createChapterItem(parseInt(bookId), data, parentId, level); } |