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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 | /** * 节和小节大纲生成节点 */ import { GraphState } from '../graph'; import { bookStore } from '../book-generator.store'; import { prisma } from '../../../models'; import { callLLMWithMessages } from '../../../services/llm'; import { parseSections } from '../parsers/section.parser'; import { parseSubsections } from '../parsers/subsection.parser'; import { buildSectionMessages, buildSubsectionMessages } from '../prompts/builder'; import { PROGRESS } from '../utils'; /** * 生成节大纲节点（二级大纲） * 为每章生成节的大纲 * 如果 genLevel ≤ 1，跳过（仅章层级） */ export async function generateSectionsNode(state: typeof GraphState.State): Promise<Partial<typeof GraphState.State>> { console.log('[LangGraph] 生成节大纲, bookId:', state.bookId, 'genLevel:', state.genLevel); // genLevel=1（仅章）：跳过 if (state.genLevel <= 1) { console.log('[LangGraph] genLevel=1，跳过节点生成'); return { progress: PROGRESS.SECTIONS_DONE }; } const book = await bookStore.getById(state.bookId); if (!book || !book.outline) { console.log('[LangGraph] 无大纲，跳过节生成'); return { finished: true, progress: PROGRESS.SECTIONS_DONE }; } try { const updatedChapters = []; for (const chapter of book.outline.chapters) { console.log(`[LangGraph] 为第${chapter.number}章「${chapter.title}」生成节大纲`); const messages = buildSectionMessages(chapter.title, chapter.summary, chapter.keyPoints || []); let parsed = null; let lastError = null; for (let retry = 0; retry < 3; retry++) { try { const response = await callLLMWithMessages(messages); parsed = parseSections(response); if (parsed && parsed.sections.length > 0) { console.log(`[LangGraph] 第${chapter.number}章节大纲解析成功，共${parsed.sections.length}节`); break; } else { console.warn(`[LangGraph] 第${chapter.number}章节大纲解析失败（第${retry + 1}次），重试中...`); lastError = new Error('解析结果为空'); } } catch (sectionErr) { console.error(`[LangGraph] 第${chapter.number}章节大纲生成失败（第${retry + 1}次）:`, sectionErr); lastError = sectionErr; } } if (parsed && parsed.sections.length > 0) { const bookIdNum = parseInt(state.bookId); const chapterRecord = await prisma.bookChapter.findFirst({ where: { bookId: bookIdNum, parentId: 0, level: 1, number: chapter.number } }); if (chapterRecord) { for (let j = 0; j < parsed.sections.length; j++) { const section = parsed.sections[j]; const sectionNumber = section.number ?? (j + 1); await bookStore.createChapterItem(bookIdNum, { number: sectionNumber, title: section.title, summary: section.summary, keyPoints: section.keyPoints, estimatedWords: section.estimatedWords, }, chapterRecord.id, 2); console.log(`[LangGraph] - 第${chapter.number}章第${sectionNumber}节「${section.title}」`); } } else { console.error(`[LangGraph] 未找到第${chapter.number}章的数据库记录`); } updatedChapters.push({ ...chapter, sections: parsed.sections, }); } else { console.warn(`[LangGraph] 第${chapter.number}章节大纲解析失败，跳过。错误:`, lastError); updatedChapters.push(chapter); } } const updatedOutline = { ...book.outline, chapters: updatedChapters }; await bookStore.update(state.bookId, { outlineJson: JSON.stringify(updatedOutline), progress: PROGRESS.SECTIONS_DONE, }); console.log('[LangGraph] 节大纲生成完成'); return { progress: PROGRESS.SECTIONS_DONE }; } catch (error) { console.error('[LangGraph] 节大纲生成失败:', error); return { error: error instanceof Error ? error.message : '失败', finished: true }; } } /** * 生成小节大纲节点（三级大纲） * 为每节生成小节的大纲 * 如果 genLevel ≤ 2，跳过（仅章→节层级） */ export async function generateSubsectionsNode(state: typeof GraphState.State): Promise<Partial<typeof GraphState.State>> { console.log('[LangGraph] 生成小节大纲, bookId:', state.bookId, 'genLevel:', state.genLevel); // genLevel≤2（仅章→节）：跳过 if (state.genLevel <= 2) { console.log('[LangGraph] genLevel≤2，跳过小节生成'); return { progress: PROGRESS.SUBSECTIONS_DONE }; } const book = await bookStore.getById(state.bookId); if (!book || !book.outline) { console.log('[LangGraph] 无大纲，跳过小节生成'); return { finished: true, progress: PROGRESS.SUBSECTIONS_DONE }; } try { const updatedChapters = []; for (const chapter of book.outline.chapters) { const updatedSections = []; if (chapter.sections && chapter.sections.length > 0) { for (const section of chapter.sections) { console.log(`[LangGraph] 为第${chapter.number}章第${section.number}节「${section.title}」生成小节大纲`); const messages = buildSubsectionMessages(section.title, section.summary || '', section.keyPoints || []); let parsed = null; let lastError = null; for (let retry = 0; retry < 3; retry++) { try { const response = await callLLMWithMessages(messages); parsed = parseSubsections(response); if (parsed && parsed.subsections.length > 0) { console.log(`[LangGraph] 第${chapter.number}章第${section.number}节小节大纲解析成功，共${parsed.subsections.length}小节`); break; } else { console.warn(`[LangGraph] 第${chapter.number}章第${section.number}节小节大纲解析失败（第${retry + 1}次），重试中...`); lastError = new Error('解析结果为空'); } } catch (subErr) { console.error(`[LangGraph] 第${chapter.number}章第${section.number}节小节大纲生成失败（第${retry + 1}次）:`, subErr); lastError = subErr; } } if (parsed && parsed.subsections.length > 0) { const bookIdNum = parseInt(state.bookId); const chapterRecord = await prisma.bookChapter.findFirst({ where: { bookId: bookIdNum, parentId: 0, level: 1, number: chapter.number } }); if (!chapterRecord) { console.error(`[LangGraph] 未找到第${chapter.number}章的数据库记录`); updatedSections.push(section); continue; } const sectionRecord = await prisma.bookChapter.findFirst({ where: { bookId: bookIdNum, parentId: chapterRecord.id, level: 2, number: section.number } }); if (sectionRecord) { for (const subsection of parsed.subsections) { await bookStore.createChapterItem(bookIdNum, { number: subsection.number, title: subsection.title, summary: subsection.summary, keyPoints: subsection.keyPoints, estimatedWords: subsection.estimatedWords, }, sectionRecord.id, 3); console.log(`[LangGraph] - 第${chapter.number}章第${section.number}节第${subsection.number}小节「${subsection.title}」`); } } else { console.error(`[LangGraph] 未找到第${chapter.number}章第${section.number}节的数据库记录`); } updatedSections.push({ ...section, subsections: parsed.subsections, }); } else { console.warn(`[LangGraph] 第${chapter.number}章第${section.number}节小节大纲解析失败，跳过。错误:`, lastError); updatedSections.push(section); } } } updatedChapters.push({ ...chapter, sections: updatedSections.length > 0 ? updatedSections : chapter.sections, }); } const updatedOutline = { ...book.outline, chapters: updatedChapters }; await bookStore.update(state.bookId, { outlineJson: JSON.stringify(updatedOutline), progress: PROGRESS.SUBSECTIONS_DONE, }); console.log('[LangGraph] 小节大纲生成完成'); return { progress: PROGRESS.SUBSECTIONS_DONE }; } catch (error) { console.error('[LangGraph] 小节大纲生成失败:', error); return { error: error instanceof Error ? error.message : '失败', finished: true }; } } |