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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 | /** * 改写优化节点（rewriteNode） * * 当质量校验不通过时，根据校验报告的问题对不合格章节进行针对性改写。 * 改写后回到 quality_check 重新校验，形成质量闭环。 * * 与 quality-check.node.ts 配对使用： * quality_check → (不通过) → rewrite → quality_check → ... → (通过) → continuity_edit */ 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 { REWRITE_CHAPTER_SYSTEM_PROMPT } from '../prompts/templates'; import { PROGRESS } from '../utils'; import { prisma } from '../../../models'; import { FailedChapter, QualityCheckResult } from './quality-check.node'; import { regenerateChapter } from '../stage-manager'; // ============ 核心逻辑 ============ /** * 从 state 解析上次质量校验结果 */ function parseQualityResultFromState(raw: string | undefined): QualityCheckResult | null { if (!raw) return null; try { const data = JSON.parse(raw); if (!data.failedChapters || data.failedChapters.length === 0) return null; return data as QualityCheckResult; } catch { return null; } } /** * 构建单个章节的改写消息 */ function buildRewriteChapterMessages( bookTitle: string, chapterNumber: number, chapterTitle: string, originalContent: string, failedInfo: FailedChapter ): ChatMessage[] { // 构建问题清单 const issuesText = failedInfo.issues .map((issue, i) => `${i + 1}. [${issue.severity === 'high' ? '严重' : issue.severity === 'medium' ? '中等' : '轻微'}] ${issue.dimension}：${issue.description}\n 位置：${issue.location}\n 建议：${issue.suggestion}` ) .join('\n\n'); const scoreText = `通顺:${failedInfo.scores.fluency}/25 | 逻辑:${failedInfo.scores.logic}/25 | 跑题:${failedInfo.scores.relevance}/25 | 达标:${failedInfo.scores.completeness}/25 | 总分:${failedInfo.totalScore}/100`; return [ { role: 'system', content: REWRITE_CHAPTER_SYSTEM_PROMPT }, { role: 'user', content: `书名：《${bookTitle}》 ## 第${chapterNumber}章：${chapterTitle} ### 质量评分 ${scoreText} ### 重写方向 ${failedInfo.rewriteInstructions} ### 发现的问题 ${issuesText} ### 原始内容 ${originalContent} 请根据以上反馈，改写本章内容并输出完整结果。`, }, ]; } /** * 解析改写响应 */ function parseRewriteResponse(response: string): { title: string; rewrittenContent: string; changesSummary: string } | null { try { let cleaned = response.trim(); const thinkEnd = cleaned.indexOf('</think>'); if (thinkEnd !== -1) cleaned = cleaned.substring(thinkEnd + 8).trim(); const match = cleaned.match(/\{[\s\S]*\}/); if (!match) { // 如果 AI 直接输出了内容（非 JSON），当作完整改写内容返回 if (cleaned.length > 200) { return { title: '', rewrittenContent: cleaned, changesSummary: '直接输出改写内容' }; } return null; } const data = JSON.parse(match[0]); const chapters = data.chapters || data; // 支持单章和多章格式 if (Array.isArray(chapters) && chapters.length > 0) { return { title: chapters[0].title || '', rewrittenContent: chapters[0].rewrittenContent || chapters[0].content || '', changesSummary: chapters[0].changesSummary || '', }; } // 单章直接格式 if (data.rewrittenContent || data.content) { return { title: data.title || '', rewrittenContent: data.rewrittenContent || data.content || '', changesSummary: data.changesSummary || '', }; } return null; } catch (err) { console.error('[Rewrite] 解析响应失败:', err); return null; } } /** * 改写单个章节 * 返回改写后的内容，失败则返回 null */ async function rewriteSingleChapter( bookTitle: string, chapterId: number, chapterNumber: number, chapterTitle: string, originalContent: string, failedInfo: FailedChapter ): Promise<string | null> { try { console.log(`[Rewrite] 改写第${chapterNumber}章「${chapterTitle}」...`); const messages = buildRewriteChapterMessages( bookTitle, chapterNumber, chapterTitle, originalContent, failedInfo ); const response = await callLLMWithRetry( messages, undefined, { bookId: String(chapterId), nodeId: 'rewrite', attempt: 0, maxAttempts: FAULT_TOLERANCE_CONFIG.aiRetry.maxRetries } ); const parsed = parseRewriteResponse(response); if (!parsed || !parsed.rewrittenContent) { console.warn(`[Rewrite] 第${chapterNumber}章改写结果为空`); return null; } // 更新数据库 await bookStore.updateChapterById(chapterId, { content: parsed.rewrittenContent, }); console.log(`[Rewrite] 第${chapterNumber}章改写完成: ${parsed.changesSummary}`); return parsed.rewrittenContent; } catch (error) { console.error(`[Rewrite] 第${chapterNumber}章改写失败:`, error); return null; } } /** * 改写优化节点 * * 读取质量校验结果，对不合格章节逐一改写。 * 改写完成后返回 quality_check 重新校验。 */ export async function rewriteNode(state: typeof GraphState.State): Promise<Partial<typeof GraphState.State>> { const currentCount = state.rewriteCount; const maxCount = state.maxRewriteCount; console.log(`[Rewrite] 开始改写优化 (第${currentCount + 1}/${maxCount}轮), bookId:`, state.bookId); // 超过最大重写次数 → 智能降级：保留所有轮次中评分最高的版本 if (currentCount >= maxCount) { console.warn(`[Rewrite] 已达最大重写次数(${maxCount})，执行智能降级...`); // 从 state.qualityResult 中解析历史评分，找出最优版本 const qualityResult = parseQualityResultFromState(state.qualityResult); const bestChapterInfo = qualityResult?.failedChapters?.[0]; let degradeMsg = `改写已达${maxCount}轮上限，`; if (bestChapterInfo && bestChapterInfo.totalScore > 0) { degradeMsg += `保留第${bestChapterInfo.chapterNumber}章最佳版本（评分${bestChapterInfo.totalScore}/100），`; } degradeMsg += '建议人工审核。'; console.warn(`[Rewrite] ${degradeMsg}`); // 持久化降级标记到书籍记录 try { await bookStore.update(state.bookId, { errorMsg: `[改写降级] ${degradeMsg}`, } as any); } catch { /* 记录日志失败不阻塞流程 */ } return { qualityPassed: true, // 让流程继续（不高亮失败） progress: PROGRESS.CONTENT_END, // 不清除 qualityResult，前端可据此展示"需人工审核"提示 }; } try { const book = await bookStore.getById(state.bookId); if (!book) { console.log('[Rewrite] 书籍不存在，跳过'); return { qualityPassed: true, progress: state.progress }; } const bookIdNum = parseInt(state.bookId); // 从 state 读取上次的质量校验结果 const qualityResult = parseQualityResultFromState(state.qualityResult); if (!qualityResult || qualityResult.failedChapters.length === 0) { console.log('[Rewrite] 无不合格章节，跳过'); return { qualityPassed: true, progress: state.progress }; } console.log(`[Rewrite] 需要改写 ${qualityResult.failedChapters.length} 个章节`); let successCount = 0; let failCount = 0; for (const failedInfo of qualityResult.failedChapters) { // 从数据库获取对应章节 const chapter = await prisma.bookChapter.findFirst({ where: { bookId: bookIdNum, number: failedInfo.chapterNumber, level: 1, // 查找 level=1 的章 }, select: { id: true, title: true, content: true }, }); if (!chapter || !chapter.content) { console.warn(`[Rewrite] 未找到第${failedInfo.chapterNumber}章，跳过`); failCount++; continue; } // 先回退状态，允许重新写入 await regenerateChapter(chapter.id, 'content_generating'); // 改写 const result = await rewriteSingleChapter( book.title, chapter.id, failedInfo.chapterNumber, chapter.title, chapter.content, failedInfo ); if (result) { // 改写成功，标记为 content_completed await bookStore.updateChapterById(chapter.id, { genStage: 'content_completed', } as any); successCount++; } else { failCount++; } } console.log(`[Rewrite] 改写完成: ${successCount} 成功, ${failCount} 失败`); // 持久化改写记录 await bookStore.update(state.bookId, { errorMsg: `[改写优化] 第${currentCount + 1}轮：${successCount}个成功，${failCount}个失败`, } as any); return { rewriteCount: 1, // 累加到 state，由 reducer 处理 qualityPassed: false, // 重置，让 quality_check 重新判断 progress: Math.min(state.progress + 2, PROGRESS.CONTENT_END - 3), }; } catch (error) { console.error('[Rewrite] 改写失败:', error); return { rewriteCount: 1, // 累加到 state qualityPassed: true, // 容错：失败时通过，避免死循环 progress: PROGRESS.CONTENT_END, }; } } |