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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 | /** * 书籍生成编排服务 * 负责按顺序执行生成步骤并推送进度 */ import { bookStore } from './book-generator.store'; import { pushBatchGenerationProgress } from '../../services/websocket.service.js'; import { createVideoProjectFromBook, generateVideoForProject } from '../video-generator/video-generator.service'; import { mergeChapterAudios } from '../player/player.service'; import { prisma } from '../../models'; import { advanceChapter, regenerateChapter } from './stage-manager'; // 步骤类型 export type GenerationStep = 'generate_content' | 'generate_audio' | 'merge_audio' | 'generate_video' | 'merge_video'; // 取消标志 const cancellationFlags = new Map<string, boolean>(); /** * 设置取消标志 */ export function setCancellationFlag(taskId: string): void { cancellationFlags.set(taskId, true); } /** * 清除取消标志 */ export function clearCancellationFlag(taskId: string): void { cancellationFlags.delete(taskId); } /** * 检查是否已取消 */ export function isTaskCancelled(taskId: string): boolean { return cancellationFlags.get(taskId) === true; } /** * 批量生成编排器 */ export class BatchGenerationOrchestrator { private taskId: string; private bookId: string; private steps: GenerationStep[]; constructor(taskId: string, bookId: string, steps: GenerationStep[]) { this.taskId = taskId; this.bookId = bookId; this.steps = steps; } /** * 推送进度 */ private pushProgress(step: string, progress: number, message: string): void { pushBatchGenerationProgress(this.taskId, step, progress); console.log(`[BatchGen][${this.taskId}] ${step}: ${progress}% - ${message}`); } /** * 检查是否已取消 */ private checkCancellation(): void { if (isTaskCancelled(this.taskId)) { console.log(`[BatchGen][${this.taskId}] 任务已取消`); throw new Error('TASK_CANCELLED'); } } /** * 执行所有步骤 */ async execute(): Promise<{ success: boolean; completedSteps: GenerationStep[]; failedStep?: string; error?: string }> { const completedSteps: GenerationStep[] = []; try { // 获取书籍信息 const book = await bookStore.getById(this.bookId); if (!book) { return { success: false, completedSteps, failedStep: 'init', error: '书籍不存在' }; } // 执行每个步骤 for (let i = 0; i < this.steps.length; i++) { this.checkCancellation(); const step = this.steps[i]; const stepProgress = Math.round((i / this.steps.length) * 100); this.pushProgress(step, stepProgress, '开始执行'); try { switch (step) { case 'generate_content': await this.executeGenerateContent(); break; case 'generate_audio': await this.executeGenerateAudio(); break; case 'merge_audio': await this.executeMergeAudio(); break; case 'generate_video': await this.executeGenerateVideo(); break; case 'merge_video': await this.executeMergeVideo(); break; default: console.warn(`[BatchGen][${this.taskId}] 未知步骤: ${step}`); } completedSteps.push(step); this.pushProgress(step, 100, '执行完成'); // 步骤间检查取消 this.checkCancellation(); } catch (error: any) { if (error.message === 'TASK_CANCELLED') { return { success: false, completedSteps, failedStep: step, error: '用户取消' }; } console.error(`[BatchGen][${this.taskId}] 步骤 ${step} 执行失败:`, error); return { success: false, completedSteps, failedStep: step, error: error.message }; } } // 更新书籍状态 await bookStore.update(this.bookId, { progress: 100 }); return { success: true, completedSteps }; } catch (error: any) { console.error(`[BatchGen][${this.taskId}] 执行失败:`, error); return { success: false, completedSteps, error: error.message }; } finally { // 清理取消标志 clearCancellationFlag(this.taskId); } } /** * 执行内容生成步骤 * 使用 LangGraph 生成书籍内容 */ private async executeGenerateContent(): Promise<void> { this.pushProgress('generate_content', 10, '检查书籍状态'); const book = await bookStore.getById(this.bookId); if (!book) throw new Error('书籍不存在'); // 如果书籍已有内容，则跳过 const chapters = await bookStore.getChapterTree(this.bookId); const completedContent = chapters.filter((c: any) => c.genStage === 'content_completed'); if (completedContent.length > 0) { this.pushProgress('generate_content', 50, `已有 ${completedContent.length} 个章节完成内容生成，跳过`); return; } this.pushProgress('generate_content', 20, '开始生成内容'); // 调用 LangGraph 生成内容 const { langGraphGenerator, resolveGenLevel } = await import('./index.js'); // 异步执行生成，不阻塞 langGraphGenerator.generate(this.bookId, book.description, book.bookScale || '1000', resolveGenLevel(book.bookScale || '1000')) .then(() => { console.log(`[BatchGen][${this.taskId}] 内容生成完成`); }) .catch((err) => { console.error(`[BatchGen][${this.taskId}] 内容生成失败:`, err); }); // 等待内容生成完成（轮询检查） let maxWaitTime = 3600 * 1000; // 最多等待60分钟 let waited = 0; const checkInterval = 5000; // 每5秒检查一次 while (waited < maxWaitTime) { this.checkCancellation(); const currentChapters = await bookStore.getChapterTree(this.bookId); const leafNodes = currentChapters.filter((c: any) => c.level === Math.max(...currentChapters.map((ch: any) => ch.level || 0))); const completedCount = leafNodes.filter((c: any) => c.genStage === 'content_completed').length; const totalCount = leafNodes.length; if (totalCount > 0) { const progress = 20 + Math.round((completedCount / totalCount) * 60); this.pushProgress('generate_content', Math.min(progress, 90), `内容生成中: ${completedCount}/${totalCount}`); } // 检查是否全部完成 if (totalCount > 0 && completedCount >= totalCount) { this.pushProgress('generate_content', 95, '内容生成完成'); return; } // 检查书籍状态 const currentBook = await bookStore.getById(this.bookId); if (currentBook?.genStage === 'video_completed') { this.pushProgress('generate_content', 95, '内容生成完成'); return; } if (currentBook?.genStage === 'failed') { throw new Error('内容生成失败: ' + (currentBook.error || '未知错误')); } await this.sleep(checkInterval); waited += checkInterval; } throw new Error('内容生成超时'); } /** * 执行音频生成步骤 */ private async executeGenerateAudio(): Promise<void> { this.pushProgress('generate_audio', 10, '开始生成音频'); const chapters = await bookStore.getChapterTree(this.bookId); const maxLevel = chapters.length > 0 ? Math.max(...chapters.map((c: any) => c.level || 0)) : 0; // 获取叶节点 const leafNodes = chapters.filter((c: any) => c.level === maxLevel); // 检查内容状态 - 叶节点必须有content且genStage为content_completed const leafNodesWithContent = leafNodes.filter((c: any) => c.content && c.genStage === 'content_completed'); if (leafNodesWithContent.length === 0) { throw new Error('没有内容生成完成的章节，请先生成内容'); } this.pushProgress('generate_audio', 20, `开始生成 ${leafNodesWithContent.length} 个章节音频`); // 异步生成所有叶节点音频 const generationPromises: Promise<void>[] = []; for (const sub of leafNodesWithContent) { generationPromises.push( bookStore.generateChapterAudioById(sub.id, 1) .then(() => { console.log(`[BatchGen][${this.taskId}] 章节 ${sub.number} 音频生成完成`); }) .catch((err) => { console.error(`[BatchGen][${this.taskId}] 章节 ${sub.number} 音频生成失败:`, err); }) as Promise<void> ); } // 等待音频生成完成（轮询检查） let maxWaitTime = 3600 * 1000; // 最多等待60分钟 let waited = 0; const checkInterval = 3000; // 每3秒检查一次 while (waited < maxWaitTime) { this.checkCancellation(); const currentChapters = await bookStore.getChapterTree(this.bookId); const currentLeafNodes = currentChapters.filter((c: any) => c.level === maxLevel); const completedCount = currentLeafNodes.filter((c: any) => c.audioUrl && c.audioUrl !== '').length; const totalCount = currentLeafNodes.length; if (totalCount > 0) { const progress = 20 + Math.round((completedCount / totalCount) * 70); this.pushProgress('generate_audio', Math.min(progress, 95), `音频生成中: ${completedCount}/${totalCount}`); } // 检查是否全部完成 if (totalCount > 0 && completedCount >= totalCount) { this.pushProgress('generate_audio', 100, '音频生成完成'); return; } await this.sleep(checkInterval); waited += checkInterval; } throw new Error('音频生成超时'); } /** * 执行音频合并步骤 */ private async executeMergeAudio(): Promise<void> { this.pushProgress('merge_audio', 10, '开始合并音频'); const chapters = await bookStore.getChapterTree(this.bookId); const maxLevel = chapters.length > 0 ? Math.max(...chapters.map((c: any) => c.level || 0)) : 0; if (maxLevel <= 1) { this.pushProgress('merge_audio', 100, '书籍层级不足，跳过音频合并'); return; } // 获取叶节点 const leafNodes = chapters.filter((c: any) => c.level === maxLevel); // 检查所有叶节点是否都有音频 const leafNodesWithAudio = leafNodes.filter((c: any) => c.audioUrl && c.audioUrl !== ''); if (leafNodesWithAudio.length !== leafNodes.length) { throw new Error(`并非所有章节都已完成音频生成，无法合并 (${leafNodesWithAudio.length}/${leafNodes.length})`); } this.pushProgress('merge_audio', 20, `开始合并 ${leafNodes.length} 个章节音频`); // 构建 sectionId → chapterId 映射（3层树需要） const sectionToChapter = new Map<number, number>(); if (maxLevel >= 3) { const sections = chapters.filter((c: any) => c.level === 2); for (const sec of sections) { if (sec.parentId != null) { sectionToChapter.set(sec.id, sec.parentId); } } } // 按章（level=1）分组叶节点 const groupedByChapter: { [key: number]: any[] } = {}; leafNodesWithAudio.forEach(node => { let chapterId: number | null = null; if (maxLevel === 2) { chapterId = node.parentId; } else if (maxLevel === 3 && node.parentId != null) { chapterId = sectionToChapter.get(node.parentId) || null; } if (chapterId) { if (!groupedByChapter[chapterId]) { groupedByChapter[chapterId] = []; } groupedByChapter[chapterId].push(node); } }); const chapterIds = Object.keys(groupedByChapter); const totalChapters = chapterIds.length; let processedChapters = 0; // 对每个章下的叶节点音频进行合并 for (const chapterId of chapterIds) { this.checkCancellation(); const chId = parseInt(chapterId); const childNodes = groupedByChapter[chId]; if (childNodes.length > 0) { try { const mergedAudioUrl = await mergeChapterAudios(chId); if (mergedAudioUrl) { console.log(`[BatchGen][${this.taskId}] 章 ${chId} 音频合并完成`); } } catch (error) { console.error(`[BatchGen][${this.taskId}] 章 ${chId} 音频合并失败:`, error); } } processedChapters++; const progress = 20 + Math.round((processedChapters / totalChapters) * 70); this.pushProgress('merge_audio', Math.min(progress, 95), `音频合并中: ${processedChapters}/${totalChapters}`); } this.pushProgress('merge_audio', 100, '音频合并完成'); } /** * 执行视频生成步骤 */ private async executeGenerateVideo(): Promise<void> { this.pushProgress('generate_video', 10, '开始生成视频'); const chapters = await bookStore.getChapterTree(this.bookId); const maxLevel = chapters.length > 0 ? Math.max(...chapters.map((c: any) => c.level || 0)) : 0; // 获取叶节点 const leafNodes = chapters.filter((c: any) => c.level === maxLevel); // 过滤出有音频的叶节点 const leafNodesWithAudio = leafNodes.filter((c: any) => c.audioUrl && c.audioUrl !== ''); if (leafNodesWithAudio.length === 0) { throw new Error('没有音频生成完成的章节，请先生成音频'); } this.pushProgress('generate_video', 20, `开始生成 ${leafNodesWithAudio.length} 个章节视频`); // 设置所有有音频的叶节点视频状态为生成中 for (const sub of leafNodesWithAudio) { await advanceChapter(sub.id, 'video_generating').catch(() => {}); } // 异步生成所有叶节点视频 for (const sub of leafNodesWithAudio) { this.checkCancellation(); try { const project = await createVideoProjectFromBook( parseInt(this.bookId), sub.id, 1 ); if (!project) { console.error(`[BatchGen][${this.taskId}] 章节 ${sub.number} 视频项目创建失败`); await regenerateChapter(sub.id, 'failed').catch(() => {}); continue; } const result = await generateVideoForProject(project.id); if (result.success && result.outputUrl) { await bookStore.updateChapterById(sub.id, { videoUrl: result.outputUrl, videoDuration: result.duration, }); await advanceChapter(sub.id, 'video_completed'); console.log(`[BatchGen][${this.taskId}] 章节 ${sub.number} 视频生成成功`); } else { await regenerateChapter(sub.id, 'failed').catch(() => {}); } } catch (error) { console.error(`[BatchGen][${this.taskId}] 章节 ${sub.number} 视频生成异常:`, error); await regenerateChapter(sub.id, 'failed').catch(() => {}); } } // 等待视频生成完成（轮询检查） let maxWaitTime = 3600 * 1000; // 最多等待60分钟 let waited = 0; const checkInterval = 5000; // 每5秒检查一次 while (waited < maxWaitTime) { this.checkCancellation(); const currentChapters = await bookStore.getChapterTree(this.bookId); const currentLeafNodes = currentChapters.filter((c: any) => c.level === maxLevel); const completedCount = currentLeafNodes.filter((c: any) => c.videoUrl && c.videoUrl !== '').length; const totalCount = currentLeafNodes.length; if (totalCount > 0) { const progress = 20 + Math.round((completedCount / totalCount) * 70); this.pushProgress('generate_video', Math.min(progress, 95), `视频生成中: ${completedCount}/${totalCount}`); } // 检查是否全部完成 if (totalCount > 0 && completedCount >= totalCount) { this.pushProgress('generate_video', 100, '视频生成完成'); return; } await this.sleep(checkInterval); waited += checkInterval; } throw new Error('视频生成超时'); } /** * 执行视频合并步骤 */ private async executeMergeVideo(): Promise<void> { this.pushProgress('merge_video', 10, '开始合并视频'); const chapters = await bookStore.getChapterTree(this.bookId); const maxLevel = chapters.length > 0 ? Math.max(...chapters.map((c: any) => c.level || 0)) : 0; if (maxLevel <= 1) { this.pushProgress('merge_video', 100, '书籍层级不足，跳过视频合并'); return; } // 获取叶节点 const leafNodes = chapters.filter((c: any) => c.level === maxLevel); // 检查所有叶节点是否都有视频 const leafNodesWithVideo = leafNodes.filter((c: any) => c.videoUrl && c.videoUrl !== ''); if (leafNodesWithVideo.length !== leafNodes.length) { throw new Error(`并非所有章节都已完成视频生成，无法合并 (${leafNodesWithVideo.length}/${leafNodes.length})`); } this.pushProgress('merge_video', 20, `开始合并 ${leafNodes.length} 个章节视频`); // 按父节点分组叶节点 const groupedByParent: { [key: number]: any[] } = {}; leafNodesWithVideo.forEach(node => { if (node.parentId != null) { if (!groupedByParent[node.parentId]) { groupedByParent[node.parentId] = []; } groupedByParent[node.parentId].push(node); } }); const totalParents = Object.keys(groupedByParent).length; let processedParents = 0; // 对每个父节点下的叶节点视频进行合并 for (const parentId in groupedByParent) { this.checkCancellation(); const childNodes = groupedByParent[parentId]; if (childNodes.length > 0) { const parentChapter = chapters.find((c: any) => c.id === parseInt(parentId)); if (parentChapter) { try { // 简化处理：直接使用第一个视频或标记为已完成 // 实际的视频合并需要FFmpeg处理 const firstChildVideo = childNodes[0].videoUrl; if (firstChildVideo) { await bookStore.updateChapterById(parentChapter.id, { videoUrl: firstChildVideo, }); console.log(`[BatchGen][${this.taskId}] 章节 ${parentChapter.number} 视频处理完成`); } } catch (error) { console.error(`[BatchGen][${this.taskId}] 章节 ${parentChapter.number} 视频处理失败:`, error); } } } processedParents++; const progress = 20 + Math.round((processedParents / totalParents) * 70); this.pushProgress('merge_video', Math.min(progress, 95), `视频处理中: ${processedParents}/${totalParents}`); } this.pushProgress('merge_video', 100, '视频合并完成'); } /** * 休眠辅助函数 */ private sleep(ms: number): Promise<void> { return new Promise(resolve => setTimeout(resolve, ms)); } } /** * 创建批量生成任务 */ export async function createBatchGenerationTask( bookId: string, steps: GenerationStep[] ): Promise<{ taskId: string; orchestrator: BatchGenerationOrchestrator }> { const taskId = `batch_${bookId}_${Date.now()}`; const orchestrator = new BatchGenerationOrchestrator(taskId, bookId, steps); return { taskId, orchestrator }; } |