#!/usr/bin/env node
/**
 * 排查「段落间距」：对比 调用记录里 outline.suggestedContent 与 node_slides.content.paragraphs
 * 在服务器上执行（需能连到数据库）：
 *   cd /var/www/wildgrowth-backend/backend && node scripts/inspect-paragraphs-server.js
 * 本地（有 .env）：
 *   cd backend && node scripts/inspect-paragraphs-server.js
 */

const { PrismaClient } = require('@prisma/client');
const prisma = new PrismaClient();

async function main() {
  const argId = process.argv[2] ? process.argv[2].trim() : null;

  let task;
  if (argId) {
    // 先按 taskId 查，再按 courseId 查
    task = await prisma.courseGenerationTask.findFirst({
      where: { id: argId },
      include: { course: { select: { id: true, title: true } } },
    });
    if (!task) {
      task = await prisma.courseGenerationTask.findFirst({
        where: { courseId: argId },
        orderBy: { createdAt: 'desc' },
        include: { course: { select: { id: true, title: true } } },
      });
    }
    if (!task) {
      console.log('未找到 taskId 或 courseId 为', argId, '的任务');
      return;
    }
  } else {
    // 取最新一条已完成任务
    task = await prisma.courseGenerationTask.findFirst({
      where: { status: 'completed' },
      orderBy: { createdAt: 'desc' },
      include: { course: { select: { id: true, title: true } } },
    });
    if (!task) {
      console.log('没有已完成的生成任务');
      return;
    }
  }

  console.log('=== 任务信息 ===');
  console.log('taskId:', task.id);
  console.log('courseId:', task.courseId);
  console.log('courseTitle:', task.course?.title ?? '');
  console.log('');

  const outline = task.outline;
  if (!outline || !outline.chapters || !Array.isArray(outline.chapters)) {
    console.log('任务无 outline 或 chapters');
    return;
  }

  // 取第一个小节对应的 suggestedContent（调用记录里显示的那类内容）
  let firstSuggestedContent = null;
  let firstNodeTitle = '';
  for (const ch of outline.chapters) {
    if (ch.nodes && Array.isArray(ch.nodes)) {
      for (const node of ch.nodes) {
        if (node.suggestedContent) {
          firstSuggestedContent = node.suggestedContent;
          firstNodeTitle = node.title || '';
          break;
        }
      }
      if (firstSuggestedContent) break;
    }
  }

  if (!firstSuggestedContent) {
    console.log('outline 中未找到 suggestedContent');
  } else {
    console.log('=== outline 中第一个小节的 suggestedContent（调用记录里看到的内容）===');
    console.log('小节标题:', firstNodeTitle);
    console.log('长度:', firstSuggestedContent.length);
    const idx = firstSuggestedContent.indexOf('\n');
    console.log('第一个 \\n 位置:', idx === -1 ? '无' : idx);
    const doubleNewlineCount = (firstSuggestedContent.match(/\n\s*\n/g) || []).length;
    console.log('双换行 \\n\\n 出现次数:', doubleNewlineCount);
    const splitByDouble = firstSuggestedContent.split(/\n\s*\n/).map((p) => p.trim()).filter((p) => p.length > 0);
    console.log('按 /\\n\\s*\\n/ 拆分后段落数:', splitByDouble.length);
    console.log('前 350 字符（repr）:', JSON.stringify(firstSuggestedContent.slice(0, 350)));
    console.log('');
  }

  // 该课程下第一个节点的 node_slides 的 content.paragraphs
  const firstNode = await prisma.courseNode.findFirst({
    where: { courseId: task.courseId },
    orderBy: { orderIndex: 'asc' },
    include: { slides: { orderBy: { orderIndex: 'asc' }, take: 1 } },
  });

  if (!firstNode || !firstNode.slides || firstNode.slides.length === 0) {
    console.log('该课程下没有节点或没有 node_slides');
    return;
  }

  const slide = firstNode.slides[0];
  const content = slide.content;
  console.log('=== 该课程第一个节点的 node_slides.content（实际落库）===');
  console.log('节点标题:', firstNode.title);
  console.log('slide id:', slide.id);
  if (content && typeof content === 'object' && Array.isArray(content.paragraphs)) {
    console.log('paragraphs 数量:', content.paragraphs.length);
    content.paragraphs.forEach((p, i) => {
      console.log(`  [${i}] 长度: ${p.length}, 前80字: ${JSON.stringify(p.slice(0, 80))}`);
    });
  } else {
    console.log('content 或 content.paragraphs 不存在:', content ? Object.keys(content) : 'null');
  }
}

main()
  .then(() => process.exit(0))
  .catch((e) => {
    console.error(e);
    process.exit(1);
  })
  .finally(() => prisma.$disconnect());