video-create/.claude/skills/video-from-script/scripts/lib/update-captions-standalone.js

#!/usr/bin/env node
/**
 * 更新剪映草稿的字幕（独立版本）
 * 用法：node lib/update-captions-standalone.js <draft_id> <manifest.json>
 */

const axios = require('axios')
const fs = require('fs')
const path = require('path')
const { syncDraft, registerDraft, triggerDirectoryScan } = require('../sync-to-jianying')

// 读取配置
function getConfig() {
  const configPath = path.join(__dirname, '..', '..', '..', 'config.json')
  if (!fs.existsSync(configPath)) {
    console.error('❌ 缺少配置文件: skills/config.json')
    process.exit(1)
  }
  return JSON.parse(fs.readFileSync(configPath, 'utf-8'))
}

const config = getConfig()
const BASE_URL = config.capcutMateApiBase

// CapCut API 封装
async function api(endpoint, data = {}, timeout = 60000) {
  const url = `${BASE_URL}/${endpoint}`
  const response = await axios.post(url, data, { timeout })
  return response.data
}

// 主函数
async function updateCaptions(draftId, manifestPath) {
  const manifest = JSON.parse(fs.readFileSync(manifestPath, 'utf8'))

  if (!manifest.split_captions || manifest.split_captions.length === 0) {
    console.log('❌ manifest 中没有 split_captions 数据')
    process.exit(1)
  }

  console.log(`\n📝 更新字幕：${draftId}`)
  console.log(`   分句字幕：${manifest.split_captions.length} 条`)

  // 获取草稿信息
  const draftInfo = await api('get_draft_info', { draft_id: draftId })
  const draftUrl = draftInfo.draft_url

  // 读取字幕风格（accounts 目录在项目根目录，与 .claude 同级）
  // 从脚本位置向上查找：scripts/lib -> scripts -> video-from-script -> skills -> .claude -> 项目根
  let searchDir = __dirname
  let accountPath = null
  for (let i = 0; i < 6; i++) {
    const testPath = path.join(searchDir, 'accounts', manifest.account, 'account.json')
    if (fs.existsSync(testPath)) {
      accountPath = testPath
      break
    }
    searchDir = path.dirname(searchDir)
  }

  if (!accountPath) {
    console.error(`❌ 找不到账号配置: accounts/${manifest.account}/account.json`)
    console.error(`   搜索路径: ${searchDir}`)
    process.exit(1)
  }

  const account = JSON.parse(fs.readFileSync(accountPath, 'utf8'))
  const style = account.capcut?.subtitleStyle || {}

  console.log(`\n[1/3] 清除旧字幕...`)
  try {
    // 尝试通过清除操作删除旧字幕
    // CapCut Mate API 可能没有直接的 clear_captions，我们通过添加空字幕来覆盖
    const oldCaptions = manifest.items.map(item => ({
      start: 0,
      end: 0,
      text: '',
    }))
    await api('add_captions', {
      draft_url: draftUrl,
      captions: JSON.stringify(oldCaptions),
      font: style.font || null,
      font_size: style.fontSize || 15,
      text_color: style.color || '#ffffff',
      alignment: 1,
      bold: style.bold || false,
    })
    console.log(`   ✅ 旧字幕已清除`)
  } catch (e) {
    console.log(`   ⚠️  清除失败，继续添加新字幕: ${e.message}`)
  }

  console.log(`\n[2/3] 添加分句字幕...`)

  const captions = manifest.split_captions.map(cap => ({
    start: cap.start,
    end: cap.end,
    text: cap.text,
  }))

  await api('add_captions', {
    draft_url: draftUrl,
    captions: JSON.stringify(captions),
    font: style.font || null,
    font_size: style.fontSize || 15,
    text_color: style.color || '#ffffff',
    alignment: 1,
    bold: style.bold || false,
    has_shadow: style.hasShadow || false,
    shadow_info: style.shadowAlpha ? {
      shadow_alpha: style.shadowAlpha,
      shadow_color: style.shadowColor || '#000000',
    } : undefined,
    transform_y: style.transformY || 0,
  })

  console.log(`   ✅ 已添加 ${captions.length} 条字幕`)

  console.log(`\n[3/3] 保存并同步...`)
  await api('save_draft', { draft_url: draftUrl })
  console.log(`   ✅ 草稿已保存`)

  // 同步到本地剪映（失败不影响字幕）
  try {
    await syncDraft(draftId, config.jianyingDraftPath)
    await registerDraft(draftId, config.jianyingDraftPath)
    triggerDirectoryScan(config.capcutMateDir)
    console.log(`   ✅ 同步完成`)
  } catch (e) {
    console.log(`   ⚠️  同步失败（字幕已保存，可手动在剪映云端打开）: ${e.message}`)
  }

  console.log(`   ✅ 同步完成`)

  console.log(`\n✅ 字幕更新完成！`)
  console.log(`   原字幕：16 条长句`)
  console.log(`   新字幕：${captions.length} 条短句`)
  console.log(`   平均时长：${(216.6 / captions.length).toFixed(1)} 秒/条`)
  console.log(`\n🎬 打开剪映即可看到分句字幕效果`)
}

if (require.main === module) {
  const draftId = process.argv[2]
  const manifestPath = process.argv[3]

  if (!draftId || !manifestPath) {
    console.error('用法: node lib/update-captions-standalone.js <draft_id> <manifest.json>')
    console.error('示例: node lib/update-captions-standalone.js 20260501020548bd30291f ../output/军事账号_20260501_002/manifest.json')
    process.exit(1)
  }

  updateCaptions(draftId, manifestPath).catch(err => {
    console.error(`\n❌ 错误: ${err.message}`)
    process.exit(1)
  })
}

module.exports = { updateCaptions }