/**
 * Open API Routes — Skill-as-a-Service 对外接口
 *
 * 公开端点: install.md, SKILL.md, docs, blog
 * 认证端点: skills/search, skills/:name, skills/download, skills/create, jobs, feedback, updates
 */
const express = require('express');
const fs = require('fs');
const path = require('path');
const router = express.Router();
const { requireApiKey } = require('../middleware/api-key-auth');
const { apiAccessLogger } = require('../middleware/api-access-logger');
const { SkillRegistry } = require('../services/skill-registry');
const { SkillPackager } = require('../services/skill-packager');
const { JobManager } = require('../services/job-manager');
const config = require('../config');
const { resolveSkillDir } = require('../services/skill-dir-manager');

const skillsDir = config.skillsCodeDir;
const registry = new SkillRegistry(skillsDir);
const packager = new SkillPackager(skillsDir);
const jobManager = new JobManager({ storePath: path.resolve(__dirname, '../../.data/jobs-openapi.json') });

const h = (fn) => async (req, res) => {
  try { await fn(req, res); } catch (e) { console.error(`[OpenAPI] ${req.method} ${req.path}:`, e.message); if (!res.headersSent) res.status(500).json({ error: e.message }); }
};

// ─── 公开端点 ───

router.get('/install.md', h((req, res) => {
  const host = req.get('host') || 'localhost:3000';
  const baseUrl = `${req.protocol || 'http'}://${host}/api/open`;
  const allSkills = registry.listSkills().filter(s => s.status === 'enable');
  const fmtList = (arr) => arr.map(s => `  - **${s.skillName}**: ${s.description || '无描述'}`).join('\n');
  const layerSection = (label, arr) => arr.length > 0 ? [`### ${label}（${arr.length} 个）`, fmtList(arr), ''] : [];

  const md = [
    '---', 'name: arenask', 'description: ArenaSK 安装入口。下载连接器 Skill 后即可搜索、下载、安装 AI Skills。',
    'version: 1.0.0', `api_base: ${baseUrl}`, '---', '',
    '# ArenaSK Skill Store', '',
    '> **🤖 本文档面向 AI Agent。所有操作由你（AI）自主执行，无需人类手动操作。**',
    '> **你拥有 shell 和文件读写能力，直接执行以下命令即可。**', '', '---', '',
    '## 第一步：安装 ArenaSK 连接器', '', '下载 `arenask` Skill 到你的本地工作区：', '',
    '```bash', 'mkdir -p <WORKSPACE>/skills/arenask',
    `curl -s "${baseUrl}/skills/arenask/SKILL.md" > <WORKSPACE>/skills/arenask/SKILL.md`, '```', '',
    '将 `<WORKSPACE>` 替换为你的实际工作区路径。', '',
    '## 第二步：配置 API 凭证', '',
    '提示用户登录 ArenaSK 网站 (如 https://arenask.com)，点击右上角头像下拉菜单复制专属的 **API Key**。', '然后将其保存到本地：', '',
    '```bash', 'mkdir -p <WORKSPACE>/.lemon',
    `cat > <WORKSPACE>/.lemon/credentials.json << 'EOF'`, '{', `  "api_base": "${baseUrl}",`, '  "api_key": "<用户提供的_API_KEY>"', '}', 'EOF', '```', '',
    '## 第三步：使用', '', '**每次需要搜索、下载或管理 Skills 时：**', '',
    '1. **阅读** `<WORKSPACE>/skills/arenask/SKILL.md`', '2. **按照 SKILL.md 中的指令**完成操作', '',
    '> ⚠️ **重要：不要记忆或缓存 API 调用方式。**',
    '> 每次都重新阅读 SKILL.md，它包含智能搜索匹配、错误处理和依赖解析逻辑。', '', '---', '',
    '## Skill Store 能力一览', '',
    '| 能力 | 说明 |', '|---|---|',
    '| **搜索** | 自然语言描述需求，智能匹配最佳 Skill |',
    '| **下载安装** | 一键下载 Skill 包并自动解析 L1→L2→L3 依赖树 |',
    '| **创建新 Skill** | 描述需求，异步创建全新 AI Skill |',
    '| **反馈改进** | 对已有 Skill 提出改进建议 |',
    '| **检查更新** | 查询已安装 Skill 的最新版本 |', '',
    `## 当前可用 Skills（${allSkills.length} 个）`, '',
    ...layerSection('L3 场景方案', allSkills.filter(s => s.layer === 3)),
    ...layerSection('L2 复合技能', allSkills.filter(s => s.layer === 2)),
    ...layerSection('L1 原子技能', allSkills.filter(s => s.layer === 1)),
    ...layerSection('其他', allSkills.filter(s => !s.layer)),
    '', '> 详细操作请安装后阅读本地 `skills/arenask/SKILL.md`。',
  ].join('\n');
  res.set('Content-Type', 'text/markdown; charset=utf-8').send(md);
}));

router.get('/skills/:name/SKILL.md', h((req, res) => {
  const dir = resolveSkillDir(req.params.name);
  const p = dir ? path.join(dir, 'SKILL.md') : null;
  if (!p || !fs.existsSync(p)) return res.status(404).send(`# Error\n\nSkill "${req.params.name}" not found.`);
  res.set('Content-Type', 'text/markdown; charset=utf-8').send(fs.readFileSync(p, 'utf-8'));
}));

router.get('/docs', h((req, res) => {
  const docsDir = path.resolve(__dirname, '../../docs');
  if (!fs.existsSync(docsDir)) return res.json([]);
  function scan(dir, prefix = '') {
    const items = [];
    for (const e of fs.readdirSync(dir, { withFileTypes: true })) {
      const rel = prefix ? `${prefix}/${e.name}` : e.name;
      if (e.isDirectory()) items.push(...scan(path.join(dir, e.name), rel));
      else if (e.name.endsWith('.md')) items.push(rel);
    }
    return items;
  }
  const rootDocs = ['README.md', 'CLAUDE.md', 'skilltree.md']
    .filter(f => fs.existsSync(path.resolve(__dirname, '../../', f))).map(f => `_root/${f}`);
  res.json([...rootDocs, ...scan(docsDir)]);
}));

router.get('/docs/*', h((req, res) => {
  const docPath = req.params[0];
  if (!docPath) return res.status(400).send('Missing doc path');
  const base = path.resolve(__dirname, '../..');
  const filePath = docPath.startsWith('_root/')
    ? path.resolve(base, docPath.replace('_root/', ''))
    : path.resolve(base, 'docs/', docPath);
  if (!filePath.startsWith(base)) return res.status(403).send('Forbidden');
  if (!fs.existsSync(filePath)) return res.status(404).send('Not found');
  res.set('Content-Type', 'text/markdown; charset=utf-8').send(fs.readFileSync(filePath, 'utf-8'));
}));

// ─── Blog ───

function _parseFrontmatter(content) {
  const m = content.match(/^---\n([\s\S]*?)\n---\n([\s\S]*)$/);
  if (!m) return { meta: {}, body: content };
  const meta = {};
  m[1].split('\n').forEach(line => {
    const kv = line.match(/^(\w[\w_]*?):\s*(.+)$/);
    if (!kv) return;
    let val = kv[2].trim().replace(/^['"]|['"]$/g, '');
    if (val.startsWith('[') && val.endsWith(']')) {
      try { val = JSON.parse(val); } catch { val = val.slice(1, -1).split(',').map(s => s.trim().replace(/^['"]|['"]$/g, '')); }
    }
    meta[kv[1]] = val;
  });
  return { meta, body: m[2] };
}

router.get('/blog', h((req, res) => {
  const blogDir = path.resolve(__dirname, '../../../data/blog');
  if (!fs.existsSync(blogDir)) return res.json({ posts: [], total: 0 });
  const limit = Math.min(parseInt(req.query.limit) || 20, 100);
  const offset = parseInt(req.query.offset) || 0;
  let posts = fs.readdirSync(blogDir).filter(f => f.endsWith('.md')).sort((a, b) => b.localeCompare(a))
    .map(f => ({ slug: f.replace(/\.md$/, ''), ..._parseFrontmatter(fs.readFileSync(path.join(blogDir, f), 'utf-8')).meta }));
  if (req.query.tag) posts = posts.filter(p => Array.isArray(p.tags) && p.tags.includes(req.query.tag));
  res.json({ posts: posts.slice(offset, offset + limit), total: posts.length, limit, offset });
}));

router.get('/blog/posts/:slug', h((req, res) => {
  const blogDir = path.resolve(__dirname, '../../../data/blog');
  const filePath = path.join(blogDir, `${req.params.slug}.md`);
  if (!filePath.startsWith(blogDir)) return res.status(403).json({ error: 'Forbidden' });
  if (!fs.existsSync(filePath)) return res.status(404).json({ error: 'Post not found' });
  const { meta, body } = _parseFrontmatter(fs.readFileSync(filePath, 'utf-8'));
  res.json({ slug: req.params.slug, ...meta, content: body });
}));

router.get('/blog/images/:filename', h((req, res) => {
  const imgDir = path.resolve(__dirname, '../../../data/blog/images');
  const filePath = path.join(imgDir, req.params.filename);
  if (!filePath.startsWith(imgDir) || !fs.existsSync(filePath)) return res.status(404).send('Not found');
  res.sendFile(filePath);
}));

// ─── 认证端点 ───
router.use(apiAccessLogger);
router.use(requireApiKey);

// ── Skill Name Generation ──
async function _generateSkillName(userQuery) {
  const { execFile } = require('child_process');
  const prompt = `从以下用户需求中，提取一个简洁的英文 snake_case 格式的 Skill 名称（2-4个单词，全小写，下划线连接）。只输出名称本身。\n示例：\n- "帮我找一个能够读取微博热搜的 skill" → weibo_hot_trends\n- "写七言绝句" → chinese_poetry\n用户需求：${userQuery}`;
  return new Promise((resolve) => {
    const timeout = setTimeout(() => resolve(_sanitizeName(userQuery)), 15000);
    execFile('claude', ['--print', '-p', prompt], { timeout: 15000 }, (err, stdout) => {
      clearTimeout(timeout);
      if (err || !stdout?.trim()) return resolve(_sanitizeName(userQuery));
      resolve(stdout.trim().split('\n')[0].replace(/['"`]/g, '').replace(/[^a-zA-Z0-9_]/g, '').toLowerCase() || _sanitizeName(userQuery));
    });
  });
}

function _sanitizeName(query) {
  const ascii = query.replace(/[^a-zA-Z0-9\s]/g, '').trim();
  return ascii.length > 3 ? ascii.toLowerCase().replace(/\s+/g, '_').substring(0, 40) : `skill_${Date.now()}`;
}

// ── Skill Search ──
router.get('/skills/search', h(async (req, res) => {
  const q = String(req.query.q || '');
  if (!q) return res.status(400).json({ error: 'Bad Request', message: 'Query parameter "q" is required.' });

  const results = registry.searchSkills(q, {
    domain: req.query.domain, type: req.query.type,
    limit: Math.min(parseInt(req.query.limit || '20') || 20, 100),
  });
  if (results.length > 0) return res.json({ results, total: results.length, query: q });

  // 未命中 → 自动创建
  const skillName = await _generateSkillName(q);
  const job = jobManager.createJob({ domain: String(req.query.domain || skillName), scope: '', description: `根据用户需求 "${q}" 自动创建`, keywords: [skillName, ...q.split(/\s+/).slice(0, 5)], apiKey: req.apiKey, user_id: req.user?.id });
  job.skillName = skillName;
  _runSkillCreation(job).catch(err => { jobManager.updateJob(job.jobId, { status: 'failed', error: err.message, progress: '自动创建失败' }); });
  res.json({ results: [], total: 0, query: q, autoCreate: { jobId: job.jobId, skillName, status: job.status, message: `未找到匹配 Skill，已启动创建「${skillName}」。轮询 GET /api/open/jobs/${job.jobId} 查看进度。` } });
}));

router.get('/skills/:name', h((req, res) => {
  const skill = registry.getSkill(req.params.name);
  skill ? res.json(SkillRegistry.toPublicInfo(skill)) : res.status(404).json({ error: 'Skill not found' });
}));

// ── Download ──
router.get('/skills/:name/download', h(async (req, res) => {
  const skill = registry.getSkill(req.params.name);
  if (!skill) return res.status(404).json({ error: 'Skill not found' });
  if (skill.status !== 'enable') return res.status(403).json({ error: 'Skill not available', message: `Status: ${skill.status}` });

  res.setHeader('Content-Type', 'application/zip');
  res.setHeader('Content-Disposition', `attachment; filename="${req.params.name}.zip"`);
  await packager.packageSkillZip(req.params.name, skill, res);

  registry.incrementUseCount(req.params.name);
  registry.incrementDownloadCount(req.params.name);
  const skillDb = require('../services/skill-db');
  skillDb.recordDownload(req.params.name, {
    userId: req.user?.id || 'system', userEmail: req.user?.email || 'system_api_key',
    version: skill.version, ipAddress: req.headers['x-forwarded-for'] || req.socket.remoteAddress,
  });
}));

// ── Create ──
router.post('/skills/create', h(async (req, res) => {
  const { domain, scope, description, keywords, webhookUrl } = req.body;
  if (!domain && !description) return res.status(400).json({ error: 'Bad Request', message: 'At least "domain" or "description" is required.' });

  const existing = registry.searchSkills(String(domain || description), { limit: 3 });
  const job = jobManager.createJob({ domain, scope, description, keywords, webhookUrl, apiKey: req.apiKey, user_id: req.user?.id });
  _runSkillCreation(job).catch(err => { jobManager.updateJob(job.jobId, { status: 'failed', error: err.message, progress: '创建失败' }); });
  res.status(202).json({ jobId: job.jobId, status: job.status, message: `Skill creation job queued. Poll GET /api/open/jobs/${job.jobId} for status.`, similarSkills: existing.length > 0 ? existing.map(s => s.skillName) : undefined });
}));

// ── Jobs ──
router.get('/jobs', h((req, res) => {
  res.json({ jobs: jobManager.listJobs({ apiKey: req.apiKey, limit: parseInt(req.query.limit) || 20 }), total: jobManager.listJobs({ apiKey: req.apiKey }).length });
}));

router.get('/jobs/:jobId', h((req, res) => {
  const job = jobManager.getPublicJob(req.params.jobId);
  job ? res.json(job) : res.status(404).json({ error: 'Job not found' });
}));

router.get('/jobs/:jobId/result', h(async (req, res) => {
  const job = jobManager.getJob(req.params.jobId);
  if (!job) return res.status(404).json({ error: 'Job not found' });
  if (job.status !== 'completed') return res.status(409).json({ error: 'Job not completed', status: job.status, progress: job.progress });
  if (!job.skillName) return res.status(500).json({ error: 'No skill name recorded' });
  res.setHeader('Content-Type', 'application/zip');
  res.setHeader('Content-Disposition', `attachment; filename="${job.skillName}.zip"`);
  await packager.packageSkillZip(job.skillName, registry.getSkill(job.skillName) || {}, res);
}));

// ── Feedback ──
router.post('/skills/:name/feedback', h(async (req, res) => {
  const { feedback, score } = req.body;
  if (!feedback || typeof feedback !== 'string') return res.status(400).json({ error: 'feedback (string) is required' });
  const skill = registry.getSkill(req.params.name);
  if (!skill) return res.status(404).json({ error: `Skill "${req.params.name}" not found` });

  const job = jobManager.createJob({ domain: skill.domain || '', scope: skill.scope || '', description: `[Feedback] ${feedback.substring(0, 100)}`, keywords: skill.keywords || [], apiKey: req.apiKey });
  job.skillName = req.params.name;

  const feedbackDir = path.join(skillsDir, req.params.name, 'feedback');
  fs.mkdirSync(feedbackDir, { recursive: true });
  fs.appendFileSync(path.join(feedbackDir, 'feedback_log.jsonl'), JSON.stringify({ ts: new Date().toISOString(), jobId: job.jobId, feedback, userScore: score || null, apiKey: req.apiKey ? req.apiKey.substring(0, 8) + '***' : null }) + '\n');

  _runFeedbackIteration(job, feedback, skill).catch(err => console.error(`[OpenAPI] Feedback error:`, err));
  res.status(202).json({ jobId: job.jobId, message: '反馈已接收，迭代任务已启动', currentVersion: skill.version });
}));

// ── Updates ──
router.get('/skills/:name/updates', h((req, res) => {
  const skill = registry.getSkill(req.params.name);
  if (!skill) return res.status(404).json({ error: `Skill "${req.params.name}" not found` });
  const hasUpdate = req.query.currentVersion && req.query.currentVersion !== skill.version;
  let changelog = '';
  if (hasUpdate) {
    try { changelog = fs.readFileSync(path.join(skillsDir, req.params.name, 'changelog.md'), 'utf-8'); } catch {}
    registry.recordUpdate(req.params.name, req.query.currentVersion, skill.version);
  }
  res.json({ skillName: req.params.name, latestVersion: skill.version, currentScore: skill.currentScore, hasUpdate: !!hasUpdate, changelog: hasUpdate ? changelog : undefined, downloadCount: skill.downloadCount || 0, updateCount: skill.updateCount || 0 });
}));

// ── Pipelines (简化版) ──
// 读取 .data/pipelines.json
let pipelinesData = { pipelines: [] };
const pipelinesPath = path.resolve(__dirname, '../../.data/pipelines.json');
try { pipelinesData = JSON.parse(fs.readFileSync(pipelinesPath, 'utf-8')); } catch {}

router.get('/pipelines', h((req, res) => {
  const limit = parseInt(req.query.limit) || 20;
  res.json({ results: pipelinesData.pipelines.slice(0, limit), total: pipelinesData.pipelines.length });
}));

router.post('/pipelines', h((req, res) => {
  const { name, description, config } = req.body;
  const newPipeline = { id: `p-${Date.now()}`, name, description, config, status: 'idle', createdAt: new Date().toISOString() };
  pipelinesData.pipelines.push(newPipeline);
  fs.writeFileSync(pipelinesPath, JSON.stringify(pipelinesData, null, 2));
  res.status(201).json(newPipeline);
}));

router.get('/pipelines/:pipelineId', h((req, res) => {
  const pipeline = pipelinesData.pipelines.find(p => p.id === req.params.pipelineId);
  pipeline ? res.json(pipeline) : res.status(404).json({ error: 'Pipeline not found' });
}));

router.put('/pipelines/:pipelineId', h((req, res) => {
  const idx = pipelinesData.pipelines.findIndex(p => p.id === req.params.pipelineId);
  if (idx === -1) return res.status(404).json({ error: 'Pipeline not found' });
  const { name, description, config } = req.body;
  pipelinesData.pipelines[idx] = { ...pipelinesData.pipelines[idx], name, description, config };
  fs.writeFileSync(pipelinesPath, JSON.stringify(pipelinesData, null, 2));
  res.json(pipelinesData.pipelines[idx]);
}));

router.delete('/pipelines/:pipelineId', h((req, res) => {
  const idx = pipelinesData.pipelines.findIndex(p => p.id === req.params.pipelineId);
  if (idx === -1) return res.status(404).json({ error: 'Pipeline not found' });
  pipelinesData.pipelines.splice(idx, 1);
  fs.writeFileSync(pipelinesPath, JSON.stringify(pipelinesData, null, 2));
  res.status(204).send();
}));

router.post('/pipelines/:pipelineId/run', h((req, res) => {
  const pipeline = pipelinesData.pipelines.find(p => p.id === req.params.pipelineId);
  if (!pipeline) return res.status(404).json({ error: 'Pipeline not found' });
  pipeline.status = 'running';
  pipeline.lastRun = new Date().toISOString();
  fs.writeFileSync(pipelinesPath, JSON.stringify(pipelinesData, null, 2));
  // TODO: 实际执行 Pipeline 逻辑
  res.json({ message: 'Pipeline started', pipeline });
}));

// ══════════════════════════════════════
// Internal Pipelines
// ══════════════════════════════════════

async function _runFeedbackIteration(job, feedback, skill) {
  const { ConversationLogger } = require('../services/conversation-logger');
  const taskMgr = require('../services/skill-task-manager');
  const { randomUUID } = require('crypto');
  const { resolveTrainedSkillDir } = require('../services/skill-dir-manager');
  const skillName = job.skillName;
  const userId = job.user_id || null;

  // 优先从训练目录解析 skill，回退 data/skills/
  const skillDir = (userId && resolveTrainedSkillDir(skillName, userId))
    || resolveSkillDir(skillName)
    || path.join(skillsDir, skillName);

  const conversationsDir = path.resolve(__dirname, '../../conversations');
  const userConvDir = userId ? path.join(conversationsDir, `user-${userId}`) : conversationsDir;
  const conversationId = `api-feedback-${job.jobId}`;
  const logger = new ConversationLogger(userConvDir, conversationId, `msg-${Date.now()}-${randomUUID().substring(0, 8)}`, { userId });

  taskMgr.initTask(skillDir, { skillName, domain: skill.domain, scope: skill.scope, description: feedback, source: 'feedback', jobId: job.jobId, feedback, pipelineType: 'feedback' });
  logger.ensureMeta(`[Feedback] ${skillName}: ${feedback.substring(0, 80)}`);
  logger.logUserMessage(`[Feedback] ${feedback}`);

  try {
    const { loadConfigFromSkills } = require('../src/core/skill-config-loader');
    const backends = JSON.parse(fs.readFileSync(path.join(__dirname, '../config/backends.json'), 'utf-8'));
    const AgentManager = require('../src/core/agent-manager');
    const agentWorkDir = path.dirname(skillDir);
    const manager = new AgentManager(loadConfigFromSkills(skillsDir, backends), agentWorkDir);
    const onData = (agent) => (chunk) => { if (chunk?.trim()) logger.logStreamChunk(agent, chunk); };

    let existingKnowhow = '', existingBenchmark = '';
    try { existingKnowhow = fs.readFileSync(path.join(skillDir, 'hunt', 'knowhow.md'), 'utf-8'); } catch {}
    try { existingKnowhow = existingKnowhow || fs.readFileSync(path.join(skillDir, 'hunter', 'knowhow.md'), 'utf-8'); } catch {}
    try { existingBenchmark = fs.readFileSync(path.join(skillDir, 'digest', 'benchmark.md'), 'utf-8'); } catch {}

    // Step 1: Re-Hunt
    taskMgr.updateStep(skillDir, 're_hunt', 'running');
    jobManager.updateJob(job.jobId, { status: 'hunting', progress: '根据反馈重新猎取知识...', skillName, conversationId });
    await manager.callAgent('l3-hunt', `用户对 Skill "${skillName}" 反馈：\n> ${feedback}\n\n请结合已有知识补充猎取。现有 knowhow 摘要:\n${existingKnowhow.substring(0, 500)}`, { onData: onData('l3-hunt') });
    taskMgr.updateStep(skillDir, 're_hunt', 'done');

    // Step 2: Re-Digest
    taskMgr.updateStep(skillDir, 're_digest', 'running');
    jobManager.updateJob(job.jobId, { status: 'digesting', progress: '迭代评估基准...' });
    await manager.callAgent('l2-digest', `请根据用户反馈迭代 Skill "${skillName}" 的 benchmark。反馈: ${feedback}\n现有 benchmark 摘要:\n${existingBenchmark.substring(0, 300)}`, { onData: onData('l2-digest') });
    taskMgr.updateStep(skillDir, 're_digest', 'done');

    // Step 3: Evolve
    taskMgr.updateStep(skillDir, 'evolve', 'running');
    jobManager.updateJob(job.jobId, { status: 'evolving', progress: '进化优化中 (目标 ≥95分)...' });
    const evolveResult = await manager.callAgent('innovator-evolver', `请对 Skill "${skillName}" 进行进化优化。反馈: ${feedback}\n通过阈值: 95 分, 最大迭代: 10 次`, { onData: onData('innovator-evolver') });
    taskMgr.updateStep(skillDir, 'evolve', 'done');

    // Step 4: Publish
    taskMgr.updateStep(skillDir, 'publish', 'running');
    jobManager.updateJob(job.jobId, { status: 'publishing', progress: '发布新版本...' });
    const scoreMatch = (evolveResult.output || '').match(/最终分数[：:]\s*(\d+)/);
    const finalScore = scoreMatch ? parseInt(scoreMatch[1]) : null;
    const updatedSkill = registry.bumpVersion(skillName, 'minor', finalScore);

    const changelogPath = path.join(skillDir, 'changelog.md');
    let existing = ''; try { existing = fs.readFileSync(changelogPath, 'utf-8'); } catch {}
    fs.writeFileSync(changelogPath, `## v${updatedSkill.version} (${new Date().toISOString().substring(0, 10)})\n\n**触发**: 用户反馈\n> ${feedback}\n\n**改进**: Re-Hunt → Re-Digest → Evolve\n${finalScore ? `**评分**: ${finalScore}/100` : ''}\n\n---\n\n${existing}`, 'utf-8');
    taskMgr.updateStep(skillDir, 'publish', 'done');

    const { InnovatorService } = require('../services/innovator-service');
    new InnovatorService({ skillsDir, skillsDataDir: config.skillsDataDir, trainedSkillsDir: config.trainedSkillsDir }).autoRegisterNewSkills();

    logger.logResult({ type: 'feedback_iteration', jobId: job.jobId, skillName, newVersion: updatedSkill.version, finalScore, feedback });
    jobManager.updateJob(job.jobId, { status: 'completed', progress: `迭代完成，新版本 v${updatedSkill.version}`, conversationId, result: { skillName, newVersion: updatedSkill.version, finalScore, feedback } });
    try { await manager.closeAllSessions(); } catch {}
  } catch (err) {
    logger.logError(err.message);
    const nextStep = taskMgr.getNextPendingStep(skillDir);
    if (nextStep) taskMgr.updateStep(skillDir, nextStep, 'failed', err.message);
    jobManager.updateJob(job.jobId, { status: 'failed', error: err.message, progress: `迭代失败: ${err.message}` });
    throw err;
  }
}

async function _runSkillCreation(job, resumeFromStep = null) {
  const { InnovatorService } = require('../services/innovator-service');
  const { ConversationLogger } = require('../services/conversation-logger');
  const taskMgr = require('../services/skill-task-manager');
  const { randomUUID } = require('crypto');
  const { initTrainedSkillDir } = require('../services/skill-dir-manager');

  const userId = job.user_id || null;
  const suggestedName = job.skillName || (job.domain || job.description || 'new_skill').toLowerCase().replace(/[^a-z0-9\u4e00-\u9fff]+/g, '_').replace(/^_|_$/g, '').substring(0, 40);
  job.skillName = suggestedName;

  // 有 userId → 写入训练目录；无 → 回退 data/skills/
  const skillDir = userId
    ? initTrainedSkillDir(suggestedName, userId)
    : path.join(skillsDir, suggestedName);

  const conversationsDir = path.resolve(__dirname, '../../conversations');
  const userConvDir = userId ? path.join(conversationsDir, `user-${userId}`) : conversationsDir;
  const conversationId = `api-create-${job.jobId}`;
  const logger = new ConversationLogger(userConvDir, conversationId, `msg-${Date.now()}-${randomUUID().substring(0, 8)}`, { userId });
  const isResume = !!resumeFromStep;

  if (!isResume) taskMgr.initTask(skillDir, { skillName: suggestedName, domain: job.domain, scope: job.scope, description: job.description, keywords: job.keywords, source: job.source || 'api', jobId: job.jobId, userId: String(userId || '') });
  logger.ensureMeta(`[API] 创建 Skill: ${suggestedName}${isResume ? ' (恢复)' : ''}`);
  logger.logUserMessage(`${isResume ? '[恢复]' : '[Open API]'} Skill 创建：${suggestedName}`);

  try {
    jobManager.updateJob(job.jobId, { status: 'hunting', progress: isResume ? `恢复中 (从 ${resumeFromStep})...` : '正在猎取领域知识...', skillName: suggestedName, conversationId });
    try {
      registry.registerSkill({
        skillName: suggestedName, description: job.description || `${job.domain} 相关 Skill`,
        domain: job.domain || '', scope: job.scope || '', keywords: job.keywords || [],
        directory: skillDir, userId: String(userId || ''), storageType: userId ? 'trained' : 'marketplace',
      });
    } catch (err) {
      if (err.message.includes('already exists')) registry.updateSkill(suggestedName, { status: 'training', directory: skillDir });
      else throw err;
    }

    const { loadConfigFromSkills } = require('../src/core/skill-config-loader');
    const backends = JSON.parse(fs.readFileSync(path.join(__dirname, '../config/backends.json'), 'utf-8'));
    const AgentManager = require('../src/core/agent-manager');
    const agentWorkDir = path.dirname(skillDir);
    const manager = new AgentManager(loadConfigFromSkills(skillsDir, backends), agentWorkDir);
    const onData = (agent) => (chunk) => { if (chunk?.trim()) logger.logStreamChunk(agent, chunk); };
    const startIdx = resumeFromStep ? ['hunt', 'digest', 'skill_create'].indexOf(resumeFromStep) : 0;

    if (startIdx <= 0) {
      taskMgr.updateStep(skillDir, 'hunt', 'running');
      jobManager.updateJob(job.jobId, { status: 'hunting', progress: '正在猎取领域知识 (Hunt)...' });
      await manager.callAgent('l3-hunt', `请为 ${suggestedName} 猎取知识。领域: ${job.domain || '未指定'}, 描述: ${job.description || '未指定'}`, { onData: onData('l3-hunt') });
      taskMgr.updateStep(skillDir, 'hunt', 'done');
    }
    if (startIdx <= 1) {
      taskMgr.updateStep(skillDir, 'digest', 'running');
      jobManager.updateJob(job.jobId, { status: 'digesting', progress: '正在消化提炼知识 (Digest)...' });
      await manager.callAgent('l2-digest', `请消化 ${suggestedName}/hunter/ 下的知识，生成 benchmark。`, { onData: onData('l2-digest') });
      taskMgr.updateStep(skillDir, 'digest', 'done');
    }
    if (startIdx <= 2) {
      taskMgr.updateStep(skillDir, 'skill_create', 'running');
      jobManager.updateJob(job.jobId, { status: 'creating', progress: '正在生成 SKILL.md...' });
      const allSkills = registry.listSkills();
      const availableAtoms = allSkills.filter(s => s.layer === 1 || s.layer === 2).map(s => `  - ${s.skillName} (L${s.layer}): ${s.description || '无描述'}`).join('\n');
      await manager.callAgent('skill-creator', `请为 ${suggestedName} 创建 SKILL.md。描述: ${job.description || '未指定'}\n可用 L1/L2 技能:\n${availableAtoms}`, { onData: onData('skill-creator') });
      taskMgr.updateStep(skillDir, 'skill_create', 'done');
    }

    const innovator = new InnovatorService({ skillsDir, skillsDataDir: config.skillsDataDir, trainedSkillsDir: config.trainedSkillsDir });
    innovator.autoRegisterNewSkills();
    logger.logResult({ type: 'api_skill_creation', jobId: job.jobId, skillName: suggestedName, resumed: isResume });
    jobManager.updateJob(job.jobId, { status: 'completed', progress: 'Skill 创建完成', conversationId, result: { skillName: suggestedName, output: 'Skill 创建完成' } });
    registry.updateSkill(suggestedName, { status: 'enable' });
    try { await manager.closeAllSessions(); } catch {}
  } catch (err) {
    logger.logError(err.message);
    const nextStep = taskMgr.getNextPendingStep(skillDir);
    if (nextStep) taskMgr.updateStep(skillDir, nextStep, 'failed', err.message);
    jobManager.updateJob(job.jobId, { status: 'failed', error: err.message, progress: `创建失败: ${err.message}` });
    try { registry.updateSkill(suggestedName, { status: 'enable' }); } catch {}
    throw err;
  }
}

module.exports = router;
module.exports._jobManager = jobManager;
module.exports._runSkillCreation = _runSkillCreation;
module.exports._runFeedbackIteration = _runFeedbackIteration;