/**
 * 临时调研：Iconify 官方集合 vs 本地已收录，找出未收录且许可证合规的候选源
 * 输出：未收录集合清单（id / 图标数 / license / 是否合规 / 收录价值初判）
 */
'use strict';
const https = require('https');
const fs = require('fs');
const path = require('path');

const ROOT = process.cwd();
const SOURCES = require(path.join(ROOT, 'js', 'data', 'icon-sources.js'));

// 本地已收录的 iconify prefix（npm: '@iconify-json/xxx' 的 xxx）
const localPrefixes = new Set();
for (const s of SOURCES) {
  const m = String(s.npm || '').match(/@iconify-json\/([\w-]+)/);
  if (m) localPrefixes.add(m[1]);
  // 有些源 id 即 prefix
  localPrefixes.add(s.id);
}

function fetch(url, redirects) {
  return new Promise((resolve, reject) => {
    const req = https.get(url, { timeout: 60000 }, (res) => {
      if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location) {
        const next = res.headers.location;
        if (next.startsWith('/')) return resolve(fetch('https://api.iconify.design' + next, (redirects || 0) + 1));
        return resolve(fetch(next, (redirects || 0) + 1));
      }
      if (res.statusCode !== 200) { reject(new Error('HTTP ' + res.statusCode)); res.resume(); return; }
      const chunks = [];
      res.on('data', (c) => chunks.push(c));
      res.on('end', () => resolve(Buffer.concat(chunks).toString('utf8')));
    });
    req.on('error', reject);
    req.setTimeout(60000, () => { req.destroy(new Error('timeout')); });
  });
}

(async () => {
  console.log('拉取 Iconify 官方集合列表…');
  const raw = await fetch('https://api.iconify.design/collections');
  const json = JSON.parse(raw);
  const all = Object.entries(json.collections || json);
  console.log('顶层键:', Object.keys(json).slice(0, 10).join(', '));

  // 许可证过滤：排除 BY-SA / BY-NC / BY-ND / GPL / -NC-（兼容空格分隔形式）
  const badRe = /by[\s-]?sa|by[\s-]?nc|by[\s-]?nd|gpl|nc-|cc[\s-]?by[\s-]?nc/i;
  const missing = [];
  for (const [prefix, info] of all) {
    if (localPrefixes.has(prefix)) continue;
    const license = info.license ? info.license.title : 'unknown';
    const bad = badRe.test(license);
    missing.push({ prefix, total: info.total, license, bad, author: info.author && info.author.name });
  }

  // 未收录 + 合规（或 license unknown 单独列出）
  const good = missing.filter(m => !m.bad);
  const bad = missing.filter(m => m.bad);
  good.sort((a, b) => b.total - a.total);
  bad.sort((a, b) => b.total - a.total);

  console.log(`\n=== 官方集合总数: ${all.length} | 本地已收录 iconify prefix: ${localPrefixes.size} ===`);
  console.log(`\n=== 未收录 + 许可证合规（${good.length} 个）===\n`);
  for (const m of good) {
    console.log(`  ${m.prefix.padEnd(28)} ${String(m.total).padStart(6)}  ${m.license.padEnd(28)} ${m.author || ''}`);
  }
  console.log(`\n=== 未收录 + 许可证不合规（${bad.length} 个，仅供参考）===\n`);
  for (const m of bad.slice(0, 60)) {
    console.log(`  ${m.prefix.padEnd(28)} ${String(m.total).padStart(6)}  ${m.license.padEnd(28)} ${m.author || ''}`);
  }
})().catch((e) => { console.error('❌', e.message); process.exit(1); });