#!/usr/bin/env node
// Bring runs played elsewhere (a bench-pack folder, another machine, another
// harness) into bench/runs so the observer page and the report can see them.
//   node scripts/bench-import.mjs --from=bench/pack/runs [--tag=grok] [--force]
import { existsSync, mkdirSync, readdirSync, readFileSync, writeFileSync } from 'node:fs';
import { resolve } from 'node:path';
import { rebuildIndex } from './bench-index.mjs';

const flags = Object.fromEntries(process.argv.slice(2).map(a => { const [k, ...v] = a.replace(/^--/, '').split('='); return [k, v.length ? v.join('=') : true]; }));
if (!flags.from) { console.error('需要 --from=<存放 runs 的目录>'); process.exit(1); }
const from = resolve(String(flags.from));
const to = resolve('bench/runs');
if (!existsSync(from)) { console.error(`没有 ${from}`); process.exit(1); }
mkdirSync(to, { recursive: true });

const tag = flags.tag ? String(flags.tag).replace(/[^\w.-]+/g, '-') : null;
let imported = 0, skipped = 0, bad = 0;
for (const file of readdirSync(from)) {
  if (!file.endsWith('.json') || file === 'index.json') continue;
  let run;
  try { run = JSON.parse(readFileSync(resolve(from, file), 'utf8')); } catch { bad++; continue; }
  if (!run?.run || !run.level?.cells || !Array.isArray(run.steps)) { bad++; continue; }
  const name = tag ? `${tag}-${run.run}` : run.run;
  const target = resolve(to, `${name}.json`);
  if (existsSync(target) && !flags.force) { skipped++; continue; }
  run.run = name;
  run.imported = { from: String(flags.from), at: new Date().toISOString() };
  writeFileSync(target, JSON.stringify(run));
  imported++;
}
const index = rebuildIndex();
console.log(`导入 ${imported} 局${skipped ? `，跳过 ${skipped} 局（已存在，用 --force 覆盖）` : ''}${bad ? `，忽略 ${bad} 个无效文件` : ''}`);
console.log(`bench/runs 现有 ${index.length} 局 · 汇总：node scripts/bench-report.mjs`);