#!/usr/bin/env node
/**
 * Patch W6: route-compliance-gate.js L28 单行三目链重构
 * 将 160+ 字符一行 IIFE 拆成可读的 resolve 函数
 * 幂等: sentinel W6_DISK_CACHE_RESOLVE_v1
 */
const fs = require('fs');
const path = require('path');

const TARGET = path.join(__dirname, '..', '..', 'hooks', 'route-compliance-gate.js');
const SENTINEL = 'W6_DISK_CACHE_RESOLVE_v1';

function main() {
  const src = fs.readFileSync(TARGET, 'utf8');
  if (src.includes(SENTINEL)) { console.error('[patch-w6] already applied'); process.exit(0); }

  const oldLine = "const DISK_CACHE_FILE = require('path').join((function(){ try { return require('../scripts/paths.config.js').PATHS.root; } catch { return require('path').join(process.env.USERPROFILE || process.env.HOME, '.claude'); } })(), 'debug', '.disk-cache.json');";
  if (!src.includes(oldLine)) { console.error('[patch-w6] anchor missing'); process.exit(3); }

  const newBlock =
    "// " + SENTINEL + ": 拆解 resolve 路径，提升可读性\n" +
    "function _resolveClaudeRootForCache() {\n" +
    "  try { return require('../scripts/paths.config.js').PATHS.root; }\n" +
    "  catch { return require('path').join(process.env.USERPROFILE || process.env.HOME, '.claude'); }\n" +
    "}\n" +
    "const DISK_CACHE_FILE = require('path').join(_resolveClaudeRootForCache(), 'debug', '.disk-cache.json');";

  const patched = src.replace(oldLine, newBlock);
  if (patched === src) { console.error('[patch-w6] no change'); process.exit(4); }

  const bakDir = path.join(path.dirname(TARGET), 'archive');
  if (!fs.existsSync(bakDir)) fs.mkdirSync(bakDir, { recursive: true });
  fs.writeFileSync(path.join(bakDir, 'route-compliance-gate.js.bak.w6.' + Date.now()), src);
  const tmp = TARGET + '.tmp.' + process.pid;
  fs.writeFileSync(tmp, patched);
  fs.renameSync(tmp, TARGET);
  console.error('[patch-w6] applied');
}
main();