#!/usr/bin/env node
// patch-x06: processLine() 中 return 应为 continue，小 part 跳过导致同行大 part 丢失
'use strict';
const fs = require('fs');
const path = require('path');

const SENTINEL = '// [PATCH-X06-CONTINUE]';
const target = path.join(__dirname, '..', '..', 'hooks', 'pre-compact-handoff.js');

if (!fs.existsSync(target)) { process.stdout.write('[SKIP] not found\n'); process.exit(0); }

let raw = fs.readFileSync(target, 'utf8');
if (raw.includes(SENTINEL)) { process.stdout.write('[SKIP] already applied\n'); process.exit(0); }

const useCRLF = raw.includes('\r\n');
let content = useCRLF ? raw.replace(/\r\n/g, '\n') : raw;

const bak = target + '.bak.x06';
if (!fs.existsSync(bak)) fs.writeFileSync(bak, raw);

const OLD = '    if (size < 500) return;';
const NEW = `    if (size < 500) continue; ${SENTINEL}`;

if (!content.includes(OLD)) {
  process.stdout.write('[ERROR] old pattern not found\n'); process.exit(1);
}
content = content.replace(OLD, NEW);
const final = useCRLF ? content.replace(/\n/g, '\r\n') : content;
fs.writeFileSync(target, final, 'utf8');

const v = fs.readFileSync(target, 'utf8');
process.stdout.write(v.includes(SENTINEL) ? '[DONE] patch-x06 applied\n' : '[ERROR] verify failed\n');
process.exit(v.includes(SENTINEL) ? 0 : 1);