// 基座影响审计：逐行验证本次换肤的改动是否「只改颜色」
// 做法：解析 git diff -U0，把每段 hunk 的「删除行」与「新增行」都做颜色归一化
//       （#RRGGBB / rgb() / rgba() → 占位符），再比对两侧是否等价。
//       等价 = 纯换色；不等价 = 有非颜色改动，单独列出待人工判断。
// 用法: node _design-test/audit-color-only.js
const { execSync } = require('child_process');

const ZF = 'e:/KF_7/ZhenOS-ZF';
const raw = execSync('git -c core.quotepath=false diff -U0 --no-color', {
  cwd: ZF, maxBuffer: 1 << 28, encoding: 'utf8'
});

const CO = /#[0-9a-fA-F]{3,8}\b|rgba?\([^)]*\)|\bhsl\([^)]*\)/g;
const norm = s => s.replace(CO, '@C@').replace(/\s+/g, ' ').trim();

const isComment = s => {
  const t = s.trim();
  return t.startsWith('//') || t.startsWith('/*') || t.startsWith('*') ||
         t.startsWith('<!--') || t.startsWith('{#') || t === '' ;
};

let curFile = '';
const offenders = [];
let hunks = 0, colorOnly = 0, commentOnly = 0, removed = 0, added = 0;

const lines = raw.split('\n');
let bucket = null;
const flush = () => {
  if (!bucket) return;
  const { file, oldL, newL } = bucket;
  hunks++;
  removed += oldL.length; added += newL.length;
  const a = oldL.map(norm).sort().join('\n');
  const b = newL.map(norm).sort().join('\n');
  if (a === b) { colorOnly++; return; }
  // 只有注释行不同 → 视为注释改动（不影响行为）
  const o = oldL.filter(l => !isComment(l)), n2 = newL.filter(l => !isComment(l));
  if (o.map(norm).sort().join('\n') === n2.map(norm).sort().join('\n')) { commentOnly++; return; }
  offenders.push({ file, oldL, newL });
  bucket = null;
};

for (const ln of lines) {
  if (ln.startsWith('diff --git ')) { flush(); bucket = null; curFile = ln.split(' b/').pop(); continue; }
  if (ln.startsWith('+++ ') || ln.startsWith('--- ') || ln.startsWith('index ') ||
      ln.startsWith('new file') || ln.startsWith('deleted file') || ln.startsWith('similarity')) continue;
  if (ln.startsWith('@@')) { flush(); bucket = { file: curFile, oldL: [], newL: [] }; continue; }
  if (!bucket) continue;
  if (ln.startsWith('-')) bucket.oldL.push(ln.slice(1));
  else if (ln.startsWith('+')) bucket.newL.push(ln.slice(1));
}
flush();

console.log('=== 换肤改动审计（git diff -U0 逐段比对）===');
console.log('  变更行数        新增 ' + added + ' / 删除 ' + removed);
console.log('  代码段(hunk)    共 ' + hunks);
console.log('    · 纯颜色替换      ' + colorOnly);
console.log('    · 仅注释差异      ' + commentOnly);
console.log('    · 需要人工复核    ' + offenders.length);

// 本次「整文件重写」的样式文件 —— 它们的差异里必然含注释/结构变化，属已知改动，单列
const REWRITTEN = new Set([
  'ruoyi-ui/src/assets/styles/element-variables.scss',
  'ruoyi-ui/src/assets/styles/theme.scss',
  'ruoyi-ui/src/assets/styles/element-ui.scss',
  'ruoyi-ui/src/assets/styles/variables.scss',
  'ruoyi-ui/src/assets/styles/ruoyi.scss',
  'ruoyi-ui/src/assets/styles/sidebar.scss',
  'ruoyi-ui/src/assets/styles/btn.scss',
  'ruoyi-ui/src/assets/styles/mixin.scss',
  'zhenfang-uni/src/uni.scss'
]);

const byFile = {};
offenders.forEach(o => { (byFile[o.file] = byFile[o.file] || []).push(o); });
const keys = Object.keys(byFile);
const rewritten = keys.filter(k => REWRITTEN.has(k));
const others = keys.filter(k => !REWRITTEN.has(k));

console.log('\n  ── 重写类文件（已知改动，含注释/结构重排）：' + rewritten.length + ' 个');
rewritten.forEach(k => console.log('     ' + String(byFile[k].length).padStart(3) + ' 段  ' + k));

console.log('\n  ── 其它文件的疑似非颜色改动：' + others.length + ' 个文件');
if (!others.length) {
  console.log('     无 —— 业务页面/组件/后端相关文件全部只改了颜色');
} else {
  others.forEach(k => {
    console.log('\n  ' + k + '   (' + byFile[k].length + ' 段)');
    byFile[k].slice(0, 4).forEach(o => {
      o.oldL.slice(0, 3).forEach(l => console.log('    - ' + l.trim()));
      o.newL.slice(0, 3).forEach(l => console.log('    + ' + l.trim()));
      console.log('    ---');
    });
  });
}