/*** 皮肤包冒烟：只测纯逻辑（今日覆盖行级差异对齐），DOM 渲染靠演示页人工过 ***/
import { alignMiddle, diffLines, normalizeLine, toRows, DP_LIMIT } from '../dist/diffKit.js';

let failed = 0;
/*** 断言：打印一条结果，失败计数 +1 ***/
const ok = (label, cond) => {
  if (cond) { console.log(`ok - ${label}`); return; }
  console.error(`FAIL - ${label}`);
  failed += 1;
};

// 1) 完全相同：全是 same，没有增删
const same = diffLines('a\nb\nc', 'a\nb\nc', false);
ok('相同文本全是 same', same.length === 3 && same.every((o) => o.type === 'same'));
// 2) 纯新增一行
const added = diffLines('a\nc', 'a\nb\nc', false);
ok('中间插入一行 → 恰好 1 条 add', added.filter((o) => o.type === 'add').length === 1 && added.filter((o) => o.type === 'del').length === 0);
// 3) 纯删除一行
const removed = diffLines('a\nb\nc', 'a\nc', false);
ok('中间删除一行 → 恰好 1 条 del', removed.filter((o) => o.type === 'del').length === 1 && removed.filter((o) => o.type === 'add').length === 0);
// 4) 尾部换行不产生假差异
ok('尾部换行不算差异', diffLines('a\nb\n', 'a\nb', false).every((o) => o.type === 'same'));
// 5) 忽略行内空白：只差缩进时无增删，且显示保留原文
const ws = diffLines('if (a) {\n    return 1;\n}', 'if (a) {\n  return 1;\n}', true);
ok('忽略空白后缩进差不计入差异', ws.every((o) => o.type === 'same') && ws[1].text.includes('    '));
// 6) 不忽略空白时同一对文本必须报差异（对照组：证明开关真的起作用）
ok('不忽略空白时同一对文本报增删', diffLines('if (a) {\n    return 1;\n}', 'if (a) {\n  return 1;\n}', false).some((o) => o.type !== 'same'));
// 7) 行内多空格归一
ok('行内连续空白压成一个空格', normalizeLine('  a   b\t c  ') === 'a b c');
// 8) 超限退化：仍保证「旧行全 del + 新行全 add」，不丢内容
const bigA = Array.from({ length: 700 }, (_, i) => `a${i}`);
const bigB = Array.from({ length: 700 }, (_, i) => `b${i}`);
const big = alignMiddle(toRows(bigA.join('\n'), false), toRows(bigB.join('\n'), false));
ok(`超限（>${DP_LIMIT}）退化为整段替换`, big.filter((o) => o.type === 'del').length === 700 && big.filter((o) => o.type === 'add').length === 700);

if (failed) {
  console.error(`皮肤冒烟失败 ${failed} 条`);
  process.exit(1);
}
console.log('SKIN SMOKE OK');