'use strict';
const assert = require('node:assert');
const fs = require('node:fs');
const path = require('node:path');

// Pure file-content check (this test doesn't require electron).
const main = fs.readFileSync(path.join(__dirname, '..', 'main.js'), 'utf8');

let passed = 0;
function check(name, fn) {
  try { fn(); console.log('  ok -', name); passed++; }
  catch (e) { console.error('  FAIL -', name, e.message); process.exitCode = 1; }
}

check('main.js contains exactly one createFramelessWindow definition', () => {
  const re = /function createFramelessWindow\s*\(/g;
  const matches = main.match(re) || [];
  assert.strictEqual(matches.length, 1, `found ${matches.length} occurrences, expected 1`);
});

check('createMainWindow and openSettingsWindow both call createFramelessWindow', () => {
  const calls = main.match(/createFramelessWindow\s*\(/g) || [];
  // 1 definition + at least 2 callers (main + settings) = 3+ occurrences
  assert.ok(calls.length >= 3, `expected >=3 occurrences, got ${calls.length}`);
});

check('createFramelessWindow 不再硬编码 #FFFFFF', () => {
  // 抓出 createFramelessWindow 的整个函数体
  const fn = main.match(/function createFramelessWindow\s*\([\s\S]*?\n\}/);
  assert.ok(fn, '找不到 createFramelessWindow');
  assert.ok(
    !/backgroundColor:\s*['"]#FFFFFF['"]/.test(fn[0]),
    'createFramelessWindow 还硬编码 #FFFFFF 首帧背景色'
  );
});

check('createFramelessWindow 引用 themeBgColor', () => {
  const fn = main.match(/function createFramelessWindow\s*\([\s\S]*?\n\}/);
  assert.ok(fn, '找不到 createFramelessWindow');
  assert.ok(
    /themeBgColor\s*\(/.test(fn[0]),
    'createFramelessWindow 没引用 themeBgColor'
  );
});

check('createFramelessWindow 拒绝新开窗口请求（外链不能弹裸窗口）', () => {
  // 关于页链接走 shell.openExternal；这里是纵深防御：漏过点击拦截的
  // 打开方式（中键 / 拖拽）也不能弹出一个没有 preload 的外部窗口。
  const fn = main.match(/function createFramelessWindow\s*\([\s\S]*?\n\}/);
  assert.ok(fn, '找不到 createFramelessWindow');
  assert.match(fn[0], /setWindowOpenHandler\(/, '未接线 setWindowOpenHandler');
  assert.match(fn[0], /action:\s*['"]deny['"]/, '新开窗口未被拒绝');
});

check('createFramelessWindow 拦截页内导航（外部 URL 不能把窗口顶掉）', () => {
  const fn = main.match(/function createFramelessWindow\s*\([\s\S]*?\n\}/);
  assert.ok(fn, '找不到 createFramelessWindow');
  assert.match(fn[0], /will-navigate/, '未接线 will-navigate');
  assert.match(fn[0], /preventDefault\(\)/, '导航未被阻止');
});