SimpleNav/index.php

<?php
/**
 * 简航 SimpleNav —— 前台首页
 * 顶部：品牌 + 搜索引擎切换 + 搜索框（带联想下拉）
 * 中部：常用 / 工具等网格板块
 * 下部：合集（标签页折叠 或 全部平铺，后台可切换）
 */
declare(strict_types=1);
require_once __DIR__ . '/functions.php';
send_no_cache();

$pdo = db();

// 前台数据
$gridGroups = $pdo->query("SELECT * FROM groups WHERE is_visible=1 AND display='grid' ORDER BY sort_order, id")->fetchAll();
$tabGroups  = $pdo->query("SELECT * FROM groups WHERE is_visible=1 AND display='tabs' ORDER BY sort_order, id")->fetchAll();
$engines    = $pdo->query("SELECT * FROM engines WHERE is_active=1 ORDER BY sort_order, id")->fetchAll();

// 合集区的显示方式（后台「设置 → 合集显示方式」）：
//   tabs = 标签页折叠（默认）—— 一次只平铺当前这一个合集
//   flat = 全部平铺        —— 每个合集各占一块，一眼看全、不用点
$collLayout = setting('collections_layout', 'tabs') === 'flat' ? 'flat' : 'tabs';

/** 站点链接与顶部搜索框的打开方式（后台「设置 → 打开方式」）
 *  返回 `_blank`（新标签页，默认，等同改造前的旧行为）或 `_self`（当前页面）。
 *  ⚠️ 搜索框与站点格必须共用这一个来源，不要在任何一处写死 target。 */
function open_target(): string
{
    return setting('open_blank', '1') === '1' ? '_blank' : '_self';
}

$openTarget = open_target();
$openMode   = $openTarget === '_blank' ? 'blank' : 'self';

// 联想词的选中按键（后台「设置 → 联想词按键」）：
//   both = ↓/↑ 与 , . 都认（默认） ／ arrows = 只认 ↓/↑ ／ punct = 只认 , 和 .
// 白名单回退：任何非法值都回到 both（默认值，与 db.php 一致），别让手改库/被篡改的表单把交互搞坏。
$suggestKeys = setting('suggest_keys', 'both');
if (!in_array($suggestKeys, ['arrows', 'punct', 'both'], true)) { $suggestKeys = 'both'; }

// 默认引擎
$defSlug = setting('default_engine', 'bing');
$default = null;
foreach ($engines as $en) {
    if ($en['slug'] === $defSlug) { $default = $en; break; }
}
if ($default === null) { $default = $engines[0] ?? null; }

$primary = setting('primary_color', '#2F6BF7');

// 副标题（后台「设置 → 副标题」）。
// ⚠️ 允许为空：用户清空后就**不显示**副标题，不要回退成默认文案 ——
//    这正是 bug 的现场（原先空串被当成「未设置」，删了照样显示）。
//    空串原样取出（默认值取 ''），渲染处再按需判断是否输出。
$subtitle = setting('subtitle', '');

function sites_of(int $gid): array
{
    $st = db()->prepare("SELECT * FROM sites WHERE group_id=? AND is_visible=1 ORDER BY sort_order, id");
    $st->execute([$gid]);
    return $st->fetchAll();
}

function site_label(array $s): string
{
    return $s['short_name'] !== '' ? $s['short_name'] : ($s['name'] !== '' ? $s['name'] : domain_of($s['url']));
}

/** 渲染一个网站格（网格板块与合集共用） */
function site_tile(array $s): void
{
    $label = site_label($s);
    $src   = icon_src($s['icon']);
    // 打开方式与顶部搜索框同源（见 open_target()）：新标签页 or 当前页面
    $tgt   = open_target();
    ?>
    <li class="site">
      <a href="<?= e($s['url']) ?>" target="<?= e($tgt) ?>"<?= $tgt === '_blank' ? ' rel="noopener"' : '' ?> title="<?= e($s['name'] ?: $label) ?>">
        <?php if ($src): ?>
          <img class="icon" src="<?= e($src) ?>" alt="" loading="lazy">
        <?php else: ?>
          <span class="ico-letter" style="background:<?= e(letter_color($label)) ?>"><?= e(mb_substr($label, 0, 1)) ?></span>
        <?php endif; ?>
        <span class="name"><?= e($label) ?></span>
      </a>
    </li>
    <?php
}
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title><?= e(site_name()) ?><?= $subtitle !== '' ? ' · ' . e($subtitle) : '' ?></title>
<meta name="description" content="<?= e(site_name()) ?> —— 个人网站导航">
<meta name="theme-color" content="<?= e($primary) ?>">
<!-- 站点图标（favicon / apple-touch / PWA manifest）：有自定义就用自定义，
     没有就完全退回内置资源。三处页面共用 site_icon_head()，避免半生效。 -->
<?= site_icon_head() ?>
<link rel="stylesheet" href="<?= e(asset('assets/css/style.css')) ?>">
<?php if ($primary !== '#2F6BF7'): ?>
<style>:root { --primary: <?= e($primary) ?>; }</style>
<?php endif; ?>
</head>
<body data-open="<?= e($openMode) ?>">
<div class="container">

  <!-- 顶部品牌区 -->
  <header class="hero" data-site-icon="<?= e(site_icon_mode()) ?>">
    <img class="logo" src="<?= e(site_icon_url('logo', 512) ?: asset('assets/img/logo.svg')) ?>" alt="<?= e(site_name()) ?>">
    <h1><?= e(site_name()) ?></h1>
    <?php if ($subtitle !== ''): ?>
      <p><?= e($subtitle) ?></p>
    <?php endif; ?>
  </header>

  <!-- 顶部搜索 -->
  <div id="search" class="s-search">
    <div class="search-type" id="engine-tabs">
      <?php foreach ($engines as $en): ?>
        <label class="s-engine<?= $default && $en['slug'] === $default['slug'] ? ' active' : '' ?>"
               data-search="<?= e($en['search_url']) ?>"
               data-param="<?= e($en['param']) ?>"
               data-slug="<?= e($en['slug']) ?>"
               data-placeholder="<?= e($en['name']) ?>搜索"
               style="--ec:<?= e($en['color']) ?>">
          <span><?= e($en['name']) ?></span>
        </label>
      <?php endforeach; ?>
      <?php if (!$engines): ?>
        <label class="s-engine active" data-search="https://cn.bing.com/search" data-param="q" data-slug="" data-placeholder="搜索"><span>搜索</span></label>
      <?php endif; ?>
    </div>

    <form id="search-form" action="<?= e($default['search_url'] ?? 'https://cn.bing.com/search') ?>" method="get" target="<?= e($openTarget) ?>"<?= $openTarget === '_blank' ? ' rel="noopener"' : '' ?>
          data-slug="<?= e($default['slug'] ?? '') ?>" data-keys="<?= e($suggestKeys) ?>">
      <input type="text" id="search-text" name="<?= e($default['param'] ?? 'q') ?>"
             placeholder="<?= e(($default['name'] ?? '搜索') . '搜索') ?>" autocomplete="off">
      <button class="submit" type="submit" aria-label="搜索">
        <svg viewBox="0 0 24 24" width="18" height="18" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" aria-hidden="true">
          <circle cx="11" cy="11" r="7"></circle>
          <path d="M20 20l-3.6-3.6"></path>
        </svg>
      </button>
      <ul id="word"></ul>
    </form>
  </div>

  <!-- 网格板块：常用 / 工具 ... -->
  <?php foreach ($gridGroups as $g): $items = sites_of((int)$g['id']); if (!$items) continue; ?>
    <ul class="mylist">
      <li class="title"><?= e($g['name']) ?></li>
      <?php foreach ($items as $s) { site_tile($s); } ?>
    </ul>
  <?php endforeach; ?>

  <!-- 合集：标签页折叠 或 全部平铺（后台「设置 → 合集显示方式」切换） -->
  <?php
  // 先收一遍「有内容的合集」，空合集不占位（标签页模式下也不会多出一个空标签）
  $collGroups = [];
  foreach ($tabGroups as $g) {
      $items = sites_of((int)$g['id']);
      if ($items) { $collGroups[] = ['g' => $g, 'items' => $items]; }
  }
  ?>
  <?php if ($collGroups): ?>
    <div class="collections<?= $collLayout === 'flat' ? ' flat' : '' ?>" data-layout="<?= e($collLayout) ?>">
      <div class="collections-title">合集</div>
      <?php if ($collLayout === 'flat'): ?>
        <?php foreach ($collGroups as $c): ?>
          <ul class="mylist">
            <li class="title"><?= e($c['g']['name']) ?></li>
            <?php foreach ($c['items'] as $s) { site_tile($s); } ?>
          </ul>
        <?php endforeach; ?>
      <?php else: ?>
        <div class="tabs" id="coll-tabs" role="tablist">
          <?php foreach ($collGroups as $i => $c): ?>
            <button type="button" class="tab<?= $i === 0 ? ' active' : '' ?>" role="tab"
                    aria-selected="<?= $i === 0 ? 'true' : 'false' ?>"
                    data-target="coll-<?= (int)$c['g']['id'] ?>"><?= e($c['g']['name']) ?></button>
          <?php endforeach; ?>
        </div>
        <div class="tab-panels">
          <?php foreach ($collGroups as $i => $c): ?>
            <ul class="mylist tab-panel<?= $i === 0 ? ' active' : '' ?>" id="coll-<?= (int)$c['g']['id'] ?>" role="tabpanel">
              <?php foreach ($c['items'] as $s) { site_tile($s); } ?>
            </ul>
          <?php endforeach; ?>
        </div>
      <?php endif; ?>
    </div>
  <?php endif; ?>

  <footer class="foot">
    <a href="<?= e(url('admin/')) ?>">管理</a>
    <span>·</span>
    <span><?= e(site_name()) ?></span>
  </footer>
</div>

<script>window.SIMPLENAV = { suggest: "<?= e(url('suggest.php')) ?>", suggestKeys: "<?= e($suggestKeys) ?>" };</script>
<script src="<?= e(asset('assets/js/app.js')) ?>"></script>
</body>
</html>