108 lines
4.5 KiB
PHP
108 lines
4.5 KiB
PHP
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<?php
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/**
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* 在线阅读（v24 第 14 批 用户第 5 条：「可以点开图书进行查看、阅读」）。
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*
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* 两种读法，按文件类型分：
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* · 解析出正文的（EPUB / TXT）→ 直接把这一章的文本铺在这里（目录在侧栏）；
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* · PDF（服务端不提取正文）→ 用浏览器自带的 PDF 阅读器内嵌看，排版不会丢。
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*
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* ⚠️ 翻章就顺手**记进度**（读到第几章）：下次点"继续读"直接回到这里。
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* 这件事必须自动做 —— 让人手动记"我读到第几章"的阅读器没人会用。
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*
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* @param array $b 书
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* @param array $chapters 目录
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* @param array|null $chapter 当前章（含正文）
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* @param int $seq 当前章号
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*/
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$canWrite = \App\Auth::canWrite();
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$seq = (int)($seq ?? 1);
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$total = count($chapters);
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$isPdf = \App\BookParser::inlinable($b['file_format'] ?? '');
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$prev = $seq > 1 ? $seq - 1 : 0;
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$next = $seq < $total ? $seq + 1 : 0;
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?>
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<div class="page-head">
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<h1><?= e((string)$b['title']) ?></h1>
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<span class="sub">
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<?= $isPdf ? 'PDF · 浏览器内嵌阅读'
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: ('第 ' . $seq . ' / ' . max(1, $total) . ' 章'
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. ($chapter ? ' · ' . e((string)$chapter['title']) : '')) ?>
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</span>
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<div class="actions">
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<?php if ($canWrite): ?>
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<?php /* 最后一章读完 → 顺手就能标完（这一步做掉了，人才会真的点） */ ?>
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<form method="post" action="<?= e(url('books/status')) ?>" class="res-inline">
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<?= csrf_field() ?>
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<input type="hidden" name="id" value="<?= (int)$b['id'] ?>">
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<input type="hidden" name="status" value="done">
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<button class="btn<?= (string)$b['status'] === 'done' ? ' btn-ghost' : '' ?>" type="submit">
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<?= (string)$b['status'] === 'done' ? '已读完（点这退回在读）' : '读完了' ?>
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</button>
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</form>
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<?php endif; ?>
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<a class="btn btn-ghost" href="<?= e(url('books/show', ['id' => (int)$b['id']])) ?>">这本书</a>
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<a class="btn btn-ghost" href="<?= e(url('books')) ?>">书架</a>
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<?php $bkSetCurrent = 'read'; require __DIR__ . '/_settings_menu.php'; ?>
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</div>
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</div>
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<div class="book-read">
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<?php if (!$isPdf && $total > 0): ?>
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<aside class="br-side">
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<div class="br-side-h">目录</div>
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<ol class="br-toc">
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<?php foreach ($chapters as $c): ?>
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<li<?= (int)$c['seq'] === $seq ? ' class="is-cur"' : '' ?>>
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<a href="<?= e(url('books/read', ['id' => (int)$b['id'], 'seq' => (int)$c['seq']])) ?>">
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<?= e((string)$c['title']) ?>
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</a>
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</li>
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<?php endforeach; ?>
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</ol>
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</aside>
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<?php endif; ?>
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<div class="br-main">
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<?php if ($isPdf): ?>
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<?php /* PDF：交给浏览器自己的阅读器。object 比 iframe 兼容性更好，
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里面那句提示是"浏览器不支持内嵌"时才显示的兜底。 */ ?>
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<div class="br-pdf">
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<object data="<?= e(media_url((string)$b['file_key'])) ?>" type="application/pdf">
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<p class="empty-hint">
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这个浏览器不能直接内嵌看 PDF。
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<a href="<?= e(media_url((string)$b['file_key'], ['dl' => 1])) ?>">点这里下载</a>后再看。
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</p>
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</object>
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</div>
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<?php elseif (!$chapter): ?>
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<p class="empty-hint">
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这本书还没有解析出正文。<?php if ($canWrite): ?>
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到「编辑」里重新上传一次文件（EPUB / TXT 会自动拆章）。<?php endif; ?>
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</p>
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<?php else: ?>
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<article class="br-text">
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<h2 class="br-ch-title"><?= e((string)$chapter['title']) ?></h2>
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<?php /* ⚠️ 正文是**纯文本**：nl2br + 转义，绝不 innerHTML ——
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书的内容来自用户上传的文件，当成不可信输入处理。 */ ?>
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<div class="br-body"><?= nl2br(e((string)$chapter['content'])) ?></div>
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</article>
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<div class="br-nav">
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<?php if ($prev > 0): ?>
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<a class="btn btn-ghost" href="<?= e(url('books/read', ['id' => (int)$b['id'], 'seq' => $prev])) ?>">
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← 上一章
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</a>
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<?php endif; ?>
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<span class="br-pos small muted"><?= $seq ?> / <?= $total ?></span>
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<?php if ($next > 0): ?>
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<a class="btn" href="<?= e(url('books/read', ['id' => (int)$b['id'], 'seq' => $next])) ?>">
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下一章 →
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</a>
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<?php else: ?>
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<span class="small muted">已经是最后一章了</span>
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<?php endif; ?>
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</div>
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<?php endif; ?>
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</div>
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</div>
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