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1775 lines (1611 loc) · 68.4 KB
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
<title>阅读 - 我的书架</title>
<meta name="description" content="">
<!-- P3修复：DNS预解析和预连接 -->
<link rel="preconnect" href="https://github.com" crossorigin>
<link rel="dns-prefetch" href="https://github.com">
<link rel="stylesheet" href="/style.css">
<link rel="manifest" href="/manifest.json">
<meta name="theme-color" content="#d4a574">
</head>
<body>
<div class="progress-bar" id="progress-bar"></div>
<div class="navbar">
<h1><a href="/">📚 我的书架</a></h1>
<nav>
<a href="#" id="back-link">返回目录</a>
<span id="nav-user"></span>
</nav>
</div>
<div class="reader" id="reader-area">
<div class="breadcrumb" id="breadcrumb"></div>
<div id="content" class="loading">加载中...</div>
</div>
<!-- 底部工具栏 -->
<div class="reader-bottom-bar" id="bottom-bar">
<button class="bar-btn" id="bar-prev" title="上一章"><span class="bar-icon">◀</span>上一章</button>
<button class="bar-btn" id="bar-toc" title="目录"><span class="bar-icon">☰</span>目录</button>
<button class="bar-btn" id="bar-bookmark" title="书签"><span class="bar-icon" id="bookmark-icon">☆</span>书签</button>
<button class="bar-btn" id="bar-settings" title="设置"><span class="bar-icon">⚙</span>设置</button>
<button class="bar-btn" id="bar-immersive" title="沉浸模式"><span class="bar-icon">🔲</span>沉浸</button>
<button class="bar-btn" id="bar-next" title="下一章"><span class="bar-icon">▶</span>下一章</button>
</div>
<!-- 章节目录浮层 -->
<div class="toc-overlay" id="toc-overlay">
<div class="toc-panel">
<h3 id="toc-title">目录</h3>
<ul class="toc-list" id="toc-list"></ul>
</div>
</div>
<!-- 设置面板 -->
<div class="settings-overlay" id="settings-overlay">
<div class="settings-panel">
<h3>阅读设置<button class="close-btn" id="close-settings">✕</button></h3>
<div class="setting-row">
<span class="setting-label">主题</span>
<div class="theme-options" id="theme-options">
<div class="theme-dot" data-theme="light" title="默认"></div>
<div class="theme-dot" data-theme="dark" title="夜间"></div>
<div class="theme-dot" data-theme="green" title="护眼"></div>
<div class="theme-dot" data-theme="sepia" title="羊皮纸"></div>
<div class="theme-dot" data-theme="blue" title="淡蓝"></div>
</div>
</div>
<div class="setting-row">
<span class="setting-label">字体</span>
<div class="font-options" id="font-options">
<div class="font-option" data-font="'Georgia','Noto Serif SC','Source Han Serif CN',serif" style="font-family:Georgia,serif">宋体/衬线</div>
<div class="font-option" data-font="'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif" style="font-family:sans-serif">黑体/无衬线</div>
<div class="font-option" data-font="'KaiTi','STKaiti','AR PL UKai CN',serif" style="font-family:KaiTi,STKaiti,serif">楷体</div>
<div class="font-option" data-font="'FangSong','STFangsong',serif" style="font-family:FangSong,STFangsong,serif">仿宋</div>
</div>
</div>
<div class="setting-row">
<span class="setting-label">字号</span>
<div class="slider-row">
<span style="font-size:12px">A</span>
<input type="range" id="font-size-slider" min="14" max="28" step="1">
<span style="font-size:20px">A</span>
<span class="slider-val" id="font-size-val">17px</span>
</div>
</div>
<div class="setting-row">
<span class="setting-label">行距</span>
<div class="slider-row">
<span style="font-size:12px">紧</span>
<input type="range" id="line-height-slider" min="1.5" max="3" step="0.1">
<span style="font-size:12px">松</span>
<span class="slider-val" id="line-height-val">2.0</span>
</div>
</div>
<div class="setting-row">
<span class="setting-label">页面宽度</span>
<div class="slider-row">
<span style="font-size:12px">窄</span>
<input type="range" id="width-slider" min="500" max="960" step="20">
<span style="font-size:12px">宽</span>
<span class="slider-val" id="width-val">720px</span>
</div>
</div>
<div class="setting-row">
<span class="setting-label">阅读模式</span>
<div class="mode-options" id="mode-options">
<div class="mode-option" data-mode="scroll">📜 滚动</div>
<div class="mode-option" data-mode="pager">📖 翻页</div>
</div>
</div>
</div>
</div>
<button class="back-to-top has-bar" id="back-top" onclick="window.scrollTo({top:0,behavior:'smooth'})">↑</button>
<!-- 翻页模式：点击区域 + 页码 -->
<div class="pager-tap-left" id="pager-tap-left" style="display:none"></div>
<div class="pager-tap-right" id="pager-tap-right" style="display:none"></div>
<div class="pager-indicator" id="pager-indicator"></div>
<div class="immersive-hint" id="immersive-hint">点击中央或按 Esc 退出沉浸模式</div>
<!-- 批注：浮动按钮（PC+移动端统一） -->
<div id="anno-float-btn" class="anno-float-btn">📝</div>
<!-- 批注：输入框 -->
<div id="anno-editor" class="anno-editor" style="display:none">
<div class="anno-editor-quote" id="anno-quote"></div>
<div class="anno-input-wrap">
<textarea id="anno-input" maxlength="500" placeholder="写下你的批注..."></textarea>
<span class="anno-char-count"><span id="anno-char-num">0</span>/500</span>
</div>
<div class="anno-editor-footer">
<button id="anno-vis-btn" class="anno-vis-btn" type="button">🔒 仅自己可见</button>
<div class="anno-editor-actions">
<button class="btn btn-sm" id="anno-cancel" type="button">取消</button>
<button class="btn btn-sm anno-submit-btn" id="anno-submit" type="button">发表</button>
</div>
</div>
<div class="anno-editor-hint">Ctrl+Enter 发表 · Esc 取消</div>
</div>
<!-- 批注：查看弹窗 -->
<div id="anno-popover" class="anno-popover" style="display:none"></div>
<script>
// ===== 认证状态 =====
const authToken = ''; // token由HttpOnly Cookie自动携带
let currentUser = null; // { userId, username, role }
let canAnnotate = false; // 当前书籍是否可批注
let currentBookId = null;
let currentChapterId = null;
async function fetchCurrentUser() {
const navUser = document.getElementById('nav-user');
try {
const res = await fetch('/api/me', { credentials: 'same-origin' });
if (res.ok) {
currentUser = await res.json();
const roleMap = {
'super_admin': { label: '超管', cls: 'super' },
'admin': { label: '管理', cls: 'admin' },
'demo': { label: '用户', cls: 'demo' }
};
const r = roleMap[currentUser.role] || { label: '用户', cls: 'demo' };
navUser.innerHTML = `<a href="/admin.html"><span class="role-badge ${r.cls}">${r.label}</span> ${esc(currentUser.username || '')}</a> <a href="#" onclick="doLogout();return false" style="font-size:12px;color:#e74c3c;margin-left:6px">退出</a>`;
} else {
navUser.innerHTML = '<a href="/admin.html">管理</a>';
}
} catch {
navUser.innerHTML = '<a href="/admin.html">管理</a>';
}
}
async function doLogout() {
try { await fetch('/api/auth/logout', { method: 'POST', credentials: 'same-origin' }); } catch {}
currentUser = null;
location.reload();
}
function annoApi(method, path, body) {
const opts = { method, headers: {}, credentials: 'same-origin' };
if (body) {
opts.headers['Content-Type'] = 'application/json';
opts.body = JSON.stringify(body);
}
return fetch(path, opts);
}
// ===== 句子分割工具 =====
function splitSentences(text) {
if (!text || !text.trim()) return [];
// 匹配句子：非句末标点的字符 + 可选的句末标点（含省略号…和连续英文句号..）
// 🟡-4: 连续英文句号 .. / ... 视为省略号，不逐个断句
const raw = text.match(/[^。！？…!?\n]+(?:\.{2,}|[。！？…!?\n])?/g) || [text];
const merged = [];
let buf = '';
let depth = 0;
for (const seg of raw) {
buf += seg;
for (const ch of seg) {
if (ch === '\u201c' || ch === '\u300c' || ch === '\u300e') depth++;
if (ch === '\u201d' || ch === '\u300d' || ch === '\u300f') depth = Math.max(0, depth - 1);
}
if (depth === 0) {
const trimmed = buf.trim();
if (trimmed) merged.push(trimmed);
buf = '';
}
}
if (buf.trim()) merged.push(buf.trim());
return merged;
}
function snapToSentence(paragraphText, selStart, selEnd) {
const sentences = splitSentences(paragraphText);
let pos = 0;
for (let i = 0; i < sentences.length; i++) {
const s = sentences[i];
const sStart = paragraphText.indexOf(s, pos);
const sEnd = sStart + s.length;
if (selStart < sEnd && selEnd > sStart) {
return { text: s, sentIdx: i, start: sStart, end: sEnd };
}
pos = sEnd;
}
return null;
}
async function sentenceHash(text) {
const buf = await crypto.subtle.digest('SHA-256', new TextEncoder().encode(text));
return [...new Uint8Array(buf)].slice(0, 16).map(b => b.toString(16).padStart(2, '0')).join('');
}
function annotationOpacity(count) {
if (count <= 0) return 0;
// 1人=0.3, 3人≈0.5, 10人≈0.75, 20人≈0.9（🟢-2: 改为20条达到最大浓度）
const min = 0.3, max = 0.9;
return Math.min(max, min + (max - min) * (Math.log10(count) / Math.log10(20)));
}
// ===== 阅读设置初始化 =====
let immersiveActive = false; // 沉浸模式状态（提前声明供其他handler使用）
const THEMES = ['light','dark','green','sepia','blue'];
const FONTS = [
"'Georgia','Noto Serif SC','Source Han Serif CN',serif",
"'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif",
"'KaiTi','STKaiti','AR PL UKai CN',serif",
"'FangSong','STFangsong',serif"
];
function loadSettings() {
let readingMode = 'scroll';
try { readingMode = localStorage.getItem('reading-mode') || 'scroll'; } catch {}
return {
theme: localStorage.getItem('theme') || 'light',
fontSize: parseInt(localStorage.getItem('font-size')) || 17,
lineHeight: parseFloat(localStorage.getItem('line-height')) || 2,
fontFamily: localStorage.getItem('font-family') || FONTS[0],
readingWidth: parseInt(localStorage.getItem('reading-width')) || 720,
readingMode: readingMode
};
}
let settings = loadSettings();
// ===== 翻页模式变量（需在 applyAllSettings 之前声明）=====
let pagerState = { currentPage: 0, totalPages: 1, columnWidth: 0 };
const pagerTapLeft = document.getElementById('pager-tap-left');
const pagerTapRight = document.getElementById('pager-tap-right');
const pagerIndicator = document.getElementById('pager-indicator');
applyAllSettings();
function applyAllSettings() {
const root = document.documentElement;
root.setAttribute('data-theme', settings.theme);
root.style.setProperty('--font-size', settings.fontSize + 'px');
root.style.setProperty('--line-height', settings.lineHeight);
root.style.setProperty('--letter-spacing', '0.02em');
root.style.setProperty('--font-family', settings.fontFamily);
root.style.setProperty('--reading-width', settings.readingWidth + 'px');
applyReadingMode();
}
function saveSetting(key, val) {
localStorage.setItem(key, val);
}
// ===== 设置面板交互 =====
const settingsOverlay = document.getElementById('settings-overlay');
const tocOverlay = document.getElementById('toc-overlay');
// 主题选择
document.getElementById('theme-options').addEventListener('click', (e) => {
const dot = e.target.closest('.theme-dot');
if (!dot) return;
settings.theme = dot.dataset.theme;
saveSetting('theme', settings.theme);
applyAllSettings();
updateSettingsUI();
});
// 字体选择
document.getElementById('font-options').addEventListener('click', (e) => {
const opt = e.target.closest('.font-option');
if (!opt) return;
settings.fontFamily = opt.dataset.font;
saveSetting('font-family', settings.fontFamily);
applyAllSettings();
updateSettingsUI();
// 字体变化后需要等渲染再重新分页
if (settings.readingMode === 'pager') {
requestAnimationFrame(() => { requestAnimationFrame(() => { pagerRecalc(); }); });
}
});
// 防抖工具函数（翻页模式滑块用）
let _pagerDebounceTimer = null;
function debouncedPagerRecalc() {
if (_pagerDebounceTimer) clearTimeout(_pagerDebounceTimer);
_pagerDebounceTimer = setTimeout(pagerRecalc, 100);
}
// 字号滑块
document.getElementById('font-size-slider').addEventListener('input', (e) => {
settings.fontSize = parseInt(e.target.value);
saveSetting('font-size', settings.fontSize);
document.getElementById('font-size-val').textContent = settings.fontSize + 'px';
applyAllSettings();
if (settings.readingMode === 'pager') debouncedPagerRecalc();
});
// 行距滑块
document.getElementById('line-height-slider').addEventListener('input', (e) => {
settings.lineHeight = parseFloat(e.target.value);
saveSetting('line-height', settings.lineHeight);
document.getElementById('line-height-val').textContent = settings.lineHeight.toFixed(1);
applyAllSettings();
if (settings.readingMode === 'pager') debouncedPagerRecalc();
});
// 页面宽度滑块
document.getElementById('width-slider').addEventListener('input', (e) => {
settings.readingWidth = parseInt(e.target.value);
saveSetting('reading-width', settings.readingWidth);
document.getElementById('width-val').textContent = settings.readingWidth + 'px';
applyAllSettings();
if (settings.readingMode === 'pager') debouncedPagerRecalc();
});
// 阅读模式切换
document.getElementById('mode-options').addEventListener('click', (e) => {
const opt = e.target.closest('.mode-option');
if (!opt) return;
const newMode = opt.dataset.mode;
if (newMode === settings.readingMode) return;
settings.readingMode = newMode;
saveSetting('reading-mode', newMode);
applyAllSettings();
updateSettingsUI();
});
function updateSettingsUI() {
document.querySelectorAll('.theme-dot').forEach(d => {
d.classList.toggle('active', d.dataset.theme === settings.theme);
});
document.querySelectorAll('.font-option').forEach(o => {
o.classList.toggle('active', o.dataset.font === settings.fontFamily);
});
document.getElementById('font-size-slider').value = settings.fontSize;
document.getElementById('font-size-val').textContent = settings.fontSize + 'px';
document.getElementById('line-height-slider').value = settings.lineHeight;
document.getElementById('line-height-val').textContent = settings.lineHeight.toFixed(1);
document.getElementById('width-slider').value = settings.readingWidth;
document.getElementById('width-val').textContent = settings.readingWidth + 'px';
document.querySelectorAll('.mode-option').forEach(o => {
o.classList.toggle('active', o.dataset.mode === settings.readingMode);
});
}
// 打开/关闭设置
document.getElementById('bar-settings').addEventListener('click', () => {
updateSettingsUI();
settingsOverlay.classList.add('active');
});
document.getElementById('close-settings').addEventListener('click', () => {
settingsOverlay.classList.remove('active');
});
settingsOverlay.addEventListener('click', (e) => {
if (e.target === settingsOverlay) settingsOverlay.classList.remove('active');
});
// 打开/关闭目录
document.getElementById('bar-toc').addEventListener('click', () => {
tocOverlay.classList.add('active');
// 滚动到当前章节
const cur = document.querySelector('.toc-list a.current');
if (cur) cur.scrollIntoView({ block: 'center' });
});
tocOverlay.addEventListener('click', (e) => {
if (e.target === tocOverlay) tocOverlay.classList.remove('active');
});
// ===== 翻页模式引擎 =====
function applyReadingMode() {
const isPager = settings.readingMode === 'pager';
document.body.classList.toggle('pager-mode', isPager);
pagerTapLeft.style.display = isPager ? 'block' : 'none';
pagerTapRight.style.display = isPager ? 'block' : 'none';
if (isPager) {
pagerRecalc();
} else {
// 切回滚动模式：清除column样式和transform
const content = document.querySelector('.reader-content');
if (content) {
// 记住当前阅读比例
const ratio = pagerState.totalPages > 1 ? pagerState.currentPage / (pagerState.totalPages - 1) : 0;
content.style.transition = 'none';
content.style.transform = '';
content.style.height = '';
content.style.columnWidth = '';
content.style.columnGap = '';
content.offsetHeight; // force reflow
content.style.transition = '';
// 恢复滚动位置
if (ratio > 0) {
requestAnimationFrame(() => {
const h = document.documentElement.scrollHeight - window.innerHeight;
if (h > 0) window.scrollTo(0, h * ratio);
});
}
}
pagerIndicator.style.display = 'none';
}
}
function pagerRecalc() {
if (settings.readingMode !== 'pager') return;
const content = document.querySelector('.reader-content');
if (!content) return;
// 保存当前阅读比例
const oldRatio = pagerState.totalPages > 1 ? pagerState.currentPage / (pagerState.totalPages - 1) : 0;
// 获取容器可用高度
const reader = document.getElementById('reader-area');
const readerRect = reader.getBoundingClientRect();
const titleEl = reader.querySelector('h2');
const titleH = titleEl ? titleEl.offsetHeight + 16 : 0;
const availH = readerRect.height - titleH;
if (availH <= 0) return;
const colW = readerRect.width;
pagerState.columnWidth = colW;
// 批量设置样式，只触发一次 reflow
content.style.transition = 'none';
content.style.transform = 'translateX(0)';
content.style.height = availH + 'px';
content.style.columnWidth = colW + 'px';
content.style.columnGap = colW + 'px';
// 单次强制 reflow 获取 scrollWidth
const scrollW = content.scrollWidth;
// 优化页码计算：使用更精确的公式
// 每页宽度 = columnWidth + columnGap = colW * 2
const pageWidth = colW * 2;
if (scrollW <= colW) {
pagerState.totalPages = 1;
} else {
// 使用 ceil 向上取整，确保最后一页也能显示
pagerState.totalPages = Math.ceil(scrollW / pageWidth);
}
pagerState.totalPages = Math.max(1, pagerState.totalPages);
// 恢复到相近的页码
if (pagerState.totalPages > 1) {
pagerState.currentPage = Math.min(Math.round(oldRatio * (pagerState.totalPages - 1)), pagerState.totalPages - 1);
} else {
pagerState.currentPage = 0;
}
pagerState.currentPage = Math.max(0, pagerState.currentPage);
pagerGoTo(pagerState.currentPage, false);
}
function pagerGoTo(page, animate) {
const content = document.querySelector('.reader-content');
if (!content) return;
page = Math.max(0, Math.min(page, pagerState.totalPages - 1));
pagerState.currentPage = page;
const offset = page * pagerState.columnWidth * 2;
if (animate === false) {
content.style.transition = 'none';
} else {
content.style.transition = 'transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94)';
}
content.style.transform = 'translateX(-' + offset + 'px)';
if (animate === false) {
// force reflow then restore transition
content.offsetHeight;
content.style.transition = '';
}
pagerUpdateIndicator();
// 保存进度（用页码比例模拟scrollPct）
if (window._chapterMeta) {
const m = window._chapterMeta;
const pct = pagerState.totalPages > 1 ? page / (pagerState.totalPages - 1) : 0;
try {
const progress = {
chapterId: m.chapterId, chapterTitle: m.chapterTitle,
bookTitle: m.bookTitle, bookId: m.bookId,
scrollPct: pct, time: Date.now()
};
localStorage.setItem('reading_' + m.bookId, JSON.stringify(progress));
} catch {}
}
}
function pagerUpdateIndicator() {
pagerIndicator.textContent = (pagerState.currentPage + 1) + ' / ' + pagerState.totalPages;
}
function pagerNext() {
if (pagerState.currentPage < pagerState.totalPages - 1) {
pagerGoTo(pagerState.currentPage + 1, true);
} else if (nextUrl) {
location.href = nextUrl;
}
}
function pagerPrev() {
if (pagerState.currentPage > 0) {
pagerGoTo(pagerState.currentPage - 1, true);
} else if (prevUrl) {
location.href = prevUrl;
}
}
// 翻页点击区域（有选区时不翻页，让批注交互优先）
pagerTapLeft.addEventListener('click', (e) => {
const sel = window.getSelection();
if (sel && !sel.isCollapsed) return; // 有选区时不翻页
e.stopPropagation(); pagerPrev();
});
pagerTapRight.addEventListener('click', (e) => {
const sel = window.getSelection();
if (sel && !sel.isCollapsed) return;
e.stopPropagation(); pagerNext();
});
// 触摸滑动翻页
let touchStartX = 0, touchStartY = 0, touchStartTime = 0;
document.addEventListener('touchstart', (e) => {
if (settings.readingMode !== 'pager') return;
if (e.target.closest('.settings-panel') || e.target.closest('.toc-panel') || e.target.closest('.reader-bottom-bar')) return;
touchStartX = e.touches[0].clientX;
touchStartY = e.touches[0].clientY;
touchStartTime = Date.now();
}, { passive: true });
document.addEventListener('touchend', (e) => {
if (settings.readingMode !== 'pager') return;
if (e.target.closest('.settings-panel') || e.target.closest('.toc-panel') || e.target.closest('.reader-bottom-bar')) return;
const dx = e.changedTouches[0].clientX - touchStartX;
const dy = e.changedTouches[0].clientY - touchStartY;
const dt = Date.now() - touchStartTime;
// 水平滑动距离>50px，且水平>垂直，且时间<500ms
if (Math.abs(dx) > 50 && Math.abs(dx) > Math.abs(dy) && dt < 500) {
if (dx < 0) pagerNext();
else pagerPrev();
}
}, { passive: true });
// resize时重新计算
let resizeTimer = null;
window.addEventListener('resize', () => {
if (settings.readingMode !== 'pager') return;
if (resizeTimer) clearTimeout(resizeTimer);
resizeTimer = setTimeout(pagerRecalc, 200);
});
// ===== 底部工具栏显示/隐藏 =====
const bottomBar = document.getElementById('bottom-bar');
let barVisible = true;
bottomBar.classList.add('visible');
document.getElementById('reader-area').addEventListener('click', (e) => {
if (immersiveActive) return; // 沉浸模式下由专门的handler处理
if (e.target.closest('a') || e.target.closest('button') || e.target.closest('.reader-nav')) return;
// 翻页模式下，中间区域点击切换工具栏（左右区域由tap zone处理）
if (settings.readingMode === 'pager') {
const x = e.clientX;
const w = window.innerWidth;
if (x < w * 0.35 || x > w * 0.65) return; // 左右区域不处理
}
barVisible = !barVisible;
bottomBar.classList.toggle('visible', barVisible);
});
// ===== 进度条 + 滚动位置记忆 =====
// P2修复：优化进度保存频率，使用节流而非防抖
// 节流确保定期保存，防抖可能导致长时间不保存
let scrollSaveTimer = null;
let lastSaveTime = 0;
const SCROLL_SAVE_INTERVAL = 2000; // 节流间隔：2秒保存一次，平衡性能和体验
window.addEventListener('scroll', () => {
if (settings.readingMode === 'pager') return;
const h = document.documentElement.scrollHeight - window.innerHeight;
const pct = h > 0 ? (window.scrollY / h * 100) : 0;
document.getElementById('progress-bar').style.width = pct + '%';
document.getElementById('back-top').classList.toggle('visible', window.scrollY > 400);
// 节流保存滚动位置：确保每2秒最多保存一次
const now = Date.now();
if (now - lastSaveTime >= SCROLL_SAVE_INTERVAL) {
// 立即保存并更新时间戳
saveScrollPosition();
lastSaveTime = now;
} else {
// 在节流间隔内，设置定时器确保最终会保存
if (scrollSaveTimer) clearTimeout(scrollSaveTimer);
scrollSaveTimer = setTimeout(() => {
saveScrollPosition();
lastSaveTime = Date.now();
}, SCROLL_SAVE_INTERVAL - (now - lastSaveTime));
}
});
function saveScrollPosition() {
if (!window._chapterMeta) return;
if (settings.readingMode === 'pager') return; // pager模式在pagerGoTo中保存
const m = window._chapterMeta;
const h = document.documentElement.scrollHeight - window.innerHeight;
const pct = h > 0 ? (window.scrollY / h) : 0;
const progress = {
chapterId: m.chapterId, chapterTitle: m.chapterTitle,
bookTitle: m.bookTitle, bookId: m.bookId,
scrollPct: pct, time: Date.now()
};
localStorage.setItem(`reading_${m.bookId}`, JSON.stringify(progress));
}
// ===== 键盘快捷键 =====
let prevUrl = null, nextUrl = null, backUrl = null;
document.addEventListener('keydown', (e) => {
if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
if (e.key === 'ArrowLeft') {
if (settings.readingMode === 'pager') pagerPrev();
else if (prevUrl) location.href = prevUrl;
return;
}
if (e.key === 'ArrowRight') {
if (settings.readingMode === 'pager') pagerNext();
else if (nextUrl) location.href = nextUrl;
return;
}
if (e.key === 'Escape') {
if (immersiveActive) { exitImmersive(); return; }
if (document.fullscreenElement) { document.exitFullscreen(); return; }
if (settingsOverlay.classList.contains('active')) settingsOverlay.classList.remove('active');
else if (tocOverlay.classList.contains('active')) tocOverlay.classList.remove('active');
else if (backUrl) location.href = backUrl;
}
if (e.key === 'i' || e.key === 'I') {
toggleImmersive();
return;
}
if (e.key === 't' || e.key === 'T') {
const idx = THEMES.indexOf(settings.theme);
settings.theme = THEMES[(idx + 1) % THEMES.length];
saveSetting('theme', settings.theme);
applyAllSettings(); updateSettingsUI();
}
if (e.key === 'f' || e.key === 'F') {
if (document.fullscreenElement) document.exitFullscreen();
else document.documentElement.requestFullscreen().catch(() => {});
}
if (e.key === 's' || e.key === 'S') {
settingsOverlay.classList.toggle('active');
}
});
// ===== 加载站点设置 =====
fetch('/api/settings').then(r => r.json()).then(d => {
const s = d.settings || {};
if (s.site_name) document.querySelector('.navbar h1 a').textContent = '📚 ' + s.site_name;
}).catch(() => {});
// ===== 加载自定义字体 =====
fetch('/api/fonts').then(r => r.json()).then(d => {
const fonts = d.fonts || [];
const container = document.getElementById('font-options');
fonts.forEach(name => {
const familyName = 'Custom-' + name.replace(/\.woff2$/i, '');
const face = new FontFace(familyName, `url(/api/fonts/${encodeURIComponent(name)})`);
face.load().then(loaded => {
document.fonts.add(loaded);
const div = document.createElement('div');
div.className = 'font-option';
div.dataset.font = `'${familyName}'`;
div.style.fontFamily = familyName;
div.textContent = name.replace(/\.woff2$/i, '');
container.appendChild(div);
// 如果当前选中的就是这个字体，标记active
if (settings.fontFamily === `'${familyName}'`) div.classList.add('active');
}).catch(() => {}); // 加载失败静默忽略
});
}).catch(() => {});
// ===== 预加载缓存 =====
let prefetchedNext = null;
// ===== 加载章节 =====
const chapterId = new URLSearchParams(location.search).get('id');
if (!chapterId || !/^\d+$/.test(chapterId)) {
document.getElementById('content').innerHTML = '<div class="msg msg-error">无效的章节ID</div>';
} else {
loadChapter();
}
async function loadChapter() {
const el = document.getElementById('content');
try {
// 检查是否有预加载缓存
let data;
if (prefetchedNext && prefetchedNext.chapter && String(prefetchedNext.chapter.id) === chapterId) {
data = prefetchedNext;
prefetchedNext = null;
} else {
const res = await fetch(`/api/chapters/${chapterId}`);
if (!res.ok) throw new Error(res.status === 404 ? '章节不存在' : '加载失败');
data = await res.json();
}
const c = data.chapter;
// 存储元数据
window._chapterMeta = {
chapterId: c.id, chapterTitle: c.title,
bookTitle: c.book_title, bookId: c.book_id
};
window._chapterData = { content: data.content, title: c.title };
// SEO
document.title = esc(c.title) + ' - ' + esc(c.book_title);
const metaDesc = document.querySelector('meta[name="description"]');
if (metaDesc) metaDesc.content = `${c.book_title} - ${c.title}`;
// 面包屑
backUrl = `/book.html?id=${c.book_id}`;
document.getElementById('back-link').href = backUrl;
document.getElementById('breadcrumb').innerHTML =
`<a href="/">书架</a><span>›</span><a href="/book.html?id=${c.book_id}">${esc(c.book_title)}</a><span>›</span>${esc(c.title)}`;
// 正文 — 按段落渲染为 <p>（批注系统依赖段落索引）
const contentDiv = document.createElement('div');
contentDiv.className = 'reader-content';
const rawParagraphs = data.content.split('\n');
rawParagraphs.forEach((text, idx) => {
if (!text.trim()) return; // 跳过空行，但保留原始索引
const p = document.createElement('p');
p.textContent = text;
p.dataset.paraIdx = idx;
contentDiv.appendChild(p);
});
currentBookId = c.book_id;
currentChapterId = c.id;
// 导航
prevUrl = data.prevChapter ? `/read.html?id=${data.prevChapter.id}` : null;
nextUrl = data.nextChapter ? `/read.html?id=${data.nextChapter.id}` : null;
const nav = document.createElement('div');
nav.className = 'reader-nav';
nav.innerHTML = `
${prevUrl ? `<a href="${prevUrl}">← ${esc(data.prevChapter.title)}</a>` : '<span class="disabled">已是第一章</span>'}
<a href="/book.html?id=${c.book_id}">目录</a>
<a href="#" id="export-btn" style="font-size:13px">导出TXT</a>
<a href="#" id="download-book-btn" style="font-size:13px">📥 缓存全书</a>
${nextUrl ? `<a href="${nextUrl}">${esc(data.nextChapter.title)} →</a>` : '<span class="disabled">已是最新章</span>'}
`;
el.innerHTML = `<h2>${esc(c.title)}</h2>`;
el.appendChild(contentDiv);
el.appendChild(nav);
// 导出按钮事件
document.getElementById('export-btn').addEventListener('click', (e) => { e.preventDefault(); exportThis(); });
// 缓存全书按钮
document.getElementById('download-book-btn').addEventListener('click', async (e) => {
e.preventDefault();
const btn = e.target;
try {
btn.textContent = '📥 获取目录...';
const bRes = await fetch(`/api/books/${c.book_id}`);
const bData = await bRes.json();
const chs = bData.chapters || [];
if (chs.length === 0) { btn.textContent = '📥 无章节'; return; }
let done = 0;
for (const ch of chs) {
await fetch(`/api/chapters/${ch.id}`);
done++;
btn.textContent = `📥 ${done}/${chs.length}`;
}
btn.textContent = '✅ 缓存完成';
} catch (err) {
btn.textContent = '❌ 缓存失败';
}
});
// 底部工具栏按钮
document.getElementById('bar-prev').onclick = () => { if (prevUrl) location.href = prevUrl; };
document.getElementById('bar-next').onclick = () => { if (nextUrl) location.href = nextUrl; };
document.getElementById('bar-prev').style.opacity = prevUrl ? '1' : '0.3';
document.getElementById('bar-next').style.opacity = nextUrl ? '1' : '0.3';
// 保存阅读进度
saveScrollPosition();
// 阅读统计：记录章节字数和阅读天数
trackReadingStats(c.id, data.content.length);
// 更新书签图标
updateBookmarkIcon();
// 恢复滚动位置
restoreScrollPosition(c.book_id, c.id);
// 加载目录
loadTOC(c.book_id, c.id);
// 预加载下一章
if (data.nextChapter) {
setTimeout(() => {
fetch(`/api/chapters/${data.nextChapter.id}`)
.then(r => r.json())
.then(d => { prefetchedNext = d; })
.catch(() => {});
}, 2000);
}
// 初始化批注系统
initAnnotations();
} catch (e) {
el.innerHTML = `<div class="msg msg-error">${esc(e.message)}</div>`;
}
}
function restoreScrollPosition(bookId, currentChapterId) {
try {
const saved = JSON.parse(localStorage.getItem(`reading_${bookId}`));
if (saved && saved.chapterId === currentChapterId && saved.scrollPct > 0) {
if (settings.readingMode === 'pager') {
// 翻页模式：延迟到分页计算后恢复
requestAnimationFrame(() => {
requestAnimationFrame(() => {
pagerRecalc();
const page = Math.round(saved.scrollPct * (pagerState.totalPages - 1));
pagerGoTo(page, false);
});
});
} else {
// 滚动模式：恢复滚动位置
requestAnimationFrame(() => {
const h = document.documentElement.scrollHeight - window.innerHeight;
if (h > 0) window.scrollTo(0, h * saved.scrollPct);
});
}
} else if (settings.readingMode === 'pager') {
// 没有保存的位置，但需要初始化分页
requestAnimationFrame(() => {
requestAnimationFrame(() => { pagerRecalc(); });
});
}
} catch {
if (settings.readingMode === 'pager') {
requestAnimationFrame(() => {
requestAnimationFrame(() => { pagerRecalc(); });
});
}
}
}
async function loadTOC(bookId, currentChapterId) {
try {
const res = await fetch(`/api/books/${bookId}`);
const data = await res.json();
const list = document.getElementById('toc-list');
document.getElementById('toc-title').textContent = data.book.title;
list.innerHTML = (data.chapters || []).map(ch =>
`<li><a href="/read.html?id=${ch.id}" class="${ch.id === currentChapterId ? 'current' : ''}">${esc(ch.title)}</a></li>`
).join('');
} catch {}
}
function esc(s) {
const d = document.createElement('div');
d.textContent = s || '';
return d.innerHTML;
}
function exportThis() {
if (!window._chapterData) return;
const BOM = '\uFEFF';
const blob = new Blob([BOM + window._chapterData.content], {type:'text/plain;charset=utf-8'});
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = (window._chapterData.title + '.txt').replace(/[<>:"/\\|?*]/g, '_');
a.click();
URL.revokeObjectURL(url);
}
// ===== 书签功能 =====
function getBookmarks(bookId) {
try { return JSON.parse(localStorage.getItem(`bookmarks_${bookId}`)) || []; }
catch { return []; }
}
function saveBookmarks(bookId, bookmarks) {
localStorage.setItem(`bookmarks_${bookId}`, JSON.stringify(bookmarks));
}
function isBookmarked() {
if (!window._chapterMeta) return false;
const m = window._chapterMeta;
const bms = getBookmarks(m.bookId);
return bms.some(b => b.chapterId === m.chapterId);
}
function updateBookmarkIcon() {
document.getElementById('bookmark-icon').textContent = isBookmarked() ? '★' : '☆';
}
function toggleBookmark() {
if (!window._chapterMeta) return;
const m = window._chapterMeta;
let bms = getBookmarks(m.bookId);
const idx = bms.findIndex(b => b.chapterId === m.chapterId);
if (idx >= 0) {
bms.splice(idx, 1);
} else {
const h = document.documentElement.scrollHeight - window.innerHeight;
const pct = h > 0 ? (window.scrollY / h) : 0;
bms.push({
chapterId: m.chapterId, chapterTitle: m.chapterTitle,
scrollPct: pct, time: Date.now()
});
}
saveBookmarks(m.bookId, bms);
updateBookmarkIcon();
}
document.getElementById('bar-bookmark').addEventListener('click', toggleBookmark);
// ===== 阅读统计 =====
function getReadingStats() {
try { return JSON.parse(localStorage.getItem('readingStats')) || {}; } catch { return {}; }
}
function saveReadingStats(s) {
localStorage.setItem('readingStats', JSON.stringify(s));
}
function trackReadingStats(chId, charCount) {
const s = getReadingStats();
if (!s.totalSeconds) s.totalSeconds = 0;
if (!s.totalChars) s.totalChars = 0;
if (!Array.isArray(s.readChapterIds)) s.readChapterIds = [];
if (!Array.isArray(s.days)) s.days = [];
// 记录今天
const today = new Date().toISOString().slice(0, 10);
if (!s.days.includes(today)) s.days.push(today);
// 首次阅读该章节才累加字数
if (!s.readChapterIds.includes(chId)) {
s.readChapterIds.push(chId);
s.totalChars += charCount;
}
s.lastActiveDate = today;
saveReadingStats(s);
}
// 每30秒累加阅读时长
// 保存定时器引用，以便页面离开时清理
let readingStatsTimer = null;
readingStatsTimer = setInterval(() => {
if (document.hidden) return;
const s = getReadingStats();
s.totalSeconds = (s.totalSeconds || 0) + 30;
saveReadingStats(s);
}, 30000);
// 页面离开时清理定时器，防止内存泄漏
function cleanupReadingStats() {
if (readingStatsTimer) {
clearInterval(readingStatsTimer);
readingStatsTimer = null;
}
}
// 使用 pagehide 事件（比 beforeunload 更可靠）
window.addEventListener('pagehide', cleanupReadingStats);
// 同时监听 beforeunload 作为后备
window.addEventListener('beforeunload', cleanupReadingStats);
// ===== 沉浸模式 =====
const immersiveHint = document.getElementById('immersive-hint');
function toggleImmersive() {
immersiveActive = !immersiveActive;
document.body.classList.toggle('immersive', immersiveActive);
if (immersiveActive) {
document.documentElement.requestFullscreen().catch(() => {});
// 显示退出提示
immersiveHint.classList.add('show');
setTimeout(() => immersiveHint.classList.remove('show'), 2000);
} else {