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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" />
<title>经济学人智能阅读助手</title>
<style>
:root{
--bg:#efe9dd; /* 整体暖底 */
--panel:#f7f3ea; /* 侧栏 */
--read:#fbf8f1; /* 阅读区，米色护眼 */
--surface:#f8f4ec; /* 卡片面板 */
--ink:#33302a; /* 正文深棕灰，非纯黑 */
--ink-soft:#56524a;
--muted:#938c7e;
--line:#e3dccd;
--accent:#9c1b14; /* 略沉的经济学人红 */
--accent-soft:#f0e3df;
--mark-w:#f7e6a6; --mark-w-b:#d6a800;
--mark-s:#cfe2f4; --mark-s-b:#3f86c9;
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{margin:0; background:var(--bg); color:var(--ink);
font-family:"Iowan Old Style",Georgia,"Songti SC",serif; font-size:16px;}
button{font-family:inherit; cursor:pointer; border:none; border-radius:7px; font-size:13px; padding:7px 13px; transition:.15s;}
button:disabled{opacity:.45; cursor:default;}
.primary{background:var(--accent); color:#fff;}
.primary:hover:not(:disabled){background:#811611;}
.ghost{background:#e8e1d3; color:#4a463e;}
.ghost:hover:not(:disabled){background:#ded6c6;}
.muted{color:var(--muted); font-size:12.5px;}
input[type=text],input[type=password]{font-family:inherit; padding:7px 10px; border:1px solid var(--line); border-radius:7px; font-size:13px; background:#fff;}
/* 顶栏 */
header{display:flex; align-items:center; gap:16px; padding:11px 20px;
background:var(--read); border-bottom:1px solid var(--line);}
.brand{font-weight:700; font-size:16px; color:var(--accent); letter-spacing:.3px;}
.brand small{font-weight:400; color:var(--muted); font-size:12px; margin-left:6px;}
header .sp{flex:1;}
.prog{display:none; align-items:center; gap:10px; min-width:240px;}
.bar-track{flex:1; height:8px; background:#e0d8c7; border-radius:5px; overflow:hidden;}
.bar-fill{height:100%; width:0; background:var(--accent); transition:width .15s;}
#barLabel{font-size:12px; color:var(--muted); white-space:nowrap;}
.keybox{position:relative;}
.keypanel{display:none; position:absolute; right:0; top:34px; background:#fff; border:1px solid var(--line);
border-radius:9px; padding:14px; width:392px; max-height:80vh; overflow-y:auto; box-shadow:0 8px 26px rgba(0,0,0,.12); z-index:30;}
.keypanel.open{display:block;}
.fld{display:block; font-size:11px; color:var(--muted); margin:9px 0 3px;}
.keypanel input, .keypanel select{width:100%; font-family:inherit; padding:7px 9px; border:1px solid var(--line);
border-radius:7px; font-size:13px; background:#fff;}
/* ===== NotebookLM 风格：卡片式三栏 + 可拖拽调宽 + 可折叠 ===== */
.app{display:flex; gap:10px; padding:10px; height:calc(100vh - 56px); align-items:stretch;}
.panel{background:var(--surface); border:1px solid var(--line); border-radius:16px;
display:flex; flex-direction:column; overflow:hidden; min-width:0;}
.panel.left{width:var(--wL,290px); flex:0 0 auto;}
.panel.right{width:var(--wR,340px); flex:0 0 auto;}
.panel.mid{flex:1 1 auto; min-width:340px; background:var(--read);}
.phead{display:flex; align-items:center; gap:10px; padding:13px 16px; border-bottom:1px solid var(--line); flex:0 0 auto;}
.ptitle{font-size:13px; font-weight:600; color:var(--ink); flex:1; min-width:0;
font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;}
.ptitle.t{font-size:17px; line-height:1.3; font-family:"Iowan Old Style",Georgia,serif;}
.ptitle.t .tzh{display:block; font-size:12.5px; color:var(--ink-soft); font-weight:400; margin-top:3px; font-family:"Songti SC",serif;}
.pbody{flex:1 1 auto; overflow-y:auto; padding:14px 16px;}
.panel.mid .pbody{padding:24px 28px 70px;}
.pbody::-webkit-scrollbar{width:9px;} .pbody::-webkit-scrollbar-thumb{background:#d7cdba; border-radius:5px;}
.icon{background:transparent; color:var(--muted); font-size:17px; line-height:1; padding:3px 8px; border-radius:8px;}
.icon:hover{background:rgba(0,0,0,.06); color:var(--ink);}
.chip{background:#e8e1d3; color:#4a463e; font-size:12px; padding:5px 11px; border-radius:16px;}
.chip:hover:not(:disabled){background:#ded6c6;}
.chip.primary{background:var(--accent); color:#fff;} .chip.primary:hover:not(:disabled){background:#811611;}
/* 拖拽分隔条 */
.resizer{flex:0 0 7px; align-self:stretch; cursor:col-resize; border-radius:4px; background:transparent; transition:background .15s;}
.resizer:hover,.resizer.drag{background:#c7d0dc;}
/* 折叠态：收成窄条 */
.panel.collapsed{width:48px!important; flex:0 0 48px;}
.panel.collapsed .pbody{display:none;}
.panel.collapsed .phead{flex-direction:column; padding:12px 4px; gap:10px; border-bottom:none;}
.panel.collapsed .ptitle{writing-mode:vertical-rl; text-orientation:mixed; flex:0 0 auto; font-size:12px;}
.panel.collapsed .chip{display:none;}
/* 左栏：标题列表 */
.issue{font-size:12px; color:var(--muted); margin-bottom:12px;}
.sec{font-size:11px; letter-spacing:.6px; text-transform:uppercase; color:var(--accent);
margin:16px 0 6px; padding-bottom:4px; border-bottom:1px solid var(--line);}
.art{padding:8px 9px; border-radius:7px; cursor:pointer; margin-bottom:2px;}
.art:hover{background:#efe7d7;}
.art.active{background:var(--accent-soft);}
.art .en{font-size:13.5px; line-height:1.35; color:var(--ink);}
.art .zh{font-size:12px; line-height:1.35; color:var(--ink-soft); margin-top:2px;
font-family:"Songti SC","Noto Serif SC",serif;}
.art .pg{float:right; font-size:11px; color:var(--muted); margin-left:6px;}
.empty{color:var(--muted); font-size:13px; padding:30px 6px; text-align:center; line-height:1.7;}
/* 中栏：阅读 */
#reader{max-width:760px; margin:0 auto; font-size:18px; line-height:1.9; color:var(--ink); text-align:justify; hyphens:none;}
#reader p{margin:0 0 1.1em;}
#reader p:last-child{margin-bottom:0;}
.hint{max-width:760px; margin:0 auto 14px; font-size:12.5px; color:var(--muted);}
.mark-word{background:var(--mark-w); border-bottom:2px solid var(--mark-w-b); border-radius:2px; cursor:pointer;}
.mark-sent{background:var(--mark-s); border-bottom:2px solid var(--mark-s-b); border-radius:2px; cursor:pointer;}
/* 右栏：解析 */
.ana{background:var(--read); border:1px solid var(--line); border-radius:10px; padding:12px 13px; margin-bottom:11px;}
.ana .snip{font-size:13.5px; font-weight:600; line-height:1.4; margin-bottom:7px;}
.tag{display:inline-block; font-size:10.5px; padding:1px 7px; border-radius:9px; margin-left:6px; vertical-align:middle; font-weight:400;}
.tag.w{background:var(--mark-w);} .tag.s{background:var(--mark-s);}
.ana .field{font-size:13px; line-height:1.6; margin:5px 0; color:var(--ink-soft);
font-family:"Songti SC","Noto Serif SC",serif;}
.ana .lbl{color:var(--accent); font-size:11px; font-weight:700; margin-right:5px;
font-family:Georgia,serif; letter-spacing:.3px;}
.ana .struct{font-size:12.5px; color:var(--muted); margin-top:4px; padding-left:8px; border-left:2px solid var(--line);}
.pending{color:var(--muted); font-size:12px;}
#popup{position:fixed; display:none; gap:6px; background:#2c2a26; padding:6px; border-radius:9px; z-index:90; box-shadow:0 6px 18px rgba(0,0,0,.25);}
#popup button{background:#3d3a34; color:#f3eee2;} #popup button:hover{background:#504c44;}
/* 即点即查释义卡 */
#wordCard{position:fixed; display:none; z-index:95; width:min(340px,88vw);
background:var(--read); border:1px solid var(--line); border-radius:12px;
box-shadow:0 10px 30px rgba(0,0,0,.18); padding:13px 15px;}
#wordCard .wc-w{font-size:16px; font-weight:700;}
#wordCard .wc-ph{color:var(--muted); font-size:12.5px; margin-left:7px;}
#wordCard .wc-close{position:absolute; right:8px; top:6px; background:transparent; color:var(--muted); font-size:15px; padding:2px 7px;}
#wordCard .wc-close:hover{color:var(--ink);}
#wordCard .field{font-size:13px; line-height:1.6; margin:6px 0 0; color:var(--ink-soft); font-family:"Songti SC","Noto Serif SC",serif;}
#wordCard .lbl{color:var(--accent); font-size:11px; font-weight:700; margin-right:5px; font-family:Georgia,serif;}
/* 全文解析区块 */
.fullana-h{display:flex; align-items:center; gap:8px; font-size:12px; font-weight:700; color:var(--accent);
margin:6px 0 8px; padding-bottom:4px; border-bottom:1px solid var(--line); letter-spacing:.5px;}
.addv{background:#e8e1d3; color:#4a463e; font-size:11px; padding:2px 8px; border-radius:10px; margin-left:6px; vertical-align:middle;}
.addv:hover:not(:disabled){background:#ded6c6;}
/* 不背单词官网入口 */
.bbdc{display:inline-flex; align-items:center; gap:6px; text-decoration:none;
background:#e8e1d3; color:#3a4a47; padding:5px 11px 5px 6px; border-radius:18px; font-size:13px;
font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif; transition:.15s;}
.bbdc:hover{background:#ded6c6;}
.bbdc .lg{width:22px; height:22px; border-radius:6px; display:block; flex:0 0 auto; object-fit:cover;}
.bbdc .fallback{width:22px; height:22px; border-radius:6px; background:#16b6a6; color:#fff;
display:none; align-items:center; justify-content:center; font-size:12px; font-weight:700;
font-family:-apple-system,"PingFang SC",sans-serif;}
.bbdc .ext{font-size:10px; color:var(--muted); margin-left:1px;}
/* 移动端底部分页栏（默认隐藏，窄屏显示）*/
.mtabs{display:none; position:fixed; left:0; right:0; bottom:0; z-index:85;
background:var(--read); border-top:1px solid var(--line);
padding-bottom:env(safe-area-inset-bottom);}
.mtabs button{flex:1; background:transparent; border:none; border-radius:0; color:var(--muted);
display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px;
padding:8px 0; font-size:19px; line-height:1;
font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;}
.mtabs button span{font-size:11px;}
.mtabs button.active{color:var(--accent);}
.mtabs button.active span{font-weight:700;}
/* ===== 平板 / 手机：单栏分页切换 ===== */
@media(max-width:900px){
html,body{height:100%;}
body{display:flex; flex-direction:column; padding-bottom:calc(58px + env(safe-area-inset-bottom));}
header{flex:0 0 auto; flex-wrap:wrap; gap:10px 12px; padding:10px 14px;}
.app{flex:1 1 auto; min-height:0; height:auto; flex-direction:column; padding:8px; gap:8px;}
.resizer{display:none;}
.phead .icon{display:none;} /* 折叠按钮在移动端无意义 */
.panel{width:auto!important; flex:1 1 auto!important; min-height:0; border-radius:14px;
display:none!important;} /* 默认全部隐藏，仅显示当前分页 */
#app[data-pane="left"] .panel.left,
#app[data-pane="mid"] .panel.mid,
#app[data-pane="right"] .panel.right{display:flex!important;}
.panel.collapsed{width:auto!important; flex:1 1 auto!important;}
.panel.collapsed .pbody{display:block;}
.panel.collapsed .phead{flex-direction:row; padding:13px 16px; border-bottom:1px solid var(--line);}
.panel.collapsed .ptitle{writing-mode:horizontal-tb;}
.panel.mid .pbody{padding:18px 16px 30px;}
#reader{font-size:17px; line-height:1.85;}
#popup button{padding:11px 16px; font-size:15px;} /* 触摸目标更大 */
.keypanel{width:min(392px,92vw); right:0;} /* AI 设置面板不溢出窄屏 */
.mtabs{display:flex;}
}
</style>
</head>
<body>
<header>
<span class="brand">📕 经济学人智能阅读助手<small>中英对照 · 护眼三栏</small></span>
<input type="file" id="file" accept="application/pdf" style="display:none" onchange="upload()" />
<button class="ghost" onclick="document.getElementById('file').click()">导入 PDF</button>
<div class="prog" id="prog"><div class="bar-track"><div class="bar-fill" id="barFill"></div></div><span id="barLabel"></span></div>
<span class="sp"></span>
<a class="bbdc" href="https://learnywhere.cn" target="_blank" rel="noopener"
title="打开「不背单词」官网（登录后到「自制词书」上传导出的 .txt）">
<img class="lg" src="https://learnywhere.cn/favicon.ico" alt="不背单词"
onerror="this.style.display='none';this.nextElementSibling.style.display='inline-flex';" />
<span class="fallback">背</span>不背单词<span class="ext">↗</span>
</a>
<div class="keybox">
<button class="ghost" onclick="document.getElementById('keypanel').classList.toggle('open')">⚙ AI 设置</button>
<div class="keypanel" id="keypanel">
<div style="font-size:13px;margin-bottom:6px;font-weight:600;">AI 模型设置（可选）</div>
<div class="muted">支持 Claude 及任意 OpenAI 兼容接口（DeepSeek、Kimi、智谱、OpenRouter、本地 Ollama、OpenAI 等）。配置仅存于本机浏览器，直连所选服务，不经任何中转。</div>
<label class="fld">服务商预设</label>
<select id="cfgPreset" onchange="applyPreset()">
<option value="">— 自定义 —</option>
<option value="anthropic">Anthropic（Claude 官方）</option>
<option value="openai">OpenAI</option>
<option value="deepseek">DeepSeek</option>
<option value="moonshot">Kimi / Moonshot</option>
<option value="zhipu">智谱 GLM</option>
<option value="openrouter">OpenRouter（聚合，支持浏览器）</option>
<option value="ollama">本地 Ollama</option>
</select>
<label class="fld">接口类型</label>
<select id="cfgFormat">
<option value="openai">OpenAI 兼容 (/chat/completions)</option>
<option value="anthropic">Anthropic (/v1/messages)</option>
</select>
<label class="fld">模型网址 Base URL</label>
<input type="text" id="cfgBase" placeholder="https://api.deepseek.com/v1" />
<label class="fld">API Key</label>
<input type="password" id="cfgKey" placeholder="sk-..." />
<label class="fld">模型</label>
<div class="row" style="gap:6px;">
<input type="text" id="cfgModel" list="modelList" placeholder="deepseek-chat" style="flex:1;" />
<button class="ghost" onclick="fetchModels()" style="white-space:nowrap;">拉取</button>
</div>
<datalist id="modelList"></datalist>
<div class="row" style="margin-top:11px;">
<button class="primary" onclick="saveCfg()">保存</button>
<button class="ghost" onclick="testConn()" style="margin-left:6px;">测试连接</button>
<span class="muted" id="cfgStatus" style="margin-left:8px;"></span>
</div>
<div class="muted" style="margin-top:9px;line-height:1.6;">⚠ 部分服务商不允许浏览器直连（CORS 限制），如 OpenAI、DeepSeek 可能被拦。<b>OpenRouter</b> 和 <b>本地 Ollama</b> 对浏览器最友好；若被拦可改用 mvp 后端版或自建代理。</div>
</div>
</div>
</header>
<div class="app" id="app" data-pane="left">
<section class="panel left" id="pLeft">
<div class="phead">
<span class="ptitle">文章</span>
<button class="chip" id="trBtn" style="display:none" onclick="translateTitles()">中英对照</button>
<button class="icon" id="colL" title="收起" onclick="collapsePanel('left')">‹</button>
</div>
<div class="pbody">
<div class="issue" id="issueHint"></div>
<div id="list"><div class="empty">点击右上角「导入 PDF」<br>开始阅读本期《经济学人》</div></div>
</div>
</section>
<div class="resizer" data-rz="L" title="拖动调节宽度"></div>
<section class="panel mid" id="pMid">
<div class="phead" id="midHead" style="display:none">
<span class="ptitle t" id="artTitle"></span>
<button class="chip" id="anaBtn" onclick="analyzeAll()">解析标记</button>
<button class="chip primary" id="fullBtn" onclick="analyzeArticle()">完成阅读 · 全文解析</button>
</div>
<div class="pbody">
<div class="hint" id="readerHint" style="display:none">用鼠标选中正文里的单词或句子，会弹出「标为生词 / 标为长难句」，标记会出现在右栏。</div>
<div id="reader"><div class="empty" style="margin-top:60px">选择左栏的文章后<br>正文会显示在这里</div></div>
</div>
</section>
<div class="resizer" data-rz="R" title="拖动调节宽度"></div>
<section class="panel right" id="pRight">
<div class="phead">
<button class="icon" id="colR" title="收起" onclick="collapsePanel('right')">›</button>
<span class="ptitle">标记与解析</span>
<button class="chip" id="anaAllBtn" style="display:none" onclick="analyzeAll()">解析全部</button>
<button class="chip" id="exportBtn" title="导出全部生词为 JSON 到 vocab 文件夹（首次会让你选定文件夹，建议选 exports/）" onclick="exportVocab()">导出生词</button>
</div>
<div class="pbody" id="anaList"><div class="empty">阅读时标记的生词<br>和长难句解析会显示在这里</div></div>
</section>
</div>
<nav class="mtabs" id="mtabs">
<button data-pane="left" onclick="setPane('left')">📑<span>文章</span></button>
<button data-pane="mid" onclick="setPane('mid')">📖<span>阅读</span></button>
<button data-pane="right" onclick="setPane('right')">✍️<span>标记</span></button>
</nav>
<div id="popup">
<button onmousedown="mark('word')">查词 · 入生词本</button>
<button onmousedown="mark('sentence')">标为长难句</button>
</div>
<div id="wordCard"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js"></script>
<script>
if(window.pdfjsLib) pdfjsLib.GlobalWorkerOptions.workerSrc="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js";
/* ===== 解析逻辑（与后端同算法，已在 Node 验证）===== */
const HEADING_LOW=13.0,HEADING_HIGH=27.0;
const SECTION_NAMES=["The world this week","Leaders","Letters","By Invitation","Briefing","United States","The Americas","Asia","China","Middle East & Africa","Europe","Britain","International","Business","Finance & economics","Science & technology","Culture","Economic & financial indicators","Obituary"];
const COLUMN_NAMES=["LEXINGTON","BANYAN","ASHOKA","CHAGUAN","CHARLEMAGNE","BAGEHOT","THE TELEGRAM","BARTLEBY","SCHUMPETER","BUTTONWOOD","FREE EXCHANGE","BACK STORY","BY INVITATION"];
const NOISE=["scan here","economist.com","events.economist","subscribe","to find out more","contributors include","contents"];
const AD_MARKERS=["economist.com/","events.economist","scan here","forum for business leaders","register now"];
const HINT_RE=/The Economist\s+[A-Z][a-z]+ \d{1,2}[a-z]{2} \d{4}/;
const cleanT=t=>t.replace(/fi/g,"fi").replace(/fl/g,"fl").trim();
const titleCase=s=>s.toLowerCase().replace(/\b\w/g,c=>c.toUpperCase());
function headingBlocks(items){
let cand=items.filter(it=>{const t=it.str.trim();if(!t)return false;
const a=t.replace(/[^A-Za-z]/g,"").length;if(a<=2&&it.size>=19)return false;
return it.size>=HEADING_LOW&&it.size<=HEADING_HIGH;});
cand.sort((a,b)=>(b.y-a.y)||(a.x-b.x));
const lines=[];
for(const it of cand){const p=lines[lines.length-1];
if(p&&Math.abs(p.y-it.y)<3){p.text=(p.text+" "+it.str).trim();p.x=Math.min(p.x,it.x);}
else lines.push({y:it.y,x:it.x,text:it.str.trim()});}
const blocks=[];
for(const ln of lines){const p=blocks[blocks.length-1];
const sc=p&&Math.abs(ln.x-p.x)<18, bl=p&&(p.y-ln.y)>0&&(p.y-ln.y)<26;
if(sc&&bl){p.text=(p.text+" "+ln.text).trim();p.y=ln.y;}else blocks.push({y:ln.y,x:ln.x,text:ln.text});}
return blocks;
}
const pagePlain=items=>items.map(i=>i.str).join("\n");
function parsePages(pages){
const total=pages.length;
if(pages.slice(0,3).map(p=>pagePlain(p.items)).join("").trim().length<=150)
return {issue_hint:null,page_count:total,has_text_layer:false,sections:[]};
let hint=null,sec="(未分类)",pend=null; const arts=[];
for(let pno=0;pno<total;pno++){
if(pno===0)continue;
const items=pages[pno].items, plain=pagePlain(items), low=plain.toLowerCase();
if(hint===null&&pno<12){const m=HINT_RE.exec(plain.replace(/\s+/g," "));if(m)hint=m[0];}
if(AD_MARKERS.some(mk=>low.includes(mk)))continue;
const printed=pno+1;
for(const blk of headingBlocks(items)){
let text=cleanT(blk.text); const tl=text.toLowerCase();
if(NOISE.some(k=>tl.includes(k)))continue;
const s=SECTION_NAMES.find(x=>text===x||text.startsWith(x+" "));
if(s){sec=s;const r=text.slice(s.length).trim();if(!r)continue;text=r;}
if(COLUMN_NAMES.includes(text.toUpperCase())){pend=titleCase(text);continue;}
for(const c of COLUMN_NAMES){if(text.toUpperCase().startsWith(c+" ")){pend=titleCase(c);text=text.slice(c.length).trim();break;}}
let t=text; if(pend){t=pend+": "+t;pend=null;}
arts.push({section:sec,title:t,start_page:printed});
}
}
for(let i=0;i<arts.length;i++){const n=i+1<arts.length?arts[i+1].start_page:total;
arts[i].end_page=(n>arts[i].start_page)?Math.max(arts[i].start_page,n-1):arts[i].start_page;}
const sections=[];
for(const a of arts){if(!sections.length||sections[sections.length-1].section!==a.section)sections.push({section:a.section,articles:[]});
sections[sections.length-1].articles.push({title:a.title,start_page:a.start_page,end_page:a.end_page});}
return {issue_hint:hint,page_count:total,has_text_layer:true,sections};
}
/* 正文重排：按 x 间距还原词间空格、频率直方图分栏、去连字符、还原段落、恢复首字下沉
（多栏顺序与各类版式已在 Node 上用本期多篇文章验证）*/
function lineText(items){
items.sort((a,b)=>a.x-b.x);
let t='', prevEnd=null;
for(const it of items){ if(prevEnd!==null&&it.x-prevEnd>0.22*it.size)t+=' '; t+=it.str; prevEnd=it.x+(it.w||0); }
return t.replace(/\s+/g,' ').trim();
}
function isNoise(t){
if(!t||t.length<2)return true;
if(/the economist/i.test(t)&&/\d{4}/.test(t))return true; // 页眉
if(/^\d{1,3}\s+[A-Z]/.test(t))return true; // 跨版引用 "65 Insuring…"
if(/^[A-Z0-9][A-Z0-9 ,.'&\-]{1,30}$/.test(t)&&!/[a-z]/.test(t))return true; // 全大写地名/kicker
const letters=(t.match(/[A-Za-z]/g)||[]).length;
if(letters<t.length*0.5)return true; // 图表数字/符号为主
return false;
}
function detectCols(items){
const cnt={}; items.forEach(it=>{const k=Math.round(it.x);cnt[k]=(cnt[k]||0)+1;});
const thr=Math.max(4,items.length*0.04);
const peaks=Object.entries(cnt).map(([x,c])=>[+x,+c]).filter(([x,c])=>c>=thr).sort((a,b)=>a[0]-b[0]);
const cols=[];
for(const [x,c] of peaks){ const n=cols.find(g=>Math.abs(g.x-x)<70);
if(n){ if(c>n.c)n.c=c; n.x=Math.min(n.x,x); } else cols.push({x,c}); }
return cols.map(g=>g.x).sort((a,b)=>a-b);
}
function extractFlow(pages,start,end){
end=end||start; const out=[];
for(let pno=start-1;pno<Math.min(end,pages.length);pno++){
const all=pages[pno].items.filter(it=>it.str.trim()&&it.y<=712&&it.y>=24);
let items=all.filter(it=>it.size>=8.3&&it.size<=11);
if(!items.length)continue;
const cols=detectCols(items); if(!cols.length)continue;
const colIdx=x=>{let bi=0,bd=1e9;cols.forEach((c,i)=>{const d=Math.abs(x-c);if(d<bd){bd=d;bi=i;}});return bi;};
const caps=all.filter(it=>/^[A-Za-z]$/.test(it.str.trim())&&it.size>=15)
.map(it=>({L:it.str.trim(),x:it.x,y:it.y,col:colIdx(it.x)}));
const byCol={}; items.forEach(it=>{const c=colIdx(it.x);(byCol[c]=byCol[c]||[]).push(it);});
const pageParas=[];
for(let c=0;c<cols.length;c++){
const its=byCol[c]; if(!its)continue;
its.sort((a,b)=>(b.y-a.y)||(a.x-b.x));
const rows=[]; let cur=null;
for(const it of its){ if(cur&&Math.abs(cur.y-it.y)<3.5)cur.items.push(it); else {if(cur)rows.push(cur);cur={y:it.y,items:[it]};} }
if(cur)rows.push(cur);
const margin=cols[c];
const lines=rows.map(r=>({y:r.y,x:Math.min(...r.items.map(i=>i.x)),text:lineText(r.items)}))
.filter(l=>l.x<=margin+30&&!isNoise(l.text));
if(!lines.length)continue;
let buf='',y0=null,prevInd=false;
const flush=()=>{const t=buf.trim();if(t)pageParas.push({col:c,y:y0,text:t});buf='';};
for(const l of lines){
const ind=l.x>margin+4;
if(buf&&ind&&!prevInd) flush();
if(!buf)y0=l.y;
if(buf&&/[a-z]-$/.test(buf))buf=buf.slice(0,-1)+l.text; else buf=(buf?buf+' ':'')+l.text;
prevInd=ind;
}
flush();
}
for(const cap of caps){ // 恢复首字下沉到同列、y 最接近的段首
let best=null,bd=1e9;
for(const p of pageParas){ if(p.col!==cap.col)continue; const d=Math.abs(p.y-cap.y); if(d<bd){bd=d;best=p;} }
if(best&&bd<40) best.text=cap.L+best.text;
}
pageParas.forEach(p=>out.push(p.text));
}
return out.map(p=>p.replace(/fi/g,'fi').replace(/fl/g,'fl').replace(/\s+/g,' ').trim()).filter(p=>p.length>1);
}
/* ===== 状态 ===== */
let PAGES=[], FLAT=[], TITLE_ZH={}, curKey=null;
const ANN={}; // title -> [{kind,snippet,analysis,sentence,marked_at}]
const ART_FULL={}; // title -> 全文解析结果 {phrases,sentences}
let CUR_PARAS=[]; // 当前文章段落，供全文解析使用
let lastSel="", lastCtx="", lastRect=null; // lastCtx：选区所在段落文本；lastRect：选区位置（释义卡定位）
let vocabDirHandle=null; // File System Access：选定的导出文件夹句柄
window.CUR_ISSUE=""; // 当期期次（由 PDF 解析得到，用于导出文件名）
/* ===== 阶段一：导入 ===== */
async function upload(){
const f=document.getElementById('file').files[0]; if(!f)return;
if(!window.pdfjsLib){alert('PDF.js 未加载，请检查网络后刷新');return;}
const prog=document.getElementById('prog'),fill=document.getElementById('barFill'),label=document.getElementById('barLabel');
prog.style.display='flex'; fill.style.width='0'; label.textContent='读取文件…';
const buf=await f.arrayBuffer(); let doc;
try{doc=await pdfjsLib.getDocument({data:new Uint8Array(buf)}).promise;}
catch(e){label.textContent='无法打开 PDF：'+e.message;return;}
PAGES=[]; const total=doc.numPages;
for(let i=1;i<=total;i++){
const pg=await doc.getPage(i), tc=await pg.getTextContent();
PAGES.push({items:tc.items.filter(it=>it.str!==undefined).map(it=>({str:it.str,size:it.height,x:it.transform[4],y:it.transform[5],w:it.width}))});
const pct=Math.round(i/total*100); fill.style.width=pct+'%'; label.textContent=`解析 ${i}/${total} 页`;
if(i%4===0)await new Promise(r=>setTimeout(r));
}
const r=parsePages(PAGES);
if(!r.has_text_layer){label.textContent='无文本层（扫描版），需先 OCR';return;}
FLAT=[]; r.sections.forEach(s=>s.articles.forEach(a=>FLAT.push(Object.assign({section:s.section},a))));
const n=FLAT.length; label.textContent=`完成：${r.page_count} 页 / ${n} 篇`;
setTimeout(()=>prog.style.display='none',2500);
document.getElementById('issueHint').textContent=r.issue_hint||'';
window.CUR_ISSUE=issueToDate(r.issue_hint);
TITLE_ZH={}; renderList(r.sections);
document.getElementById('trBtn').style.display='';
if(getCfg().key) translateTitles(); // 已配置则自动中英对照
}
function renderList(sections){
const el=document.getElementById('list'); el.innerHTML='';
sections.forEach(s=>{
const h=document.createElement('div'); h.className='sec'; h.textContent=s.section; el.appendChild(h);
s.articles.forEach(a=>{
const d=document.createElement('div'); d.className='art'; d.dataset.title=a.title;
d.innerHTML=`<div class="en"><span class="pg">p.${a.start_page}</span>${esc(a.title)}</div>`+
(TITLE_ZH[a.title]?`<div class="zh">${esc(TITLE_ZH[a.title])}</div>`:``);
d.onclick=()=>openArticle(a,d); el.appendChild(d);
});
});
}
/* 批量翻译标题（一次 API 调用）*/
async function translateTitles(){
if(!getCfg().key){alert('请先在右上角「AI 设置」配置模型与 API Key');return;}
const btn=document.getElementById('trBtn'); btn.disabled=true; btn.textContent='翻译中…';
const titles=FLAT.map(a=>a.title);
const prompt=`把下列英文文章标题翻译成简洁、地道的中文，保持新闻标题风格。`+
`严格按 JSON 数组返回，顺序与输入一致，每项是一个中文字符串，不要编号、不要多余文字。\n\n`+
titles.map((t,i)=>`${i+1}. ${t}`).join("\n");
try{
const arr=await callClaude(prompt);
if(Array.isArray(arr)) titles.forEach((t,i)=>{ if(arr[i]) TITLE_ZH[t]=String(arr[i]); });
rerenderListKeepSections();
}catch(e){ alert('翻译失败：'+e.message); }
btn.disabled=false; btn.textContent='中英对照';
}
function rerenderListKeepSections(){
const sections=[];
FLAT.forEach(a=>{if(!sections.length||sections[sections.length-1].section!==a.section)sections.push({section:a.section,articles:[]});
sections[sections.length-1].articles.push(a);});
renderList(sections);
if(curKey){const d=[...document.querySelectorAll('.art')].find(x=>x.dataset.title===curKey); if(d)d.classList.add('active');}
}
/* ===== 阶段二：阅读 + 标记 ===== */
function openArticle(a,node){
curKey=a.title; if(!ANN[a.title])ANN[a.title]=[];
document.querySelectorAll('.art').forEach(x=>x.classList.remove('active')); if(node)node.classList.add('active');
document.getElementById('midHead').style.display='flex';
document.getElementById('readerHint').style.display='';
document.getElementById('artTitle').innerHTML=esc(a.title)+(TITLE_ZH[a.title]?`<span class="tzh">${esc(TITLE_ZH[a.title])}</span>`:``);
const paras=extractFlow(PAGES,a.start_page,a.end_page);
CUR_PARAS=paras;
const reader=document.getElementById('reader');
reader.innerHTML = paras.length? paras.map(p=>`<p>${esc(p)}</p>`).join("") : '<div class="empty">（未抽取到正文）</div>';
ANN[a.title].forEach(an=>highlight(an.snippet,an.kind==='word'?'mark-word':'mark-sent'));
renderAnn();
const mb=document.querySelector('#pMid .pbody'); if(mb)mb.scrollTop=0;
if(window.matchMedia('(max-width:900px)').matches) setPane('mid'); // 移动端自动切到阅读页
}
const reader=document.getElementById('reader'), popup=document.getElementById('popup');
const TOUCH=window.matchMedia('(pointer:coarse)').matches; // 触摸设备(iPad/iPhone)
function selInReader(sel){
if(!sel||!sel.rangeCount)return false;
let n=sel.getRangeAt(0).commonAncestorContainer; if(n.nodeType!==1)n=n.parentNode;
return reader.contains(n);
}
function showMarkPopup(){
const sel=window.getSelection(), txt=(sel?sel.toString():'').trim();
if(!txt||!selInReader(sel)){popup.style.display='none';return;}
lastSel=txt;
// 抓取选区所在段落文本，供导出时还原"文中原句"
try{let n=sel.getRangeAt(0).startContainer; if(n.nodeType!==1)n=n.parentNode;
let p=n; while(p&&p.tagName!=='P'&&p!==reader)p=p.parentNode;
lastCtx=(p&&p.textContent)||txt;}catch(e){lastCtx=txt;}
const rect=sel.getRangeAt(0).getBoundingClientRect();
lastRect=rect;
popup.style.display='flex'; // 先显示以测量尺寸
const pw=popup.offsetWidth||130, ph=popup.offsetHeight||42;
let left=rect.left+rect.width/2-pw/2;
left=Math.max(8,Math.min(left,window.innerWidth-pw-8)); // 横向不出屏
let top=TOUCH ? rect.bottom+10 : rect.top-ph-8; // 触摸时放选区下方，避开系统菜单
if(top<8) top=rect.bottom+10;
if(top+ph>window.innerHeight-8) top=rect.top-ph-8;
popup.style.left=left+'px'; popup.style.top=top+'px';
}
reader.addEventListener('mouseup',()=>setTimeout(showMarkPopup,0));
let _selTimer;
document.addEventListener('selectionchange',()=>{ // 触摸设备：选区变化后弹出
if(!TOUCH)return;
clearTimeout(_selTimer); _selTimer=setTimeout(showMarkPopup,350);
});
document.addEventListener('mousedown',e=>{if(!popup.contains(e.target))popup.style.display='none';});
/* 移动端分页切换：文章 / 阅读 / 标记 */
function setPane(name){
const app=document.getElementById('app'); if(!app)return;
app.dataset.pane=name;
document.querySelectorAll('#mtabs button').forEach(b=>b.classList.toggle('active',b.dataset.pane===name));
}
function mark(kind){
popup.style.display='none'; if(!lastSel||!curKey)return;
const dup=ANN[curKey].find(a=>a.snippet===lastSel&&a.kind===kind);
if(dup){ if(kind==='word') showWordCard(dup); lastSel=""; return; }
const a={kind,snippet:lastSel,analysis:null,
sentence:kind==='word'?sentenceAround(lastCtx,lastSel):lastSel,
marked_at:new Date().toISOString()};
ANN[curKey].push(a);
highlight(a.snippet,kind==='word'?'mark-word':'mark-sent');
renderAnn(); lastSel="";
if(kind==='word') lookupWord(a); // 即点即查：立即弹释义卡
}
/* ===== 即点即查释义卡 ===== */
const wordCard=document.getElementById('wordCard');
async function lookupWord(a){
showWordCard(a); // 先显示"查询中…"
if(a.analysis) return;
if(!getCfg().key){ a.analysis=mockWord(); showWordCard(a); renderAnn(); return; }
try{ a.analysis=(await callLLM(WORD_PROMPT.replace('{W}',a.snippet).replace('{C}',a.sentence||'')))||mockWord(); }
catch(e){ a.analysis={_error:e.message}; }
showWordCard(a); renderAnn();
}
function showWordCard(a){
const x=a.analysis||{}; let body;
if(!a.analysis) body='<div class="field"><span class="lbl">…</span>查询中，请稍候</div>';
else if(x._error) body=`<div class="field"><span class="lbl">✗</span>查询失败：${esc(x._error)}（可在右栏点击重试）</div>`;
else body=
`<div class="field"><span class="lbl">义</span>${esc(x.context_meaning||'')}${x.pos?' ('+esc(x.pos)+')':''}</div>`+
((x.common_meanings&&x.common_meanings.length)?`<div class="field"><span class="lbl">项</span>${esc(x.common_meanings.join('；'))}</div>`:``)+
(x.example?`<div class="field"><span class="lbl">例</span>${esc(x.example)}</div>`:``)+
`<div class="field" style="margin-top:8px;color:var(--muted);font-size:11.5px;">已加入生词本 ✓（导出时同步不背单词）</div>`;
wordCard.innerHTML=`<button class="wc-close" onclick="wordCard.style.display='none'">✕</button>`+
`<span class="wc-w">${esc(a.snippet)}</span>${x.phonetic?`<span class="wc-ph">${esc(x.phonetic)}</span>`:``}`+body;
wordCard.style.display='block';
const r=lastRect, cw=wordCard.offsetWidth||340, ch=wordCard.offsetHeight||120;
let left=r?Math.max(8,Math.min(r.left,window.innerWidth-cw-8)):(window.innerWidth-cw)/2;
let top=r?(r.bottom+12):120;
if(r&&top+ch>window.innerHeight-8) top=Math.max(8,r.top-ch-10);
wordCard.style.left=left+'px'; wordCard.style.top=top+'px';
}
document.addEventListener('mousedown',e=>{
if(!wordCard.contains(e.target)&&!popup.contains(e.target)) wordCard.style.display='none';
});
/* 从段落文本中切出包含生词的整句，作为导出的"文中原句" */
function sentenceAround(ctx,sel){
if(!ctx)return"";
const idx=ctx.indexOf(sel); if(idx<0)return ctx.trim().slice(0,300);
const before=ctx.slice(0,idx), after=ctx.slice(idx);
const bs=Math.max(before.lastIndexOf('. '),before.lastIndexOf('? '),before.lastIndexOf('! '));
const start=bs<0?0:bs+2;
const er=after.search(/[.?!](\s|$)/);
const end=er<0?ctx.length:idx+er+1;
return ctx.slice(start,end).trim();
}
function highlight(text,cls){
const safe=text.replace(/[.*+?^${}()|[\]\\]/g,'\\$&');
try{reader.innerHTML=reader.innerHTML.replace(new RegExp(safe),`<span class="${cls}">${esc(text)}</span>`);}catch(e){}
}
/* ===== 生词导出（写入 vocab 文件夹）===== */
const MONTHS={January:1,February:2,March:3,April:4,May:5,June:6,July:7,August:8,September:9,October:10,November:11,December:12};
function issueToDate(hint){
const m=(hint||'').match(/([A-Z][a-z]+)\s+(\d{1,2})[a-z]{2}\s+(\d{4})/);
if(!m||!MONTHS[m[1]])return new Date().toISOString().slice(0,10);
return `${m[3]}-${String(MONTHS[m[1]]).padStart(2,'0')}-${String(+m[2]).padStart(2,'0')}`;
}
function toast(msg,ok=true){
let t=document.getElementById('toast');
if(!t){t=document.createElement('div');t.id='toast';
t.style.cssText='position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:9999;'
+'padding:10px 16px;border-radius:8px;font-size:13px;color:#fff;max-width:80vw;box-shadow:0 4px 16px rgba(0,0,0,.25);';
document.body.appendChild(t);}
t.style.background=ok?'#1f8a4c':'#c0392b'; t.textContent=msg; t.style.opacity='1';
clearTimeout(t._h); t._h=setTimeout(()=>{t.style.transition='opacity .5s';t.style.opacity='0';},3500);
}
/* File System Access：首次选定文件夹，之后用 IndexedDB 记住句柄直接写入 */
function _idb(){return new Promise((res,rej)=>{const r=indexedDB.open('reader_fs',1);
r.onupgradeneeded=()=>r.result.createObjectStore('h');r.onsuccess=()=>res(r.result);r.onerror=()=>rej(r.error);});}
async function _idbGet(k){const db=await _idb();return new Promise((res,rej)=>{const q=db.transaction('h').objectStore('h').get(k);q.onsuccess=()=>res(q.result);q.onerror=()=>rej(q.error);});}
async function _idbSet(k,v){const db=await _idb();return new Promise((res,rej)=>{const q=db.transaction('h','readwrite').objectStore('h').put(v,k);q.onsuccess=()=>res();q.onerror=()=>rej(q.error);});}
async function _perm(h){const o={mode:'readwrite'};
if((await h.queryPermission(o))==='granted')return true;
if((await h.requestPermission(o))==='granted')return true; return false;}
async function ensureVocabDir(forcePick){
if(!window.showDirectoryPicker)return null; // 浏览器不支持→走下载兜底
if(!forcePick){
if(vocabDirHandle&&await _perm(vocabDirHandle))return vocabDirHandle;
try{const saved=await _idbGet('vocabDir'); if(saved&&await _perm(saved)){vocabDirHandle=saved;return saved;}}catch(e){}
}
vocabDirHandle=await window.showDirectoryPicker({mode:'readwrite'});
try{await _idbSet('vocabDir',vocabDirHandle);}catch(e){}
return vocabDirHandle;
}
function collectWords(){
const words=[];
for(const [title,anns] of Object.entries(ANN)){
for(const a of anns){
if(a.kind!=='word'||!a.snippet||!a.snippet.trim())continue;
const an=a.analysis||{};
words.push({word:a.snippet.trim(),pos:an.pos||"",sentence:a.sentence||an.example||"",
definition:an.context_meaning||"",article_title:title,
marked_at:a.marked_at||new Date().toISOString()});
}
}
return words;
}
/* 写一个文件：优先写入选定文件夹，失败/不支持则下载。返回 'dir' | 'download' */
async function writeOut(dir,fname,content,mime){
if(dir){
try{const fh=await dir.getFileHandle(fname,{create:true});
const w=await fh.createWritable(); await w.write(content); await w.close(); return 'dir';}
catch(e){console.warn('写入文件夹失败，改用下载：',e);}
}
const url=URL.createObjectURL(new Blob([content],{type:mime}));
const a=document.createElement('a'); a.href=url; a.download=fname; a.click(); URL.revokeObjectURL(url);
return 'download';
}
/* 把生词去重(忽略大小写)、小写，整理成不背单词可直接导入的「每行一词」文本 */
function toBubeiTxt(words){
const seen=new Set(), lines=[];
for(const w of words){const k=(w.word||'').trim().toLowerCase(); if(!k||seen.has(k))continue; seen.add(k); lines.push(k);}
return lines;
}
async function exportVocab(){
const words=collectWords();
if(!words.length){toast('还没有标注任何生词',false);return;}
const issue=window.CUR_ISSUE||new Date().toISOString().slice(0,10);
const lines=toBubeiTxt(words);
const txt=lines.join('\n')+'\n'; // 不背单词导入用
const json=JSON.stringify({issue,exported_at:new Date().toISOString(),source:"经济学人智能阅读器",words},null,2); // 流水线/存档用
let dir=null;
try{ dir=await ensureVocabDir(false); }
catch(e){ if(e&&e.name==='AbortError')return; console.warn('选择文件夹失败：',e); dir=null; }
const where=await writeOut(dir,`vocab_${issue}.txt`,txt,'text/plain;charset=utf-8');
await writeOut(where==='dir'?dir:null,`vocab_${issue}.json`,json,'application/json');
if(where==='dir')
toast(`已导出 ${lines.length} 个生词 → ${vocabDirHandle.name}/vocab_${issue}.txt · 运行 python3 bubei_sync.py 可全自动上传不背单词`);
else
toast(`已下载 vocab_${issue}.txt 与 .json，请放入 exports/ 后运行 bubei_sync.py 自动上传`);
}
/* ===== 阶段三：解析（右栏）===== */
const SENT_PROMPT=`你是「经济学人智能阅读助手」的长难句解析模块，为中文母语的英语学习者解析句子。仅输出 JSON：{translation,backbone,grammar_points(数组),difficulty_note}。先拆主干，译文地道。只返回 JSON。\n\n【句子】{S}`;
const WORD_PROMPT=`你是「经济学人智能阅读助手」的单词查询模块。仅输出 JSON：{phonetic,pos,context_meaning,common_meanings(数组),example}。结合【原句】优先解释该词在语境中的实际含义。只返回 JSON。\n\n【单词/短语】{W}\n【原句】{C}`;
const ART_PROMPT=`你是「经济学人智能阅读助手」的全文解析模块，面向中文母语英语学习者。通读文章，只输出 JSON：\n{"phrases":[{"phrase":"","meaning":"","usage":""}],"sentences":[{"sentence":"","translation":"","backbone":"","grammar_points":[""]}]}\nphrases 挑选 8-12 个最值得积累的高频短语、地道搭配或习语（meaning 给中文义，usage 摘录文中含该短语的原句片段）；sentences 挑选全文最复杂的 4-6 个长难句（translation 给通顺中文译文，backbone 拆主谓宾主干，grammar_points 列出从句/非谓语/倒装等关键语法点并简要解释）。只返回 JSON，不要多余文字。\n\n【文章】{T}`;
/* 读取 LLM 配置（兼容早期仅存 Anthropic key 的版本）*/
function getCfg(){
let c={}; try{c=JSON.parse(localStorage.getItem('reader_llm_cfg')||'{}');}catch(e){}
if((!c||!c.key)&&localStorage.getItem('reader_api_key'))
c={format:'anthropic',base:'https://api.anthropic.com',key:localStorage.getItem('reader_api_key'),model:'claude-sonnet-4-6'};
return c||{};
}
function llmEndpoint(c){
const base=(c.base||'').replace(/\/+$/,'');
return c.format==='anthropic' ? base+'/v1/messages' : base+'/chat/completions';
}
function llmHeaders(c){
return c.format==='anthropic'
? {'content-type':'application/json','x-api-key':c.key,'anthropic-version':'2023-06-01','anthropic-dangerous-direct-browser-access':'true'}
: {'content-type':'application/json','authorization':'Bearer '+c.key};
}
function extractJSON(text){
const s=text.indexOf('{'), b=text.indexOf('['); let i=(s<0)?b:(b<0?s:Math.min(s,b));
if(i<0) return null;
const close=text.lastIndexOf(text[i]==='{'?'}':']');
return JSON.parse(text.slice(i,close+1));
}
/* 统一调用：根据配置走 Anthropic 或 OpenAI 兼容接口 */
async function callLLM(prompt,maxTokens=2500){
const c=getCfg(); if(!c.key||!c.base||!c.model) return null;
const body={model:c.model,max_tokens:maxTokens,messages:[{role:'user',content:prompt}]};
const resp=await fetch(llmEndpoint(c),{method:'POST',headers:llmHeaders(c),body:JSON.stringify(body)});
if(!resp.ok)throw new Error('API '+resp.status+'：'+(await resp.text()).slice(0,160));
const data=await resp.json();
const text=c.format==='anthropic' ? data.content[0].text : data.choices[0].message.content;
return extractJSON(text);
}
const callClaude=callLLM; // 兼容旧调用名
const mockSent=()=>({translation:'（占位）填入 API Key 后返回真实译文',backbone:'（占位）',grammar_points:['填入 Key 获取语法点'],_mock:true});
const mockWord=()=>({context_meaning:'（占位）填入 API Key 后返回真实释义',common_meanings:['填入 Key 获取义项'],_mock:true});
async function analyzeAll(){
if(!curKey)return; const list=ANN[curKey]||[];
const btn=document.getElementById('anaBtn'), btn2=document.getElementById('anaAllBtn');
btn.disabled=btn2.disabled=true;
for(const a of list){ if(!a.analysis) await analyzeOne(a,false); }
renderAnn(); btn.disabled=btn2.disabled=false;
}
/* ===== 全文解析：高频短语 + 长难句精讲 ===== */
async function analyzeArticle(){
if(!curKey||!CUR_PARAS.length){toast('请先选择一篇文章',false);return;}
if(!getCfg().key){alert('请先在右上角「AI 设置」配置模型与 API Key');return;}
const btn=document.getElementById('fullBtn'); btn.disabled=true; btn.textContent='全文解析中…';
try{
const text=CUR_PARAS.join('\n\n').slice(0,16000);
const r=await callLLM(ART_PROMPT.replace('{T}',text),4000);
if(!r) throw new Error('模型未返回有效 JSON');
ART_FULL[curKey]=r;
analyzeAll(); // 顺带解析未处理的手动标记
toast(`全文解析完成：短语 ${(r.phrases||[]).length} 个 · 长难句 ${(r.sentences||[]).length} 句`);
}catch(e){ alert('全文解析失败：'+e.message); }
btn.disabled=false; btn.textContent='完成阅读 · 全文解析';
renderAnn();
if(window.matchMedia('(max-width:900px)').matches) setPane('right');
}
function addPhraseToVocab(i){
const f=ART_FULL[curKey]; if(!f||!f.phrases||!f.phrases[i])return;
const p=f.phrases[i];
if(ANN[curKey].some(a=>a.kind==='word'&&a.snippet===p.phrase)){toast('该短语已在生词本');return;}
ANN[curKey].push({kind:'word',snippet:p.phrase,
analysis:{context_meaning:p.meaning||'',common_meanings:[],example:p.usage||''},
sentence:p.usage||'',marked_at:new Date().toISOString()});
highlight(p.phrase,'mark-word'); renderAnn(); toast(`「${p.phrase}」已入生词本`);
}
async function analyzeOne(a,render=true){
try{
if(a.kind==='sentence') a.analysis=(await callClaude(SENT_PROMPT.replace('{S}',a.snippet)))||mockSent();
else a.analysis=(await callClaude(WORD_PROMPT.replace('{W}',a.snippet).replace('{C}',a.sentence||'')))||mockWord();
}catch(e){a.analysis={_error:e.message};}
if(render)renderAnn();
}
function renderAnn(){
const el=document.getElementById('anaList');
const list=curKey?(ANN[curKey]||[]):[];
const full=curKey?ART_FULL[curKey]:null;
if((!list||!list.length)&&!full){el.innerHTML='<div class="empty">阅读时标记的生词<br>和长难句解析会显示在这里</div>';return;}
el.innerHTML='';
if(full){
if(full.phrases&&full.phrases.length){
const h=document.createElement('div'); h.className='fullana-h'; h.textContent='📌 高频短语 · 地道搭配'; el.appendChild(h);
full.phrases.forEach((p,i)=>{
const w=document.createElement('div'); w.className='ana';
w.innerHTML=`<div class="snip">${esc(p.phrase||'')}<button class="addv" onclick="addPhraseToVocab(${i})">＋生词本</button></div>`+
`<div class="field"><span class="lbl">义</span>${esc(p.meaning||'')}</div>`+
(p.usage?`<div class="struct">${esc(p.usage)}</div>`:``);
el.appendChild(w);
});
}
if(full.sentences&&full.sentences.length){
const h=document.createElement('div'); h.className='fullana-h'; h.textContent='🧩 长难句精讲'; el.appendChild(h);
full.sentences.forEach(s=>{
const w=document.createElement('div'); w.className='ana';
w.innerHTML=`<div class="snip">${esc(s.sentence||'')}</div>`+
`<div class="field"><span class="lbl">译</span>${esc(s.translation||'')}</div>`+
(s.backbone?`<div class="field"><span class="lbl">干</span>${esc(s.backbone)}</div>`:``)+
((s.grammar_points&&s.grammar_points.length)?`<div class="struct">${esc(s.grammar_points.join('；'))}</div>`:``);
el.appendChild(w);
});
}
}
if(list&&list.length&&full){
const h=document.createElement('div'); h.className='fullana-h'; h.textContent='✍️ 我的标记'; el.appendChild(h);
}
list.forEach((a,idx)=>{
const x=a.analysis||{}, tag=a.kind==='word'?'<span class="tag w">生词</span>':'<span class="tag s">长难句</span>';
let body;
if(!a.analysis) body=`<div class="pending">未解析 · 点此解析</div>`;
else if(x._error) body=`<div class="pending">解析失败：${esc(x._error)}</div>`;
else if(a.kind==='sentence') body=
`<div class="field"><span class="lbl">译</span>${esc(x.translation||'')}</div>`+
(x.backbone?`<div class="field"><span class="lbl">干</span>${esc(x.backbone)}</div>`:``)+
((x.grammar_points&&x.grammar_points.length)?`<div class="struct">${esc(x.grammar_points.join('；'))}</div>`:``);
else body=
`<div class="field"><span class="lbl">义</span>${esc(x.context_meaning||'')}${x.pos?' ('+esc(x.pos)+')':''}</div>`+
((x.common_meanings&&x.common_meanings.length)?`<div class="struct">常见义：${esc(x.common_meanings.join('；'))}</div>`:``)+
(x.example?`<div class="struct">${esc(x.example)}</div>`:``);
const w=document.createElement('div'); w.className='ana';
w.innerHTML=`<div class="snip">${esc(a.snippet)} ${tag} ${x._mock?'<span class="muted">占位</span>':''}</div>${body}`;
w.onclick=()=>{ if(!a.analysis||a.analysis._error) analyzeOne(a); };
el.appendChild(w);
});
document.getElementById('anaAllBtn').style.display = list.some(a=>!a.analysis)?'':'none';
}
/* ===== AI 配置与工具 ===== */
const PRESETS={
anthropic:{f:'anthropic',b:'https://api.anthropic.com',m:'claude-sonnet-4-6'},
openai:{f:'openai',b:'https://api.openai.com/v1',m:'gpt-4o-mini'},
deepseek:{f:'openai',b:'https://api.deepseek.com/v1',m:'deepseek-chat'},
moonshot:{f:'openai',b:'https://api.moonshot.cn/v1',m:'moonshot-v1-32k'},
zhipu:{f:'openai',b:'https://open.bigmodel.cn/api/paas/v4',m:'glm-4-flash'},
openrouter:{f:'openai',b:'https://openrouter.ai/api/v1',m:'anthropic/claude-3.5-sonnet'},
ollama:{f:'openai',b:'http://localhost:11434/v1',m:'llama3.1'},
};
function sanitizeKey(raw){
let k=(raw||'').trim().replace(/[-]/g,'');
return k.replace(/^["']|["']$/g,'').replace(/^Bearer\s+/i,'').trim();
}
function applyPreset(){
const p=PRESETS[document.getElementById('cfgPreset').value]; if(!p)return;
document.getElementById('cfgFormat').value=p.f;
document.getElementById('cfgBase').value=p.b;
document.getElementById('cfgModel').value=p.m;
}
function readForm(){
return {format:document.getElementById('cfgFormat').value,
base:document.getElementById('cfgBase').value.trim(),
key:sanitizeKey(document.getElementById('cfgKey').value),
model:document.getElementById('cfgModel').value.trim()};
}
function saveCfg(){
const c=readForm(), st=document.getElementById('cfgStatus');
if(!c.key||!c.base||!c.model){st.innerHTML='<span style="color:#9c1b14">请填齐 网址 / Key / 模型</span>';return;}
localStorage.setItem('reader_llm_cfg',JSON.stringify(c));
localStorage.removeItem('reader_api_key'); // 清掉旧式存储，统一走新配置
document.getElementById('cfgKey').value=c.key;
st.innerHTML='<span style="color:#2e7d32">已保存 ✓</span>';
}
async function testConn(){
const c=readForm(), st=document.getElementById('cfgStatus');
if(!c.key||!c.base||!c.model){st.innerHTML='<span style="color:#9c1b14">请填齐 网址 / Key / 模型</span>';return;}
st.textContent='测试中…';
try{
const body=c.format==='anthropic'
? {model:c.model,max_tokens:5,messages:[{role:'user',content:'hi'}]}
: {model:c.model,max_tokens:5,messages:[{role:'user',content:'hi'}]};
const r=await fetch(llmEndpoint(c),{method:'POST',headers:llmHeaders(c),body:JSON.stringify(body)});
if(r.ok){ saveCfg(); st.innerHTML='<span style="color:#2e7d32">连接成功 ✓ 模型可用</span>'; return; }
const txt=(await r.text()).slice(0,200); let hint='';
if(r.status===401||r.status===403)hint='：Key 无效或无权限';
else if(r.status===404)hint='：网址或模型名不对（检查 Base URL 与模型）';
else if(r.status===400&&/credit|balance|insufficient/i.test(txt))hint='：账户余额不足';
else if(r.status===429)hint='：频率/额度限制，请稍后再试';
st.innerHTML=`<span style="color:#9c1b14">失败 ${r.status}${esc(hint)}</span>`;
}catch(e){ st.innerHTML='<span style="color:#9c1b14">连接失败（可能被 CORS 拦截）：'+esc(e.message)+'</span>'; }
}
async function fetchModels(){
const c=readForm(), st=document.getElementById('cfgStatus');
if(!c.key||!c.base){st.innerHTML='<span style="color:#9c1b14">请先填网址和 Key</span>';return;}
const base=c.base.replace(/\/+$/,'');
const url=c.format==='anthropic'?base+'/v1/models':base+'/models';
const headers=c.format==='anthropic'
? {'x-api-key':c.key,'anthropic-version':'2023-06-01','anthropic-dangerous-direct-browser-access':'true'}
: {'authorization':'Bearer '+c.key};
st.textContent='拉取模型…';
try{
const r=await fetch(url,{headers}); if(!r.ok)throw new Error('HTTP '+r.status);
const d=await r.json(); const arr=(d.data||d.models||[]).map(m=>m.id||m.name).filter(Boolean);
const dl=document.getElementById('modelList'); dl.innerHTML='';
arr.forEach(id=>{const o=document.createElement('option');o.value=id;dl.appendChild(o);});
st.innerHTML=`<span style="color:#2e7d32">已拉取 ${arr.length} 个模型，点输入框选择</span>`;
}catch(e){ st.innerHTML='<span style="color:#9c1b14">拉取失败：'+esc(e.message)+'（可手动输入模型名）</span>'; }
}
function loadCfgToForm(){
const c=getCfg(); if(!c.format)return;
document.getElementById('cfgFormat').value=c.format||'openai';
document.getElementById('cfgBase').value=c.base||'';
document.getElementById('cfgKey').value=c.key||'';
document.getElementById('cfgModel').value=c.model||'';
document.getElementById('cfgStatus').innerHTML='<span style="color:#2e7d32">已有配置 ✓</span>';
}
function esc(s){return String(s).replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');}
/* ===== 面板拖拽调宽 / 折叠（NotebookLM 风格）===== */
const clampW=(v,a,b)=>Math.max(a,Math.min(b,v));
function collapsePanel(side,silent){
const p=document.getElementById(side==='left'?'pLeft':'pRight');
const btn=document.getElementById(side==='left'?'colL':'colR');
const col=p.classList.toggle('collapsed');
if(!silent) localStorage.setItem('reader_col_'+side, col?'1':'0');
if(btn) btn.textContent = side==='left' ? (col?'›':'‹') : (col?'‹':'›');
}
function initLayout(){
const pL=document.getElementById('pLeft'), pR=document.getElementById('pRight');
const wL=localStorage.getItem('reader_wL'), wR=localStorage.getItem('reader_wR');
if(wL)pL.style.width=wL+'px'; if(wR)pR.style.width=wR+'px';
if(localStorage.getItem('reader_col_left')==='1') collapsePanel('left',true);
if(localStorage.getItem('reader_col_right')==='1') collapsePanel('right',true);
let active=null,sx=0,sL=0,sR=0;
document.querySelectorAll('.resizer').forEach(rz=>rz.addEventListener('mousedown',e=>{
active=rz.dataset.rz; sx=e.clientX; sL=pL.offsetWidth; sR=pR.offsetWidth;
rz.classList.add('drag'); document.body.style.userSelect='none'; e.preventDefault();
}));
window.addEventListener('mousemove',e=>{
if(!active)return; const dx=e.clientX-sx;
if(active==='L'){const w=clampW(sL+dx,210,560); pL.classList.remove('collapsed'); pL.style.width=w+'px'; localStorage.setItem('reader_wL',w);}
else{const w=clampW(sR-dx,230,640); pR.classList.remove('collapsed'); pR.style.width=w+'px'; localStorage.setItem('reader_wR',w);}
});
window.addEventListener('mouseup',()=>{active=null; document.querySelectorAll('.resizer').forEach(r=>r.classList.remove('drag')); document.body.style.userSelect='';});
}
window.addEventListener('load',()=>{ loadCfgToForm(); initLayout(); setPane('left'); });
</script>
</body>
</html>