'use strict';
const $=id=>document.querySelector(id);
const html=s=>String(s??'').replace(/[&<>"']/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));
const pathParts=location.pathname.split('/').filter(Boolean);
const siteId=pathParts[1],initialPage=pathParts[2];
let csrf='',site=null,pages=[],schema=null,reusables=[],pageId=initialPage,blocks=[],kind='standard',layoutMode='append',selected=-1,dirty=false,timer=null;
const api=async(p,opt={})=>{if(!['GET','HEAD','OPTIONS'].includes((opt.method||'GET').toUpperCase()))opt.headers={...(opt.headers||{}),'X-SiteForge-CSRF':csrf};let r=await fetch(p,opt);if(r.status===401){location.assign('/login');throw Error('会话已过期')}let t=r.headers.get('content-type')||'';let body=t.includes('json')?await r.json():await r.text();if(!r.ok)throw Error(body.detail||body);return body};
const req=(method,data)=>({method,headers:{'Content-Type':'application/json'},body:JSON.stringify(data)});
const toast=(s,err=false)=>{const t=$('#toast');t.textContent=s;t.style.background=err?'#a23c44':'#1c3555';t.classList.add('show');setTimeout(()=>t.classList.remove('show'),3400)};
const activePage=()=>pages.find(e=>e.id===pageId);
const editorTools=window.SiteForgeEditorHelpers;
let libraryOpen=false;
let inspectorTab='content',blockSearch='',previewRequest=0,previewController=null,savePromise=null,lastContinuousEdit=0;

let snapshots=[],snapshotCursor=-1,draggedChild=null,draftRevision=0,siteDesign=null,siteDesignRevision=0,siteDesignPreview=null;
function recordSnapshot(){const current=JSON.stringify({blocks,kind,layoutMode});if(snapshotCursor>=0 && snapshots[snapshotCursor]===current)return;snapshots=snapshots.slice(0,snapshotCursor+1);snapshots.push(current);if(snapshots.length>75)snapshots.shift();snapshotCursor=snapshots.length-1}
function restoreSnapshot(index){if(index<0||index>=snapshots.length)return;snapshotCursor=index;const state=JSON.parse(snapshots[index]);blocks=state.blocks;kind=state.kind;layoutMode=state.layoutMode;selected=Math.min(selected,blocks.length-1);$('#pageTemplate').value=kind;$('#layoutMode').value=layoutMode;dirty=true;$('#saveStatus').textContent='未保存更改';$('#saveStatus').classList.add('dirty');Studio.updateHistoryButtons();Studio.draw();Studio.refreshPreview()}
const Studio={
 async init(){try{csrf=(await api('/api/auth/me')).csrf;site=await api(`/api/sites/${siteId}`);pages=await api(`/api/sites/${siteId}/entries`);schema=await api('/api/editor/blocks');$('#siteName').textContent=site.name;const select=$('#pageSelect');select.innerHTML=pages.map(e=>`<option value="${html(e.id)}">${html(e.title)} (${html(e.route)})</option>`).join('');for(let [k,v] of Object.entries(schema.page_templates))$('#pageTemplate').innerHTML+=`<option value="${k}">${html(v.name)}</option>`;Studio.renderPalette();await Studio.loadReusables();await Studio.choosePage(pageId||pages[0]?.id)}catch(e){toast('初始化失败：'+e.message,true);console.error(e)}},
 async choosePage(id){if(savePromise){toast('保存仍在进行，请稍后切换页面',true);$('#pageSelect').value=pageId;return}if(dirty&&!confirm('当前页面尚未保存，确定切换？')){$('#pageSelect').value=pageId;return}pageId=id;$('#pageSelect').value=id;const data=await api(`/api/sites/${siteId}/pages/${id}/studio-draft`);draftRevision=data.revision;blocks=data.blocks.map(b=>structuredClone(b));kind=data.page_template;layoutMode=data.layout_mode||'append';$('#layoutMode').value=layoutMode;selected=blocks.length?0:-1;$('#pageTemplate').value=kind;$('#pageName').textContent=data.entry.title;$('#routeDisplay').textContent=data.entry.route;dirty=false;snapshots=[];snapshotCursor=-1;lastContinuousEdit=0;blockSearch='';$('#blockSearch').value='';recordSnapshot();Studio.updateHistoryButtons();$('#saveStatus').textContent=draftRevision?'草稿 v'+draftRevision:'未修改';$('#saveStatus').classList.remove('dirty');Studio.draw();Studio.refreshPreview()},
 async loadReusables(){try{reusables=await api(`/api/sites/${siteId}/components`);$('#reusablePalette').innerHTML=reusables.map(x=>`<button onclick="Studio.insertReusable('${html(x.id)}')">✦ ${html(x.name)} <small>v${x.version}</small></button>`).join('')||'<span style="font-size:12px;opacity:.55;padding:10px">暂无保存的组件</span>'}catch(e){console.warn(e)}},
 async saveReusable(){const block=blocks[selected];if(!block)return toast('请先选择一个区块',true);const name=prompt('为此组件命名',block.title||schema.blocks[block.type]?.name);if(!name?.trim())return;try{await api(`/api/sites/${siteId}/components`,req('POST',{name,block}));await Studio.loadReusables();toast('组件已保存到本站组件库')}catch(e){toast(e.message,true)}},
 insertReusable(id){const saved=reusables.find(x=>x.id===id);if(!saved)return;const copy=editorTools.duplicate(saved.block,()=>crypto.randomUUID().replace(/-/g,'').slice(0,10));blocks.push(copy);selected=blocks.length-1;Studio.modified();Studio.draw();},
 renderPalette(){let p=$('#palette');p.innerHTML=Object.entries(schema.blocks).map(([key,b])=>`<button onclick="Studio.add('${key}')"><span>${html(b.icon)}</span>${html(b.name)}</button>`).join('')},
 toggleLibrary(force){libraryOpen=typeof force==='boolean'?force:!libraryOpen;const el=$('#sfLibraryPanel'),btn=$('#sfAddBlock');if(el)el.hidden=!libraryOpen;if(btn){btn.setAttribute('aria-expanded',String(libraryOpen));btn.textContent=libraryOpen?'× 收起区块库':'＋ 添加内容区块'};Studio.updateGuidance()},
 showHelp(){const dlg=$('#sfGuideDialog');if(dlg&&!dlg.open)dlg.showModal()},
 updateGuidance(){const one=$('#sfStep1'),two=$('#sfStep2'),three=$('#sfStep3');if(!one||!two||!three)return;one.classList.toggle('active',selected<0||libraryOpen);two.classList.toggle('active',selected>=0&&!dirty&&!libraryOpen);three.classList.toggle('active',dirty);},
 draw(){
   const list=$('#blockList');$('#blockCount').textContent=blocks.length+' 区块';
   const found=editorTools.filterBlocks(blocks,blockSearch,schema.blocks);
   list.innerHTML=found.map(({block:b,index:i})=>`<div class="block-row ${selected===i?'selected':''} ${b.visible===false?'is-hidden':''}" role="listitem" tabindex="0" draggable="true" data-index="${i}" ondragstart="Studio.drag(event,${i})" ondragend="this.classList.remove('dragging')" ondragover="event.preventDefault()" ondrop="Studio.drop(event,${i})" onkeydown="Studio.blockKeydown(event,${i})" onclick="Studio.select(${i})"><div class="drag-handle" title="拖动排序" aria-hidden="true">⠿</div><div class="block-icon">${html(schema.blocks[b.type]?.icon||'▣')}</div><div class="block-copy"><strong>${html(schema.blocks[b.type]?.name||b.type)}</strong><small>${html(b.title||b.subtitle||b.type)}</small></div><div class="row-actions"><button type="button" aria-label="向上移动区块" title="上移" ${i===0?'disabled':''} onclick="event.stopPropagation();Studio.moveBlock(${i},-1)">↑</button><button type="button" aria-label="向下移动区块" title="下移" ${i===blocks.length-1?'disabled':''} onclick="event.stopPropagation();Studio.moveBlock(${i},1)">↓</button><button type="button" title="${b.visible===false?'显示':'隐藏'}" aria-label="切换区块可见性" onclick="event.stopPropagation();Studio.toggleVisible(${i})">${b.visible===false?'◌':'◉'}</button><button type="button" title="复制" aria-label="复制区块" onclick="event.stopPropagation();Studio.duplicate(${i})">⧉</button><button type="button" title="删除" aria-label="删除区块" onclick="event.stopPropagation();Studio.remove(${i})">×</button></div></div>`).join('')||`<div class="no-selection">${blockSearch?'没有找到匹配区块，试试清除搜索。':'当前没有区块，点击下方按钮添加。'}</div>`;
   Studio.inspector();Studio.updateGuidance();
 },
 filter(value){blockSearch=String(value||'').slice(0,100);Studio.draw()},
 clearFilter(){blockSearch='';$('#blockSearch').value='';Studio.draw();$('#blockSearch').focus()},
 moveBlock(i,offset){const target=i+offset;const next=editorTools.reorder(blocks,i,target);if(!next||target===i)return;blocks=next;selected=target;Studio.modified();Studio.draw();},
 toggleVisible(i){if(!blocks[i])return;blocks[i].visible=blocks[i].visible===false;Studio.modified();Studio.draw()},
 blockKeydown(event,i){if(event.target!==event.currentTarget)return;if(event.key==='Enter'||event.key===' '){event.preventDefault();Studio.select(i)}else if(event.altKey && (event.key==='ArrowUp'||event.key==='ArrowDown')){event.preventDefault();Studio.moveBlock(i,event.key==='ArrowUp'?-1:1)}},
 changeInspectorTab(tab){if(!['content','style','responsive'].includes(tab))return;inspectorTab=tab;Studio.applyInspectorTab()},
 applyInspectorTab(){for(const key of ['content','style','responsive']){const active=key===inspectorTab;const btn=$('#tab'+key.charAt(0).toUpperCase()+key.slice(1));btn?.setAttribute('aria-selected',String(active));const pane=$('[data-inspector-section="'+key+'"]');if(pane)pane.hidden=!active}},
 togglePane(which){const type=which==='left'?'show-structure':'show-inspector';document.body.classList.toggle(type);if(type==='show-structure')document.body.classList.remove('show-inspector');else document.body.classList.remove('show-structure');},
 updateHistoryButtons(){const state=editorTools.historyState(snapshots,snapshotCursor);$('#studioUndo').disabled=!state.canUndo;$('#studioRedo').disabled=!state.canRedo},

 select(i){selected=i;Studio.draw();if(window.matchMedia('(max-width:950px)').matches){document.body.classList.add('show-inspector');document.body.classList.remove('show-structure')}},
 add(type){let data=structuredClone(schema.blocks[type].defaults);data.id=crypto.randomUUID().replace(/-/g,'').slice(0,10);data.type=type;data.visible=true;blocks.push(data);selected=blocks.length-1;Studio.modified();Studio.draw();Studio.toggleLibrary(false);if(window.matchMedia('(max-width:950px)').matches){document.body.classList.add('show-inspector');document.body.classList.remove('show-structure')}},
 duplicate(i){const b=editorTools.duplicate(blocks[i],()=>crypto.randomUUID().replace(/-/g,'').slice(0,10));blocks.splice(i+1,0,b);selected=i+1;Studio.modified();Studio.draw()},
 remove(i){if(!confirm('确定删除这个区块？'))return;blocks.splice(i,1);selected=Math.min(i,blocks.length-1);Studio.modified();Studio.draw()},
 drag(e,i){e.dataTransfer.setData('text/plain',String(i));e.dataTransfer.effectAllowed='move';e.currentTarget.classList.add('dragging')},
 drop(e,i){e.preventDefault();let src=Number(e.dataTransfer.getData('text/plain'));if(!Number.isInteger(src)||src<0||src>=blocks.length||src===i)return;const moved=editorTools.reorder(blocks,src,i);if(!moved)return;blocks=moved;selected=i;Studio.modified();Studio.draw()},
 field(key,value){const b=blocks[selected];if(!b)return;b[key]=value;Studio.modified();Studio.draw()},
 fieldQuiet(key,value){const b=blocks[selected];if(!b)return;b[key]=value;Studio.modified(true);const row=$('#blockList').querySelector(`[data-index="${selected}"]`);if(row)row.querySelector('small').textContent=b.title||b.subtitle||b.type},
 arrayEditor(field,value,type){
   const rows=Array.isArray(value)?value:[];
   const labels={title:'标题',text:'文字介绍',value:'数字',label:'名称',question:'问题',answer:'回答',url:'图片地址',alt:'图片说明',image:'图片地址',caption:'图片说明',name:'名称',price:'价格',features:'方案包含的服务',href:'按钮跳转路径'};
   const spec=schema.blocks[type];const sample=(spec?.defaults?.[field]||[])[0]||{url:'',alt:''};
   const keys=Object.keys(sample);
   return `<div class="sf-array-editor"><p class="sf-array-hint">无需填写 JSON：按顺序编辑每一项，修改会自动显示在预览中。</p>`+
   rows.map((row,i)=>`<div class="sf-array-card"><div class="sf-array-card-head"><b>第 ${i+1} 项</b><div><button type="button" title="上移" ${i===0?'disabled':''} onclick="Studio.moveItem('${field}',${i},-1)">↑</button><button type="button" title="下移" ${i===rows.length-1?'disabled':''} onclick="Studio.moveItem('${field}',${i},1)">↓</button><button type="button" title="删除这一项" onclick="Studio.removeItem('${field}',${i})">删除</button></div></div>`+
      keys.map(key=>`<label class="sf-array-field">${html(labels[key]||key)}${key==='text'||key==='answer'||key==='features'?`<textarea oninput="Studio.itemField('${field}',${i},'${key}',this.value)">${html(Array.isArray(row?.[key])?(row[key]||[]).join('\n'):row?.[key]??'')}</textarea>`:`<input type="text" value="${html(row?.[key]??'')}" oninput="Studio.itemField('${field}',${i},'${key}',this.value)">`}</label>`).join('')+
      `</div>`).join('')+`<button type="button" class="sf-array-add" onclick="Studio.addItem('${field}')">＋ 添加${field==='images'?'图片':'一项'}</button></div>`;
 },
 itemField(field,index,key,value){const block=blocks[selected],row=block?.[field]?.[index];if(!row)return;row[key]=key==='features'?String(value).split('\n').map(x=>x.trim()).filter(Boolean):String(value).slice(0,1500);Studio.modified(true)},
 addItem(field){const block=blocks[selected];if(!block)return;const rows=block[field];if(!Array.isArray(rows))return;const limit=field==='images'?24:16;if(rows.length>=limit)return toast(`最多添加 ${limit} 项`,true);const sample=schema.blocks[block.type]?.defaults?.[field]?.[0]||{url:'',alt:''};const next={};for(const [key,val] of Object.entries(sample))next[key]=Array.isArray(val)?[]:'';rows.push(next);Studio.modified();Studio.inspector()},
 removeItem(field,index){const rows=blocks[selected]?.[field];if(!Array.isArray(rows)||!rows[index])return;rows.splice(index,1);Studio.modified();Studio.inspector()},
 moveItem(field,index,by){const rows=blocks[selected]?.[field],target=index+by;if(!Array.isArray(rows)||target<0||target>=rows.length)return;[rows[index],rows[target]]=[rows[target],rows[index]];Studio.modified();Studio.inspector()},
 jsonField(key,value){try{let data=JSON.parse(value);if(!Array.isArray(data))throw Error('必须为数组');Studio.fieldQuiet(key,data);$('#jsonError').textContent='✓ JSON 格式有效';$('#jsonError').style.color='#238460'}catch(e){$('#jsonError').textContent='JSON 格式有误：'+e.message;$('#jsonError').style.color='#bf5a58'}},
 styleField(key,value){const b=blocks[selected];b.style={...(b.style||{}),[key]:value};Studio.modified()},
 inspector(){let target=$('#inspector');let b=blocks[selected];$('#blockTypeLabel').textContent=b?schema.blocks[b.type].name:'页面';if(!b){target.innerHTML='<div class="no-selection"><b>还没有选中内容</b><p>先到左侧选择一个区块，或点击“添加内容区块”。</p><button type="button" class="ui-btn primary" onclick="Studio.toggleLibrary(true)">＋ 添加内容</button></div>';return}const spec=schema.blocks[b.type];let out=`<div class="inspector-title"><h3>${html(spec.name)}</h3><label class="toggle"><input type="checkbox" ${b.visible!==false?'checked':''} onchange="Studio.field('visible',this.checked)">显示</label></div><div data-inspector-section="content">`; 
 for(const field of spec.fields){let value=b[field]??'',label=({title:'标题',subtitle:'副标题',description:'简介',image:'图片地址',body:'正文 HTML',button:'按钮文字',href:'跳转路径',source:'绑定内容类型',limit:'显示条数',columns:'每行列数',items:'重复条目',images:'画廊图片',image_side:'图片方向',align:'标题对齐',height:'间隔高度'})[field]||field;
   out+=`<div class="prop"><label>${html(label)}</label>`;
   if(field==='items'||field==='images')out+=Studio.arrayEditor(field,value,b.type);
   else if(field==='source')out+=`<select onchange="Studio.field('${field}',this.value)">${['product','post','page','vehicle','brand','case','service','other','all'].map(t=>`<option value="${t}" ${t===value?'selected':''}>${({product:'产品',post:'文章',page:'普通页面',vehicle:'车型',brand:'品牌',case:'案例',service:'服务',other:'其他',all:'全部类型'})[t]}</option>`).join('')}</select><span class="prop-tip">网站已有内容将自动绑定并生成卡片。</span>`;
   else if(field==='image_side'||field==='align')out+=`<select onchange="Studio.field('${field}',this.value)">${(field==='align'?['left','center']:['left','right']).map(v=>`<option value="${v}" ${value===v?'selected':''}>${v==='left'?'左侧':v==='right'?'右侧':'居中'}</option>`).join('')}</select>`;
   else if(field==='body'||field==='description')out+=`<textarea onchange="Studio.fieldQuiet('${field}',this.value)">${html(value)}</textarea>`;
   else if(['limit','columns','height'].includes(field))out+=`<input type="number" min="1" max="120" value="${html(value)}" onchange="Studio.fieldQuiet('${field}',Number(this.value))">`;
   else out+=`<input type="text" value="${html(value)}" oninput="Studio.fieldQuiet('${field}',this.value)">`;
   if(['title','subtitle','description','image','body'].includes(field))out+='<small class="prop-tip">可输入 {{site.name}}、{{page.title}} 等变量。</small>';
   out+='</div>';
 }
 out+='</div><div data-inspector-section="responsive">';
 if(b.type==='layout'){
   out+=`<div class="subheading">列内组件 · 按设备排版</div><p class="prop-tip">分别调整平板/手机的列数、顺序、跨度与显隐。保存草稿后在设备预览切换查看效果。</p><div class="prop"><label>平板每行列数 <input type="number" min="1" max="3" value="${html(b.tablet_columns||2)}" onchange="Studio.setDeviceColumns('tablet',this.value)"></label><label>手机每行列数 <input type="number" min="1" max="2" value="${html(b.mobile_columns||1)}" onchange="Studio.setDeviceColumns('mobile',this.value)"></label></div>`;
   b.columns.forEach((column,ci)=>{
     out+=`<div class="layout-editor-col" ondragover="event.preventDefault()" ondrop="Studio.dropChild(event,${ci})"><div class="layout-editor-title"><strong>第${ci+1}列</strong><label>宽度 <input type="number" min="0.5" max="4" step="0.5" value="${html(column.width)}" onchange="Studio.setColumnWidth(${ci},this.value)"></label><button onclick="Studio.removeColumn(${ci})">删除列</button></div>`;
     out+=`<div class="prop"><label>平板排序 <input type="number" min="0" max="20" value="${html(column.tablet_order??(ci+1))}" onchange="Studio.setColumnDevice(${ci},'tablet_order',Number(this.value))"></label><label>手机排序 <input type="number" min="0" max="20" value="${html(column.mobile_order??(ci+1))}" onchange="Studio.setColumnDevice(${ci},'mobile_order',Number(this.value))"></label><label>平板跨列 <input type="number" min="1" max="${html(b.tablet_columns||2)}" value="${html(column.tablet_span||1)}" onchange="Studio.setColumnDevice(${ci},'tablet_span',Number(this.value))"></label><label>手机跨列 <input type="number" min="1" max="${html(b.mobile_columns||1)}" value="${html(column.mobile_span||1)}" onchange="Studio.setColumnDevice(${ci},'mobile_span',Number(this.value))"></label><label><input type="checkbox" ${column.hide_tablet?'checked':''} onchange="Studio.setColumnDevice(${ci},'hide_tablet',this.checked)"> 平板隐藏此列</label><label><input type="checkbox" ${column.hide_mobile?'checked':''} onchange="Studio.setColumnDevice(${ci},'hide_mobile',this.checked)"> 手机隐藏此列</label></div>`;
     column.blocks.forEach((child,j)=>{out+=`<div class="layout-child" draggable="true" ondragstart="Studio.dragChild(event,${ci},${j})"><strong>${html(schema.blocks[child.type]?.name||child.type)}</strong><button onclick="Studio.removeChild(${ci},${j})" title="删除">×</button>`;
       for(const key of (schema.blocks[child.type]?.fields||[]).filter(x=>['title','subtitle','description','image','body','href','button'].includes(x))){out+=`<label>${html(key)}<input value="${html(child[key]??'')}" onchange="Studio.childField(${ci},${j},'${key}',this.value)"></label>`}
       if(b.columns.length>1){out+=`<select onchange="Studio.moveChild(${ci},${j},Number(this.value))"><option value="">移动到其他列</option>${b.columns.map((c,ki)=>ki===ci?'':`<option value="${ki}">第${ki+1}列</option>`).join('')}</select>`}
       out+='</div>';
     });
     out+=`<div class="layout-child-toolbar">${['richtext','image_text','collection','cta','features'].map(t=>`<button onclick="Studio.addChild(${ci},'${t}')">＋${html(schema.blocks[t].name)}</button>`).join('')}</div></div>`;
   });
   out+='<button class="ui-btn ghost" onclick="Studio.addColumn()">＋ 添加列</button>';
 }
 out+=`<div class="subheading">响应式样式</div><div class="prop"><label>平板上下间距（px）</label><input type="number" min="0" max="120" value="${html(b.style?.tablet_padding??50)}" onchange="Studio.styleField('tablet_padding',Number(this.value))"></div><div class="prop"><label>手机上下间距（px）</label><input type="number" min="0" max="120" value="${html(b.style?.mobile_padding??28)}" onchange="Studio.styleField('mobile_padding',Number(this.value))"></div><div class="prop"><label><input type="checkbox" ${b.style?.hide_mobile?'checked':''} onchange="Studio.styleField('hide_mobile',this.checked)"> 手机上隐藏区块</label></div>`;
 out+=`</div><div data-inspector-section="style"><div class="subheading">外观设置</div><div class="prop"><label>背景颜色</label><input type="color" value="${html(b.style?.background||'#ffffff')}" onchange="Studio.styleField('background',this.value)"></div><div class="prop"><label>上下间距（px）</label><input type="number" min="0" max="120" value="${html(b.style?.padding??82)}" onchange="Studio.styleField('padding',Number(this.value))"></div><div class="prop"><label>从图库选择图片</label><button type="button" class="ui-btn ghost" onclick="Studio.chooseMedia()">打开本站素材库</button></div><div class="prop"><label>上传图片</label><input type="file" accept="image/png,image/jpeg,image/webp,image/gif,image/avif" onchange="Studio.uploadImage(this.files[0])"></div></div>`;
 out+='<div style="display:flex;gap:8px;margin-bottom:22px"><button class="small-btn" onclick="Studio.duplicate('+selected+')">复制区块</button><button class="small-btn red-btn" onclick="Studio.remove('+selected+')">删除区块</button></div>';
 target.innerHTML=out;Studio.applyInspectorTab();
 },
 undo(){restoreSnapshot(snapshotCursor-1)},
 redo(){restoreSnapshot(snapshotCursor+1)},
 modified(continuous=false){
   const now=Date.now(),snap=JSON.stringify({blocks,kind,layoutMode});
   if(continuous&&lastContinuousEdit&&now-lastContinuousEdit<850&&snapshotCursor>0&&snapshotCursor===snapshots.length-1){snapshots[snapshotCursor]=snap;}
   else recordSnapshot();
   lastContinuousEdit=continuous?now:0;
   dirty=true;$('#saveStatus').textContent='未保存更改';$('#saveStatus').classList.add('dirty');
   Studio.updateHistoryButtons();Studio.updateGuidance();clearTimeout(timer);timer=setTimeout(()=>Studio.refreshPreview(),550);
 },
 async refreshPreview(){
   if(!pageId)return;
   const page=pageId,seq=++previewRequest;
   if(previewController)previewController.abort();previewController=new AbortController();
   const frame=$('#sitePreview');$('#previewState').textContent='正在更新预览…';$('#previewDot').classList.add('loading');
   try{
     const doc=await api(`/api/sites/${siteId}/pages/${page}/editor-preview`,{...req('POST',{blocks,page_template:kind,layout_mode:layoutMode,site_design:siteDesignPreview}),signal:previewController.signal});
     if(!editorTools.shouldAcceptPreview(page,seq,pageId,previewRequest))return;
     frame.srcdoc=doc;$('#previewState').textContent='实时预览 · 已更新';$('#previewDot').classList.remove('loading','error');
   }catch(e){
     if(!editorTools.shouldAcceptPreview(page,seq,pageId,previewRequest)||e.name==='AbortError')return;
     $('#previewState').textContent='预览更新失败';$('#previewDot').classList.remove('loading');$('#previewDot').classList.add('error');toast('预览失败：'+e.message,true);
   }
 },
 device(type){$('#deviceFrame').className='device-frame '+(type==='desktop'?'':type);$('#deviceDetails').textContent=({desktop:'桌面端 · 自适应宽度',tablet:'平板端 · 780px',phone:'手机端 · 390px'})[type]||'桌面端';for(let name of ['Desktop','Tablet','Phone'])$('#device'+name).classList.toggle('on',name.toLowerCase()===type)},
 changeTemplateKind(t){kind=t;Studio.modified()},
 setLayoutMode(v){layoutMode=v;Studio.modified()},
 async resetPreset(){if(!confirm('用当前主题的预设布局替换草稿？不会更改正式页面。'))return;try{const result=await api(`/api/sites/${siteId}/pages/${pageId}/studio-draft/preset?page_template=${encodeURIComponent(kind)}`);blocks=result.blocks;selected=blocks.length?0:-1;Studio.modified();Studio.draw();toast('已加载预设到草稿，记得保存')}catch(e){toast(e.message,true)}},
 async showHistory(){
   if(!pageId)return toast('请先选择页面',true);
   $('#studioHistoryModal').showModal();$('#studioHistoryItems').textContent='读取历史记录中…';
   try{const data=await api(`/api/sites/${siteId}/pages/${pageId}/studio-history?limit=50`);
     $('#studioHistoryItems').innerHTML=(data.items||[]).map(x=>`<div style="padding:12px 0;border-bottom:1px solid #e2e8f0;display:flex;gap:12px;align-items:center;justify-content:space-between"><div><strong>${x.kind==='published'?'已发布':'草稿'} · v${html(x.revision)}</strong><div style="font-size:12px;color:#64748b">${html(x.created_at)} · ${html(x.actor)} · SHA ${html(x.snapshot_hash.slice(0,12))}</div></div><button class="ui-btn ghost" type="button" onclick="Studio.restoreHistory('${html(x.id)}')">恢复为新草稿</button></div>`).join('')||'<p>当前页面尚无保存记录。</p>';
   }catch(e){$('#studioHistoryItems').textContent='读取失败：'+e.message}
 },
 async restoreHistory(id){
   if(dirty&&!confirm('当前有未保存的本地修改。恢复历史记录将舍弃这些本地修改，继续吗？'))return;
   if(!confirm('确定以这个历史快照创建一个新的设计草稿？已发布的页面不会立即改变。'))return;
   try{await api(`/api/sites/${siteId}/pages/${pageId}/studio-history/${encodeURIComponent(id)}/restore`,req('POST',{expected_revision:draftRevision}));
     dirty=false;$('#studioHistoryModal').close();await Studio.choosePage(pageId);
     toast('历史版本已恢复为新草稿。核对后再点击发布设计。');
   }catch(e){toast('历史恢复失败：'+e.message,true)}
 },
 async save(){
   if(savePromise)return savePromise;
   const page=pageId;const snapshot=JSON.stringify({blocks,kind,layoutMode});const frozen=JSON.parse(snapshot);
   $('#saveStatus').textContent='保存中…';
   savePromise=(async()=>{
     try{
       const result=await api(`/api/sites/${siteId}/pages/${page}/studio-draft`,req('PUT',{blocks:frozen.blocks,page_template:frozen.kind,layout_mode:frozen.layoutMode,expected_revision:draftRevision}));
       if(page!==pageId)return;
       draftRevision=result.revision;
       const unchanged=snapshot===JSON.stringify({blocks,kind,layoutMode});
       dirty=!unchanged;$('#saveStatus').textContent=unchanged?'草稿 v'+draftRevision:'有新修改待保存';
       $('#saveStatus').classList.toggle('dirty',dirty);
       toast(unchanged?'设计草稿已保存，正式构建不受影响':'草稿已保存，但有新修改，需再次保存');
     }catch(e){dirty=true;$('#saveStatus').textContent='保存失败';$('#saveStatus').classList.add('dirty');toast('草稿保存失败：'+e.message,true)}
     finally{savePromise=null;Studio.updateGuidance()}
   })();return savePromise;
 },
 async publishDesign(){if(dirty){await Studio.save();if(dirty)return}if(!draftRevision)return toast('当前没有待发布草稿');if(!confirm('发布设计将更新内容库中的页面布局，下次静态构建才会生效。是否发布？'))return;try{await api(`/api/sites/${siteId}/pages/${pageId}/studio-draft/publish`,req('POST',{expected_revision:draftRevision}));draftRevision=0;$('#saveStatus').textContent='已发布到内容库';Studio.updateGuidance();toast('设计已发布到内容库。要更新线上网站，请在“更多”中构建并部署。')}catch(e){toast('发布失败：'+e.message,true)}},
 async discardDraft(){if(!draftRevision)return;if(!confirm('确定放弃草稿？'))return;try{await api(`/api/sites/${siteId}/pages/${pageId}/studio-draft`,{method:'DELETE'});dirty=false;await Studio.choosePage(pageId);toast('草稿已放弃')}catch(e){toast(e.message,true)}},
 dragChild(event,col,index){draggedChild={container:selected,col,index};event.dataTransfer.setData('application/siteforge-child','1');event.dataTransfer.effectAllowed='move';event.stopPropagation()},
 dropChild(event,destCol){if(!draggedChild)return;event.preventDefault();event.stopPropagation();const drag=draggedChild;draggedChild=null;const src=blocks[drag.container],dest=blocks[selected];if(!src||!dest||src.type!=='layout'||dest.type!=='layout')return;const moved=src.columns?.[drag.col]?.blocks.splice(drag.index,1)[0];if(!moved)return;dest.columns[destCol].blocks.push(moved);Studio.modified();Studio.draw()},
 async showSiteDesign(){try{
   const result=await api(`/api/sites/${siteId}/site-design`);
   siteDesign=result.config;siteDesignRevision=result.revision;siteDesignPreview=structuredClone(siteDesign);
   const form=$('#siteDesignForm'),h=siteDesign.header,f=siteDesign.footer,r=siteDesign.responsive;
   for(const [name,value] of Object.entries(h)){const el=form.elements.namedItem(name);if(el){if(el.type==='checkbox')el.checked=value;else el.value=value}}
   for(const [name,value] of Object.entries(f)){const key='footer_'+name,el=form.elements.namedItem(key);if(el){if(el.type==='checkbox')el.checked=value;else el.value=value}}
   for(const [name,value] of Object.entries(r)){const el=form.elements.namedItem(name);if(el){if(el.type==='checkbox')el.checked=value;else el.value=value}}
   form.elements.namedItem('nav').value=JSON.stringify(siteDesign.nav,null,2);
   form.elements.namedItem('mobile_tabs_enabled').checked=Boolean(siteDesign.mobile_tabs?.enabled);
   Studio.drawMobileTabs(siteDesign.mobile_tabs?.items||[]);
   Studio.toggleMobileTabsForm();
   $('#siteDesignStatus').textContent=result.state==='draft'?`待发布的全站草稿 v${siteDesignRevision}${result.conflict?' · 网站已被其他人修改':''}`:'当前为已发布设计';
   $('#siteDesignModal').showModal();
  }catch(e){toast('全站设计读取失败：'+e.message,true)}},
 drawMobileTabs(items){const root=$('#mobileTabsRows');root.replaceChildren();items.forEach((item,i)=>Studio.addMobileTab(item,i));},
 toggleMobileTabsForm(){const on=$('#siteDesignForm').elements.namedItem('mobile_tabs_enabled').checked;$('#mobileTabsEditor').hidden=!on;},
 addMobileTab(item={title:'新导航',icon:'grid',route:'/',action:'link'},index){
  const root=$('#mobileTabsRows');if(root.children.length>=5){toast('底部最多支持 5 个 Tab',true);return}
  const n=root.children.length;
  const row=document.createElement('div');row.className='mobile-tab-row';row.style.cssText='display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px;border:1px solid #dce3ed;border-radius:10px;background:#fafcff';
  const label=document.createElement('label');label.textContent='按钮名称';const title=document.createElement('input');title.className='mt-title';title.maxLength=12;title.value=item.title||'';label.append(title);
  const iconLabel=document.createElement('label');iconLabel.textContent='按钮图标';const icon=document.createElement('select');icon.className='mt-icon';
  for(const [v,t] of Object.entries({home:'⌂ 首页',grid:'▦ 栏目',products:'▤ 产品',news:'☷ 文章',contact:'✉ 联系',phone:'☎ 电话',info:'ⓘ 关于',search:'⌕ 搜索',menu:'☰ 菜单',star:'☆ 收藏'})){const opt=document.createElement('option');opt.value=v;opt.textContent=t;icon.append(opt)}icon.value=item.icon||'grid';iconLabel.append(icon);
  const actionLabel=document.createElement('label');actionLabel.textContent='点击操作';const action=document.createElement('select');action.className='mt-action';for(const [v,t] of [['link','打开站内页面'],['menu','打开导航抽屉']]){const o=document.createElement('option');o.value=v;o.textContent=t;action.append(o)}action.value=item.action||'link';actionLabel.append(action);
  const routeLabel=document.createElement('label');routeLabel.textContent='链接地址';const route=document.createElement('input');route.className='mt-route';route.placeholder='/products/、https://wa.me/... 或 tel:+...';route.value=item.route||'/';routeLabel.append(route);
  function updateRoute(){routeLabel.hidden=action.value==='menu'}action.addEventListener('change',updateRoute);updateRoute();
  const tools=document.createElement('div');tools.style.cssText='grid-column:1/-1;display:flex;gap:7px;justify-content:flex-end';
  for(const [name,fn] of [['↑ 上移',()=>{const prev=row.previousElementSibling;if(prev)root.insertBefore(row,prev)}],['↓ 下移',()=>{const next=row.nextElementSibling;if(next)root.insertBefore(next,row)}],['删除',()=>row.remove()]]){const b=document.createElement('button');b.type='button';b.className='ui-btn ghost';b.textContent=name;b.addEventListener('click',fn);tools.append(b)}
  row.append(label,iconLabel,actionLabel,routeLabel,tools);root.append(row);
 },
 collectSiteDesign(){const form=$('#siteDesignForm');if(!siteDesign)throw Error('请先打开全站设计');
  const v=(n)=>form.elements.namedItem(n).value;
  const yes=(n)=>form.elements.namedItem(n).checked;
  let nav;try{nav=JSON.parse(v('nav'))}catch(e){throw Error('导航必须是合法 JSON：'+e.message)}
  if(!Array.isArray(nav))throw Error('导航必须是数组');
  const tabs=[...$('#mobileTabsRows').children].map(row=>({title:row.querySelector('.mt-title').value.trim(),icon:row.querySelector('.mt-icon').value,route:row.querySelector('.mt-route').value.trim(),action:row.querySelector('.mt-action').value}));
  if(yes('mobile_tabs_enabled')&&!tabs.length)throw Error('开启底部 Tabs 后，请至少添加一个按钮');
  return {tokens:structuredClone(siteDesign.tokens),mobile_tabs:{enabled:yes('mobile_tabs_enabled'),items:tabs},header:{announcement:v('announcement'),show_announcement:yes('show_announcement'),show_search:yes('show_search'),
    show_cta:yes('show_cta'),cta_text:v('cta_text'),cta_href:v('cta_href')},
    footer:{title:v('footer_title'),description:v('footer_description'),email:v('footer_email'),show_nav:yes('footer_show_nav')},nav,
    responsive:{tablet_gap:Number(v('tablet_gap')),mobile_gap:Number(v('mobile_gap')),
      mobile_container_padding:Number(v('mobile_container_padding')),mobile_hide_announcement:yes('mobile_hide_announcement'),mobile_hide_footer_links:yes('mobile_hide_footer_links')}};
 },
 async previewSiteDesign(){try{siteDesignPreview=Studio.collectSiteDesign();await Studio.refreshPreview();
   $('#siteDesignStatus').textContent='编辑器正在预览未发布的全站设置；静态网站保持不变';toast('已在编辑器预览全站设计')
  }catch(e){toast(e.message,true)}},
 async saveSiteDesign(){try{const config=Studio.collectSiteDesign();let saved=await api(`/api/sites/${siteId}/site-design`,req('PUT',{config,expected_revision:siteDesignRevision}));
   siteDesignRevision=saved.revision;siteDesign=config;siteDesignPreview=structuredClone(config);
   $('#siteDesignStatus').textContent=`草稿 v${siteDesignRevision} 已保存，正式构建保持不变`;toast('全站设计草稿保存成功');return true;
  }catch(e){toast('全站草稿保存失败：'+e.message,true);return false}},
 async publishSiteDesign(){if(!confirm('发布全站设计会影响该站所有页面的下一次静态构建。确定继续？'))return;
  if(!await Studio.saveSiteDesign())return;
  try{await api(`/api/sites/${siteId}/site-design/publish`,req('POST',{expected_revision:siteDesignRevision}));
   siteDesignRevision=0;$('#siteDesignStatus').textContent='全站设计已发布，请重新构建网站';
   $('#siteDesignModal').close();await Studio.refreshPreview();toast('全站设计已发布；现有上线网站仍不改变');
  }catch(e){toast('发布失败：'+e.message,true)}},
 async discardSiteDesign(){if(!confirm('确定删除尚未发布的全站草稿？'))return;
  try{await api(`/api/sites/${siteId}/site-design`,{method:'DELETE'});siteDesignPreview=null;
   await Studio.showSiteDesign();await Studio.refreshPreview();toast('全站草稿已放弃')
  }catch(e){toast(e.message,true)}},
 async showTokens(){try{let current=await api(`/api/sites/${siteId}/site-design`);siteDesign=current.config;siteDesignRevision=current.revision;const tokens=siteDesign.tokens;const modal=$('#designModal');for(const [k,v] of Object.entries(tokens)){const field=modal.querySelector(`[name="${k}"]`);if(field)field.value=v}modal.showModal()}catch(e){toast(e.message,true)}},
 async saveTokens(){const form=$('#designForm'),tokens={};for(const input of form.querySelectorAll('[name]'))tokens[input.name]=input.type==='number'?Number(input.value):input.value;try{let r=await api(`/api/sites/${siteId}/site-design`);siteDesign=r.config;siteDesignRevision=r.revision;siteDesign.tokens=tokens;let saved=await api(`/api/sites/${siteId}/site-design`,req('PUT',{config:siteDesign,expected_revision:siteDesignRevision}));siteDesignRevision=saved.revision;siteDesignPreview=structuredClone(siteDesign);$('#designModal').close();Studio.refreshPreview();toast('设计规范已保存为全站草稿；请在“全站页眉与页脚”中发布')}catch(e){toast(e.message,true)}},
 setDeviceColumns(device,value){const b=blocks[selected];if(!b||b.type!=='layout')return;const max=device==='tablet'?3:2;const next=Math.min(max,Math.max(1,Number(value)||1));b[device+'_columns']=next;b.columns.forEach(c=>c[device+'_span']=Math.min(next,c[device+'_span']||1));Studio.modified();Studio.inspector()},
 setColumnDevice(i,key,value){const b=blocks[selected];if(!b||b.type!=='layout')return;const col=b.columns[i];if(!col)return;col[key]=value;Studio.modified();Studio.inspector()},
 addColumn(){const b=blocks[selected];if(!b||b.type!=='layout'||b.columns.length>=4)return;b.columns.push({width:1,blocks:[]});Studio.modified();Studio.inspector()},
 removeColumn(i){const b=blocks[selected];if(!b||b.type!=='layout'||b.columns.length<=1)return;if(b.columns[i].blocks.length&&!confirm('这一列含有组件，确认删除？'))return;b.columns.splice(i,1);Studio.modified();Studio.inspector()},
 setColumnWidth(i,value){const b=blocks[selected];if(!b||b.type!=='layout')return;b.columns[i].width=Math.max(.5,Math.min(4,Number(value)||1));Studio.modified()},
 addChild(i,type){const b=blocks[selected];if(!b||b.type!=='layout')return;const item=structuredClone(schema.blocks[type].defaults);item.type=type;item.id=crypto.randomUUID().replace(/-/g,'').slice(0,10);item.visible=true;b.columns[i].blocks.push(item);Studio.modified();Studio.inspector()},
 removeChild(i,j){const b=blocks[selected];if(!b||b.type!=='layout')return;b.columns[i].blocks.splice(j,1);Studio.modified();Studio.inspector()},
 childField(i,j,key,value){const b=blocks[selected];if(!b||b.type!=='layout')return;b.columns[i].blocks[j][key]=value;Studio.modified()},
 moveChild(ci,ri,target){const b=blocks[selected];if(!b||b.type!=='layout'||target<0||target>=b.columns.length)return;let [component]=b.columns[ci].blocks.splice(ri,1);b.columns[target].blocks.push(component);Studio.modified();Studio.inspector()},
 async chooseMedia(){try{const data=await api(`/api/sites/${siteId}/media`);const grid=$('#siteMediaGrid');grid.replaceChildren();if(!data.length){grid.textContent='暂无上传图片。可先在当前组件中上传图片。'}for(const item of data){const button=document.createElement('button');button.type='button';button.style.cssText='border:1px solid #e2e8f0;border-radius:9px;background:white;padding:7px;cursor:pointer';const img=document.createElement('img');img.alt=item.name;img.loading='lazy';img.style.cssText='width:100%;height:105px;object-fit:contain';img.src=`/local-media/${encodeURIComponent(siteId)}/${encodeURIComponent(item.name)}`;const label=document.createElement('small');label.textContent=item.name;label.style.cssText='display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap';button.append(img,label);button.addEventListener('click',()=>Studio.applyMedia(item.url));grid.append(button)}$('#siteMediaModal').showModal()}catch(e){toast(e.message,true)}},
 applyMedia(url){const b=blocks[selected];if(!b)return;if(b.type==='gallery'){b.images=[...(b.images||[]),{url,alt:''}]}else if(b.type==='carousel'){b.items=[...(b.items||[]),{image:url,alt:'',caption:''}]}else{b.image=url}Studio.modified();Studio.draw();$('#siteMediaModal').close();toast('已应用素材到草稿')},
 async uploadImage(file){if(!file)return;try{const form=new FormData();form.append('file',file);let r=await api(`/api/sites/${siteId}/media`,{method:'POST',body:form});Studio.field('image',r.url);toast('图片已上传，保存页面后参与构建')}catch(e){toast(e.message,true)}},
 async buildSite(){if(dirty||draftRevision||siteDesignRevision)return toast('有尚未发布的页面或全站草稿，请先发布，再构建网站',true);try{
 toast('已提交后台构建任务');const task=await api(`/api/sites/${siteId}/builds`,req('POST',{mirror_images:false}));
 for(let i=0;i<240;i++){
  await new Promise(resolve=>setTimeout(resolve,1500));
  const status=await api(`/api/enterprise/sites/${siteId}/jobs/${task.id}`);
  if(status.state==='done'){const result=JSON.parse(status.result_json||'{}');toast('构建完成：'+result.pages+' 个页面');if(result.version)window.open(`/preview/${siteId}/${result.version}/`,'_blank','noopener');return}
  if(['failed','cancelled'].includes(status.state)){toast('构建'+status.state+'：'+(status.error||''),true);return}
 }toast('后台任务仍在运行，请稍后查看构建中心');
 }catch(e){toast('构建失败：'+e.message,true)}},
};
window.Studio=Studio;
window.addEventListener('DOMContentLoaded',()=>Studio.init());
window.addEventListener('beforeunload',e=>{if(dirty){e.preventDefault();e.returnValue='';}});

window.addEventListener('message',event=>{
 const frame=document.querySelector('#sitePreview');
 if(!frame||event.source!==frame.contentWindow)return;
 const data=event.data||{};
 if(data.source==='siteforge-select-block'){
   if(typeof data.blockId!=='string'||data.blockId.length>150)return;
   const findTop=rows=>{for(let i=0;i<rows.length;i++){const row=rows[i];if(row.id===data.blockId)return i;if(row.type==='layout'&&row.columns?.some(col=>col.blocks?.some(child=>child.id===data.blockId)))return i}return -1};
   const index=findTop(blocks);if(index>=0){selected=index;Studio.draw();if(window.matchMedia('(max-width:1060px)').matches){document.body.classList.add('show-inspector');document.body.classList.remove('show-structure')}}
   return;
 }
 if(data.source!=='siteforge-inline-editor')return;
 const findChild=rows=>{for(const row of rows){if(row.id===data.blockId)return {block:row,parent:row};if(row.type==='layout'){for(const col of row.columns||[]){const child=findChild(col.blocks||[]);if(child)return {block:child.block,parent:row};}}}return null};
 const found=findChild(blocks),b=found?.block;
 if(!b||!['title','description'].includes(data.field)||typeof data.value!=='string')return;
 b[data.field]=data.value.slice(0,500);
 selected=blocks.indexOf(found.parent);Studio.modified();Studio.draw();
 toast('已修改文字，点击保存页面写入数据库');
});

window.addEventListener('keydown',event=>{
 if(!(event.ctrlKey||event.metaKey)||event.altKey)return;
 const key=event.key.toLowerCase();
 if(key==='s'){event.preventDefault();Studio.save();return}
 const el=document.activeElement;
 if(el&&(['INPUT','TEXTAREA'].includes(el.tagName)||el.isContentEditable))return;
 if(key==='z'){event.preventDefault();event.shiftKey?Studio.redo():Studio.undo()}
 else if(key==='y'){event.preventDefault();Studio.redo()}
});