'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 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(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}/blueprint`);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;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/${siteId}/components`,req('POST',{name,block}));await Studio.loadReusables();toast('组件已保存到本站组件库')}catch(e){toast(e.message,true)}},
 insertReusable(id){const saved=reusables.find(x=>x.id===id);if(!saved)return;const copy=structuredClone(saved.block);const refreshIds=item=>{item.id=crypto.randomUUID().replace(/-/g,'').slice(0,10);if(item.type==='layout')(item.columns||[]).forEach(c=>(c.blocks||[]).forEach(refreshIds))};refreshIds(copy);blocks.push(copy);selected=blocks.length-1;Studio.modified();Studio.draw();},
 renderPalette(){let p=$('#palette');p.innerHTML=Object.entries(schema.blocks).map(([key,b])=>`<button onclick="Studio.add('${key}')"><span>${html(b.icon)}</span>${html(b.name)}</button>`).join('')},
 draw(){let list=$('#blockList');$('#blockCount').textContent=blocks.length+' 区块';list.innerHTML=blocks.map((b,i)=>`<div class="block-row ${selected===i?'selected':''}" draggable="true" data-index="${i}" ondragstart="Studio.drag(event,${i})" ondragover="event.preventDefault()" ondrop="Studio.drop(event,${i})" onclick="Studio.select(${i})"><div class="drag-handle" title="拖动排序">⠿</div><div class="block-icon">${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 title="复制" onclick="event.stopPropagation();Studio.duplicate(${i})">⧉</button><button title="删除" onclick="event.stopPropagation();Studio.remove(${i})">×</button></div></div>`).join('')||'<div class="no-selection">当前没有区块，点击下方按钮添加。</div>';Studio.inspector()},
 select(i){selected=i;Studio.draw()},
 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()},
 duplicate(i){let b=structuredClone(blocks[i]);b.id=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;let [b]=blocks.splice(src,1);blocks.splice(i,0,b);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();const row=$('#blockList').children[selected];if(row)row.querySelector('small').textContent=b.title||b.subtitle||b.type},
 jsonField(key,value){try{let data=JSON.parse(value);if(!Array.isArray(data))throw Error('必须为数组');Studio.fieldQuiet(key,data);$('#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];$('#blockTypeLabel').textContent=b?schema.blocks[b.type].name:'页面';if(!b){target.innerHTML='<div class="no-selection">请从左侧选择区块并编辑属性。</div>';return}const spec=schema.blocks[b.type];let out=`<div class="inspector-title"><h3>${html(spec.name)}</h3><label class="toggle"><input type="checkbox" ${b.visible!==false?'checked':''} onchange="Studio.field('visible',this.checked)">显示</label></div>`;
 for(const field of spec.fields){let value=b[field]??'',label=({title:'标题',subtitle:'副标题',description:'简介',image:'图片地址',body:'正文 HTML',button:'按钮文字',href:'跳转路径',source:'绑定内容类型',limit:'显示条数',columns:'每行列数',items:'重复条目',images:'画廊图片',image_side:'图片方向',align:'标题对齐',height:'间隔高度'})[field]||field;
   out+=`<div class="prop"><label>${html(label)}</label>`;
   if(field==='items'||field==='images')out+=`<textarea spellcheck="false" onchange="Studio.jsonField('${field}',this.value)">${html(JSON.stringify(value,null,2))}</textarea><span id="jsonError" class="prop-tip">请输入 JSON 数组，可编辑多个项目</span>`;
   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>';
 }
 if(b.type==='layout'){
   out+=`<div class="subheading">列内组件 · 无代码布局</div><p class="prop-tip">一行最多四列，拖动整个容器可改变行顺序。列在手机上自动变为单列。</p>`;
   b.columns.forEach((column,ci)=>{
     out+=`<div class="layout-editor-col"><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>`;
     column.blocks.forEach((child,j)=>{out+=`<div class="layout-child"><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}')">＋${html(schema.blocks[t].name)}</button>`).join('')}</div></div>`;
   });
   out+='<button class="ui-btn ghost" onclick="Studio.addColumn()">＋ 添加列</button>';
 }
 out+=`<div class="subheading">区块设计（按设备覆盖）</div><div class="prop"><label>背景颜色</label><input type="color" value="${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="${html(b.style?.padding??82)}" onchange="Studio.styleField('padding',Number(this.value))"></div><div class="prop"><label>平板上下间距（px）</label><input type="number" min="0" max="120" value="${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" ${b.style?.hide_mobile?'checked':''} onchange="Studio.styleField('hide_mobile',this.checked)"> 手机上隐藏区块</label></div><div class="prop"><label>上传区块图片</label><input type="file" accept="image/png,image/jpeg,image/webp,image/gif,image/avif" onchange="Studio.uploadImage(this.files[0])"></div>`;
 out+='<div style="display:flex;gap:8px;margin-bottom:22px"><button class="small-btn" onclick="Studio.duplicate('+selected+')">复制区块</button><button class="small-btn red-btn" onclick="Studio.remove('+selected+')">删除区块</button></div>';
 target.innerHTML=out;
 },
 modified(){dirty=true;$('#saveStatus').textContent='未保存更改';$('#saveStatus').classList.add('dirty');clearTimeout(timer);timer=setTimeout(()=>Studio.refreshPreview(),500)},
 async refreshPreview(){if(!pageId)return;try{let frame=$('#sitePreview');let doc=await api(`/api/sites/${siteId}/pages/${pageId}/editor-preview`,req('POST',{blocks,page_template:kind,layout_mode:layoutMode}));frame.srcdoc=doc}catch(e){toast('预览失败：'+e.message,true)}},
 device(type){$('#deviceFrame').className='device-frame '+(type==='desktop'?'':type);for(let name of ['Desktop','Tablet','Phone'])$('#device'+name).classList.toggle('on',name.toLowerCase()===type)},
 changeTemplateKind(t){kind=t;Studio.modified()},
 setLayoutMode(v){layoutMode=v;Studio.modified()},
 async resetPreset(){if(!confirm('使用预设区块将覆盖当前页面布局，是否继续？'))return;try{let result=await api(`/api/sites/${siteId}/pages/${pageId}/blueprint/preset`,req('POST',{page_template:kind}));blocks=result.blocks;selected=0;dirty=false;Studio.draw();Studio.refreshPreview();toast('已加载页面预设并保存')}catch(e){toast(e.message,true)}},
 async save(){try{const result=await api(`/api/sites/${siteId}/pages/${pageId}/blueprint`,req('PUT',{blocks,page_template:kind,layout_mode:layoutMode}));blocks=result.blocks;dirty=false;$('#saveStatus').textContent='已保存';$('#saveStatus').classList.remove('dirty');toast('页面蓝图已保存，重新构建后会生成正式静态页面')}catch(e){toast('保存失败：'+e.message,true)}},
 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 uploadImage(file){if(!file)return;try{const form=new FormData();form.append('file',file);let r=await api(`/api/sites/${siteId}/media`,{method:'POST',body:form});Studio.field('image',r.url);toast('图片已上传，保存页面后参与构建')}catch(e){toast(e.message,true)}},
 async buildSite(){if(dirty){await Studio.save();if(dirty)return}try{toast('开始构建网站……');let result=await api(`/api/sites/${siteId}/builds`,req('POST',{mirror_images:false}));toast('构建完成：'+result.pages+' 个页面');window.open(`/preview/${siteId}/${result.version}/`,'_blank','noopener')}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-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');
});