'use strict';
const $=s=>document.querySelector(s);
const state={lang:localStorage.getItem('ff-language')||'zh',theme:localStorage.getItem('ff-theme')||'system',page:location.hash.slice(1)||'dashboard',token:'',csrf:'',device:'living-room',settings:null,devices:[],templates:[],gallery:[],assets:[],blobs:[],tab:'cloud',preview:null,templatePreview:null,selectedTemplate:null,epoch:0};
function forgetLogin(){localStorage.removeItem('ff-login');state.token='';state.csrf='';state.settings=null;state.devices=[];state.templates=[];}
async function loadConnection(){state.settings=await api('/api/v1/settings');try{state.devices=await api('/api/v1/devices');}catch(error){state.devices=[];toast(error.message);}state.templates=await api('/api/v1/templates');state.device=state.devices[0]?.id||state.device;}
const icons={dashboard:'◫',gallery:'▧','photo-sources':'▣',upload:'↥',templates:'▦',automation:'◷',playlists:'▤',history:'↺',settings:'⚙'};
const t=k=>window.MESSAGES[state.lang][k]||k;
const esc=v=>String(v??'—').replace(/[&<>"']/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));
const fmt=v=>v?new Date(v).toLocaleString(state.lang==='zh'?'zh-CN':'en-GB',{timeZone:'Asia/Shanghai'}):'—';
const padTime=(hour,minute)=>`${String(hour).padStart(2,'0')}:${String(minute).padStart(2,'0')}`;
function normaliseSchedule(schedule){const copy={...schedule};if(copy.type!=='cron')return copy;const match=/^(\d{1,2})\s+(\d{1,2})\s+\*\s+\*\s+(\*|1-5|6,0|0,6)$/.exec(copy.cron||'');if(!match)return copy;const type=match[3]==='*'?'daily':match[3]==='1-5'?'weekdays':'weekends';return {type,time:padTime(match[2],match[1])};}
function scheduleTypeLabel(type){if(type!=='cron')return t(type);return state.lang==='zh'?'高级规则（Cron）':'Advanced rule (Cron)';}
function scheduleSummary(schedule){const value=normaliseSchedule(schedule);if(['daily','weekdays','weekends'].includes(value.type))return `${scheduleTypeLabel(value.type)} · ${value.time}（${state.lang==='zh'?'上海时间':'Shanghai time'}）`;if(value.type==='cron')return `${scheduleTypeLabel('cron')} · ${value.cron}`;return `${scheduleTypeLabel(value.type)} · ${fmt(value.at)}`;}
function scheduleHint(type){if(type==='cron')return state.lang==='zh'?'仅在需要特殊规则时使用；例如“每天 08:00”请选择“每天”。':'Use only for special rules; choose Daily for a regular time.';if(['date','temporary'].includes(type))return state.lang==='zh'?'选择一次性执行的日期和时间。':'Choose the date and time for this one-time task.';return state.lang==='zh'?'选择执行时间（上海时区）。':'Choose a time in Shanghai time.';}
const buttons=(id,text,primary=false)=>`<button type="button" id="${id}" class="${primary?'primary':''}">${t(text)}</button>`;
let toastTimer;
function toast(message){$('#toast').textContent=message;$('#toast').style.display='block';clearTimeout(toastTimer);toastTimer=setTimeout(()=>$('#toast').style.display='none',6000);}
async function api(path,options={}){
 const headers={...(state.csrf?{'X-CSRF-Token':state.csrf}:{}),...options.headers};
 if(options.body&&!(options.body instanceof FormData)){headers['Content-Type']='application/json';options.body=JSON.stringify(options.body);}
 const response=await fetch(path,{...options,headers});
 if(!response.ok){let error;try{error=(await response.json()).error;}catch{}if(response.status===401&&error?.code!=='OFFICIAL_AUTH_REQUIRED')forgetLogin();
 const e=new Error((error?.code||response.status)+': '+(error?.code&&t(error.code)!==error.code?t(error.code):(error?.message||t('error'))));e.code=error?.code;throw e;}
 if(response.status===204)return null;
 return options.binary?await response.blob():await response.json();
}
function bind(id,fn){const element=$('#'+id);if(element)element.onclick=async event=>{try{element.disabled=true;await fn(event);}catch(e){toast(e.message);}finally{element.disabled=false;}};}
function busy(fn){return async event=>{try{await fn(event);}catch(e){toast(e.message);}};}
function applyTheme(){const dark=state.theme==='dark'||(state.theme==='system'&&matchMedia('(prefers-color-scheme:dark)').matches);document.documentElement.dataset.theme=dark?'dark':'light';}
function shell(){document.documentElement.lang=state.lang==='zh'?'zh-CN':'en';$('#lang').textContent=state.lang==='zh'?'EN':'中文';$('#theme').title=t('theme');$('#nav').innerHTML=Object.entries(icons).map(([id,icon])=>`<button data-page="${id}" class="${id===state.page?'active':''}"><span class="nav-icon">${icon}</span><span>${t(id)}</span></button>`).join('');document.querySelectorAll('[data-page]').forEach(b=>b.onclick=()=>navigate(b.dataset.page));$('#page-title').textContent=t(state.page);$('#device').innerHTML=(state.devices.length?state.devices:[{id:state.device,name:state.device}]).map(d=>`<option value="${esc(d.id)}" ${d.id===state.device?'selected':''}>${esc(d.name)}</option>`).join('');}
function clearBlobs(){for(const url of state.blobs)URL.revokeObjectURL(url);state.blobs=[];}
async function blobImage(img,path){try{const blob=await api(path,{binary:true});if(!img.isConnected)return;const url=URL.createObjectURL(blob);state.blobs.push(url);img.src=url;}catch{img.alt=t('apiError');}}
function hydrateImages(){const observer=new IntersectionObserver(entries=>entries.forEach(entry=>{if(entry.isIntersecting){observer.unobserve(entry.target);blobImage(entry.target,entry.target.dataset.src);}}),{rootMargin:'100px'});document.querySelectorAll('img[data-src]').forEach(img=>observer.observe(img));}
function notice(){return state.settings?.mock?`<div class="notice">${t('mock')}</div>`:'';}
async function navigate(page=state.page){state.page=icons[page]?page:'dashboard';location.hash=state.page;shell();clearBlobs();state.epoch++;const epoch=state.epoch;
 if(!state.token){login();return;}
 $('#main').innerHTML='<div class="spinner"></div>';
 try{await views[state.page](epoch);if(epoch!==state.epoch)return;const enhance={dashboard:enhanceDashboard,templates:enhanceTemplates,gallery:enhanceGallery,settings:enhanceSettings,upload:enhanceUpload,history:enhanceHistory,automation:enhanceAutomation}[state.page];if(enhance)await enhance();guardDeviceButtons();}catch(e){if(epoch!==state.epoch)return;if(!state.token){shell();login();toast(e.message);return;}$('#main').innerHTML=`<div class="card empty"><strong>${t('apiError')}</strong><p>${esc(e.message)}</p>${buttons('retry','refresh')}</div>`;bind('retry',()=>navigate());}
}
function login(){ $('#main').innerHTML=`<div class="card" style="max-width:560px;margin:40px auto"><span class="badge">FRAME FLOW</span><h2 style="margin-top:20px">${t('connect')}</h2><p class="hint">${t('tokenHint')}</p><form id="login-form"><div class="field"><label for="username">${t('username')}</label><input id="username" required autocomplete="username"></div><div class="field"><label for="password">${t('password')}</label><input id="password" type="password" required autocomplete="current-password"></div><label class="check-row"><input id="remember-login" type="checkbox" checked>${t('rememberLogin')}</label><button class="primary" type="submit">${t('connect')}</button></form></div>`;$('#login-form').onsubmit=busy(async e=>{e.preventDefault();try{const account=await api('/api/v1/auth/login',{method:'POST',body:{username:$('#username').value.trim(),password:$('#password').value,remember:$('#remember-login').checked}});state.token=account.username;state.csrf=account.csrf_token;await loadConnection();await navigate();}catch(error){forgetLogin();shell();login();toast(error.message);}});}
// LAN HTTP is not a secure context; getRandomValues remains available there.
function clientUUID(){if(typeof crypto.randomUUID==='function')return crypto.randomUUID();const bytes=crypto.getRandomValues(new Uint8Array(16));bytes[6]=(bytes[6]&15)|64;bytes[8]=(bytes[8]&63)|128;const hex=Array.from(bytes,b=>b.toString(16).padStart(2,'0')).join('');return `${hex.slice(0,8)}-${hex.slice(8,12)}-${hex.slice(12,16)}-${hex.slice(16,20)}-${hex.slice(20)}`;}
async function accepted(path,payload){const key='web-'+clientUUID();const result=await api(path,{method:'POST',body:payload,headers:{'Idempotency-Key':key}});toast(t('accepted'));return result.operation_id;}
async function waitOperation(id){for(let n=0;n<120;n++){const operation=await api('/api/v1/operations/'+id);if(operation.status==='COMPLETED')return operation;if(['FAILED','UNKNOWN'].includes(operation.status))throw new Error(operation.status==='UNKNOWN'?t('unknown'):(operation.error?.message||t('error')));await new Promise(resolve=>setTimeout(resolve,2000));}throw new Error(t('syncing'));}
function showModal(html){$('#modal-content').innerHTML=html;$('#modal').showModal();bind('modal-cancel',()=>$('#modal').close());}
async function confirmDialog(message,fn){showModal(`<h2>${t('confirm')}</h2><p>${esc(message)}</p><div class="modal-actions">${buttons('modal-cancel','cancel')}${buttons('modal-confirm','confirm',true)}</div>`);bind('modal-confirm',async()=>{await fn();$('#modal').close();});}
function detail(label,value){return `<div><small>${t(label)}</small><strong>${esc(value)}</strong></div>`;}
function liveWriteAllowed(){return state.settings?.mock||state.settings?.write_enabled;}
function guardDeviceButtons(){if(!liveWriteAllowed())document.querySelectorAll('[data-show],'+(state.tab==='cloud'?'.image-card .danger,':'')+'#show-name,#display-template,#display-upload,#restore').forEach(b=>{b.disabled=true;b.title=t('readOnlyWarning');});}
async function templateEditor(selected){
 const raw=$('#template-data');const assets=await api('/api/v1/assets?source=uploaded&limit=200');let values=JSON.parse(raw.value);
 const panel=document.createElement('div');panel.id='template-fields';raw.before(panel);
 const labels={title:state.lang==='zh'?'标题':'Title',message:state.lang==='zh'?'正文':'Message',quote:state.lang==='zh'?'一句话':'Quote',author:state.lang==='zh'?'作者':'Author',events:t('eventsHelp'),date:t('date'),weekday:state.lang==='zh'?'星期（留空自动）':'Weekday (blank for automatic)',weather:state.lang==='zh'?'天气数据（JSON，可留空使用 Provider）':'Weather JSON (blank uses provider)'};
 const fields=[...new Set(['title',...selected.fields.filter(k=>Object.hasOwn(selected.defaults,k)),...(['daily-dashboard','calendar'].includes(selected.id)?['events','date','weekday']:selected.id==='daily-poetry'?['date']:[]),...(selected.id==='weather'||selected.id==='daily-dashboard'?['weather']:[]),...(['photo-text','daily-dashboard'].includes(selected.id)?['photo_id']:[])])];
 function invalidate(){state.templatePreview=null;$('#display-template').disabled=true;$('#template-preview').className='empty';$('#template-preview').textContent=t('previewHint');}
 function build(){panel.innerHTML=`<h3>${t('formEditor')}</h3>`+fields.map(k=>k==='photo_id'?`<div class="field"><label for="field-photo_id">${t('photo')}</label><select id="field-photo_id" data-field="photo_id"><option value="">${t('noPhoto')}</option>${values.photo_id&&!assets.some(a=>a.asset_id===values.photo_id)?`<option value="${esc(values.photo_id)}" selected disabled>${state.lang==='zh'?'已有选择不在上传照片列表中，请重新选择':'Previous selection is outside uploaded photos; choose again'}</option>`:''}${assets.map(a=>`<option value="${esc(a.asset_id)}" ${a.asset_id===values.photo_id?'selected':''}>${esc(a.name)}</option>`).join('')}</select><p class="hint">${state.lang==='zh'?'只列出上传的图片，不包含模板生成图。没有照片时，请使用下方文件选择器上传。':'Uploaded images only; generated templates are excluded. Upload a photo below if needed.'}</p></div>`:`<div class="field"><label for="field-${k}">${esc(labels[k]||t(k))}</label><textarea id="field-${k}" data-field="${k}" rows="${['events','message','weather','quote'].includes(k)?3:1}">${esc(k==='events'?(values[k]||[]).map(v=>typeof v==='object'?v.title:v).join('\n'):['weather','forecast'].includes(k)?(values[k]?JSON.stringify(values[k],null,2):''):values[k]||'')}</textarea></div>`).join('');panel.querySelectorAll('[data-field]').forEach(el=>el.oninput=()=>{try{const k=el.dataset.field;let v=el.value;if(k==='events')v=v.split('\n').filter(x=>x.trim());if(['weather','forecast'].includes(k))v=v.trim()?JSON.parse(v):null;if(v===null||v==='')delete values[k];else values[k]=v;raw.value=JSON.stringify(values,null,2);el.setCustomValidity('');invalidate();}catch{el.setCustomValidity(t('INVALID_REQUEST'));el.reportValidity();}});}
 build();const advanced=document.createElement('details');advanced.innerHTML=`<summary>${t('advanced')}</summary>`;raw.before(advanced);advanced.append(raw);raw.oninput=()=>{invalidate();try{values=JSON.parse(raw.value);if(!values||typeof values!=='object'||Array.isArray(values))throw Error();raw.setCustomValidity('');build();}catch{raw.setCustomValidity(t('INVALID_REQUEST'));}};
 const reset=document.createElement('button');reset.id='reset-template';reset.textContent=t('resetTemplate');$('#save-template').after(reset);bind('reset-template',()=>confirmDialog(t('resetConfirm'),async()=>{await api('/api/v1/templates/'+selected.id+'/config',{method:'DELETE'});await navigate();}));
 const save=$('#save-template');const oldSave=save.onclick;save.onclick=async e=>{if([...panel.querySelectorAll('textarea'),raw].some(x=>!x.checkValidity())){toast(t('INVALID_REQUEST'));return;}await oldSave(e);};
}
function accountSettings(){const section=$('#logout').parentElement;const form=document.createElement('form');form.id='password-form';form.innerHTML=`<h3>${t('changePassword')}</h3><div class="field"><label for="current-password">${t('currentPassword')}</label><input id="current-password" type="password" required autocomplete="current-password"></div><div class="field"><label for="new-password">${t('newPassword')}</label><input id="new-password" type="password" minlength="8" required autocomplete="new-password"></div><button type="submit">${t('changePassword')}</button>`;section.append(form);form.onsubmit=busy(async e=>{e.preventDefault();await api('/api/v1/auth/password',{method:'PUT',body:{current_password:$('#current-password').value,new_password:$('#new-password').value}});forgetLogin();shell();login();toast(t('passwordChanged'));});}
const views={
 'photo-sources':async()=>{ $('#main').innerHTML='';await photoSourcesPanel(); },
 async dashboard(epoch){const d=await api('/api/v1/devices/'+state.device);if(epoch!==state.epoch)return;const s=d.slideshow;$('#main').innerHTML=notice()+`${d.power.battery_percent!==null&&d.power.battery_percent<20?`<div class="notice warning">${t('lowBattery')}</div>`:''}<section class="card hero"><div class="hero-info"><span class="badge ${d.status==='offline'?'bad':''}">● ${t(d.status).toUpperCase()}</span><h2>${esc(d.name)}</h2><p>${esc(d.model)} · ${esc(d.model_code)} · ${d.display.width} × ${d.display.height}</p><div class="actions">${buttons('go-upload','upload',true)}${buttons('restore','restore')}${buttons('refresh-device','refresh')}</div><p class="hint" style="margin-top:28px">${t('refreshInterval')}</p></div><div class="frame-demo"><div class="mini-art"><div class="sun"></div></div><span class="frame-label">${t('testLabel')}</span></div></section><div class="stats">${[['battery',d.power.battery_percent===null?'—':d.power.battery_percent+'%'],['current',d.current_content.id??'—'],['sync',t(d.current_content.synced?'synced':'syncing')],['firmware',d.firmware]].map(([l,v])=>`<div class="card stat"><div class="label">${t(l)}</div><div class="value">${esc(v)}</div></div>`).join('')}</div><div class="columns"><section class="card"><h3>${t('device')}</h3><div class="detail-grid">${detail('heartbeat',fmt(d.last_seen_at))}${detail('rotation',d.display.rotation+'°')}${detail('timezone',d.timezone)}${detail('coverId',d.current_content.cover_id??'—')}${detail('storage',d.storage_used_bytes===null?'—':(d.storage_used_bytes/1024/1024).toFixed(1)+' MiB')}${detail('model',t(d.model_verified?'modelVerified':'modelConfigured'))}</div></section><section class="card"><h3>${t('cloudRotation')}</h3><div class="detail-grid">${detail('mode',s.mode?t(s.mode):'—')}${detail('interval',s.interval_minutes==null?'—':s.interval_minutes+' '+t('minutes'))}</div><p class="hint">${t('rotationNotice')}</p><a href="#playlists" id="go-playlists">${t('playlists')} →</a></section></div>`;bind('go-upload',()=>navigate('upload'));bind('refresh-device',async()=>{await api('/api/v1/devices/'+state.device+'?refresh=true');await navigate();});$('#restore').disabled=!d.can_restore;bind('restore',()=>accepted('/api/v1/devices/'+state.device+'/restore',{}));$('#go-playlists').onclick=e=>{e.preventDefault();navigate('playlists');};},
 async gallery(epoch){let items=state.tab==='cloud'?await api('/api/v1/devices/'+state.device+'/images'):await api('/api/v1/assets?limit=200&offset='+(state.assetOffset||0)+'&origin='+encodeURIComponent(state.assetOrigin||'all')+(state.assetJob?'&job_id='+encodeURIComponent(state.assetJob):''));if(epoch!==state.epoch)return;state.gallery=items;$('#main').innerHTML=notice()+`<div class="section-heading"><div class="tabs"><button id="cloud-tab" class="${state.tab==='cloud'?'active':''}">${t('cloud')}</button><button id="local-tab" class="${state.tab==='local'?'active':''}">${t('local')}</button></div><div class="actions">${buttons('gallery-refresh','refresh')}${state.tab==='cloud'?buttons('show-name','displayByName'):''}${buttons('gallery-upload','upload',true)}</div></div>${state.tab==='local'?`<div class="notice">${t('uploadNotice')}</div>`:''}${items.length?`<div class="gallery">${items.map((x,i)=>`<article class="card image-card"><img class="thumb" alt="${esc(x.name)}" data-src="${esc(x.url+(state.tab==='cloud'?'?thumbnail=true':''))}"><h3 title="${esc(x.name)}">${esc(x.name)}</h3><small>${state.tab==='cloud'?'#'+x.image_id:'LOCAL'} · ${esc(fmt(x.created_at))}</small><div class="actions"><button class="primary" data-show="${i}" ${x.current?'disabled':''}>${t(x.current?'current':'display')}</button><button data-original="${i}">${t('original')}</button><button class="danger" data-delete="${i}">${t('delete')}</button></div></article>`).join('')}</div>`:`<div class="card empty"><strong>${t('noImages')}</strong>${t('emptyHint')}</div>`}`;bind('cloud-tab',()=>{state.tab='cloud';return navigate();});bind('local-tab',()=>{state.tab='local';return navigate();});bind('gallery-refresh',()=>navigate());bind('gallery-upload',()=>navigate('upload'));bind('show-name',()=>{showModal(`<h2>${t('displayByName')}</h2><div class="field"><label for="image-name">${t('name')}</label><input id="image-name" maxlength="120"></div><div class="modal-actions">${buttons('modal-cancel','cancel')}${buttons('show-name-confirm','display',true)}</div>`);bind('show-name-confirm',async()=>{const name=$('#image-name').value;$('#modal').close();displayDialog({type:'image',image_name:name});});});hydrateImages();document.querySelectorAll('[data-show]').forEach(b=>b.onclick=busy(()=>{const x=items[b.dataset.show];if(x.current)return;return displayDialog(state.tab==='cloud'?{type:'image',image_id:x.image_id}:{type:'image',asset_id:x.asset_id});}));document.querySelectorAll('[data-original]').forEach(b=>b.onclick=busy(async()=>{const x=items[b.dataset.original];showModal(`<h2>${esc(x.name)}</h2><img id="original-image" class="preview" alt="${esc(x.name)}"><div class="modal-actions">${buttons('modal-cancel','cancel')}</div>`);await blobImage($('#original-image'),x.url);}));document.querySelectorAll('[data-delete]').forEach(b=>b.onclick=()=>{const x=items[b.dataset.delete];confirmDialog(x.current?t('deleteCurrent'):t('deleteConfirm'),async()=>{if(state.tab==='local'){await api('/api/v1/assets/'+x.asset_id,{method:'DELETE'});}else{const result=await api(`/api/v1/devices/${state.device}/images/${x.image_id}?confirm_current=${x.current}`,{method:'DELETE',headers:{'Idempotency-Key':'web-'+clientUUID()}});await waitOperation(result.operation_id);}await navigate();});});},
 async upload(){state.preview=null;$('#main').innerHTML=notice()+`<div class="notice">${t('uploadNotice')}</div><div class="columns"><section class="card"><h2>${t('upload')}</h2><div class="dropzone"><strong>${t('selectFile')}</strong><p class="hint">${t('uploadHint')}</p><input id="file" type="file" accept="image/jpeg,image/png,image/webp" aria-label="${t('selectFile')}"></div><div class="form-grid" style="margin-top:24px"><div class="field"><label for="fit">${t('mode')}</label><select id="fit">${['contain','cover','smart'].map(x=>`<option value="${x}">${t(x)}</option>`).join('')}</select></div><div class="field"><label for="profile">${t('profile')}</label><select id="profile">${['color','grayscale'].map(x=>`<option value="${x}">${t(x)}</option>`).join('')}</select></div></div>${buttons('make-preview','preview',true)}<p class="hint">${t('previewHint')}</p></section><section class="card"><h3>${t('preview')}</h3><div id="preview-box" class="empty">${t('previewHint')}</div><div class="actions" style="margin-top:18px"><button id="save-local" disabled>${t('staging')}</button><button id="display-upload" class="primary" disabled>${t('display')}</button></div></section></div>`;bind('make-preview',async()=>{const file=$('#file').files[0];if(!file)throw new Error(t('selectFile'));const form=new FormData();form.append('file',file);form.append('fit',$('#fit').value);form.append('profile',$('#profile').value);state.preview=await api('/api/v1/preview',{method:'POST',body:form});$('#preview-box').className='';$('#preview-box').innerHTML='<img id="upload-preview" class="preview" alt="Preview">';await blobImage($('#upload-preview'),state.preview.url);$('#save-local').disabled=false;$('#display-upload').disabled=!liveWriteAllowed();});for(const id of ['file','fit','profile'])$('#'+id).onchange=()=>{state.preview=null;$('#save-local').disabled=true;$('#display-upload').disabled=true;};bind('save-local',async()=>{const id=await accepted('/api/v1/devices/'+state.device+'/upload',{type:'image',asset_id:state.preview.asset_id});await waitOperation(id);state.tab='local';return navigate('gallery');});bind('display-upload',()=>displayDialog({type:'image',asset_id:state.preview.asset_id}));},
 async templates(){state.templates=await api('/api/v1/templates');const selected=state.templates.find(x=>x.id===state.selectedTemplate)||state.templates[0];state.selectedTemplate=selected.id;if(state.pendingTemplateData?.template===selected.id){selected.defaults=state.pendingTemplateData.data;state.initialProfile=state.pendingTemplateData.profile;state.pendingTemplateData=null;}state.templatePreview=null;$('#main').innerHTML=notice()+`<div class="notice">${t('templateHint')}</div><div class="template-grid">${state.templates.map((x,i)=>`<div class="card template-card ${x.id===selected.id?'selected':''}" role="button" tabindex="0" data-template="${x.id}"><span>${{'daily-poetry':'詩','calendar':'▦','daily-dashboard':'☀','photo-text':'▣','quote':'❝','system-alert':'◒','weather':'☁'}[x.id]||'▦'}</span><div><h3>${esc(x.name.split(' / ')[state.lang==='zh'?1:0]||x.name)}</h3><small>1200 × 1600 · ${esc(x.id)}</small></div></div>`).join('')}</div><div class="columns"><section class="card"><h3>${t('templateData')}</h3><textarea id="template-data" aria-label="${t('templateData')}">${esc(JSON.stringify(selected.defaults,null,2))}</textarea><div class="field" style="margin-top:16px"><label for="template-profile">${t('profile')}</label><select id="template-profile"><option value="color">${t('color')}</option><option value="grayscale">${t('grayscale')}</option></select></div><div class="actions">${buttons('render-template','render',true)}${buttons('save-template','saveTemplate')}</div></section><section class="card"><h3>${t('preview')}</h3><div id="template-preview" class="empty">${t('previewHint')}</div><button id="display-template" class="primary" style="margin-top:18px" disabled>${t('display')}</button></section></div>`;document.querySelectorAll('[data-template]').forEach(b=>{b.onclick=()=>{state.selectedTemplate=b.dataset.template;navigate();};b.onkeydown=e=>{if(e.key==='Enter')b.click();};});bind('render-template',async()=>{const content={type:'template',template:selected.id,data:JSON.parse($('#template-data').value),profile:$('#template-profile').value};if([...document.querySelectorAll('#template-fields textarea'),$('#template-data')].some(x=>!x.checkValidity())){toast(t('INVALID_REQUEST'));return;}const id=await accepted('/api/v1/render',content);$('#template-preview').textContent=t('previewLoading');const op=await waitOperation(id);state.templatePreview=op.result.asset_id;$('#template-preview').className='';$('#template-preview').innerHTML='<img id="template-image" class="preview" alt="Template preview">';await blobImage($('#template-image'),op.result.url);$('#display-template').disabled=!liveWriteAllowed();});bind('save-template',async()=>{await api('/api/v1/templates/'+selected.id+'/config',{method:'PUT',body:{data:JSON.parse($('#template-data').value)}});toast(t('done'));});$('#template-data').oninput=()=>$('#display-template').disabled=true;$('#template-profile').onchange=()=>$('#display-template').disabled=true;bind('display-template',()=>displayDialog({type:'image',asset_id:state.templatePreview}));await templateEditor(selected);if(state.initialProfile){$('#template-profile').value=state.initialProfile;state.initialProfile=null;}},
 async automation(epoch){const jobs=await api('/api/v1/jobs');if(epoch!==state.epoch)return;$('#main').innerHTML=notice()+`<div class="section-heading"><p class="hint">Asia/Shanghai · ${t('automation')}</p>${buttons('new-job','newJob',true)}</div><div class="card">${jobs.length?`<div class="table-wrap"><table><thead><tr>${['name','schedule','status','nextRun','lastRun','result','action'].map(x=>`<th>${t(x)}</th>`).join('')}</tr></thead><tbody>${jobs.map((j,i)=>`<tr><td><strong>${esc(j.name)}</strong><br><small>${esc(j.device_id)}</small></td><td>${t(j.schedule.type)}<br>${esc(j.schedule.time||j.schedule.cron||fmt(j.schedule.at))}</td><td><span class="badge">${t(j.enabled?'enabled':'disabled')}</span></td><td>${fmt(j.next_run)}</td><td>${fmt(j.last_run)}</td><td><code>${esc(j.last_result)}</code></td><td><div class="row-actions"><button data-job-edit="${i}">${t('edit')}</button><button data-job-toggle="${i}">${t(j.enabled?'disabled':'enabled')}</button><button class="danger" data-job-delete="${i}">${t('remove')}</button></div></td></tr>`).join('')}</tbody></table></div>`:`<div class="empty"><strong>${t('noTasks')}</strong></div>`}</div>`;bind('new-job',()=>jobEditor());document.querySelectorAll('[data-job-edit]').forEach(b=>b.onclick=()=>jobEditor(jobs[b.dataset.jobEdit]));document.querySelectorAll('[data-job-toggle]').forEach(b=>b.onclick=busy(async()=>{const j=jobs[b.dataset.jobToggle];await api('/api/v1/jobs/'+j.id,{method:'PUT',body:jobPayload(j,{enabled:!j.enabled})});await navigate();}));document.querySelectorAll('[data-job-delete]').forEach(b=>b.onclick=()=>confirmDialog(t('removeConfirm'),async()=>{await api('/api/v1/jobs/'+jobs[b.dataset.jobDelete].id,{method:'DELETE'});await navigate();}));},
 async playlists(epoch){const playlists=await api('/api/v1/playlists');if(epoch!==state.epoch)return;$('#main').innerHTML=notice()+`<div class="notice">${t('playlistNotice')}</div><div class="section-heading"><h2>${t('playlists')}</h2>${buttons('new-playlist','newPlaylist',true)}</div><div class="gallery">${playlists.map((p,i)=>`<section class="card"><span class="badge">${t(p.enabled?'enabled':'disabled')}</span><h3 style="margin-top:16px">${esc(p.name)}</h3><p class="hint">${p.image_ids.length} ${t('count')} · ${p.interval_minutes} ${t('minutes')} · ${t(p.mode)}</p><p><code>${esc(p.image_ids.join(' → '))}</code></p><small>${t('lastScheduled')}: ${p.position>=0?esc(p.image_ids[p.position]):'—'}</small><div class="actions" style="margin-top:16px"><button data-pl-edit="${i}">${t('edit')}</button><button class="danger" data-pl-delete="${i}">${t('remove')}</button></div></section>`).join('')||`<div class="card empty"><strong>${t('noTasks')}</strong></div>`}</div>`;bind('new-playlist',()=>playlistEditor());document.querySelectorAll('[data-pl-edit]').forEach(b=>b.onclick=()=>playlistEditor(playlists[b.dataset.plEdit]));document.querySelectorAll('[data-pl-delete]').forEach(b=>b.onclick=()=>confirmDialog(t('removeConfirm'),async()=>{await api('/api/v1/playlists/'+playlists[b.dataset.plDelete].id,{method:'DELETE'});await navigate();}));},
 async history(epoch){const ops=await api('/api/v1/operations');if(epoch!==state.epoch)return;$('#main').innerHTML=`<div class="section-heading"><h2>${t('history')}</h2>${buttons('history-refresh','refresh')}</div>${ops.some(x=>x.status==='UNKNOWN')?`<div class="notice warning">${t('unknown')}</div>`:''}<div class="card table-wrap">${ops.length?`<table><thead><tr>${['created','action','status','result','client','requestId'].map(x=>`<th>${t(x)}</th>`).join('')}</tr></thead><tbody>${ops.map((o,i)=>`<tr><td>${fmt(o.created_at)}</td><td>${esc(o.action)}<br><small>${esc(o.device_id)}</small></td><td><span class="badge ${['FAILED','UNKNOWN'].includes(o.status)?'bad':''}">${t(o.status)}</span>${o.status==='UNKNOWN'?`<div><button data-reconcile="${i}">${t('reconcile')}</button></div>`:''}</td><td>${esc(o.result?.image_id||o.result?.asset_id||o.error?.code||'—')}</td><td>${esc(o.client_id)}</td><td><code>${esc(o.request_id)}<br>${esc(o.operation_id)}</code></td></tr>`).join('')}</tbody></table>`:`<div class="empty">${t('noHistory')}</div>`}</div>`;bind('history-refresh',()=>navigate());document.querySelectorAll('[data-reconcile]').forEach(b=>b.onclick=busy(async()=>{const o=ops[b.dataset.reconcile];const r=await api('/api/v1/operations/'+o.operation_id+'/reconcile',{method:'POST',body:{acknowledge:false}});showModal(`<h2>${t('reconcile')}</h2><p>${t('current')}: ${esc(r.current_image_id)}</p><p>${t('result')}: ${esc(r.expected_image_id)}</p><p class="hint">${t('unknown')}</p><div class="modal-actions">${buttons('modal-cancel','cancel')}${r.resolved?'':buttons('acknowledge','acknowledge')}</div>`);bind('acknowledge',async()=>{await api('/api/v1/operations/'+o.operation_id+'/reconcile',{method:'POST',body:{acknowledge:true}});$('#modal').close();await navigate();});}));},
 async settings(){state.settings=await api('/api/v1/settings');const s=state.settings;$('#main').innerHTML=notice()+`<div class="columns"><section class="card"><h3>${t('settings')}</h3><div class="field"><label for="theme-select">${t('theme')}</label><select id="theme-select">${['system','light','dark'].map(x=>`<option value="${x}" ${state.theme===x?'selected':''}>${t(x==='system'?'systemTheme':x)}</option>`).join('')}</select></div><div class="field"><label for="language-select">${t('language')}</label><select id="language-select"><option value="zh" ${state.lang==='zh'?'selected':''}>简体中文</option><option value="en" ${state.lang==='en'?'selected':''}>English</option></select></div><p class="hint">${t('tokenHint')}</p>${buttons('logout','logout')}</section><section class="card"><h3>${t('auth')}</h3><div class="detail-grid">${detail('version',s.version)}${detail('writeProtection',t(!s.write_enabled?'yes':'no'))}${detail('keyConfigured',t(s.api_key_configured?'yes':'no'))}${detail('timezone',s.timezone)}</div><p class="hint">${t('refreshInterval')}</p><a href="/docs" target="_blank" rel="noopener">${t('apiDocs')} →</a><p class="hint">GET /openapi.json · /api/v1</p></section></div>`;$('#theme-select').onchange=()=>{state.theme=$('#theme-select').value;localStorage.setItem('ff-theme',state.theme);applyTheme();};$('#language-select').onchange=()=>{state.lang=$('#language-select').value;localStorage.setItem('ff-language',state.lang);navigate();};bind('logout',async()=>{await api('/api/v1/auth/logout',{method:'POST'});forgetLogin();shell();login();});accountSettings();}
};
function jobPayload(j,changes={}){return {name:j.name,enabled:j.enabled,device_id:j.device_id,schedule:j.schedule,source:j.source,display_duration:j.display_duration,restore_previous:j.restore_previous,priority:j.priority,cleanup_unstarred:j.cleanup_unstarred||false,...changes};}
async function jobEditor(job){const j=job||{name:'',enabled:true,device_id:state.device,schedule:{type:'daily',time:'07:00'},source:{type:'template',template:'daily-dashboard',data:{}},display_duration:5400,restore_previous:true,priority:50};showModal(`<h2>${t(job?'edit':'newJob')}</h2><form id="job-form"><div class="field"><label for="job-name">${t('name')}</label><input id="job-name" required maxlength="120" value="${esc(j.name)}"></div><div class="form-grid"><div class="field"><label for="job-schedule">${t('schedule')}</label><select id="job-schedule">${['daily','weekdays','weekends','cron','date','temporary'].map(x=>`<option ${j.schedule.type===x?'selected':''} value="${x}">${t(x)}</option>`).join('')}</select></div><div class="field"><label id="schedule-label" for="schedule-value">${t('time')}</label><input id="schedule-value" required value="${esc(j.schedule.time||j.schedule.cron||(j.schedule.at?j.schedule.at.slice(0,16):'07:00'))}"></div></div><div class="field"><label for="job-source">${t('source')} (JSON)</label><textarea id="job-source">${esc(JSON.stringify(j.source,null,2))}</textarea></div><div class="form-grid"><div class="field"><label for="job-duration">${t('duration')}</label><input id="job-duration" type="number" min="0" max="604800" value="${j.display_duration}"></div><div class="field"><label for="job-priority">${t('priority')}</label><input id="job-priority" type="number" min="0" max="100" value="${j.priority}"></div></div><label class="check-row"><input type="checkbox" id="job-enabled" ${j.enabled?'checked':''}>${t('enabled')}</label><label class="check-row"><input type="checkbox" id="job-restore" ${j.restore_previous?'checked':''}>${t('restoreAfter')}</label><div class="modal-actions">${buttons('modal-cancel','cancel')}<button type="submit" class="primary">${t('save')}</button></div></form>`);const source=$('#job-source');const choose=document.createElement('div');choose.className='field';choose.innerHTML=`<label for="job-template">${t('template')}</label><select id="job-template"><option value="">${t('advanced')}</option>${state.templates.map(x=>`<option value="${esc(x.id)}" ${j.source.template===x.id?'selected':''}>${esc(x.name)}</option>`).join('')}</select>`;source.parentElement.before(choose);$('#job-template').onchange=()=>{const id=$('#job-template').value;if(id)source.value=JSON.stringify({type:'template',template:id,data:{}},null,2);};function update(){const type=$('#job-schedule').value;$('#schedule-label').textContent=t(type==='cron'?'cron':['date','temporary'].includes(type)?'at':'time');$('#schedule-value').type=type==='cron'?'text':['date','temporary'].includes(type)?'datetime-local':'time';}$('#job-schedule').onchange=()=>{update();$('#schedule-value').value='';};update();$('#job-form').onsubmit=busy(async e=>{e.preventDefault();const type=$('#job-schedule').value,value=$('#schedule-value').value;const schedule={type};if(type==='cron')schedule.cron=value;else if(['date','temporary'].includes(type))schedule.at=value+':00+08:00';else schedule.time=value;const payload=jobPayload(j,{name:$('#job-name').value,schedule,source:JSON.parse($('#job-source').value),display_duration:Number($('#job-duration').value),priority:Number($('#job-priority').value),restore_previous:$('#job-restore').checked,cleanup_unstarred:false,enabled:$('#job-enabled').checked});await api('/api/v1/jobs'+(job?'/'+job.id:''),{method:job?'PUT':'POST',body:payload});$('#modal').close();await navigate();});await jobSourceEditor(j);}
async function playlistEditor(p){p=p||{name:'',image_ids:[],interval_minutes:60,mode:'queue',enabled:false};showModal(`<h2>${t('playlists')}</h2><form id="playlist-form"><div class="field"><label for="playlist-name">${t('name')}</label><input id="playlist-name" required maxlength="120" value="${esc(p.name)}"></div><div class="field"><label for="playlist-images">${t('imageIds')}</label><input id="playlist-images" required value="${esc(p.image_ids.join(','))}" placeholder="1,2,3"></div><div class="form-grid"><div class="field"><label for="playlist-interval">${t('interval')}</label><input id="playlist-interval" type="number" min="5" max="10080" value="${p.interval_minutes}"></div><div class="field"><label for="playlist-mode">${t('mode')}</label><select id="playlist-mode"><option value="queue" ${p.mode==='queue'?'selected':''}>${t('queue')}</option><option value="random" ${p.mode==='random'?'selected':''}>${t('random')}</option></select></div></div><label class="check-row"><input id="playlist-enabled" type="checkbox" ${p.enabled?'checked':''}>${t('enabled')}</label><div class="modal-actions">${buttons('modal-cancel','cancel')}<button type="submit" class="primary">${t('save')}</button></div></form>`);$('#playlist-form').onsubmit=busy(async e=>{e.preventDefault();await api('/api/v1/playlists'+(p.id?'/'+p.id:''),{method:p.id?'PUT':'POST',body:{name:$('#playlist-name').value,device_id:p.device_id||state.device,image_ids:$('#playlist-images').value.split(',').map(x=>Number(x.trim())),interval_minutes:Number($('#playlist-interval').value),mode:$('#playlist-mode').value,enabled:$('#playlist-enabled').checked}});$('#modal').close();await navigate();});await playlistImagePicker(p);}
$('#lang').onclick=()=>{state.lang=state.lang==='zh'?'en':'zh';localStorage.setItem('ff-language',state.lang);navigate();};$('#theme').onclick=()=>{state.theme=document.documentElement.dataset.theme==='dark'?'light':'dark';localStorage.setItem('ff-theme',state.theme);applyTheme();};$('#device').onchange=()=>{state.device=$('#device').value;navigate();};window.addEventListener('hashchange',()=>{const page=location.hash.slice(1);if(page!==state.page)navigate(page);});matchMedia('(prefers-color-scheme:dark)').addEventListener('change',applyTheme);
applyTheme();localStorage.removeItem('ff-login');(async()=>{try{const account=await api('/api/v1/auth/me');state.token=account.username;state.csrf=account.csrf_token;await loadConnection();}catch{forgetLogin();}await navigate();})();api('/api/v1/version').then(v=>$('#footer').innerHTML=`<span>Pigway Frame Flow · ${t('footer')}</span><span>v${esc(v.version)} · ${esc(v.commit.slice(0,8))} · ${esc(v.build_time)}</span>`).catch(()=>{});
setInterval(()=>{if(state.token&&state.page==='dashboard'&&!$('#modal').open)navigate();},60000);

// Keep Cron available for exceptional schedules, but make ordinary schedules form-based.
async function jobEditor(job){
 const base={name:'',enabled:true,device_id:state.device,schedule:{type:'daily',time:'07:00'},source:{type:'template',template:'daily-dashboard',data:{}},display_duration:5400,restore_previous:true,priority:50};
 const original=job||base;
 const j={...base,...original,schedule:normaliseSchedule(original.schedule||base.schedule)};
 const scheduleValue=j.schedule.time||j.schedule.cron||(j.schedule.at?j.schedule.at.slice(0,16):'07:00');
 showModal(`<h2>${t(job?'edit':'newJob')}</h2><form id="job-form"><div class="field"><label for="job-name">${t('name')}</label><input id="job-name" required maxlength="120" value="${esc(j.name)}"></div><div class="form-grid"><div class="field"><label for="job-schedule">${t('schedule')}</label><select id="job-schedule">${['daily','weekdays','weekends','date','temporary','cron'].map(type=>`<option value="${type}" ${j.schedule.type===type?'selected':''}>${scheduleTypeLabel(type)}</option>`).join('')}</select></div><div class="field"><label id="schedule-label" for="schedule-value">${t('time')}</label><input id="schedule-value" required value="${esc(scheduleValue)}"></div></div><p class="hint" id="schedule-hint"></p><div class="field"><label for="job-source">${t('source')} (JSON)</label><textarea id="job-source">${esc(JSON.stringify(j.source,null,2))}</textarea></div><div class="form-grid"><div class="field"><label for="job-duration">${t('duration')}</label><input id="job-duration" type="number" min="0" max="604800" value="${j.display_duration}"></div><div class="field"><label for="job-priority">${t('priority')}</label><input id="job-priority" type="number" min="0" max="100" value="${j.priority}"></div></div><label class="check-row"><input type="checkbox" id="job-enabled" ${j.enabled?'checked':''}>${t('enabled')}</label><label class="check-row"><input type="checkbox" id="job-restore" ${j.restore_previous?'checked':''}>${t('restoreAfter')}</label><p class="hint">${t('cloudKeepLatest')}</p><div class="modal-actions">${buttons('modal-cancel','cancel')}<button type="submit" class="primary">${t('save')}</button></div></form>`);
 const source=$('#job-source');
 const choose=document.createElement('div');
 choose.className='field';
 choose.innerHTML=`<label for="job-template">${t('template')}</label><select id="job-template"><option value="">${t('advanced')}</option>${state.templates.map(template=>`<option value="${esc(template.id)}" ${j.source.template===template.id?'selected':''}>${esc(template.name)}</option>`).join('')}</select>`;
 source.parentElement.before(choose);
 $('#job-template').onchange=()=>{const id=$('#job-template').value;if(id)source.value=JSON.stringify({type:'template',template:id,data:{}},null,2);};
 function updateScheduleField(){const type=$('#job-schedule').value;$('#schedule-label').textContent=type==='cron'?scheduleTypeLabel(type):t(['date','temporary'].includes(type)?'at':'time');$('#schedule-value').type=type==='cron'?'text':['date','temporary'].includes(type)?'datetime-local':'time';$('#schedule-hint').textContent=scheduleHint(type);}
 $('#job-schedule').onchange=()=>{updateScheduleField();$('#schedule-value').value='';};
 updateScheduleField();
 $('#job-form').onsubmit=busy(async event=>{event.preventDefault();const type=$('#job-schedule').value;const value=$('#schedule-value').value;const schedule={type};if(type==='cron')schedule.cron=value;else if(['date','temporary'].includes(type))schedule.at=value+':00+08:00';else schedule.time=value;const payload=jobPayload(j,{name:$('#job-name').value,schedule,source:JSON.parse(source.value),display_duration:Number($('#job-duration').value),priority:Number($('#job-priority').value),restore_previous:$('#job-restore').checked,cleanup_unstarred:false,enabled:$('#job-enabled').checked});await api('/api/v1/jobs'+(job?'/'+job.id:''),{method:job?'PUT':'POST',body:payload});$('#modal').close();await navigate();});
 await jobSourceEditor(j);
}

views.automation=async epoch=>{
 const jobs=await api('/api/v1/jobs');
 if(epoch!==state.epoch)return;
 $('#main').innerHTML=notice()+`<div class="section-heading"><p class="hint">Asia/Shanghai · ${t('automation')}</p>${buttons('new-job','newJob',true)}</div><div class="card">${jobs.length?`<div class="table-wrap"><table><thead><tr>${['name','schedule','status','nextRun','lastRun','result','action'].map(key=>`<th>${t(key)}</th>`).join('')}</tr></thead><tbody>${jobs.map((job,index)=>`<tr><td><strong>${esc(job.name)}</strong><br><small>${esc(job.device_id)}</small></td><td>${esc(scheduleSummary(job.schedule))}</td><td><span class="badge">${t(job.enabled?'enabled':'disabled')}</span></td><td>${fmt(job.next_run)}</td><td>${fmt(job.last_run)}</td><td><code>${esc(job.last_result)}</code></td><td><div class="row-actions"><button data-job-edit="${index}">${t('edit')}</button><button data-job-toggle="${index}">${t(job.enabled?'disabled':'enabled')}</button><button class="danger" data-job-delete="${index}">${t('remove')}</button></div></td></tr>`).join('')}</tbody></table></div>`:`<div class="empty"><strong>${t('noTasks')}</strong></div>`}</div>`;
 bind('new-job',()=>jobEditor());
 document.querySelectorAll('[data-job-edit]').forEach(button=>button.onclick=()=>jobEditor(jobs[button.dataset.jobEdit]));
 document.querySelectorAll('[data-job-toggle]').forEach(button=>button.onclick=busy(async()=>{const job=jobs[button.dataset.jobToggle];await api('/api/v1/jobs/'+job.id,{method:'PUT',body:jobPayload(job,{enabled:!job.enabled})});await navigate();}));
 document.querySelectorAll('[data-job-delete]').forEach(button=>button.onclick=()=>confirmDialog(t('removeConfirm'),async()=>{await api('/api/v1/jobs/'+jobs[button.dataset.jobDelete].id,{method:'DELETE'});await navigate();}));
};