consultoria-as
21959f1b37
Cambios implementados: 1. Lazy loading de imágenes: - catalog.js: loading="lazy" decoding="async" en part cards y detail panel - inventory.js: lazy loading en imagen de detalle de item 2. Minificación de assets: - scripts/minify-assets.sh: minifica JS (terser) y CSS para POS y Dashboard - 25 archivos .min.js + 5 .min.css generados en pos/static/ - 14 archivos .min.js + 8 .min.css generados en dashboard/ 3. Nginx auto-serve minified: - try_files $1.min.js antes de servir .js original - try_files $1.min.css antes de servir .css original - Transparente para los templates HTML (cero cambios en HTML) 4. Cache warming script: - scripts/warm_vehicle_cache.py: pobla Redis con vehicle info por batches - Mitiga DISTINCT ON + 4 JOINs sobre 2B filas - Corre en background, procesa ~1.5M parts Tests: 73/73 pasando
1 line
1.8 KiB
JavaScript
1 line
1.8 KiB
JavaScript
window.NexusPrinter=function(){"use strict";let e=null,t=null,r=null,n=null,a=null;async function i(){try{"usb"===a&&e&&await e.close(),"serial"===a&&(n&&(n.releaseLock(),n=null),r&&(await r.close(),r=null))}catch(e){}e=null,t=null,a=null,localStorage.removeItem("nexus_printer")}async function o(r){if(!a)return!1;try{if("usb"===a&&e&&null!==t){const n=512;for(let a=0;a<r.length;a+=n)await e.transferOut(t,r.slice(a,a+n));return!0}if("serial"===a&&n)return await n.write(r),!0}catch(e){console.error("[NexusPrinter] send error:",e),await i()}return!1}function l(){try{localStorage.setItem("nexus_printer",a||"")}catch(e){}}return{connect:async function(){if("usb"in navigator)try{e=await navigator.usb.requestDevice({filters:[]}),await e.open(),null===e.configuration&&await e.selectConfiguration(1);const r=e.configuration.interfaces[0];await e.claimInterface(r.interfaceNumber);const n=r.alternates[0].endpoints.find((e=>"out"===e.direction&&"bulk"===e.type));if(n)return t=n.endpointNumber,a="usb",l(),{ok:!0,type:"usb",name:e.productName||"USB Printer"}}catch(t){e=null}if("serial"in navigator)try{return r=await navigator.serial.requestPort(),await r.open({baudRate:9600}),n=r.writable.getWriter(),a="serial",l(),{ok:!0,type:"serial",name:"Serial Printer"}}catch(e){r=null,n=null}return{ok:!1,error:"No printer connected. Use a browser that supports WebUSB or Web Serial (Chrome/Edge)."}},disconnect:i,isConnected:function(){return null!==a},sendRaw:o,printSale:async function(e,t){t=t||80;const r=localStorage.getItem("pos_token"),n=await fetch("/pos/api/sales/"+e+"/print",{method:"POST",headers:{Authorization:"Bearer "+r,"Content-Type":"application/json"},body:JSON.stringify({printer_type:"escpos_raw",width:t})});if(!n.ok)return console.error("[NexusPrinter] backend error",n.status),!1;const a=await n.arrayBuffer();return o(new Uint8Array(a))}}}(); |