Trocou demo por blob na nuvem

X-Lovable-Edit-ID: edt-e0f35f63-9afa-4420-93c9-bbbf4e2eb083
Co-authored-by: Reifonas <211114984+Reifonas@users.noreply.github.com>

src/pages/Index.tsx

@@ -1,19 +1,18 @@
 import { useEffect, useRef, useCallback, useState } from 'react';
 import { useNavigate } from 'react-router-dom';
-import { Upload, Glasses, CheckCircle, XCircle, Loader2, Box, Package } from 'lucide-react';
+import { Upload, Glasses, CheckCircle, XCircle, Loader2, Box, Package, Cloud } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { useModelStore } from '@/stores/useModelStore';
 import { toast } from 'sonner';
-import { generateDemoBeamGLB } from '@/lib/generateDemoBeam';
 import { getSupportedExtension, convertToGLB, ACCEPTED_EXTENSIONS } from '@/lib/convertToGLB';
 import { convertIFCtoGLB } from '@/lib/convertIFC';
 
 const Index = () => {
   const navigate = useNavigate();
   const fileInputRef = useRef<HTMLInputElement>(null);
-  const [loadingDemo, setLoadingDemo] = useState(false);
   const [loadingDemoIFC, setLoadingDemoIFC] = useState(false);
   const [loadingDemoCotovelo, setLoadingDemoCotovelo] = useState(false);
+  const [loadingCloud, setLoadingCloud] = useState(false);
   const [converting, setConverting] = useState(false);
   const { model, setModel, xrSupported, setXrSupported } = useModelStore();
 
@@ -63,18 +62,41 @@ const Index = () => {
     }
   }, [setModel]);
 
-  const handleLoadDemo = useCallback(async () => {
-    setLoadingDemo(true);
+  const handleLoadCloud = useCallback(async () => {
+    const url = window.prompt('URL do modelo (GLB · OBJ · STL · IFC):', 'https://');
+    if (!url) return;
+    setLoadingCloud(true);
     try {
-      const { blob, fileName, fileSize } = await generateDemoBeamGLB();
-      const url = URL.createObjectURL(blob);
-      setModel({ fileName, fileSize, url });
-      toast.success('Modelo demo "IPE 200 — 1000mm" carregado!');
+      const fileName = url.split('/').pop()?.split('?')[0] || 'modelo-cloud';
+      const ext = getSupportedExtension(fileName);
+      if (!ext) {
+        toast.error('URL deve apontar para .GLB, .OBJ, .STL ou .IFC');
+        return;
+      }
+      const response = await fetch(url, { mode: 'cors' });
+      if (!response.ok) throw new Error(`HTTP ${response.status}`);
+      const buffer = await response.arrayBuffer();
+
+      let blob: Blob;
+      let outName = fileName;
+      let outSize = buffer.byteLength;
+      if (ext === 'glb') {
+        blob = new Blob([buffer], { type: 'model/gltf-binary' });
+      } else if (ext === 'ifc') {
+        const r = await convertIFCtoGLB(buffer, fileName);
+        blob = r.blob; outName = r.fileName; outSize = r.fileSize;
+      } else {
+        const r = await convertToGLB(buffer, ext, fileName);
+        blob = r.blob; outName = r.fileName; outSize = r.fileSize;
+      }
+      const blobUrl = URL.createObjectURL(blob);
+      setModel({ fileName: outName, fileSize: outSize, url: blobUrl });
+      toast.success(`"${outName}" carregado da nuvem (RAM)`);
     } catch (err) {
       console.error(err);
-      toast.error('Falha ao gerar modelo demo');
+      toast.error('Falha ao carregar da nuvem (verifique URL/CORS)');
     } finally {
-      setLoadingDemo(false);
+      setLoadingCloud(false);
     }
   }, [setModel]);
 
@@ -163,11 +185,11 @@ const Index = () => {
         <div className="grid grid-cols-3 gap-2">
           <Button
             variant="outline"
-            className="h-12 w-full gap-2 border-muted-foreground/30 text-muted-foreground hover:border-primary hover:text-primary transition-all text-xs"
-            onClick={handleLoadDemo}
-            disabled={loadingDemo}>
-            {loadingDemo ? <Loader2 className="h-4 w-4 animate-spin" /> : <Package className="h-4 w-4" />}
-            {loadingDemo ? 'Gerando…' : 'Demo — Viga IPE 200'}
+            className="h-12 w-full gap-2 border-primary/40 text-primary hover:border-primary hover:bg-primary/10 transition-all text-xs"
+            onClick={handleLoadCloud}
+            disabled={loadingCloud}>
+            {loadingCloud ? <Loader2 className="h-4 w-4 animate-spin" /> : <Cloud className="h-4 w-4" />}
+            {loadingCloud ? 'Baixando…' : 'Carregar da Nuvem'}
           </Button>
 
           <Button