fix: cors issue

cors.json

@@ -0,0 +1,8 @@
+[
+    {
+      "origin": ["https://cardex.xavidop.me", "http://localhost:3000", "http://localhost:9002"],
+      "method": ["GET", "HEAD"],
+      "maxAgeSeconds": 3600
+    }
+  ]
+  

src/app/api/download/route.ts

@@ -0,0 +1,57 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+export async function GET(request: NextRequest) {
+  try {
+    const url = request.nextUrl.searchParams.get('url');
+    
+    if (!url) {
+      return NextResponse.json(
+        { error: 'URL parameter is required' }, 
+        { status: 400 }
+      );
+    }
+
+    // Validate that the URL is from Firebase Storage (production or emulator)
+    const isFirebaseStorage = url.includes('firebasestorage.googleapis.com');
+    const isFirebaseEmulator = url.includes('localhost:9199') || url.includes('127.0.0.1:9199');
+    
+    if (!isFirebaseStorage && !isFirebaseEmulator) {
+      return NextResponse.json(
+        { error: 'Only Firebase Storage URLs are allowed' }, 
+        { status: 403 }
+      );
+    }
+
+    // Fetch the file from Firebase Storage
+    const response = await fetch(url, {
+      headers: {
+        'User-Agent': 'Cardex-Download-Proxy/1.0',
+      },
+    });
+
+    if (!response.ok) {
+      throw new Error(`Failed to fetch: ${response.status} ${response.statusText}`);
+    }
+
+    // Get the content type from the original response
+    const contentType = response.headers.get('content-type') || 'application/octet-stream';
+    
+    // Stream the response
+    return new NextResponse(response.body, {
+      headers: {
+        'Content-Type': contentType,
+        'Content-Disposition': 'attachment',
+        'Cache-Control': 'public, max-age=31536000',
+        'Access-Control-Allow-Origin': '*',
+        'Access-Control-Allow-Methods': 'GET',
+        'Access-Control-Allow-Headers': 'Content-Type',
+      },
+    });
+  } catch (error) {
+    console.error('Download proxy error:', error);
+    return NextResponse.json(
+      { error: 'Failed to download file' }, 
+      { status: 500 }
+    );
+  }
+}

src/utils/downloadUtils.ts

@@ -21,16 +21,35 @@ export async function downloadCardImage(imageUrl: string, cardName: string): Pro
       // Data URL - use directly
       link.href = imageUrl;
     } else if (imageUrl.startsWith('http')) {
-      // Firebase Storage URL or other HTTP URL - fetch and convert to blob URL
-      const response = await fetch(imageUrl);
-      const blob = await response.blob();
-      const blobUrl = URL.createObjectURL(blob);
-      link.href = blobUrl;
-      
-      // Clean up the blob URL after download
-      link.addEventListener('click', () => {
-        setTimeout(() => URL.revokeObjectURL(blobUrl), 100);
-      });
+      // Firebase Storage URL or other HTTP URL - use proxy approach to avoid CORS
+      try {
+        const proxyUrl = `/api/download?url=${encodeURIComponent(imageUrl)}`;
+        const response = await fetch(proxyUrl);
+        
+        if (!response.ok) {
+          throw new Error('Failed to fetch through proxy');
+        }
+        
+        const blob = await response.blob();
+        const blobUrl = URL.createObjectURL(blob);
+        link.href = blobUrl;
+        
+        // Clean up the blob URL after download
+        link.addEventListener('click', () => {
+          setTimeout(() => URL.revokeObjectURL(blobUrl), 100);
+        });
+      } catch (proxyError) {
+        console.error('Proxy download failed, trying direct fetch:', proxyError);
+        // Fallback to direct fetch (might still hit CORS)
+        const response = await fetch(imageUrl, { mode: 'cors' });
+        const blob = await response.blob();
+        const blobUrl = URL.createObjectURL(blob);
+        link.href = blobUrl;
+        
+        link.addEventListener('click', () => {
+          setTimeout(() => URL.revokeObjectURL(blobUrl), 100);
+        });
+      }
     } else {
       // Assume it's a base64 string without data URL prefix
       const dataUrl = `data:image/png;base64,${imageUrl}`;
@@ -84,16 +103,35 @@ export async function downloadCardVideo(videoUrl: string, cardName: string): Pro
       // Data URL - use directly
       link.href = videoUrl;
     } else if (videoUrl.startsWith('http')) {
-      // Firebase Storage URL or other HTTP URL - fetch and convert to blob URL
-      const response = await fetch(videoUrl);
-      const blob = await response.blob();
-      const blobUrl = URL.createObjectURL(blob);
-      link.href = blobUrl;
-      
-      // Clean up the blob URL after download
-      link.addEventListener('click', () => {
-        setTimeout(() => URL.revokeObjectURL(blobUrl), 100);
-      });
+      // Firebase Storage URL or other HTTP URL - use proxy approach to avoid CORS
+      try {
+        const proxyUrl = `/api/download?url=${encodeURIComponent(videoUrl)}`;
+        const response = await fetch(proxyUrl);
+        
+        if (!response.ok) {
+          throw new Error('Failed to fetch through proxy');
+        }
+        
+        const blob = await response.blob();
+        const blobUrl = URL.createObjectURL(blob);
+        link.href = blobUrl;
+        
+        // Clean up the blob URL after download
+        link.addEventListener('click', () => {
+          setTimeout(() => URL.revokeObjectURL(blobUrl), 100);
+        });
+      } catch (proxyError) {
+        console.error('Proxy download failed, trying direct fetch:', proxyError);
+        // Fallback to direct fetch (might still hit CORS)
+        const response = await fetch(videoUrl, { mode: 'cors' });
+        const blob = await response.blob();
+        const blobUrl = URL.createObjectURL(blob);
+        link.href = blobUrl;
+        
+        link.addEventListener('click', () => {
+          setTimeout(() => URL.revokeObjectURL(blobUrl), 100);
+        });
+      }
     } else {
       // Assume it's a base64 string without data URL prefix
       const dataUrl = `data:video/mp4;base64,${videoUrl}`;