Implement path-based downloads with blob redirect system

- Add fctdrive stat command to get blob IDs from paths
- Add Drive_stat function to drive_server.ts for backend integration
- Create /download/[...path] endpoint that redirects to /blob/{blobId}
- Update UI file links to use /download/ paths instead of direct blob links
- Update permalinks to use immutable /blob/{blobId} URLs
- Fix host preservation in redirects for remote access

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

1 files changed, 37 insertions, 0 deletions

diff --git a/frontend/app/download/[...path]/route.ts b/frontend/app/download/[...path]/route.ts
new file mode 100644
index 0000000..966a89e
--- /dev/null
+++ b/frontend/app/download/[...path]/route.ts
@@ -0,0 +1,37 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { Drive_stat } from '@/lib/drive_server'
+
+// GET /download/[...path] - Download file by path (redirects to blob endpoint)
+export async function GET(
+  request: NextRequest,
+  { params }: { params: Promise<{ path: string[] }> }
+) {
+  try {
+    const { path } = await params
+    
+    // Reconstruct the full path
+    const fullPath = '/' + path.join('/')
+    
+    // Get filename from path for the download
+    const filename = path[path.length - 1] || 'download'
+    
+    // Get blob ID using Drive_stat
+    const blobId = await Drive_stat(fullPath)
+    
+    // Redirect to blob endpoint with filename - preserve original host
+    // Use X-Forwarded-Host or Host header to get the correct host
+    const forwardedHost = request.headers.get('x-forwarded-host')
+    const host = forwardedHost || request.headers.get('host') || new URL(request.url).host
+    const protocol = request.headers.get('x-forwarded-proto') || (new URL(request.url).protocol.replace(':', ''))
+    const redirectUrl = `${protocol}://${host}/blob/${blobId}?filename=${encodeURIComponent(filename)}`
+    
+    return NextResponse.redirect(redirectUrl)
+    
+  } catch (error) {
+    console.error('Download error:', error)
+    return new NextResponse(
+      error instanceof Error ? error.message : 'File not found',
+      { status: 404 }
+    )
+  }
+}
\ No newline at end of file