working now

templates/admin.html

@@ -1643,8 +1643,48 @@ async function createBackup() {
     }
 }
 
-function downloadBackup(filename) {
-    window.open('/api/admin/backup/download', '_blank');
+async function downloadBackup(filename) {
+    try {
+        const response = await fetch('/api/admin/backup/download', {
+            method: 'GET',
+            headers: getAuthHeaders()
+        });
+
+        if (!response.ok) {
+            let errorMsg = 'Failed to download backup';
+            try {
+                const err = await response.json();
+                errorMsg = err.detail || errorMsg;
+            } catch (_) {}
+            showAlert(errorMsg, 'error');
+            return;
+        }
+
+        const blob = await response.blob();
+
+        // Try to extract filename from headers if provided
+        let suggestedName = filename || 'database_backup.db';
+        const disp = response.headers.get('Content-Disposition') || response.headers.get('content-disposition');
+        if (disp) {
+            const match = /filename\*=UTF-8''([^;]+)|filename="?([^";]+)"?/i.exec(disp);
+            const extracted = match && (match[1] || match[2]);
+            if (extracted) {
+                try { suggestedName = decodeURIComponent(extracted); } catch (_) { suggestedName = extracted; }
+            }
+        }
+
+        const url = window.URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = suggestedName;
+        document.body.appendChild(a);
+        a.click();
+        a.remove();
+        window.URL.revokeObjectURL(url);
+    } catch (error) {
+        console.error('Backup download failed:', error);
+        showAlert('Failed to download backup', 'error');
+    }
 }
 
 // Utility Functions