Added download functionality.

src/components/input/DownloadButton.tsx

@@ -0,0 +1,41 @@
+import Papa from 'papaparse';
+import { Button, Icon, TooltipPopup } from 'react-basics';
+import Icons from '@/components/icons';
+import { useMessages } from '@/components/hooks';
+
+export function DownloadButton({
+  filename = 'data',
+  data,
+}: {
+  filename?: string;
+  data?: any;
+  onClick?: () => void;
+}) {
+  const { formatMessage, labels } = useMessages();
+
+  const handleClick = async () => {
+    downloadCsv(`${filename}.csv`, Papa.unparse(data));
+  };
+
+  return (
+    <TooltipPopup label={formatMessage(labels.download)} position="top">
+      <Button variant="quiet" onClick={handleClick} disabled={!data}>
+        <Icon>
+          <Icons.Download />
+        </Icon>
+      </Button>
+    </TooltipPopup>
+  );
+}
+
+function downloadCsv(filename: string, data: any) {
+  const blob = new Blob([data], { type: 'text/csv' });
+  const url = URL.createObjectURL(blob);
+
+  const a = document.createElement('a');
+  a.href = url;
+  a.download = filename;
+  a.click();
+
+  URL.revokeObjectURL(url);
+}