add logout dialog

src/app/components/LogoutDialog.tsx

@@ -0,0 +1,60 @@
+import React, { forwardRef, useCallback } from 'react';
+import { Dialog, Header, config, Box, Text, Button, Spinner, color } from 'folds';
+import { AsyncStatus, useAsyncCallback } from '../hooks/useAsyncCallback';
+import { logoutClient } from '../../client/initMatrix';
+import { useMatrixClient } from '../hooks/useMatrixClient';
+
+type LogoutDialogProps = {
+  handleClose: () => void;
+};
+export const LogoutDialog = forwardRef<HTMLDivElement, LogoutDialogProps>(
+  ({ handleClose }, ref) => {
+    const mx = useMatrixClient();
+
+    const [logoutState, logout] = useAsyncCallback<void, Error, []>(
+      useCallback(async () => {
+        await logoutClient(mx);
+      }, [mx])
+    );
+
+    const ongoingLogout = logoutState.status === AsyncStatus.Loading;
+
+    return (
+      <Dialog variant="Surface" ref={ref}>
+        <Header
+          style={{
+            padding: `0 ${config.space.S200} 0 ${config.space.S400}`,
+            borderBottomWidth: config.borderWidth.B300,
+          }}
+          variant="Surface"
+          size="500"
+        >
+          <Box grow="Yes">
+            <Text size="H4">Logout</Text>
+          </Box>
+        </Header>
+        <Box style={{ padding: config.space.S400 }} direction="Column" gap="400">
+          <Text priority="400">You’re about to log out. Are you sure?</Text>
+          {logoutState.status === AsyncStatus.Error && (
+            <Text style={{ color: color.Critical.Main }} size="T300">
+              Failed to logout! {logoutState.error.message}
+            </Text>
+          )}
+          <Box direction="Column" gap="200">
+            <Button
+              variant="Critical"
+              onClick={logout}
+              disabled={ongoingLogout}
+              before={ongoingLogout && <Spinner variant="Critical" fill="Solid" size="200" />}
+            >
+              <Text size="B400">Logout</Text>
+            </Button>
+            <Button variant="Secondary" fill="Soft" onClick={handleClose} disabled={ongoingLogout}>
+              <Text size="B400">Cancel</Text>
+            </Button>
+          </Box>
+        </Box>
+      </Dialog>
+    );
+  }
+);