feat: login form as a client component, theme toggle

.storybook/main.ts

@@ -0,0 +1,16 @@
+import type { StorybookConfig } from '@storybook/nextjs';
+
+const config: StorybookConfig = {
+  core: {
+    disableWhatsNewNotifications: true,
+    disableTelemetry: true,
+    enableCrashReports: false,
+  },
+  stories: ['../components/**/*.(stories|story).@(js|jsx|ts|tsx)'],
+  addons: ['storybook-dark-mode'],
+  framework: {
+    name: '@storybook/nextjs',
+    options: {},
+  },
+};
+export default config;

.storybook/preview.tsx

@@ -0,0 +1,36 @@
+import '@mantine/core/styles.css';
+
+import React, { useEffect } from 'react';
+import { addons } from '@storybook/preview-api';
+import { DARK_MODE_EVENT_NAME } from 'storybook-dark-mode';
+import { MantineProvider, useMantineColorScheme } from '@mantine/core';
+import { darkTheme } from '../theme';
+
+export const parameters = {
+  layout: 'fullscreen',
+  options: {
+    showPanel: false,
+    storySort: (a, b) => {
+      return a.title.localeCompare(b.title, undefined, { numeric: true });
+    },
+  },
+};
+
+const channel = addons.getChannel();
+
+function ColorSchemeWrapper({ children }: { children: React.ReactNode }) {
+  const { setColorScheme } = useMantineColorScheme();
+  const handleColorScheme = (value: boolean) => setColorScheme(value ? 'dark' : 'light');
+
+  useEffect(() => {
+    channel.on(DARK_MODE_EVENT_NAME, handleColorScheme);
+    return () => channel.off(DARK_MODE_EVENT_NAME, handleColorScheme);
+  }, [channel]);
+
+  return <>{children}</>;
+}
+
+export const decorators = [
+  (renderStory: any) => <ColorSchemeWrapper>{renderStory()}</ColorSchemeWrapper>,
+  (renderStory: any) => <MantineProvider theme={darkTheme}>{renderStory()}</MantineProvider>,
+];