feat(ui): Add UI library (#900)

* feat: scaffold UI library

* Update packages/ui/src/components/theme-provider.tsx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* add lock file

* lint/formatting fixes

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

packages/ui/src/lib/components/Sidebar/AppSidebar.tsx

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+import type { LucideIcon } from "lucide-react";
+import { ChevronRight } from "lucide-react";
+import type * as React from "react";
+import { Badge } from "@/components/ui/badge";
+import {
+  Collapsible,
+  CollapsibleContent,
+  CollapsibleTrigger,
+} from "@/components/ui/collapsible";
+import {
+  Sidebar,
+  SidebarContent,
+  SidebarFooter,
+  SidebarGroup,
+  SidebarGroupContent,
+  SidebarGroupLabel,
+  SidebarHeader,
+  SidebarMenu,
+  SidebarMenuButton,
+  SidebarMenuItem,
+  SidebarMenuSub,
+  SidebarMenuSubButton,
+  SidebarMenuSubItem,
+  useSidebar,
+} from "@/components/ui/sidebar";
+import { cn } from "@/lib/utils";
+
+export interface AppSidebarProps {
+  children?: React.ReactNode;
+  logo?: {
+    src: string;
+    alt: string;
+  };
+  title?: string;
+  navigationLabel?: string;
+  variant?: "sidebar" | "inset";
+  footer?: React.ReactNode;
+}
+
+export interface NavLink {
+  name: string;
+  icon: LucideIcon;
+  page: string;
+  count?: number;
+  active?: boolean;
+  disabled?: boolean;
+  items?: NavLink[];
+  onClick?: () => void;
+}
+
+export interface SidebarSectionProps {
+  label?: string;
+  items: NavLink[];
+}
+
+const AppSidebar = ({
+  children,
+  logo,
+  title,
+  navigationLabel,
+  items,
+  footer,
+  variant,
+  ...props
+}: SidebarSectionProps & AppSidebarProps) => {
+  const { state } = useSidebar();
+  const isCollapsed = state === "collapsed";
+
+  return (
+    <Sidebar collapsible="icon" variant="sidebar" {...props}>
+      <SidebarHeader
+        className={cn(
+          "h-14 mt-2 flex-shrink-0 transition-all duration-300 ease-in-out",
+        )}
+      >
+        <div className="flex items-center">
+          {logo && (
+            <img
+              src={logo.src}
+              alt={logo.alt}
+              className="size-10 flex-shrink-0 rounded-xl"
+            />
+          )}
+          {title && (
+            <h2
+              className={cn(
+                "text-xl font-semibold whitespace-nowrap",
+                "transition-all duration-300 ease-in-out",
+                isCollapsed
+                  ? "opacity-0 max-w-0 invisible ml-0"
+                  : "opacity-100 max-w-xs visible ml-2",
+              )}
+            >
+              {title}
+            </h2>
+          )}
+        </div>
+      </SidebarHeader>
+
+      <SidebarContent>
+        <SidebarGroup className="mt-4">
+          {navigationLabel && (
+            <SidebarGroupLabel
+              className={cn(
+                "transition-all duration-300 ease-in-out",
+                "whitespace-nowrap overflow-hidden",
+                isCollapsed ? "max-w-0 opacity-0 invisible" : "max-w-full",
+              )}
+            >
+              {navigationLabel}
+            </SidebarGroupLabel>
+          )}
+          <SidebarGroupContent>
+            <SidebarMenu>
+              {items.map((link) => {
+                // Check if this item has sub-items
+                if (link.items && link.items.length > 0) {
+                  return (
+                    <Collapsible
+                      key={link.name}
+                      asChild
+                      defaultOpen={link.active}
+                      className="group/collapsible"
+                    >
+                      <SidebarMenuItem>
+                        <CollapsibleTrigger asChild>
+                          <SidebarMenuButton
+                            onClick={link.onClick}
+                            disabled={link.disabled}
+                            tooltip={isCollapsed ? link.name : undefined}
+                          >
+                            {link.icon && <link.icon className="size-5" />}
+                            <span>{link.name}</span>
+                            {link.count !== undefined && link.count > 0 && (
+                              <Badge
+                                variant="default"
+                                className="ml-auto bg-blue-500 text-white text-xs"
+                              >
+                                {link.count}
+                              </Badge>
+                            )}
+                            <ChevronRight className="ml-auto transition-transform duration-200 group-data-[state=open]/collapsible:rotate-90" />
+                          </SidebarMenuButton>
+                        </CollapsibleTrigger>
+                        <CollapsibleContent>
+                          <SidebarMenuSub>
+                            {link.items.map((subLink) => (
+                              <SidebarMenuSubItem key={subLink.name}>
+                                <SidebarMenuSubButton
+                                  onClick={subLink.onClick}
+                                  isActive={subLink.active}
+                                >
+                                  {subLink.icon && (
+                                    <subLink.icon className="size-4" />
+                                  )}
+                                  <span>{subLink.name}</span>
+                                  {subLink.count !== undefined &&
+                                    subLink.count > 0 && (
+                                      <Badge
+                                        variant="default"
+                                        className="ml-auto bg-blue-500 text-white text-xs"
+                                      >
+                                        {subLink.count}
+                                      </Badge>
+                                    )}
+                                </SidebarMenuSubButton>
+                              </SidebarMenuSubItem>
+                            ))}
+                          </SidebarMenuSub>
+                        </CollapsibleContent>
+                      </SidebarMenuItem>
+                    </Collapsible>
+                  );
+                }
+
+                return (
+                  <SidebarMenuItem key={link.name}>
+                    <SidebarMenuButton
+                      onClick={link.onClick}
+                      isActive={link.active}
+                      disabled={link.disabled}
+                      tooltip={isCollapsed ? link.name : undefined}
+                    >
+                      {link.icon && <link.icon className="size-5" />}
+                      <span>{link.name}</span>
+                      {link.count !== undefined && link.count > 0 && (
+                        <Badge
+                          variant="default"
+                          className="ml-auto bg-blue-500 text-white text-xs"
+                        >
+                          {link.count}
+                        </Badge>
+                      )}
+                    </SidebarMenuButton>
+                  </SidebarMenuItem>
+                );
+              })}
+            </SidebarMenu>
+          </SidebarGroupContent>
+        </SidebarGroup>
+
+        {children && (
+          <div
+            className={cn("flex-1 min-h-0", isCollapsed && "overflow-hidden")}
+          >
+            {children}
+          </div>
+        )}
+      </SidebarContent>
+
+      {footer && <SidebarFooter className="pt-4">{footer}</SidebarFooter>}
+    </Sidebar>
+  );
+};
+
+AppSidebar.displayName = "AppSidebar";
+
+export default AppSidebar;

packages/ui/src/lib/components/index.ts

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+export { default as AppSidebar } from "./Sidebar/AppSidebar.tsx";

packages/ui/src/lib/components/theme-toggle.tsx

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+import { Moon, Sun } from "lucide-react";
+import { useTheme } from "@/components/theme-provider";
+import { Button } from "@/components/ui/button";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+
+export function ThemeToggle() {
+  const { setTheme } = useTheme();
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button variant="outline" size="icon">
+          <Sun className="size-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
+          <Moon className="absolute size-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
+          <span className="sr-only">Toggle theme</span>
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align="end">
+        <DropdownMenuItem onClick={() => setTheme("light")}>
+          Light
+        </DropdownMenuItem>
+        <DropdownMenuItem onClick={() => setTheme("dark")}>
+          Dark
+        </DropdownMenuItem>
+        <DropdownMenuItem onClick={() => setTheme("system")}>
+          System
+        </DropdownMenuItem>
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}

packages/ui/src/lib/theme/default.css

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+@import "tailwindcss";
+@import "tw-animate-css";
+
+@custom-variant dark (&:is(.dark *));
+
+:root {
+  --background: oklch(1 0 0);
+  --foreground: oklch(0.145 0 0);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.145 0 0);
+  --popover: oklch(1 0 0);
+  --popover-foreground: oklch(0.145 0 0);
+  --primary: oklch(0.205 0 0);
+  --primary-foreground: oklch(0.985 0 0);
+  --secondary: oklch(0.97 0 0);
+  --secondary-foreground: oklch(0.205 0 0);
+  --muted: oklch(0.97 0 0);
+  --muted-foreground: oklch(0.556 0 0);
+  --accent: oklch(0.97 0 0);
+  --accent-foreground: oklch(0.205 0 0);
+  --destructive: oklch(0.577 0.245 27.325);
+  --destructive-foreground: oklch(0.577 0.245 27.325);
+  --border: oklch(0.922 0 0);
+  --input: oklch(0.922 0 0);
+  --ring: oklch(0.708 0 0);
+  --chart-1: oklch(0.646 0.222 41.116);
+  --chart-2: oklch(0.6 0.118 184.704);
+  --chart-3: oklch(0.398 0.07 227.392);
+  --chart-4: oklch(0.828 0.189 84.429);
+  --chart-5: oklch(0.769 0.188 70.08);
+  --radius: 0.625rem;
+  --sidebar: oklch(0.985 0 0);
+  --sidebar-foreground: oklch(0.145 0 0);
+  --sidebar-primary: oklch(0.205 0 0);
+  --sidebar-primary-foreground: oklch(0.985 0 0);
+  --sidebar-accent: oklch(0.97 0 0);
+  --sidebar-accent-foreground: oklch(0.205 0 0);
+  --sidebar-border: oklch(0.922 0 0);
+  --sidebar-ring: oklch(0.708 0 0);
+}
+
+.dark {
+  --background: oklch(0.145 0 0);
+  --foreground: oklch(0.985 0 0);
+  --card: oklch(0.145 0 0);
+  --card-foreground: oklch(0.985 0 0);
+  --popover: oklch(0.145 0 0);
+  --popover-foreground: oklch(0.985 0 0);
+  --primary: oklch(0.985 0 0);
+  --primary-foreground: oklch(0.205 0 0);
+  --secondary: oklch(0.269 0 0);
+  --secondary-foreground: oklch(0.985 0 0);
+  --muted: oklch(0.269 0 0);
+  --muted-foreground: oklch(0.708 0 0);
+  --accent: oklch(0.269 0 0);
+  --accent-foreground: oklch(0.985 0 0);
+  --destructive: oklch(0.396 0.141 25.723);
+  --destructive-foreground: oklch(0.637 0.237 25.331);
+  --border: oklch(0.269 0 0);
+  --input: oklch(0.269 0 0);
+  --ring: oklch(0.439 0 0);
+  --chart-1: oklch(0.488 0.243 264.376);
+  --chart-2: oklch(0.696 0.17 162.48);
+  --chart-3: oklch(0.769 0.188 70.08);
+  --chart-4: oklch(0.627 0.265 303.9);
+  --chart-5: oklch(0.645 0.246 16.439);
+  --sidebar: oklch(0.205 0 0);
+  --sidebar-foreground: oklch(0.985 0 0);
+  --sidebar-primary: oklch(0.488 0.243 264.376);
+  --sidebar-primary-foreground: oklch(0.985 0 0);
+  --sidebar-accent: oklch(0.269 0 0);
+  --sidebar-accent-foreground: oklch(0.985 0 0);
+  --sidebar-border: oklch(0.269 0 0);
+  --sidebar-ring: oklch(0.439 0 0);
+}
+
+@theme inline {
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-card: var(--card);
+  --color-card-foreground: var(--card-foreground);
+  --color-popover: var(--popover);
+  --color-popover-foreground: var(--popover-foreground);
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-secondary: var(--secondary);
+  --color-secondary-foreground: var(--secondary-foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-accent: var(--accent);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-destructive: var(--destructive);
+  --color-destructive-foreground: var(--destructive-foreground);
+  --color-border: var(--border);
+  --color-input: var(--input);
+  --color-ring: var(--ring);
+  --color-chart-1: var(--chart-1);
+  --color-chart-2: var(--chart-2);
+  --color-chart-3: var(--chart-3);
+  --color-chart-4: var(--chart-4);
+  --color-chart-5: var(--chart-5);
+  --radius-sm: calc(var(--radius) - 4px);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+  --color-sidebar: var(--sidebar);
+  --color-sidebar-foreground: var(--sidebar-foreground);
+  --color-sidebar-primary: var(--sidebar-primary);
+  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+  --color-sidebar-accent: var(--sidebar-accent);
+  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+  --color-sidebar-border: var(--sidebar-border);
+  --color-sidebar-ring: var(--sidebar-ring);
+}
+
+@layer base {
+  * {
+    @apply border-border outline-ring/50;
+  }
+
+  body {
+    @apply bg-background text-foreground;
+  }
+}

packages/ui/src/lib/utils.ts

@@ -0,0 +1,6 @@
+import { type ClassValue, clsx } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}