Vault/components/nav-main.tsx

"use client"

import { IconCirclePlusFilled, IconMail, type Icon } from "@tabler/icons-react"

import { Button } from "@/components/ui/button"
import {
  SidebarGroup,
  SidebarGroupContent,
  SidebarGroupLabel,
  SidebarMenu,
  SidebarMenuButton,
  SidebarMenuItem,
  SidebarMenuSub,
  SidebarMenuSubButton,
  SidebarMenuSubItem,
} from "@/components/ui/sidebar"
import { ChevronRight, type LucideIcon } from "lucide-react"
import {
  Collapsible,
  CollapsibleContent,
  CollapsibleTrigger,
} from "@/components/ui/collapsible"

export function NavMain({
  items,
}: {
  items: {
    title: string
    url: string
    icon?: Icon
    items?: { title: string; url: string }[]
    isActive?: boolean
  }[]
}) {
    return (
    <SidebarGroup>
      <SidebarGroupLabel>Platform</SidebarGroupLabel>
      <SidebarMenu>
        {items.map((item) => {
          const hasSubItems = item.items && item.items.length > 0;
          
          return (
            <Collapsible
              key={item.title}
              asChild
              defaultOpen={item.isActive}
              className="group/collapsible"
            >
              <SidebarMenuItem>
                <div className="flex items-center gap-0">
                  <SidebarMenuButton tooltip={item.title} asChild className="flex-1">
                    <a href={item.url}>
                      {item.icon && <item.icon />}
                      <span>{item.title}</span>
                    </a>
                  </SidebarMenuButton>
                  {hasSubItems && (
                    <CollapsibleTrigger asChild>
                      <Button
                        variant="ghost"
                        size="sm"
                        className="h-8 w-8 p-0 hover:bg-transparent"
                      >
                        <ChevronRight className="transition-transform duration-200 group-data-[state=open]/collapsible:rotate-90" />
                      </Button>
                    </CollapsibleTrigger>
                  )}
                </div>
                {hasSubItems && (
                  <CollapsibleContent>
                    <SidebarMenuSub>
                      {item.items?.map((subItem) => (
                        <SidebarMenuSubItem key={subItem.title}>
                          <SidebarMenuSubButton asChild>
                            <a href={subItem.url}>
                              <span>{subItem.title}</span>
                            </a>
                          </SidebarMenuSubButton>
                        </SidebarMenuSubItem>
                      ))}
                    </SidebarMenuSub>
                  </CollapsibleContent>
                )}
              </SidebarMenuItem>
            </Collapsible>
          );
        })}
      </SidebarMenu>
    </SidebarGroup>
  )
}