import { useMemo } from 'react'
import { useNavigate } from '@tanstack/react-router'
import { User, Wallet, LogOut, Settings } from 'lucide-react'
import { useTranslation } from 'react-i18next'
import { useAuthStore } from '@/stores/auth-store'
import { getUserAvatarFallback, getUserAvatarStyle } from '@/lib/avatar'
import { ROLE } from '@/lib/roles'
import useDialogState from '@/hooks/use-dialog'
import { useUserDisplay } from '@/hooks/use-user-display'
import { Avatar, AvatarFallback } from '@/components/ui/avatar'
import { Button } from '@/components/ui/button'
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from '@/components/ui/dropdown-menu'
import { SignOutDialog } from '@/components/sign-out-dialog'

const avatarFallbackClassName = 'font-semibold text-white'

export function ProfileDropdown() {
  const { t } = useTranslation()
  const navigate = useNavigate()
  const [open, setOpen] = useDialogState()
  const user = useAuthStore((state) => state.auth.user)
  const { displayName, roleLabel } = useUserDisplay(user)
  const isSuperAdmin = user?.role === ROLE.SUPER_ADMIN
  const avatarName = user?.username || displayName
  const avatarFallback = getUserAvatarFallback(avatarName)
  const avatarFallbackStyle = useMemo(
    () => getUserAvatarStyle(avatarName),
    [avatarName]
  )

  return (
    <>
      <DropdownMenu modal={false}>
        <DropdownMenuTrigger
          render={
            <Button
              variant='ghost'
              className='relative size-6 rounded-full p-0'
            />
          }
        >
          <Avatar className='size-6'>
            <AvatarFallback
              className={`${avatarFallbackClassName} text-[11px]`}
              style={avatarFallbackStyle}
            >
              {avatarFallback}
            </AvatarFallback>
          </Avatar>
        </DropdownMenuTrigger>
        <DropdownMenuContent align='end' sideOffset={8} className='w-56'>
          <div className='flex items-center gap-2 px-1.5 py-1.5'>
            <Avatar className='size-8'>
              <AvatarFallback
                className={`${avatarFallbackClassName} text-xs`}
                style={avatarFallbackStyle}
              >
                {avatarFallback}
              </AvatarFallback>
            </Avatar>
            <div className='flex flex-1 flex-col gap-0.5 overflow-hidden'>
              <p className='text-foreground truncate text-sm font-medium'>
                {displayName}
              </p>
              <div className='flex items-center gap-1.5'>
                <span className='text-muted-foreground text-xs'>
                  {roleLabel}
                </span>
                {user?.group && (
                  <>
                    <span className='text-muted-foreground text-xs'>·</span>
                    <span className='text-muted-foreground truncate text-xs'>
                      {String(user.group)}
                    </span>
                  </>
                )}
              </div>
            </div>
          </div>

          <DropdownMenuSeparator />

          <DropdownMenuItem onClick={() => navigate({ to: '/profile' })}>
            <User className='size-4' />
            {t('Profile')}
          </DropdownMenuItem>

          <DropdownMenuItem onClick={() => navigate({ to: '/wallet' })}>
            <Wallet className='size-4' />
            {t('Wallet')}
          </DropdownMenuItem>

          {isSuperAdmin && (
            <DropdownMenuItem
              onClick={() =>
                navigate({
                  to: '/system-settings/general',
                  search: { section: 'system-info' },
                })
              }
            >
              <Settings className='size-4' />
              {t('System Settings')}
            </DropdownMenuItem>
          )}

          <DropdownMenuSeparator />

          <DropdownMenuItem variant='destructive' onClick={() => setOpen(true)}>
            <LogOut className='size-4' />
            {t('Sign out')}
          </DropdownMenuItem>
        </DropdownMenuContent>
      </DropdownMenu>

      <SignOutDialog open={!!open} onOpenChange={setOpen} />
    </>
  )
}
