import { useState, type ReactNode } from "react"
import type { Meta, StoryObj } from "@storybook/react-vite"
import { CalendarIcon, SettingsIcon, UserIcon } from "lucide-react"
import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, CommandList, CommandSeparator, CommandShortcut } from "@hm-design/ui"
import { StateBoard } from "@/components/story-board"
import { StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"

// The representative "Command" Story shows real, typeable lists; the same specimens also exist as Stories tagged `verification`
// (hidden from the sidebar). Filtering is cmdk's. The bordered box is Story composition (Command draws no border of its own).
// A selection log shows that Enter / click reach `onSelect`.

const box = (node: ReactNode) => <div className="w-full max-w-sm rounded-md border">{node}</div>

// `showValue={false}` hides the value readout on the representative page; the verification Stories keep it.
function Basic({ showValue = true }: { showValue?: boolean }) {
  const [last, setLast] = useState("-")
  return (
    <div className="grid gap-2">
      {box(
        <Command>
          <CommandInput placeholder="검색..." />
          <CommandList>
            <CommandEmpty>결과가 없습니다.</CommandEmpty>
            <CommandItem onSelect={setLast}>사과</CommandItem>
            <CommandItem onSelect={setLast}>바나나</CommandItem>
            <CommandItem onSelect={setLast} disabled>
              체리 (품절)
            </CommandItem>
            <CommandItem onSelect={setLast}>포도</CommandItem>
          </CommandList>
        </Command>
      )}
      {showValue ? <span className="text-sm text-muted-foreground" data-testid="last">{`선택: ${last}`}</span> : null}
    </div>
  )
}

function Grouped() {
  return box(
    <Command>
      <CommandInput placeholder="명령 검색..." />
      <CommandList>
        <CommandEmpty>결과가 없습니다.</CommandEmpty>
        <CommandGroup heading="제안">
          <CommandItem>
            <CalendarIcon />
            일정 보기
          </CommandItem>
          <CommandItem>
            <UserIcon />
            프로필
            <CommandShortcut>⌘P</CommandShortcut>
          </CommandItem>
        </CommandGroup>
        <CommandSeparator />
        <CommandGroup heading="설정">
          <CommandItem>
            <SettingsIcon />
            환경설정
            <CommandShortcut>⌘,</CommandShortcut>
          </CommandItem>
          <CommandItem disabled>결제 (사용 불가)</CommandItem>
        </CommandGroup>
      </CommandList>
    </Command>
  )
}

function Long() {
  return box(
    <Command>
      <CommandInput placeholder="항목 검색..." />
      <CommandList>
        <CommandEmpty>결과가 없습니다.</CommandEmpty>
        {Array.from({ length: 30 }, (_, i) => (
          <CommandItem key={i}>{`항목 ${i + 1} — 긴 항목 이름도 줄바꿈 없이 한 줄로 이어질 수 있습니다`}</CommandItem>
        ))}
      </CommandList>
    </Command>
  )
}

const sections = [
  { id: "basic", label: "Search", node: <Basic showValue={false} /> },
  { id: "grouped", label: "Groups", node: <Grouped /> },
  { id: "long", label: "Long list", node: <Long /> },
]

const meta = { title: "Components/Search & Date/Command", component: Command, parameters: { layout: "padded" } } satisfies Meta<typeof Command>
export default meta
type Story = StoryObj<typeof meta>

const board = (...ids: string[]) => (
  <StateBoard min={360} states={sections.filter((s) => ids.includes(s.id)).map((s) => ({ id: s.id, label: s.label, children: s.node }))} />
)

// Representative Story: the common Story page; the sections group the same specimens.
export const All: Story = {
  name: "Command",
  parameters: { layout: "fullscreen", controls: { disable: true } },
  render: () => (
    <StoryPage>
      <StoryPageHeader title="Command" />
      <StorySection title="Overview">{board("basic")}</StorySection>
      <StorySection title="Variants">{board("grouped")}</StorySection>
      <StorySection title="Usage">{board("long")}</StorySection>
    </StoryPage>
  ),
}

export const Search: Story = { tags: ["verification"], render: () => <Basic /> }
export const GroupedList: Story = { tags: ["verification"], name: "Grouped", render: () => <Grouped /> }