import type { ReactNode } from "react"
import type { Meta, StoryObj } from "@storybook/react-vite"
import {
  NavigationMenu,
  NavigationMenuContent,
  NavigationMenuIndicator,
  NavigationMenuItem,
  NavigationMenuLink,
  NavigationMenuList,
  NavigationMenuTrigger,
} from "@hm-design/ui"
import { StateBoard } from "@/components/story-board"
import { StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"

// Navigation Menu is for destinations (links), not commands. The representative Story opens the real menus with hover, click or
// keyboard; the same specimens also exist as Stories tagged `verification` (hidden from the sidebar). Title + description children
// inside a content link are marked with `data-description` for the secondary text.

function Destination({ href, title, description, active }: { href: string; title: string; description?: string; active?: boolean }) {
  return (
    <NavigationMenuLink href={href} active={active}>
      <span>{title}</span>
      {description ? <span data-description="">{description}</span> : null}
    </NavigationMenuLink>
  )
}

function Specimen({ viewport = true }: { viewport?: boolean }) {
  return (
    <NavigationMenu viewport={viewport}>
      <NavigationMenuList>
        <NavigationMenuItem>
          <NavigationMenuTrigger>제품</NavigationMenuTrigger>
          <NavigationMenuContent>
            <ul className="sm:w-[min(360px,calc(100cqw-18px))]" style={{ display: "grid", gap: 4 }}>
              <li>
                <Destination href="#analytics" title="분석" description="노선과 시설물 데이터를 한눈에 확인합니다." />
              </li>
              <li>
                <Destination href="#maps" title="지도" description="공간 정보를 지도 위에서 관리합니다." />
              </li>
              <li>
                <Destination href="#reports" title="리포트" description="점검 결과를 보고서로 만듭니다." />
              </li>
            </ul>
          </NavigationMenuContent>
        </NavigationMenuItem>
        <NavigationMenuItem>
          <NavigationMenuTrigger>자료</NavigationMenuTrigger>
          <NavigationMenuContent>
            <ul className="sm:w-[min(300px,calc(100cqw-18px))]" style={{ display: "grid", gridTemplateColumns: "1fr 1fr", gap: 4 }}>
              <li>
                <Destination href="#docs" title="문서" />
              </li>
              <li>
                <Destination href="#guides" title="가이드" />
              </li>
              <li>
                <Destination href="#api" title="API" />
              </li>
              <li>
                <Destination href="#blog" title="블로그" />
              </li>
            </ul>
          </NavigationMenuContent>
        </NavigationMenuItem>
        <NavigationMenuItem>
          <NavigationMenuLink href="#company" active>
            회사
          </NavigationMenuLink>
        </NavigationMenuItem>
        <NavigationMenuItem>
          <NavigationMenuLink href="#contact">문의</NavigationMenuLink>
        </NavigationMenuItem>
        <NavigationMenuItem>
          <NavigationMenuTrigger disabled>준비 중</NavigationMenuTrigger>
        </NavigationMenuItem>
      </NavigationMenuList>
      {viewport ? <NavigationMenuIndicator /> : null}
    </NavigationMenu>
  )
}

// Size specimens to their review area (including the panel's 8px padding + 1px border on each side).
// Mobile uses the content's natural minimum width instead of a fixed desktop specimen width.
// `minHeight: 256` reserves room for the open panel (about 232px below the menu bar) so it never covers what follows.
// `compact` (representative page only) drops that reservation on PC (iframe width 1000px and up), where the two examples sit side by
// side and nothing is below them; in the one-column layout below 1000px the 256px stays so an open menu does not cover the next example.
const frame = (node: ReactNode, compact = false) => (
  <div
    style={{ width: "100%", containerType: "inline-size", ...(compact ? {} : { minHeight: 256 }) }}
    className={`max-md:[&_[data-viewport=false]_[data-slot=navigation-menu-content]]:absolute${compact ? " max-[999px]:min-h-64" : ""}`}
  >
    {node}
  </div>
)

const meta = { title: "Components/Navigation/Navigation Menu", component: NavigationMenu, parameters: { layout: "padded" } } satisfies Meta<typeof NavigationMenu>
export default meta
type Story = StoryObj<typeof meta>

export const All: Story = {
  name: "Navigation Menu",
  parameters: { layout: "fullscreen", controls: { disable: true } },
  render: () => (
    <StoryPage>
      <StoryPageHeader title="Navigation Menu" />
      {/* Overview is merged into Variants (Viewport is its first item). Two equal columns on PC (iframe width 1000px and up), one
          column below that; each specimen sits in its own single-column StateBoard (min larger than any column). */}
      <StorySection title="Variants">
        <div className="grid items-start gap-6 min-[1000px]:grid-cols-2">
          <StateBoard min={10000} states={[{ id: "viewport", label: "Viewport", children: frame(<Specimen />, true) }]} />
          <StateBoard min={10000} states={[{ id: "no-viewport", label: "No viewport", children: frame(<Specimen viewport={false} />, true) }]} />
        </div>
      </StorySection>
    </StoryPage>
  ),
}

export const Default: Story = { tags: ["verification"], render: () => frame(<Specimen />) }
export const NoViewport: Story = { tags: ["verification"], name: "No Viewport", render: () => frame(<Specimen viewport={false} />) }

// Three enabled triggers with different widths exercise first / middle / last offsets in both positioning modes.
export const IndicatorAlignment: Story = {
  tags: ["verification"],
  render: () => (
    <StateBoard min={520} states={[true, false].map((viewport) => ({
      id: viewport ? "viewport" : "no-viewport",
      label: `Indicator alignment · viewport=${viewport}`,
      children: frame(
        <NavigationMenu viewport={viewport}>
          <NavigationMenuList>
            {["제품", "기술 자료", "지원 센터"].map((label) => (
              <NavigationMenuItem key={label}>
                <NavigationMenuTrigger>{label}</NavigationMenuTrigger>
                <NavigationMenuContent><Destination href="#verification" title={`${label} 안내`} /></NavigationMenuContent>
              </NavigationMenuItem>
            ))}
          </NavigationMenuList>
          {viewport ? <NavigationMenuIndicator /> : null}
        </NavigationMenu>
      ),
    }))} />
  ),
}