import { useState } from "react"
import type { Meta, StoryObj } from "@storybook/react-vite"
import { BoldIcon, ItalicIcon, StarIcon } from "lucide-react"
import { Toggle, ToggleGroup, ToggleGroupItem } from "@hm-design/ui"
import { StateBoard } from "@/components/story-board"
import { STORY_KICKER, StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"

// Toggle is a persistent pressed-state control. The representative Story shows each state with real, clickable toggles; the same
// specimens also exist as Stories tagged `verification` (hidden from the sidebar). Icon-only toggles carry an `aria-label`.

function OffOn() {
  return (
    <div className="flex flex-wrap items-center gap-3">
      <Toggle>Off</Toggle>
      <Toggle defaultPressed>On</Toggle>
      <Toggle variant="outline">Outline off</Toggle>
      <Toggle variant="outline" defaultPressed>
        Outline on
      </Toggle>
    </div>
  )
}

function WithIcon() {
  return (
    <div className="flex flex-wrap items-center gap-3">
      <Toggle aria-label="굵게">
        <BoldIcon />
      </Toggle>
      <Toggle aria-label="기울임" defaultPressed>
        <ItalicIcon />
      </Toggle>
      <Toggle variant="outline">
        <StarIcon />
        즐겨찾기
      </Toggle>
    </div>
  )
}

function Sizes() {
  return (
    <div className="grid gap-3">
      {(["sm", "default", "lg"] as const).map((size) => (
        <div key={size} data-toggle-size={size} className="flex flex-wrap items-center gap-3">
          <Toggle size={size} variant="outline" aria-label={`${size} icon-only`}><StarIcon /></Toggle>
          <Toggle size={size} variant="outline"><StarIcon />즐겨찾기</Toggle>
          <Toggle size={size} variant="outline">{size}</Toggle>
        </div>
      ))}
    </div>
  )
}

function Disabled() {
  return (
    <div className="flex flex-wrap items-center gap-3">
      <Toggle disabled>Disabled off</Toggle>
      <Toggle disabled defaultPressed>
        Disabled on
      </Toggle>
    </div>
  )
}

function Controlled() {
  const [pressed, setPressed] = useState(false)
  return (
    <div className="flex items-center gap-3">
      <Toggle variant="outline" pressed={pressed} onPressedChange={setPressed}>
        알림
      </Toggle>
      <span className="text-sm text-muted-foreground" data-testid="controlled">{`pressed = ${String(pressed)}`}</span>
    </div>
  )
}

// className extension: the consumer's width / rounded utilities win over the default look.
function Extended() {
  return (
    <Toggle variant="outline" className="w-40 rounded-full">
      w-40 rounded-full
    </Toggle>
  )
}

const sections = [
  { id: "offon", label: "Off / On", node: <OffOn /> },
  { id: "icon", label: "Icon-only and icon + text", node: <WithIcon /> },
  { id: "sizes", label: "Sizes", node: <Sizes /> },
  { id: "disabled", label: "Disabled", node: <Disabled /> },
  { id: "controlled", label: "Controlled", node: <Controlled /> },
  { id: "extended", label: "className extension", node: <Extended /> },
]

const meta = { title: "Components/Form/Toggle", component: Toggle, parameters: { layout: "padded" } } satisfies Meta<typeof Toggle>
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: "Toggle",
  parameters: { layout: "fullscreen", controls: { disable: true } },
  render: () => (
    <StoryPage>
      <StoryPageHeader
        kicker={STORY_KICKER.components}
        title="Toggle"
        description="Toggle과 Toggle Group은 눌림(On) 상태를 공유합니다. Default·Outline, Off·On·Disabled와 키보드 Focus를 같은 기준으로 비교합니다."
      />
      <StorySection title="Overview">{board("offon")}</StorySection>
      <StorySection title="단독 · 연결 그룹" description="단독 Toggle은 독립 선택입니다. spacing=0 그룹은 연결 형태이며 single은 하나, multiple은 여러 항목을 선택합니다.">
        <div className="grid gap-4">
          <div><p className="mb-2">단독 · 독립 선택</p><Toggle variant="outline">알림</Toggle></div>
          <div><p className="mb-2">연결 그룹 · 단일 선택</p><ToggleGroup type="single" variant="outline" defaultValue="left" aria-label="정렬"><ToggleGroupItem value="left">왼쪽</ToggleGroupItem><ToggleGroupItem value="center">가운데</ToggleGroupItem><ToggleGroupItem value="right">오른쪽</ToggleGroupItem></ToggleGroup></div>
          <div><p className="mb-2">연결 그룹 · 다중 선택</p><ToggleGroup type="multiple" variant="outline" defaultValue={["bold"]} aria-label="글자 스타일"><ToggleGroupItem value="bold">굵게</ToggleGroupItem><ToggleGroupItem value="italic">기울임</ToggleGroupItem></ToggleGroup></div>
        </div>
      </StorySection>
      <StorySection title="Sizes">
        <Sizes />
      </StorySection>
      <StorySection title="Variants" description="아이콘만, 아이콘 + 텍스트입니다.">{board("icon")}</StorySection>
      <StorySection title="States">{board("disabled", "controlled")}</StorySection>
      <StorySection title="Usage" description="className 확장입니다.">{board("extended")}</StorySection>
    </StoryPage>
  ),
}

export const States: Story = { tags: ["verification"], render: () => <OffOn /> }
export const IconOnly: Story = { tags: ["verification"], name: "Icon Only", render: () => <WithIcon /> }
export const DisabledToggle: Story = { tags: ["verification"], name: "Disabled", render: () => <Disabled /> }

export const ContentNodes: Story = {
  tags: ["verification"],
  render: () => (
    <div className="flex flex-wrap gap-3">
      <Toggle aria-label="Array icon">{[<StarIcon key="icon" />]}</Toggle>
      <Toggle aria-label="Fragment icon"><><StarIcon /></></Toggle>
      <Toggle><><StarIcon />즐겨찾기</></Toggle>
      <Toggle><StarIcon /><span>즐겨찾기</span></Toggle>
    </div>
  ),
}