---
// Example code from the `html` prop or the rendered slot; the copy button carries it in data-bs-text.
import Icon from '@ui/Icon.astro'
import { beautifyHtml, highlightCode, removeHref } from '@shared/lib/code-example'

/**
 * Demo area background:
 * - surface-secondary — muted solid surface (default)
 * - transparent — checkerboard pattern, for components with their own background
 * - primary — theme-aware white (bg-surface)
 */
type ExampleBackground = 'surface-secondary' | 'transparent' | 'primary' | 'dark'

interface Props {
  /** raw HTML of the example; when absent — the slot is rendered */
  html?: string
  /** code shown in the panel instead of html */
  code?: string
  raw?: boolean
  overflow?: string
  background?: ExampleBackground
  class?: string
  height?: string
  column?: boolean
  centered?: boolean
  vertical?: boolean
  columnFullWidth?: boolean
  hideCode?: boolean
  codeOnly?: boolean
  /** no padding around the demo, for content that fills the whole area, such as a map */
  flush?: boolean
}

const { html: htmlProp, code, raw, overflow = 'auto', background = 'surface-secondary', class: className, height, column, centered, vertical, columnFullWidth, hideCode, codeOnly, flush } = Astro.props

const backgroundClasses: Record<ExampleBackground, string> = {
  'surface-secondary': 'bg-surface-secondary',
  'transparent': 'bg-pattern-rectangles',
  'primary': 'bg-surface',
  'dark': 'bg-dark',
}

// Strip empty lines from the example HTML.
let html = (htmlProp ?? (await Astro.slots.render('default'))).replace(/^\s*[\r\n]/gm, '')

// JSX reserializes the slot markup: empty SVG elements get explicit closing
// tags, and apostrophes in text are escaped. We restore the source form so the
// code in the panel looks like hand-written HTML.
html = html.replace(/<(path|circle|line|polyline|polygon|rect|ellipse)([^>]*?)\s*><\/\1>/g, '<$1$2 />').replace(/&#39;/g, "'")

// Demo and its code panel render as one visually joined group: the demo keeps
// only its top corners rounded when a code panel is attached below it.
const hasDemo = !codeOnly
const hasCode = !hideCode
const exampleClasses = ['example fs-base border', hasCode ? 'rounded-top' : 'rounded', !raw && 'd-flex flex-wrap justify-content-center', `overflow-${overflow}`, 'position-relative', backgroundClasses[background], className]

const innerClasses = [flush ? 'p-0' : 'p-6', 'w-full', column && 'd-flex gap-3 flex-column', !column && centered && `d-flex flex-fill flex-wrap gap-2 justify-content-center${vertical ? ' align-items-center flex-column' : ' justify-content-center'}`, columnFullWidth && 'd-flex flex-fill flex-column gap-2']

const highlighted = hideCode ? '' : await highlightCode(beautifyHtml(code ?? html), 'html')
---

<!--EXAMPLE-->{/* data-example-markup carries the markup for examples with no code panel, so the .md mirror (docs/lib/llms.ts) still has real html to show */}
<div class="docs-example my-5" data-example-markup={hideCode ? (code ?? html) : undefined}>
  {
    hasDemo && (
      <div class:list={exampleClasses} style={height ? `height: ${height}` : undefined}>
        {raw ? (
          <Fragment set:html={removeHref(html)} />
        ) : (
          <div class:list={innerClasses} style={column ? 'max-width: 25rem;' : undefined}>
            <Fragment set:html={removeHref(html)} />
          </div>
        )}
      </div>
    )
  }

  {
    hasCode && (
      <div class:list={['docs-example-code position-relative', hasDemo && 'docs-example-code-attached']}>
        <button type="button" class="btn btn-icon btn-dark position-absolute m-2 top-0 end-0 z-3" data-bs-toggle="clipboard" data-bs-text={code ?? html} aria-label="Copy code">
          <Icon name="clipboard" class="clipboard-label" />
          <Icon name="check" class="clipboard-feedback" />
          <span class="clipboard-feedback visually-hidden">Copied</span>
        </button>
        <Fragment set:html={highlighted} />
      </div>
    )
  }
</div>
<!--/EXAMPLE-->