"use client"

/**
 * Accordion — Radix-backed expandable section list.
 *
 * Use for **collapsible groups of secondary content** that would otherwise
 * make the page too long (FAQ, settings categories, glossary, audit
 * timeline grouped by day). Each `AccordionItem` toggles independently
 * when `type="multiple"`, or as a single-open group when `type="single"`.
 *
 * When to choose `Accordion` vs `Collapsible` vs `Tabs`:
 *  - **`Accordion`** — multiple siblings, each independently expandable,
 *    visible chevron + label that wraps cleanly.
 *  - **`Collapsible`** — a single show / hide region with no sibling
 *    grouping (used inside lists, inspector panels).
 *  - **`Tabs`** — only one panel visible at a time, vertical or
 *    horizontal nav, fixed set of named sections.
 *
 * Accessibility:
 *  - Each `AccordionTrigger` renders as a `<button>` inside an `<h3>` so
 *    screen readers expose the headings + expanded state (WCAG 1.3.1).
 *  - Arrow-up / Arrow-down navigate between triggers; Home / End jump to
 *    the first / last.
 */

import * as React from "react"
import { Accordion as AccordionPrimitive } from "radix-ui"

import { cn } from "../../lib/utils"

function Accordion({
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Root>) {
  return <AccordionPrimitive.Root data-slot="accordion" {...props} />
}

function AccordionItem({
  className,
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Item>) {
  return (
    <AccordionPrimitive.Item
      data-slot="accordion-item"
      className={cn("border-b last:border-b-0", className)}
      {...props}
    />
  )
}

function AccordionTrigger({
  className,
  children,
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Trigger>) {
  return (
    <AccordionPrimitive.Header className="flex">
      <AccordionPrimitive.Trigger
        data-slot="accordion-trigger"
        className={cn(
          "flex flex-1 items-start justify-between gap-4 rounded-md py-4 text-sm font-medium text-foreground outline-none transition-[color,box-shadow] duration-150 ease-out hover:underline focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-50 [&[data-state=open]>i.accordion-chevron]:rotate-180",
          className,
        )}
        {...props}
      >
        {children}
        <i
          className="accordion-chevron fa-light fa-chevron-down pointer-events-none mt-0.5 text-xs leading-none text-muted-foreground transition-transform duration-200"
          aria-hidden="true"
        />
      </AccordionPrimitive.Trigger>
    </AccordionPrimitive.Header>
  )
}

function AccordionContent({
  className,
  children,
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Content>) {
  return (
    <AccordionPrimitive.Content
      data-slot="accordion-content"
      className="overflow-hidden text-sm text-muted-foreground"
      {...props}
    >
      <div className={cn("pb-4 pt-0", className)}>{children}</div>
    </AccordionPrimitive.Content>
  )
}

export { Accordion, AccordionItem, AccordionTrigger, AccordionContent }