Testimonial carousel

'use client'

import { useState } from 'react'
import { ChevronLeft, ChevronRight } from 'lucide-react'
import { Container } from '@/components/ui/layout'
import { Avatar } from '@/components/ui/avatar'
import { Button } from '@/components/ui/button'
import { cn } from '@/lib/cn'
import { testimonials } from '@/content/demo'

/**
 * Testimonial carousel
 *
 * A manual carousel — no autoplay. Auto-advancing content fails WCAG 2.2.2
 * unless it can be paused, and a quote that moves while you are reading it is
 * hostile regardless of the guideline.
 *
 * The live region announces the position, and the dot controls are real
 * buttons with names rather than decorated spans.
 */
export default function TestimonialCarousel() {
  const [index, setIndex] = useState(0)
  const quote = testimonials[index]

  const go = (next: number) => setIndex((next + testimonials.length) % testimonials.length)

  return (
    <section className="border-b border-line bg-canvas py-section">
      <Container size="narrow">
        <div className="flex items-center justify-between gap-4">
          <h2 className="display-type text-xl font-semibold text-ink-strong sm:text-2xl">
            From the people using it
          </h2>
          <div className="flex items-center gap-1.5">
            <Button
              variant="outline"
              size="icon-sm"
              onClick={() => go(index - 1)}
              aria-label="Previous testimonial"
            >
              <ChevronLeft className="size-4" />
            </Button>
            <Button
              variant="outline"
              size="icon-sm"
              onClick={() => go(index + 1)}
              aria-label="Next testimonial"
            >
              <ChevronRight className="size-4" />
            </Button>
          </div>
        </div>

        <div aria-live="polite" aria-atomic="true" className="mt-8">
          <p className="sr-only">
            Testimonial {index + 1} of {testimonials.length}
          </p>
          <figure className="rounded-xl border border-line bg-surface p-6 sm:p-8">
            <blockquote className="text-md leading-relaxed text-ink sm:text-lg">
              “{quote?.quote}”
            </blockquote>
            <figcaption className="mt-6 flex items-center gap-3">
              <Avatar name={quote?.name ?? 'Anonymous'} size="md" decorative />
              <div>
                <p className="text-sm font-semibold text-ink-strong">{quote?.name}</p>
                <p className="text-sm text-ink-muted">
                  {quote?.role}, {quote?.company}
                </p>
              </div>
            </figcaption>
          </figure>
        </div>

        <div className="mt-5 flex items-center justify-center gap-2">
          {testimonials.map((item, dotIndex) => (
            <button
              key={item.name}
              type="button"
              onClick={() => setIndex(dotIndex)}
              aria-current={dotIndex === index ? 'true' : undefined}
              className={cn(
                'h-1.5 rounded-full transition-all duration-200',
                dotIndex === index ? 'w-6 bg-accent' : 'w-1.5 bg-line-strong hover:bg-ink-subtle',
              )}
            >
              <span className="sr-only">Show testimonial from {item.name}</span>
            </button>
          ))}
        </div>
      </Container>
    </section>
  )
}

import type { ButtonHTMLAttributes, ReactNode } from 'react'
import Link from 'next/link'
import { cn } from '@/lib/cn'
import { variants } from '@/lib/variants'
import { Spinner } from './spinner'

/**
 * Button
 *
 * The whole action surface of Foundry in one component. It is intentionally a
 * *shared* component (no `'use client'`): rendered from a Server Component it
 * ships zero JavaScript, and it upgrades to a client island automatically when
 * a Client Component imports it.
 *
 * Height, padding and radius resolve from density and radius tokens, so a
 * button restyles itself when the density or palette axis changes. Focus is
 * handled once, globally, by the `:focus-visible` rule in `globals.css`.
 */
const buttonVariants = variants(
  cn(
    'relative inline-flex items-center justify-center gap-2 whitespace-nowrap font-medium',
    'transition-colors duration-150 ease-standard select-none',
    'disabled:pointer-events-none disabled:opacity-50',
    'aria-disabled:pointer-events-none aria-disabled:opacity-50',
  ),
  {
    variants: {
      variant: {
        primary: 'bg-accent text-accent-ink hover:bg-accent-hover active:bg-accent-active',
        secondary: 'bg-surface-inverse text-ink-inverse hover:opacity-90 active:opacity-80',
        outline: 'border border-line-strong bg-surface text-ink hover:bg-surface-sunken',
        ghost: 'text-ink hover:bg-surface-sunken active:bg-surface-sunken',
        destructive: 'bg-danger text-white hover:opacity-90 active:opacity-80',
        success: 'bg-success text-white hover:opacity-90 active:opacity-80',
        warning: 'bg-warning text-white hover:opacity-90 active:opacity-80',
        link: 'text-accent underline underline-offset-4 hover:text-accent-hover',
        soft: 'bg-accent-soft text-accent-soft-ink border border-accent-line hover:brightness-[0.97]',
      },
      size: {
        sm: 'h-control-sm px-3 text-xs rounded-md',
        md: 'h-control px-[var(--density-control-padding-x)] text-sm rounded-md',
        lg: 'h-control-lg px-5 text-base rounded-md',
        icon: 'h-control w-control p-0 rounded-md',
        'icon-sm': 'h-control-sm w-control-sm p-0 rounded-sm',
      },
      block: { true: 'w-full', false: '' },
    },
    defaultVariants: { variant: 'primary', size: 'md', block: false },
    compound: [
      { variant: 'link', size: 'sm', class: 'h-auto px-0' },
      { variant: 'link', size: 'md', class: 'h-auto px-0' },
      { variant: 'link', size: 'lg', class: 'h-auto px-0' },
    ],
  },
)

export type ButtonVariant =
  | 'primary'
  | 'secondary'
  | 'outline'
  | 'ghost'
  | 'destructive'
  | 'success'
  | 'warning'
  | 'link'
  | 'soft'

export type ButtonSize = 'sm' | 'md' | 'lg' | 'icon' | 'icon-sm'

export interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: ButtonVariant
  size?: ButtonSize
  block?: boolean
  /** Swaps content for a spinner while preserving the button's measured width. */
  loading?: boolean
  /** Announced by assistive tech while `loading` is true. */
  loadingLabel?: string
  leadingIcon?: ReactNode
  trailingIcon?: ReactNode
}

export function Button({
  variant = 'primary',
  size = 'md',
  block = false,
  loading = false,
  loadingLabel = 'Working',
  leadingIcon,
  trailingIcon,
  className,
  children,
  disabled,
  type = 'button',
  ...props
}: ButtonProps) {
  return (
    <button
      type={type}
      className={buttonVariants({ variant, size, block, className })}
      disabled={disabled ?? loading}
      aria-busy={loading || undefined}
      {...props}
    >
      {loading ? (
        <>
          {/* Label stays in the DOM but hidden so the control never collapses
              to spinner width halfway through an interaction. */}
          <span className="invisible flex items-center gap-2" aria-hidden="true">
            {leadingIcon}
            {children}
            {trailingIcon}
          </span>
          <span className="absolute inset-0 flex items-center justify-center">
            <Spinner size="sm" />
            <span className="sr-only">{loadingLabel}</span>
          </span>
        </>
      ) : (
        <>
          {leadingIcon}
          {children}
          {trailingIcon}
        </>
      )}
    </button>
  )
}

export interface ButtonLinkProps {
  href: string
  variant?: ButtonVariant
  size?: ButtonSize
  block?: boolean
  className?: string
  children?: ReactNode
  leadingIcon?: ReactNode
  trailingIcon?: ReactNode
  'aria-label'?: string
  'aria-current'?: 'page' | 'step' | 'true' | undefined
  target?: string
  rel?: string
  prefetch?: boolean
}

/** Anchor styled as a button, for when the action is really navigation. */
export function ButtonLink({
  href,
  variant = 'primary',
  size = 'md',
  block = false,
  className,
  children,
  leadingIcon,
  trailingIcon,
  ...props
}: ButtonLinkProps) {
  return (
    <Link href={href} className={buttonVariants({ variant, size, block, className })} {...props}>
      {leadingIcon}
      {children}
      {trailingIcon}
    </Link>
  )
}

export { buttonVariants }