import Link from "next/link"
import { LEGAL, LEGAL_PAGES } from "@/lib/legal"

/**
 * Shared shell for every legal page. Renders a consistent header (title,
 * effective/updated dates), the body, and a cross-link nav to sibling policies.
 * `pt-32` clears the fixed marketing navbar.
 */
export function LegalPage({
  title,
  subtitle,
  updated,
  children,
}: {
  title: string
  subtitle?: string
  /** Optional per-page override; defaults to the global LEGAL.lastUpdated. */
  updated?: string
  children: React.ReactNode
}) {
  return (
    <div className="bg-[#09090b] text-white min-h-screen">
      <div className="mx-auto max-w-3xl px-6 pt-32 pb-24">
        <nav className="mb-8 text-xs text-white/30">
          <Link href="/" className="hover:text-white/60 transition">Home</Link>
          <span className="mx-1.5">/</span>
          <span className="text-white/50">{title}</span>
        </nav>

        <header className="mb-10 border-b border-white/[0.06] pb-8">
          <h1 className="text-3xl font-bold text-white mb-3">{title}</h1>
          {subtitle && <p className="text-sm text-white/50 leading-relaxed">{subtitle}</p>}
          <p className="mt-4 text-xs text-white/30">
            Effective date: {LEGAL.effectiveDate} · Last updated: {updated ?? LEGAL.lastUpdated}
          </p>
        </header>

        <div className="space-y-9">{children}</div>

        <PolicyNav current={title} />
      </div>
    </div>
  )
}

/** A titled section. Pass plain text or JSX children (paragraphs, lists, etc.). */
export function Section({
  id,
  heading,
  children,
}: {
  id?: string
  heading: string
  children: React.ReactNode
}) {
  return (
    <section id={id} className="scroll-mt-32">
      <h2 className="text-lg font-semibold text-white mb-3">{heading}</h2>
      <div className="space-y-3 text-sm text-white/50 leading-relaxed [&_a]:text-indigo-300 [&_a:hover]:text-indigo-200 [&_strong]:text-white/80 [&_ul]:list-disc [&_ul]:pl-5 [&_ul]:space-y-1.5 [&_li]:marker:text-white/30">
        {children}
      </div>
    </section>
  )
}

/** Highlighted note (e.g. a disclaimer or important caveat). */
export function Callout({ children }: { children: React.ReactNode }) {
  return (
    <div className="rounded-xl border border-amber-500/20 bg-amber-500/[0.06] px-4 py-3.5 text-sm text-amber-100/80 leading-relaxed">
      {children}
    </div>
  )
}

/** Standard "questions / contact us" block for the bottom of a policy. */
export function LegalContact({
  email = LEGAL.contactEmail,
  children,
}: {
  email?: string
  children?: React.ReactNode
}) {
  return (
    <Section heading="Contact us">
      <p>
        {children ?? "If you have questions about this policy, contact us at "}
        <a href={`mailto:${email}`}>{email}</a>.
      </p>
      <p className="text-white/30 text-xs">
        {LEGAL.entity}
        {LEGAL.address && !LEGAL.address.startsWith("[") ? ` · ${LEGAL.address}` : ""}
      </p>
    </Section>
  )
}

/** Cross-links to the other legal documents. */
function PolicyNav({ current }: { current: string }) {
  return (
    <nav className="mt-14 border-t border-white/[0.06] pt-8">
      <p className="text-xs font-semibold uppercase tracking-wider text-white/30 mb-4">
        More policies
      </p>
      <ul className="grid grid-cols-2 gap-x-6 gap-y-2.5 sm:grid-cols-3">
        {LEGAL_PAGES.filter((p) => p.label !== current).map((p) => (
          <li key={p.href}>
            <Link href={p.href} className="text-sm text-white/50 hover:text-white transition">
              {p.label}
            </Link>
          </li>
        ))}
      </ul>
    </nav>
  )
}