einfach-produktiv/app/components/KlaroConsentManager.tsx

"use client";

import { useEffect, useState } from "react";
import "klaro/dist/klaro.css";
import type { TrackingCode } from "../lib/payload";
import { buildKlaroConfig } from "../lib/klaroConfig";
import { loadTrackingCode } from "../lib/loadTrackingCode";

// Replaced a hand-rolled CookieBanner.tsx + useConsent.ts + TrackingScripts.tsx
// with kiprotect/klaro (open source, self-hosted, npm install klaro) —
// the custom banner only ever covered the accept/reject UI itself; Klaro
// additionally brings a real per-service consent list, bundled German UI
// translations, and (via `cookies`, not used here yet) cookie-deletion on
// withdrawal — all things a hand-rolled version would have had to build
// from scratch. See project memory for the fuller reasoning.
//
// Dynamically imported inside an effect (client-only, after mount) rather
// than a static top-level import — Klaro touches `window`/`document` at
// module-eval time in places, which isn't SSR-safe. The CSS import above
// stays static (Next.js requires CSS imports to be static, not inside a
// dynamic import()), paired with the "-no-css" JS build so the stylesheet
// isn't loaded twice.
//
// `buildKlaroConfig`'s `styling` CSS-var overrides (brand colors, corner
// position) only get Klaro so far — its bundled klaro.css still draws its
// own border/shadow/spacing/typography, which read as an obviously
// bolted-on library widget next to this site's own hand-designed
// components (NewsletterModal.tsx, NotifyMeForm.tsx, etc.). The <style>
// block below is a real CSS override pass against Klaro's actual DOM
// classnames (confirmed against kiprotect/klaro's own src/scss/*.scss,
// not guessed) — same "plain unlayered <style> tag wins the cascade"
// approach the Payload admin's own AdminUIStyles.tsx uses, `!important`
// added only where needed to beat klaro.css's own rules of otherwise-equal
// specificity. Kills Klaro's default border entirely (replaced with a
// soft shadow, matching this site's own card language) and restyles
// every button to the site's actual rounded/weighted look instead of
// Klaro's generic flat rectangles.
function KlaroTheme() {
  return (
    <style>{`
      .klaro, .klaro * { box-sizing: border-box; }
      .klaro .cookie-notice, .klaro .cookie-modal {
        border: none !important;
        box-shadow: 0 20px 44px -14px rgba(26,26,24,0.22), 0 4px 14px rgba(26,26,24,0.07) !important;
        border-radius: 18px !important;
        font-family: var(--font-inter), -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
      }
      .klaro .cookie-notice .cn-body { padding: 22px 24px !important; }
      .klaro .cookie-notice p, .klaro .cookie-modal p {
        font-size: 14px !important;
        line-height: 1.6 !important;
        margin-top: 0 !important;
        margin-bottom: 10px !important;
      }
      .klaro h1, .klaro h2 {
        font-family: var(--font-lora), Georgia, serif !important;
        font-weight: 700 !important;
        letter-spacing: -0.01em !important;
      }
      .klaro .cm-btn {
        border: none !important;
        border-radius: 8px !important;
        font-weight: 700 !important;
        font-size: 13px !important;
        padding: 10px 18px !important;
        transition: opacity 0.15s ease, transform 0.15s ease;
      }
      .klaro .cm-btn:hover { opacity: 0.88; }
      .klaro .cm-btn:active { transform: scale(0.97); }
      .klaro .cm-btn:focus-visible { outline: 2px solid #f6a701 !important; outline-offset: 2px; }
      .klaro a.cm-link, .klaro .cookie-notice a, .klaro .cookie-modal a {
        color: #a06b00 !important;
        text-decoration: underline !important;
        font-weight: 600 !important;
      }
      .klaro select, .klaro .cm-list-input + label {
        border-radius: 6px !important;
      }
    `}</style>
  );
}

export function KlaroConsentManager({ codes }: { codes: TrackingCode[] }) {
  // Kept in state (not just called once) so the persistent reopen button
  // below can call Klaro.show() itself, any time after the initial
  // accept/reject decision — a visitor must always be able to revisit
  // their choice, not just on first load.
  const [klaroModule, setKlaroModule] = useState<typeof import("klaro/dist/klaro-no-css") | null>(null);

  useEffect(() => {
    // Nothing to ask consent for — don't even load/render Klaro. A cookie
    // banner with zero services to list would just be visual noise.
    if (codes.length === 0) return;

    let cancelled = false;
    import("klaro/dist/klaro-no-css").then((Klaro) => {
      if (cancelled) return;
      const config = buildKlaroConfig(codes, loadTrackingCode);
      Klaro.setup(config);
      setKlaroModule(Klaro);
    });
    return () => {
      cancelled = true;
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps -- `codes` comes
    // from a server-fetched, 60s-ISR-cached layout prop; it's stable for
    // the lifetime of this component in practice, and Klaro.setup() isn't
    // meant to be called more than once per page load anyway.
  }, []);

  if (codes.length === 0) return null;

  return (
    <>
      <KlaroTheme />
      {klaroModule && (
        <button
          type="button"
          onClick={() => klaroModule.show()}
          aria-label="Cookie-Einstellungen öffnen"
          title="Cookie-Einstellungen"
          className="fixed bottom-5 left-5 z-40 flex h-11 w-11 items-center justify-center rounded-full border border-border bg-bg-base shadow-md hover:border-brand transition-colors"
        >
          <svg viewBox="0 0 24 24" width="22" height="22" fill="none" aria-hidden="true">
            <circle cx="12" cy="12" r="9" stroke="currentColor" strokeWidth="1.6" />
            <circle cx="9" cy="9.5" r="1.1" fill="currentColor" />
            <circle cx="14" cy="8.5" r="1" fill="currentColor" />
            <circle cx="15" cy="13.5" r="1.1" fill="currentColor" />
            <circle cx="10.5" cy="14.5" r="1" fill="currentColor" />
            <circle cx="12" cy="11" r="0.9" fill="currentColor" />
          </svg>
        </button>
      )}
    </>
  );
}