AI settings

'use client';

import { useEffect, useId, useRef, useState } from 'react';
import { cn, prefersReducedMotion, useTexts } from '@/lib/kit';
import { Icon, type IconName } from '@/components/ui/icon';
import { Reveal } from '@/components/ui/reveal';
import { Stagger } from '@/components/ui/motion';
import { Switch } from '@/components/ui/switch';

export type AiSettingsVariant = 'memory' | 'instructions' | 'data-controls' | 'connected-apps' | 'workspace-policy';

export interface AiMemory {
  id: string;
  text: string;
  /** Where it was learned, e.g. "Chat on Oct 12" */
  source: string;
  group: string;
}

export interface AiTonePreset {
  id: string;
  label: string;
  /** How the sample answer reads with this preset */
  sample: string;
}

export interface AiConnection {
  id: string;
  name: string;
  icon?: IconName;
  /** What it gives the assistant, e.g. "Read your calendar" */
  access: { id: string; label: string; on: boolean }[];
  lastUsed?: string;
  connected: boolean;
}

export interface AiPolicyRule {
  id: string;
  label: string;
  description: string;
  icon?: IconName;
  on: boolean;
  /** Shown as a badge, e.g. "Blocks 12 requests a week" */
  impact?: string;
}

export interface AiSettingsProps {
  variant?: AiSettingsVariant;
  title?: string;
  description?: string;
  /** memory */
  memories?: AiMemory[];
  memoryOn?: boolean;
  /** instructions */
  about?: string;
  style?: string;
  presets?: AiTonePreset[];
  /** instructions: the question the sample answer replies to */
  sampleQuestion?: string;
  maxLength?: number;
  /** data-controls: how long chats are kept, the first is the default */
  retention?: string[];
  /** connected-apps */
  connections?: AiConnection[];
  /** workspace-policy */
  rules?: AiPolicyRule[];
  models?: { id: string; name: string; allowed: boolean }[];
  labels?: Partial<(typeof TEXTS)['en']>;
  className?: string;
}

const TEXTS = {
  en: {
    
    memoryOn: 'Remember things across chats',
    memoryNote: 'The assistant keeps short facts you share, so you do not have to repeat them. You see and control every one of them here.',
    search: 'Search memory',
    count: '{n} entries',
    learned: 'From {source}',
    edit: 'Edit {name}',
    save: 'Save',
    cancel: 'Cancel',
    forget: 'Forget {name}',
    forgotten: 'Forgotten. The assistant no longer uses it.',
    undo: 'Undo',
    forgetAll: 'Forget everything',
    forgetAllAsk: 'Forget all {n} memories? This cannot be undone.',
    confirmForget: 'Forget all',
    empty: 'Nothing remembered yet. Facts appear here as you chat.',
    noMatch: 'No memory matches your search.',
    paused: 'Memory is off. Existing memories stay until you delete them.',
    about: 'What should the assistant know about you?',
    aboutHint: 'Role, company, what you work on',
    style: 'How should it answer?',
    styleHint: 'Length, tone, format, language',
    presets: 'Start from a preset',
    preview: 'Preview',
    previewNote: 'A sample answer with these settings',
    saved: 'Saved. New chats use these instructions.',
    chars: '{n} of {max}',
    unsaved: 'Unsaved changes',
    dataTitle: 'Your data',
    training: 'Improve the models with my chats',
    trainingNote: 'Off by default. Chats are never used for training unless you turn this on.',
    history: 'Keep chat history',
    historyNote: 'Older chats are deleted automatically.',
    temporary: 'Start temporary chats by default',
    temporaryNote: 'Temporary chats are not saved and not remembered.',
    export: 'Export my data',
    exportNote: 'A file with all chats and memories, ready within a few minutes.',
    exportStart: 'Request export',
    exportReady: 'Export requested. We email you the link.',
    deleteAll: 'Delete all chats',
    deleteNote: 'Removes every chat for good. Memories stay unless you forget them.',
    deleteConfirm: 'Type DELETE to confirm',
    deleteWord: 'DELETE',
    deleteDone: 'All chats deleted.',
    delete: 'Delete',
    connections: 'Connected apps',
    connectionsNote: 'The assistant only reads what you allow here. Every access is listed with its last use.',
    connect: 'Connect',
    disconnect: 'Disconnect',
    lastUsed: 'Last used {when}',
    notConnected: 'Not connected',
    access: 'Access',
    allowed: '{on} of {n} allowed',
    policy: 'Rules for the workspace',
    policyNote: 'Apply to everyone in the workspace. Members see which rule blocked a request.',
    allowedModels: 'Allowed models',
    rulesTitle: 'Protection',
    changedBy: 'Changes are logged',
    publish: 'Apply rules',
    applied: 'Rules applied to all members.',
    on: 'On',
    off: 'Off',
  },
  de: {
    
    memoryOn: 'Über Chats hinweg merken',
    memoryNote: 'Der Assistent merkt sich kurze Fakten, die du teilst, damit du sie nicht wiederholen musst. Jeden davon siehst und steuerst du hier.',
    search: 'Gedächtnis durchsuchen',
    count: '{n} Einträge',
    learned: 'Aus {source}',
    edit: '{name} bearbeiten',
    save: 'Speichern',
    cancel: 'Abbrechen',
    forget: '{name} vergessen',
    forgotten: 'Vergessen. Der Assistent nutzt es nicht mehr.',
    undo: 'Rückgängig',
    forgetAll: 'Alles vergessen',
    forgetAllAsk: 'Alle {n} Einträge vergessen? Das lässt sich nicht rückgängig machen.',
    confirmForget: 'Alle vergessen',
    empty: 'Noch nichts gemerkt. Fakten erscheinen hier, während du chattest.',
    noMatch: 'Kein Eintrag passt zur Suche.',
    paused: 'Gedächtnis ist aus. Bestehende Einträge bleiben, bis du sie löschst.',
    about: 'Was soll der Assistent über dich wissen?',
    aboutHint: 'Rolle, Firma, woran du arbeitest',
    style: 'Wie soll er antworten?',
    styleHint: 'Länge, Ton, Format, Sprache',
    presets: 'Mit einer Vorlage starten',
    preview: 'Vorschau',
    previewNote: 'Eine Beispielantwort mit diesen Einstellungen',
    saved: 'Gespeichert. Neue Chats nutzen diese Anweisungen.',
    chars: '{n} von {max}',
    unsaved: 'Nicht gespeichert',
    dataTitle: 'Deine Daten',
    training: 'Modelle mit meinen Chats verbessern',
    trainingNote: 'Standardmäßig aus. Chats werden nie zum Training genutzt, außer du schaltest es ein.',
    history: 'Chatverlauf behalten',
    historyNote: 'Ältere Chats werden automatisch gelöscht.',
    temporary: 'Neue Chats vorübergehend starten',
    temporaryNote: 'Vorübergehende Chats werden nicht gespeichert und nicht gemerkt.',
    export: 'Meine Daten exportieren',
    exportNote: 'Eine Datei mit allen Chats und Einträgen, in wenigen Minuten fertig.',
    exportStart: 'Export anfordern',
    exportReady: 'Export angefordert. Wir mailen dir den Link.',
    deleteAll: 'Alle Chats löschen',
    deleteNote: 'Entfernt jeden Chat endgültig. Das Gedächtnis bleibt, bis du es leerst.',
    deleteConfirm: 'Zum Bestätigen LÖSCHEN eingeben',
    deleteWord: 'LÖSCHEN',
    deleteDone: 'Alle Chats gelöscht.',
    delete: 'Löschen',
    connections: 'Verbundene Apps',
    connectionsNote: 'Der Assistent liest nur, was du hier erlaubst. Jeder Zugriff steht mit seiner letzten Nutzung da.',
    connect: 'Verbinden',
    disconnect: 'Trennen',
    lastUsed: 'Zuletzt {when}',
    notConnected: 'Nicht verbunden',
    access: 'Zugriff',
    allowed: '{on} von {n} erlaubt',
    policy: 'Regeln für den Arbeitsbereich',
    policyNote: 'Gelten für alle im Arbeitsbereich. Mitglieder sehen, welche Regel eine Anfrage gestoppt hat.',
    allowedModels: 'Erlaubte Modelle',
    rulesTitle: 'Schutz',
    changedBy: 'Änderungen werden protokolliert',
    publish: 'Regeln anwenden',
    applied: 'Regeln für alle Mitglieder angewendet.',
    on: 'An',
    off: 'Aus',
  },
};

type Texts = (typeof TEXTS)['en'];
type P = AiSettingsProps & { t: Texts };
const fill = (s: string, v: Record<string, string | number>) => s.replace(/\{(\w+)\}/g, (_, k) => String(v[k] ?? ''));

/** State seeded from a prop that starts over when the prop changes (the Studio edits props live) */
function useSynced<T>(value: T) {
  const [state, setState] = useState(value);
  const key = JSON.stringify(value);
  const seen = useRef(key);
  if (seen.current !== key) {
    seen.current = key;
    setState(value);
  }
  return [state, setState] as const;
}

const CSS =
  '@keyframes ais-up{from{opacity:0;transform:translateY(8px)}}@keyframes ais-out{to{opacity:0;transform:translateX(20px)}}@keyframes ais-swap{from{opacity:0;filter:blur(3px)}}' +
  '@media (prefers-reduced-motion:no-preference){.ais-up{animation:ais-up .45s var(--ease-kit) var(--ais-d,0ms) both}.ais-out{animation:ais-out .3s var(--ease-kit) both}.ais-swap{animation:ais-swap .5s var(--ease-kit) both}}';

function Style() {
  return (
    <style href="kit-ai-settings" precedence="default">
      {CSS}
    </style>
  );
}

/* ------------------------------------------------------------------ */
/* Shared parts                                                        */
/* ------------------------------------------------------------------ */

function Stage({ title, description, children, className, wide }: { title?: string; description?: string; children: React.ReactNode; className?: string; wide?: boolean }) {
  return (
    <section className={cn('kit-glow relative overflow-clip bg-surface py-12 sm:py-16 lg:py-20', className)}>
      <div className="kit-container">
        <div className={cn('mx-auto w-full', wide ? 'max-w-[64rem]' : 'max-w-[46rem]')}>
          {(title || description) && (
            <Reveal className="mb-6 sm:mb-8">
              {title && <h2 className="text-balance text-[22px] font-semibold leading-tight tracking-[-0.02em] text-foreground sm:text-[26px]">{title}</h2>}
              {description && <p className="mt-2 max-w-[38rem] text-pretty text-[14.5px] leading-relaxed text-muted-foreground">{description}</p>}
            </Reveal>
          )}
          {children}
        </div>
      </div>
    </section>
  );
}

function Card({ children, className }: { children: React.ReactNode; className?: string }) {
  return <div className={cn('rounded-2xl border border-border bg-card shadow-[var(--highlight),var(--shadow-sm)]', className)}>{children}</div>;
}

const primaryBtn = 'inline-flex h-11 items-center justify-center gap-1.5 rounded-lg bg-primary px-4 text-[13.5px] font-medium text-primary-foreground shadow-[inset_0_1px_0_rgb(255_255_255/0.18),var(--shadow-sm)] transition-colors hover:bg-[color-mix(in_oklab,var(--primary)_88%,var(--background))] disabled:bg-[color-mix(in_oklab,var(--foreground)_8%,var(--card))] disabled:text-subtle-foreground disabled:shadow-none sm:h-9';
const quietBtn = 'inline-flex h-11 items-center justify-center gap-1.5 rounded-lg border border-border bg-card px-4 text-[13.5px] font-medium text-foreground transition-colors hover:bg-accent disabled:opacity-50 sm:h-9';
const dangerBtn = 'inline-flex h-11 items-center justify-center gap-1.5 rounded-lg border border-[color-mix(in_oklab,var(--destructive)_40%,var(--border))] px-4 text-[13.5px] font-medium text-destructive transition-colors hover:bg-[color-mix(in_oklab,var(--destructive)_10%,transparent)] sm:h-9';
const iconBtn = 'grid size-11 shrink-0 place-items-center rounded-lg text-muted-foreground transition-colors hover:bg-accent hover:text-foreground sm:size-8';
const field = 'w-full rounded-xl border border-border bg-background px-3.5 py-3 text-[14.5px] leading-relaxed text-foreground outline-none transition-[border-color,box-shadow] placeholder:text-subtle-foreground focus:border-[color-mix(in_oklab,var(--primary)_55%,var(--border))] focus:shadow-[0_0_0_4px_color-mix(in_oklab,var(--primary)_14%,transparent)] focus-visible:outline-none';

function Status({ children, tone = 'success' }: { children: React.ReactNode; tone?: 'success' | 'muted' }) {
  return (
    <span role="status" className={cn('ais-up inline-flex items-center gap-1.5 text-[13px]', tone === 'success' ? 'text-success-foreground' : 'text-muted-foreground')}>
      <Icon name={tone === 'success' ? 'check-circle' : 'info'} size={15} />
      {children}
    </span>
  );
}

/* ------------------------------------------------------------------ */
/* memory                                                              */
/* ------------------------------------------------------------------ */

function Memory({ t, title, description, memories = [], memoryOn = true, className }: P) {
  const [items, setItems] = useSynced(memories);
  const [on, setOn] = useState(memoryOn);
  const [q, setQ] = useState('');
  const [editing, setEditing] = useState<string | null>(null);
  const [draft, setDraft] = useState('');
  const [leaving, setLeaving] = useState<string | null>(null);
  const [last, setLast] = useState<{ m: AiMemory; i: number } | null>(null);
  const [ask, setAsk] = useState(false);
  const uid = useId();
  const shown = items.filter((m) => !q || m.text.toLowerCase().includes(q.toLowerCase()));
  const groups = Array.from(new Set(shown.map((m) => m.group)));

  const forget = (m: AiMemory) => {
    setLeaving(m.id);
    window.setTimeout(
      () => {
        setItems((s) => s.filter((x) => x.id !== m.id));
        setLast({ m, i: items.findIndex((x) => x.id === m.id) });
        setLeaving(null);
      },
      prefersReducedMotion() ? 0 : 300,
    );
  };

  return (
    <Stage title={title} description={description} className={className}>
      <Reveal delay={60}>
        <Card>
          <div className="border-b border-border p-4 sm:p-5">
            <Switch label={<span className="text-[14.5px] font-medium">{t.memoryOn}</span>} description={<span className="text-[13px] leading-relaxed">{t.memoryNote}</span>} checked={on} onCheckedChange={setOn} />
          </div>
          {!on && (
            <p className="ais-up flex items-center gap-2 border-b border-border bg-[color-mix(in_oklab,var(--warning)_10%,var(--card))] px-4 py-2.5 text-[13px] text-warning-foreground sm:px-5">
              <Icon name="pause" size={14} />
              {t.paused}
            </p>
          )}
          <div className={cn('transition-opacity duration-300', !on && 'opacity-60')}>
            <div className="border-b border-border p-3 sm:px-5">
              <label className="flex h-11 min-w-0 items-center gap-2 rounded-lg border border-border bg-background px-3 focus-within:border-[color-mix(in_oklab,var(--primary)_55%,var(--border))] focus-within:shadow-[0_0_0_3px_color-mix(in_oklab,var(--primary)_16%,transparent)] sm:h-9">
                <Icon name="search" size={15} className="shrink-0 text-muted-foreground" />
                <span className="sr-only">{t.search}</span>
                <input value={q} onChange={(e) => setQ(e.target.value)} placeholder={t.search} className="w-0 min-w-0 flex-1 bg-transparent text-[14px] text-foreground outline-none placeholder:text-subtle-foreground focus-visible:outline-none" />
                <span className="shrink-0 rounded-md bg-[color-mix(in_oklab,var(--foreground)_7%,transparent)] px-1.5 py-0.5 text-[12px] tabular-nums text-muted-foreground" aria-label={fill(t.count, { n: shown.length })}>
                  {shown.length}
                </span>
              </label>
            </div>
            {last && (
              <p role="status" className="ais-up flex items-center justify-between gap-3 border-b border-border bg-surface/60 px-4 py-2 text-[13px] text-muted-foreground sm:px-5">
                {t.forgotten}
                <button type="button" onClick={() => (setItems((s) => [...s.slice(0, last.i), last.m, ...s.slice(last.i)]), setLast(null))} className="-my-1 inline-flex h-11 items-center rounded-md px-2 font-medium text-foreground hover:bg-accent sm:h-8">
                  {t.undo}
                </button>
              </p>
            )}
            {items.length === 0 ? (
              <p className="px-5 py-10 text-center text-[13.5px] text-muted-foreground">{t.empty}</p>
            ) : shown.length === 0 ? (
              <p className="px-5 py-10 text-center text-[13.5px] text-muted-foreground">{t.noMatch}</p>
            ) : (
              <div className="divide-y divide-border">
                {groups.map((g) => (
                  <div key={g} className="py-2">
                    <p className="px-4 pb-1 pt-2 text-[12px] font-medium text-subtle-foreground sm:px-5">{g}</p>
                    <Stagger as="ul" step={50}>
                      {shown
                        .filter((m) => m.group === g)
                        .map((m) => (
                          <li key={m.id} className={cn('group flex items-start gap-3 px-4 py-2.5 sm:px-5', leaving === m.id && 'ais-out')}>
                            <span aria-hidden className="mt-2 size-1.5 shrink-0 rounded-full bg-primary" />
                            {editing === m.id ? (
                              <form
                                className="min-w-0 flex-1"
                                onSubmit={(e) => {
                                  e.preventDefault();
                                  setItems((s) => s.map((x) => (x.id === m.id ? { ...x, text: draft.trim() || x.text } : x)));
                                  setEditing(null);
                                }}
                              >
                                <label className="sr-only" htmlFor={`${uid}-mem-${m.id}`}>
                                  {fill(t.edit, { name: m.text })}
                                </label>
                                <input id={`${uid}-mem-${m.id}`} autoFocus value={draft} onChange={(e) => setDraft(e.target.value)} onKeyDown={(e) => e.key === 'Escape' && setEditing(null)} className={cn(field, 'h-11 py-0 sm:h-9')} />
                                <div className="mt-2 flex gap-2">
                                  <button type="submit" className={primaryBtn}>
                                    {t.save}
                                  </button>
                                  <button type="button" onClick={() => setEditing(null)} className={quietBtn}>
                                    {t.cancel}
                                  </button>
                                </div>
                              </form>
                            ) : (
                              <>
                                <span className="min-w-0 flex-1">
                                  <span className="block text-pretty text-[14.5px] leading-snug text-foreground">{m.text}</span>
                                  <span className="mt-0.5 block text-[12px] text-muted-foreground">{fill(t.learned, { source: m.source })}</span>
                                </span>
                                <span className="-my-1 flex shrink-0 opacity-100 transition-opacity sm:opacity-0 sm:group-focus-within:opacity-100 sm:group-hover:opacity-100">
                                  <button type="button" aria-label={fill(t.edit, { name: m.text })} onClick={() => (setEditing(m.id), setDraft(m.text))} className={iconBtn}>
                                    <Icon name="edit" size={15} />
                                  </button>
                                  <button type="button" aria-label={fill(t.forget, { name: m.text })} onClick={() => forget(m)} className={cn(iconBtn, 'hover:text-destructive')}>
                                    <Icon name="trash" size={15} />
                                  </button>
                                </span>
                              </>
                            )}
                          </li>
                        ))}
                    </Stagger>
                  </div>
                ))}
              </div>
            )}
          </div>
          <div className="border-t border-border bg-surface/60 px-4 py-3 sm:px-5">
            {ask ? (
              <div className="ais-up flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
                <p className="text-[13.5px] text-foreground">{fill(t.forgetAllAsk, { n: items.length })}</p>
                <div className="flex gap-2">
                  <button type="button" onClick={() => setAsk(false)} className={quietBtn}>
                    {t.cancel}
                  </button>
                  <button type="button" onClick={() => (setItems([]), setAsk(false), setLast(null))} className="inline-flex h-11 items-center rounded-lg bg-destructive px-4 text-[13.5px] font-medium text-destructive-foreground sm:h-9">
                    {t.confirmForget}
                  </button>
                </div>
              </div>
            ) : (
              <button type="button" disabled={!items.length} onClick={() => setAsk(true)} className={cn(dangerBtn, 'disabled:opacity-40')}>
                <Icon name="trash" size={15} />
                {t.forgetAll}
              </button>
            )}
          </div>
        </Card>
      </Reveal>
    </Stage>
  );
}

/* ------------------------------------------------------------------ */
/* instructions                                                        */
/* ------------------------------------------------------------------ */

function Instructions({ t, title, description, about = '', style = '', presets = [], sampleQuestion, maxLength = 1500, className }: P) {
  const [a, setA] = useSynced(about);
  const [s, setS] = useSynced(style);
  const [preset, setPreset] = useState(presets[0]?.id);
  const [saved, setSaved] = useState({ a: about, s: style, preset: presets[0]?.id });
  const [flash, setFlash] = useState(false);
  const dirty = a !== saved.a || s !== saved.s || preset !== saved.preset;
  const cur = presets.find((p) => p.id === preset);
  const id = useId();
  const refs = useRef<(HTMLButtonElement | null)[]>([]);

  const count = (v: string) => (
    <span className={cn('tabular-nums', v.length > maxLength * 0.9 ? 'text-warning-foreground' : 'text-subtle-foreground')}>{fill(t.chars, { n: v.length, max: maxLength })}</span>
  );

  return (
    <Stage title={title} description={description} className={className} wide>
      <div className="grid grid-cols-1 gap-4 lg:grid-cols-[minmax(0,1.2fr)_minmax(0,1fr)] lg:items-start lg:gap-6">
        <Reveal delay={60}>
          <Card>
            <form
              className="space-y-5 p-4 sm:p-5"
              onSubmit={(e) => {
                e.preventDefault();
                setSaved({ a, s, preset });
                setFlash(true);
              }}
            >
              <div>
                <label htmlFor={`${id}-a`} className="block text-[14px] font-medium text-foreground">
                  {t.about}
                </label>
                <p className="mb-2 mt-0.5 text-[12.5px] text-muted-foreground">{t.aboutHint}</p>
                <textarea id={`${id}-a`} rows={4} maxLength={maxLength} value={a} onChange={(e) => (setA(e.target.value), setFlash(false))} className={cn(field, 'resize-none')} />
                <p className="mt-1 text-right text-[12px]">{count(a)}</p>
              </div>
              <div>
                <label htmlFor={`${id}-s`} className="block text-[14px] font-medium text-foreground">
                  {t.style}
                </label>
                <p className="mb-2 mt-0.5 text-[12.5px] text-muted-foreground">{t.styleHint}</p>
                <textarea id={`${id}-s`} rows={3} maxLength={maxLength} value={s} onChange={(e) => (setS(e.target.value), setFlash(false))} className={cn(field, 'resize-none')} />
                <p className="mt-1 text-right text-[12px]">{count(s)}</p>
              </div>
              {presets.length > 0 && (
                <div role="radiogroup" aria-label={t.presets}>
                  <p className="mb-2 text-[12.5px] font-medium text-muted-foreground">{t.presets}</p>
                  <div className="flex flex-wrap gap-2">
                    {presets.map((p, i) => {
                      const on = p.id === preset;
                      return (
                        <button
                          key={p.id}
                          ref={(el) => {
                            refs.current[i] = el;
                          }}
                          type="button"
                          role="radio"
                          aria-checked={on}
                          tabIndex={on ? 0 : -1}
                          onClick={() => (setPreset(p.id), setFlash(false))}
                          onKeyDown={(e) => {
                            const d = ['ArrowRight', 'ArrowDown'].includes(e.key) ? 1 : ['ArrowLeft', 'ArrowUp'].includes(e.key) ? -1 : 0;
                            if (!d) return;
                            e.preventDefault();
                            const n = (i + d + presets.length) % presets.length;
                            setPreset(presets[n].id);
                            refs.current[n]?.focus();
                          }}
                          className={cn('inline-flex min-h-11 items-center rounded-lg border px-3 text-[13px] font-medium transition-colors sm:min-h-9', on ? 'border-[color-mix(in_oklab,var(--primary)_50%,var(--border))] bg-[color-mix(in_oklab,var(--primary)_12%,var(--card))] text-foreground' : 'border-border text-muted-foreground hover:text-foreground')}
                        >
                          {p.label}
                        </button>
                      );
                    })}
                  </div>
                </div>
              )}
              <div className="flex flex-wrap items-center justify-between gap-3 border-t border-border pt-4">
                <span aria-live="polite">{flash ? <Status>{t.saved}</Status> : dirty ? <Status tone="muted">{t.unsaved}</Status> : null}</span>
                <div className="flex gap-2">
                  <button type="button" disabled={!dirty} onClick={() => (setA(saved.a), setS(saved.s), setPreset(saved.preset))} className={quietBtn}>
                    {t.cancel}
                  </button>
                  <button type="submit" disabled={!dirty} className={primaryBtn}>
                    {t.save}
                  </button>
                </div>
              </div>
            </form>
          </Card>
        </Reveal>
        <Reveal delay={160} className="lg:sticky lg:top-6">
          <Card className="overflow-hidden">
            <div className="border-b border-border px-4 py-3 sm:px-5">
              <p className="text-[13px] font-medium text-foreground">{t.preview}</p>
              <p className="text-[12px] text-muted-foreground">{t.previewNote}</p>
            </div>
            <div className="flex flex-wrap gap-1.5 border-b border-border px-4 py-2.5 sm:px-5">
              {[a, s]
                .filter(Boolean)
                .map((v, i) => (
                  <span key={i} className="max-w-full truncate rounded-md bg-[color-mix(in_oklab,var(--primary)_10%,transparent)] px-2 py-1 text-[11.5px] text-[color-mix(in_oklab,var(--primary)_70%,var(--foreground))]">
                    {v.length > 46 ? `${v.slice(0, 44)}…` : v}
                  </span>
                ))}
            </div>
            <div className="space-y-3 p-4 sm:p-5">
              {sampleQuestion && <p className="ml-auto w-fit max-w-[90%] rounded-2xl rounded-br-md bg-[color-mix(in_oklab,var(--primary)_12%,var(--card))] px-3.5 py-2.5 text-[14px] text-foreground">{sampleQuestion}</p>}
              <div className="flex gap-2.5">
                <span aria-hidden className="grid size-7 shrink-0 place-items-center rounded-full bg-[color-mix(in_oklab,var(--primary)_14%,var(--card))] text-primary">
                  <Icon name="sparkle" size={14} />
                </span>
                <p key={preset} className="ais-swap whitespace-pre-line text-pretty text-[14px] leading-relaxed text-foreground">
                  {cur?.sample}
                </p>
              </div>
            </div>
          </Card>
        </Reveal>
      </div>
    </Stage>
  );
}

/* ------------------------------------------------------------------ */
/* data-controls                                                       */
/* ------------------------------------------------------------------ */

function DataControls({ t, title, description, retention = [], className }: P) {
  const [keep, setKeep] = useState(retention[0] ?? '');
  const [exported, setExported] = useState(false);
  const [del, setDel] = useState<'idle' | 'ask' | 'done'>('idle');
  const [word, setWord] = useState('');
  const id = useId();
  const row = 'flex flex-col gap-3 px-4 py-4 sm:flex-row sm:items-center sm:justify-between sm:gap-6 sm:px-5';
  return (
    <Stage title={title} description={description} className={className}>
      <Stagger step={90} className="space-y-4">
        <Card>
          <p className="border-b border-border px-4 py-3 text-[13px] font-medium text-foreground sm:px-5">{t.dataTitle}</p>
          <div className="divide-y divide-border">
            <div className="px-4 py-4 sm:px-5">
              <Switch label={<span className="text-[14.5px] font-medium">{t.training}</span>} description={<span className="text-[13px] leading-relaxed">{t.trainingNote}</span>} defaultChecked={false} />
            </div>
            <div className={row}>
              <div className="min-w-0">
                <label htmlFor={`${id}-keep`} className="block text-[14.5px] font-medium text-foreground">
                  {t.history}
                </label>
                <p className="mt-0.5 text-[13px] leading-relaxed text-muted-foreground">{t.historyNote}</p>
              </div>
              <span className="relative shrink-0 sm:w-44">
                <select id={`${id}-keep`} value={keep} onChange={(e) => setKeep(e.target.value)} className="h-11 w-full appearance-none rounded-lg border border-border bg-background pl-3 pr-9 text-[14px] text-foreground hover:border-border-strong sm:h-9">
                  {retention.map((r) => (
                    <option key={r}>{r}</option>
                  ))}
                </select>
                <Icon name="chevrons-up-down" size={15} className="pointer-events-none absolute right-3 top-1/2 -translate-y-1/2 text-muted-foreground" />
              </span>
            </div>
            <div className="px-4 py-4 sm:px-5">
              <Switch label={<span className="text-[14.5px] font-medium">{t.temporary}</span>} description={<span className="text-[13px] leading-relaxed">{t.temporaryNote}</span>} />
            </div>
          </div>
        </Card>
        <Card>
          <div className={row}>
            <div className="min-w-0">
              <p className="text-[14.5px] font-medium text-foreground">{t.export}</p>
              <p className="mt-0.5 text-[13px] leading-relaxed text-muted-foreground">{t.exportNote}</p>
            </div>
            {exported ? (
              <Status>{t.exportReady}</Status>
            ) : (
              <button type="button" onClick={() => setExported(true)} className={cn(quietBtn, 'shrink-0 self-start sm:self-auto')}>
                <Icon name="download" size={15} />
                {t.exportStart}
              </button>
            )}
          </div>
        </Card>
        <Card className="border-[color-mix(in_oklab,var(--destructive)_30%,var(--border))]">
          <div className={row}>
            <div className="min-w-0">
              <p className="text-[14.5px] font-medium text-foreground">{t.deleteAll}</p>
              <p className="mt-0.5 text-[13px] leading-relaxed text-muted-foreground">{t.deleteNote}</p>
            </div>
            {del === 'idle' && (
              <button type="button" onClick={() => setDel('ask')} className={cn(dangerBtn, 'shrink-0 self-start sm:self-auto')}>
                <Icon name="trash" size={15} />
                {t.deleteAll}
              </button>
            )}
            {del === 'done' && <Status>{t.deleteDone}</Status>}
          </div>
          {del === 'ask' && (
            <form
              className="ais-up flex flex-col gap-2 border-t border-border px-4 py-4 sm:flex-row sm:items-end sm:px-5"
              onSubmit={(e) => {
                e.preventDefault();
                if (word === t.deleteWord) setDel('done');
              }}
            >
              <label className="min-w-0 flex-1">
                <span className="mb-1.5 block text-[13px] text-muted-foreground">{t.deleteConfirm}</span>
                <input autoFocus value={word} onChange={(e) => setWord(e.target.value)} className={cn(field, 'h-11 py-0 sm:h-9')} />
              </label>
              <div className="flex gap-2">
                <button type="button" onClick={() => (setDel('idle'), setWord(''))} className={quietBtn}>
                  {t.cancel}
                </button>
                <button type="submit" disabled={word !== t.deleteWord} className="inline-flex h-11 items-center rounded-lg bg-destructive px-4 text-[13.5px] font-medium text-destructive-foreground disabled:opacity-40 sm:h-9">
                  {t.delete}
                </button>
              </div>
            </form>
          )}
        </Card>
      </Stagger>
    </Stage>
  );
}

/* ------------------------------------------------------------------ */
/* connected-apps                                                      */
/* ------------------------------------------------------------------ */

function ConnectedApps({ t, title, description, connections = [], className }: P) {
  const [items, setItems] = useSynced(connections);
  const [open, setOpen] = useState<string | null>(connections.find((c) => c.connected)?.id ?? null);
  const toggle = (cid: string, aid: string) => setItems((s) => s.map((c) => (c.id === cid ? { ...c, access: c.access.map((a) => (a.id === aid ? { ...a, on: !a.on } : a)) } : c)));
  return (
    <Stage title={title ?? t.connections} description={description ?? t.connectionsNote} className={className}>
      <Stagger as="ul" step={70} className="space-y-3">
        {items.map((c) => {
          const opened = open === c.id && c.connected;
          const on = c.access.filter((a) => a.on).length;
          return (
            <li key={c.id}>
              <Card className={cn('overflow-hidden transition-[border-color] duration-300', opened && 'border-border-strong')}>
                <div className="flex items-center gap-3 p-4 sm:px-5">
                  <span aria-hidden className={cn('grid size-11 shrink-0 place-items-center rounded-xl border border-border', c.connected ? 'bg-background text-foreground' : 'bg-surface text-muted-foreground')}>
                    <Icon name={c.icon ?? 'plug'} size={20} />
                  </span>
                  <div className="min-w-0 flex-1">
                    <p className="flex items-center gap-2 text-[15px] font-medium text-foreground">
                      {c.name}
                      {c.connected && <span aria-hidden className="size-2 rounded-full bg-success" />}
                    </p>
                    <p className="truncate text-[12.5px] text-muted-foreground">{c.connected ? `${fill(t.allowed, { on, n: c.access.length })}${c.lastUsed ? ` · ${fill(t.lastUsed, { when: c.lastUsed })}` : ''}` : t.notConnected}</p>
                  </div>
                  {c.connected ? (
                    <button type="button" aria-expanded={opened} aria-label={`${t.access}, ${c.name}`} onClick={() => setOpen(opened ? null : c.id)} className={iconBtn}>
                      <Icon name="chevron-down" size={17} className={cn('transition-transform duration-300', opened && 'rotate-180')} />
                    </button>
                  ) : (
                    <button type="button" onClick={() => (setItems((s) => s.map((x) => (x.id === c.id ? { ...x, connected: true } : x))), setOpen(c.id))} className={cn(quietBtn, 'shrink-0')}>
                      <Icon name="plug" size={15} />
                      {t.connect}
                    </button>
                  )}
                </div>
                <div className={cn('grid transition-[grid-template-rows] duration-500 ease-[var(--ease-kit)] motion-reduce:transition-none', opened ? 'grid-rows-[1fr]' : 'grid-rows-[0fr]')}>
                  <div className="overflow-hidden" inert={!opened || undefined}>
                    <div className="border-t border-border px-4 py-2 sm:px-5">
                      <ul className="divide-y divide-border">
                        {c.access.map((a) => (
                          <li key={a.id} className="py-1">
                            <Switch size="sm" label={<span className="text-[13.5px]">{a.label}</span>} checked={a.on} onCheckedChange={() => toggle(c.id, a.id)} className="min-h-11" />
                          </li>
                        ))}
                      </ul>
                      <div className="flex justify-end py-3">
                        <button type="button" onClick={() => (setItems((s) => s.map((x) => (x.id === c.id ? { ...x, connected: false } : x))), setOpen(null))} className={dangerBtn}>
                          {t.disconnect}
                        </button>
                      </div>
                    </div>
                  </div>
                </div>
              </Card>
            </li>
          );
        })}
      </Stagger>
    </Stage>
  );
}

/* ------------------------------------------------------------------ */
/* workspace-policy                                                    */
/* ------------------------------------------------------------------ */

function WorkspacePolicy({ t, title, description, rules = [], models = [], className }: P) {
  const [r, setR] = useSynced(rules);
  const [m, setM] = useSynced(models);
  const [applied, setApplied] = useState(false);
  const first = useRef(true);
  useEffect(() => {
    if (first.current) return void (first.current = false);
    setApplied(false);
  }, [r, m]);
  return (
    <Stage title={title ?? t.policy} description={description ?? t.policyNote} className={className} wide>
      <div className="grid grid-cols-1 gap-4 lg:grid-cols-[minmax(0,1.5fr)_minmax(0,1fr)] lg:items-start lg:gap-6">
        <Reveal delay={60}>
          <Card>
            <p className="border-b border-border px-4 py-3 text-[13px] font-medium text-foreground sm:px-5">{t.rulesTitle}</p>
            <Stagger as="ul" step={60} className="divide-y divide-border">
              {r.map((x) => (
                <li key={x.id} className="flex gap-3 px-4 py-4 sm:px-5">
                  <span aria-hidden className={cn('grid size-10 shrink-0 place-items-center rounded-xl transition-colors duration-300', x.on ? 'bg-[color-mix(in_oklab,var(--primary)_14%,var(--card))] text-primary' : 'bg-surface text-muted-foreground')}>
                    <Icon name={x.icon ?? 'shield'} size={18} />
                  </span>
                  <div className="min-w-0 flex-1">
                    <Switch label={<span className="text-[14.5px] font-medium">{x.label}</span>} description={<span className="text-[13px] leading-relaxed">{x.description}</span>} checked={x.on} onCheckedChange={(v) => setR((s) => s.map((y) => (y.id === x.id ? { ...y, on: v } : y)))} />
                    {x.impact && x.on && <span className="ais-up mt-2 inline-flex rounded-md bg-[color-mix(in_oklab,var(--foreground)_6%,transparent)] px-2 py-1 text-[12px] text-muted-foreground">{x.impact}</span>}
                  </div>
                </li>
              ))}
            </Stagger>
          </Card>
        </Reveal>
        <Reveal delay={160} className="space-y-4 lg:sticky lg:top-6">
          <Card>
            <p className="border-b border-border px-4 py-3 text-[13px] font-medium text-foreground sm:px-5">{t.allowedModels}</p>
            <ul className="p-2">
              {m.map((x) => (
                <li key={x.id}>
                  <label className="flex min-h-11 cursor-pointer items-center gap-3 rounded-lg px-2.5 hover:bg-accent/60">
                    <input type="checkbox" checked={x.allowed} onChange={() => setM((s) => s.map((y) => (y.id === x.id ? { ...y, allowed: !y.allowed } : y)))} className="size-[18px] accent-[var(--primary)]" />
                    <span className={cn('text-[14px]', x.allowed ? 'text-foreground' : 'text-muted-foreground')}>{x.name}</span>
                    <span className="ml-auto text-[12px] text-subtle-foreground">{x.allowed ? t.on : t.off}</span>
                  </label>
                </li>
              ))}
            </ul>
          </Card>
          <Card className="p-4 sm:p-5">
            <p className="flex items-center gap-1.5 text-[12.5px] text-muted-foreground">
              <Icon name="history" size={14} />
              {t.changedBy}
            </p>
            <div className="mt-3" aria-live="polite">
              {applied ? (
                <Status>{t.applied}</Status>
              ) : (
                <button type="button" onClick={() => setApplied(true)} className={cn(primaryBtn, 'w-full')}>
                  {t.publish}
                </button>
              )}
            </div>
          </Card>
        </Reveal>
      </div>
    </Stage>
  );
}

/* ------------------------------------------------------------------ */

/**
 * Settings of an AI assistant: memory you can see and edit, custom
 * instructions with a live preview, data controls with export and delete,
 * connected apps with access per scope and rules for a whole workspace.
 */
export function AiSettings({ variant = 'memory', labels, ...props }: AiSettingsProps) {
  const t = useTexts(TEXTS, labels);
  const p: P = { ...props, t };
  const body = (() => {
    switch (variant) {
      case 'instructions':
        return <Instructions {...p} />;
      case 'data-controls':
        return <DataControls {...p} />;
      case 'connected-apps':
        return <ConnectedApps {...p} />;
      case 'workspace-policy':
        return <WorkspacePolicy {...p} />;
      default:
        return <Memory {...p} />;
    }
  })();
  return (
    <>
      <Style />
      {body}
    </>
  );
}