import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
import { useToast, useTRPC } from '@barev/web';
import { useEffect, useState } from 'react';
import type { Me } from '../App.tsx';
import { errText, useT, type BoKey } from '../i18n.tsx';
import { Avatar, I, PlanBadge, Skeleton, sourceLabel } from '../components/kit.tsx';
import { actionLabel } from './Dashboard.tsx';
import { SubDialog, type SubMode, type SubTarget } from './SubDialog.tsx';

const FLOWS = ['CLEANING', 'REPAIR', 'TRANSFER', 'LANGUAGE', 'CAREER', 'DOCUMENTS'];
const DAY = 86_400_000;

export function ClientCard({ id, me }: { id: string; me: Me }) {
  const { t, amd, date, dateTime, shared } = useT();
  const trpc = useTRPC();
  const c = useQuery(trpc.bo.clients.get.queryOptions({ id }));
  const [dlg, setDlg] = useState<{ mode: SubMode; sub?: SubTarget } | null>(null);
  const isSuper = me.roles.includes('SUPERADMIN');
  const canManage = isSuper || me.roles.includes('SUPPORT');

  if (c.isError)
    return (
      <>
        <a className="bo-back" href="#/clients">
          <I name="back" size={16} />
          {t('card.back')}
        </a>
        <div className="bo-panel bo-empty">{errText(t, c.error)}</div>
      </>
    );
  if (!c.data)
    return (
      <div className="bo-col">
        <Skeleton h={80} />
        <Skeleton h={220} />
        <Skeleton h={300} />
      </div>
    );
  const d = c.data;
  const current = d.subscriptions.find((s) => s.active && s.plan === 'ELITE') ?? d.subscriptions.find((s) => s.active);
  const statusText = (status: string) => {
    for (const f of FLOWS) {
      const k = `status.${f}.${status}`;
      const v = shared(k);
      if (v !== k) return v;
    }
    return status;
  };

  return (
    <>
      <a className="bo-back" href="#/clients">
        <I name="back" size={16} />
        {t('card.back')}
      </a>

      <header className="bo-profile">
        <Avatar name={d.name} id={d.id} size={64} />
        <div style={{ flex: 1, minWidth: 220 }}>
          <h1 className="bo-title" style={{ fontSize: 'clamp(26px, 3.4vw, 38px)' }}>
            {d.name}
          </h1>
          <div className="bo-muted" style={{ marginTop: 6, display: 'flex', flexWrap: 'wrap', gap: '4px 14px' }}>
            {d.username && <span>@{d.username}</span>}
            {d.phone && <span>{d.phone}</span>}
            <span>{t('card.since', { date: date(d.createdAt) })}</span>
          </div>
        </div>
        {d.username && (
          <a className="bo-btn bo-btn--ghost" href={`https://t.me/${d.username}`} target="_blank" rel="noreferrer">
            <I name="telegram" size={16} />
            {t('card.telegram')}
          </a>
        )}
      </header>

      <div className="bo-client-grid">
        <div className="bo-col">
          {/* посадочный талон текущей подписки */}
          <section>
            <div className={`bo-pass bo-pass--${current?.plan ?? 'none'}`}>
              <div className="bo-pass__main">
                <div className="bo-pass__plan">{current ? t(`plan.${current.plan}`) : t('card.noSub')}</div>
                <div className="bo-pass__meta">
                  {current ? (
                    <>
                      <span>{t(`subSource.${current.source}`)}</span>
                      {current.grantedBy && <span>{t('card.grantedBy', { name: current.grantedBy })}</span>}
                      {current.agency && <span>{t('card.giftFrom', { name: current.agency })}</span>}
                      {current.payMethod && <span>{t(`pay.${current.payMethod}`)}</span>}
                    </>
                  ) : (
                    <span>{t('card.noSubHint')}</span>
                  )}
                </div>
              </div>
              <div className="bo-pass__stub">
                {current ? (
                  <div>
                    <div className="bo-pass__date">{date(current.endsAt)}</div>
                    <div className="bo-pass__left">{t('card.daysLeft', { n: Math.max(0, Math.ceil((current.endsAt.getTime() - Date.now()) / DAY)) })}</div>
                  </div>
                ) : (
                  <span />
                )}
                <div className="bo-pass__card">{t('card.cardNo', { code: d.cardCode })}</div>
              </div>
            </div>
            {canManage && (
              <div className="bo-actions">
                <button type="button" className="bo-btn bo-btn--accent bo-btn--sm" onClick={() => setDlg({ mode: 'gift' })}>
                  <I name="gift" size={16} />
                  {t('act.gift')}
                </button>
                <button type="button" className="bo-btn bo-btn--sm" onClick={() => setDlg({ mode: 'sell' })}>
                  {t('act.sell')}
                </button>
                {current && (
                  <>
                    <button type="button" className="bo-btn bo-btn--ghost bo-btn--sm" onClick={() => setDlg({ mode: 'extend', sub: current })}>
                      {t('act.extend')}
                    </button>
                    <button type="button" className="bo-btn bo-btn--ghost bo-btn--sm" onClick={() => setDlg({ mode: 'plan', sub: current })}>
                      {t('act.changePlan')}
                    </button>
                    <button type="button" className="bo-btn bo-btn--danger bo-btn--sm" onClick={() => setDlg({ mode: 'cancel', sub: current })}>
                      {t('act.cancel')}
                    </button>
                  </>
                )}
              </div>
            )}
          </section>

          {d.subscriptions.length > 0 && (
            <section className="bo-panel">
              <div className="bo-panel__head">
                <h2 className="bo-h2">{t('card.history')}</h2>
              </div>
              {d.subscriptions.map((s) => {
                const upcoming = s.status === 'ACTIVE' && s.startsAt.getTime() > Date.now();
                const off = !s.active && !upcoming;
                return (
                  <div key={s.id} className={`bo-subrow${off ? ' bo-subrow--off' : ''}`}>
                    <PlanBadge plan={s.plan} t={t} />
                    <div style={{ minWidth: 0 }}>
                      <div style={{ fontWeight: 500 }}>
                        {date(s.startsAt)} — {date(s.endsAt)}
                        {s.amount != null && <span className="bo-num" style={{ marginLeft: 10 }}>{amd(s.amount)}</span>}
                      </div>
                      <div className="bo-subrow__meta">
                        {[
                          upcoming ? t('card.upcoming', { date: date(s.startsAt) }) : t(`subStatus.${s.status}`),
                          t(`subSource.${s.source}`),
                          s.grantedBy && t('card.grantedBy', { name: s.grantedBy }),
                          s.agency && t('card.giftFrom', { name: s.agency }),
                          s.payMethod && t(`pay.${s.payMethod}`),
                          s.refundAmount ? t('card.refunded', { sum: amd(s.refundAmount) }) : null,
                          s.cancelledAt && t('card.cancelledAt', { date: date(s.cancelledAt) }),
                        ]
                          .filter(Boolean)
                          .join(', ')}
                      </div>
                      {s.note && <div className="bo-subrow__meta" style={{ whiteSpace: 'pre-line', marginTop: 2 }}>{s.note}</div>}
                    </div>
                    <div className="bo-subrow__menu">
                      {canManage && s.status === 'ACTIVE' && !s.active && upcoming && (
                        <button type="button" className="bo-btn bo-btn--ghost bo-btn--sm" onClick={() => setDlg({ mode: 'cancel', sub: s })}>
                          {t('act.cancel')}
                        </button>
                      )}
                      {isSuper && s.amount != null && s.amount > (s.refundAmount ?? 0) && (
                        <button type="button" className="bo-btn bo-btn--ghost bo-btn--sm" onClick={() => setDlg({ mode: 'refund', sub: s })}>
                          {t('act.refund')}
                        </button>
                      )}
                    </div>
                  </div>
                );
              })}
            </section>
          )}

          <section className="bo-panel">
            <div className="bo-panel__head">
              <h2 className="bo-h2">{t('card.orders')}</h2>
              <button type="button" className="bo-btn bo-btn--ghost bo-btn--sm" disabled title={t('card.newOrderSoon')}>
                <I name="plus" size={16} />
                {t('card.newOrder')}
              </button>
            </div>
            {d.orders.length === 0 ? (
              <p className="bo-hint">{t('card.noOrders')}</p>
            ) : (
              <ul className="bo-list">
                {d.orders.map((o) => (
                  <li key={o.id} style={{ flexWrap: 'wrap' }}>
                    <span className="bo-num bo-faint" style={{ width: 52 }}>
                      №{o.number}
                    </span>
                    <span className="bo-grow" style={{ minWidth: 140 }}>
                      <b style={{ fontWeight: 600 }}>{shared(`services.${o.service}.name`)}</b>
                      <span className="bo-muted bo-small" style={{ display: 'block' }}>
                        {dateTime(o.scheduledAt)}
                        {o.provider && `, ${o.provider}`}
                        {o.rating && ` ★ ${o.rating}`}
                      </span>
                    </span>
                    <span className="bo-status" style={{ ['--dot' as string]: o.status === 'CANCELLED' ? 'var(--bc-danger)' : o.status === 'DONE' || o.status === 'COMPLETED' ? 'var(--bc-ok)' : 'var(--bc-accent)' }}>
                      {statusText(o.status)}
                    </span>
                    {o.total != null && (
                      <span style={{ textAlign: 'right', minWidth: 96 }}>
                        <b className="bo-num">{amd(o.total)}</b>
                        <span className="bo-small bo-muted" style={{ display: 'block' }}>
                          {shared(`payment.${o.paymentStatus}`)}
                        </span>
                      </span>
                    )}
                  </li>
                ))}
              </ul>
            )}
          </section>
        </div>

        <div className="bo-col">
          {d.money && (
            <section className="bo-panel bo-money-card">
              <span className="bo-label" style={{ color: 'inherit', opacity: 0.75 }}>
                {t('card.money')}
              </span>
              <div className="bo-bignum" style={{ margin: '6px 0 8px' }}>
                {amd(d.money.total)}
              </div>
              <div className="bo-small" style={{ display: 'flex', gap: 16, flexWrap: 'wrap' }}>
                <span>
                  {t('card.fromSubs')} <b className="bo-num">{amd(d.money.subs)}</b>
                </span>
                <span>
                  {t('card.fromOrders')} <b className="bo-num">{amd(d.money.orders)}</b>
                </span>
              </div>
            </section>
          )}

          <TagsAndNote id={d.id} tags={d.tags} note={d.adminNote ?? ''} />

          <section className="bo-panel">
            <div className="bo-panel__head">
              <h2 className="bo-h2">{t('card.profile')}</h2>
            </div>
            <dl className="bo-kv">
              <dt>{t('card.source')}</dt>
              <dd>{sourceLabel(t, d)}</dd>
              {d.agency && (
                <>
                  <dt>{t('card.agency')}</dt>
                  <dd>
                    {d.agency.name}
                    {d.agencyAttachedAt && <span className="bo-faint"> ({date(d.agencyAttachedAt)})</span>}
                  </dd>
                </>
              )}
              <dt>{t('card.language')}</dt>
              <dd>{d.locale.toUpperCase()}</dd>
              {d.segment && (
                <>
                  <dt>{t('card.segment')}</dt>
                  <dd>{t(`segment.${d.segment}`)}</dd>
                </>
              )}
              <dt>{t('card.consent')}</dt>
              <dd>{d.consentAt ? date(d.consentAt) : t('ui.no')}</dd>
            </dl>
          </section>

          <section className="bo-panel">
            <div className="bo-panel__head">
              <h2 className="bo-h2">{t('card.stats')}</h2>
            </div>
            <div className="bo-stats">
              {(
                [
                  ['cardUsages', d.counts.cardUsages],
                  ['concierge', d.counts.concierge],
                  ['requests', d.counts.requests],
                  ['leads', d.counts.leads],
                ] as [string, number][]
              ).map(([k, n]) => (
                <div key={k}>
                  <b>{n}</b>
                  <span className="bo-small bo-muted">{t(`stat.${k}` as BoKey)}</span>
                </div>
              ))}
            </div>
          </section>

          <section className="bo-panel">
            <div className="bo-panel__head">
              <h2 className="bo-h2">{t('card.activity')}</h2>
            </div>
            {d.history.length === 0 ? (
              <p className="bo-hint">{t('card.noActivity')}</p>
            ) : (
              <ul className="bo-list">
                {d.history.map((h) => (
                  <li key={h.id} style={{ alignItems: 'flex-start' }}>
                    <span className="bo-feed__time">{dateTime(h.at)}</span>
                    <span className="bo-grow" style={{ whiteSpace: 'normal' }}>
                      <b>{h.by ?? '—'}</b> {actionLabel(t, h.action)}
                    </span>
                  </li>
                ))}
              </ul>
            )}
          </section>
        </div>
      </div>

      {dlg && <SubDialog clientId={d.id} mode={dlg.mode} sub={dlg.sub} current={current} onClose={() => setDlg(null)} />}
    </>
  );
}

function TagsAndNote({ id, tags, note }: { id: string; tags: string[]; note: string }) {
  const { t } = useT();
  const trpc = useTRPC();
  const qc = useQueryClient();
  const toast = useToast();
  const [draftTag, setDraftTag] = useState('');
  const [text, setText] = useState(note);
  useEffect(() => {
    setText(note);
  }, [note]);
  const facets = useQuery(trpc.bo.clients.facets.queryOptions());
  const refresh = () => {
    qc.invalidateQueries({ queryKey: trpc.bo.clients.get.queryKey({ id }) });
    qc.invalidateQueries({ queryKey: trpc.bo.clients.facets.queryKey() });
    qc.invalidateQueries({ queryKey: trpc.bo.clients.list.queryKey() });
  };
  const setTags = useMutation(trpc.bo.clients.setTags.mutationOptions({ onSuccess: refresh, onError: (e) => toast(errText(t, e), 'error') }));
  const setNote = useMutation(
    trpc.bo.clients.setNote.mutationOptions({
      onSuccess: () => {
        refresh();
        toast(t('card.saved'));
      },
      onError: (e) => toast(errText(t, e), 'error'),
    }),
  );
  const add = () => {
    const v = draftTag.trim();
    if (v && !tags.includes(v)) setTags.mutate({ id, tags: [...tags, v] });
    setDraftTag('');
  };
  const suggestions = (facets.data?.tags ?? []).map((x) => x.tag).filter((x) => !tags.includes(x));

  return (
    <section className="bo-panel">
      <div className="bo-panel__head">
        <h2 className="bo-h2">{t('card.tags')}</h2>
      </div>
      <div className="bo-tags" style={{ marginBottom: 10 }}>
        {tags.map((tg) => (
          <span key={tg} className="bo-tag" style={{ background: 'var(--bc-learn)', color: 'var(--bc-learn-ink)' }}>
            {tg}
            <button type="button" aria-label={`× ${tg}`} onClick={() => setTags.mutate({ id, tags: tags.filter((x) => x !== tg) })}>
              ×
            </button>
          </span>
        ))}
      </div>
      <form
        style={{ display: 'flex', gap: 8 }}
        onSubmit={(e) => {
          e.preventDefault();
          add();
        }}
      >
        <input className="bo-input" list={`tags-${id}`} value={draftTag} onChange={(e) => setDraftTag(e.target.value)} placeholder={t('card.addTag')} maxLength={40} style={{ minHeight: 36, padding: '6px 12px' }} />
        <datalist id={`tags-${id}`}>
          {suggestions.map((s) => (
            <option key={s} value={s} />
          ))}
        </datalist>
        <button type="submit" className="bo-btn bo-btn--sm" disabled={!draftTag.trim()} aria-label={t('card.addTag')}>
          <I name="plus" size={16} />
        </button>
      </form>

      <h3 className="bo-h3" style={{ margin: '20px 0 8px' }}>
        {t('card.note')}
      </h3>
      <textarea className="bo-textarea" value={text} placeholder={t('card.notePh')} onChange={(e) => setText(e.target.value)} maxLength={4000} />
      {text !== note && (
        <button type="button" className="bo-btn bo-btn--sm" style={{ marginTop: 8 }} onClick={() => setNote.mutate({ id, note: text })} disabled={setNote.isPending}>
          {t('ui.save')}
        </button>
      )}
    </section>
  );
}