import React from 'react';
import { formatBytes, formatRelative } from '../utils/format.js';

function StatusRow({ label, value, kind }) {
  return (
    <div className="row">
      <span className="key">{label}</span>
      <span className={`val ${kind ? 'text-' + kind : ''}`}>{value}</span>
    </div>
  );
}

export function StatusPane({ state, busy, onStop, onRestart, onShowConfig }) {
  const userInfo = state?.userInfo;
  const traffic = userInfo
    ? `${formatBytes((userInfo.upload || 0) + (userInfo.download || 0))} / ${userInfo.total ? formatBytes(userInfo.total) : '∞'}`
    : '—';

  let singboxStatus = 'Остановлен';
  let singboxKind = 'muted';
  if (state?.singboxRunning) {
    singboxStatus = `работает · ${formatRelative(state.singboxStartedAt)}`;
    singboxKind = 'success';
  } else if (state?.configExists) {
    singboxStatus = 'остановлен (конфиг есть)';
    singboxKind = 'warning';
  }

  return (
    <aside className="status-pane">
      <div className="card compact flat">
        <div className="card-header no-margin">
          <h3>sing-box</h3>
          <span className={`badge ${state?.singboxRunning ? 'success' : 'neutral'}`}>
            {state?.singboxRunning ? '● online' : '○ offline'}
          </span>
        </div>
        <div className="kv-list" style={{ marginTop: 12 }}>
          <StatusRow label="Статус" value={singboxStatus} kind={singboxKind} />
          <StatusRow label="UI порт" value={`:${state?.port || 3456}`} />
          <StatusRow label="Mixed proxy" value={`${state?.proxyBindIp || '0.0.0.0'}:${state?.proxyPort || 8080}`} />
          <StatusRow label="TProxy" value={`:${state?.tproxyPort || 7895}`} />
          <StatusRow label="RU direct" value={state?.routingRuDirect ? 'включено' : 'выключено'} />
          <StatusRow label="Трафик" value={traffic} />
          <StatusRow
            label="Применено"
            value={state?.appliedAt ? formatRelative(state.appliedAt) : 'не применено'}
          />
        </div>

        <div className="btn-group" style={{ marginTop: 12, display: 'flex', flexDirection: 'column', gap: 6 }}>
          <button
            className="btn btn-secondary sm block"
            disabled={busy || !state?.configExists}
            onClick={onRestart}
          >
            ↻ Перезапустить
          </button>
          <button
            className="btn btn-ghost sm block"
            disabled={busy || !state?.singboxRunning}
            onClick={onStop}
          >
            ■ Остановить
          </button>
          <button
            className="btn btn-ghost sm block"
            disabled={!state?.configExists}
            onClick={onShowConfig}
          >
            ⌘ Показать config
          </button>
        </div>
      </div>

      {state?.appliedHistory?.length > 0 && (
        <div className="card compact flat">
          <h4 style={{ marginBottom: 8 }}>История применений</h4>
          <div className="events-list">
            {state.appliedHistory.slice(0, 5).map((h) => (
              <div key={h.at} className="event-row" style={{ gridTemplateColumns: '1fr auto' }}>
                <span className="text-truncate">{h.tag}</span>
                <span className="event-time">{formatRelative(h.at)}</span>
              </div>
            ))}
          </div>
        </div>
      )}
    </aside>
  );
}