/**
 * AIUIControlIndicator — Visual indication when AI is controlling the UI.
 *
 * Task 4.11: Visuelle KI-Indikation
 * When AI executes an action: highlight effect + toast "KI führt Aktion aus...".
 * User sees that AI is acting.
 */

import React, { useEffect } from 'react';
import { Bot, X } from 'lucide-react';
import { useAIUIControlStore } from '@/store/aiUIControlStore';
import { useUIStore } from '@/store/uiStore';
import { useTranslation } from 'react-i18next';

export function AIUIControlIndicator() {
  const { t } = useTranslation();
  const aiActive = useAIUIControlStore((s) => s.aiActive);
  const activeCommand = useAIUIControlStore((s) => s.activeCommand);
  const clearPending = useAIUIControlStore((s) => s.clearPending);
  const addToast = useUIStore((s) => s.addToast);

  // Show toast when a new command starts
  useEffect(() => {
    if (aiActive && activeCommand) {
      const desc = activeCommand.description || t(`ai.uiControl.${actionToKey(activeCommand.action)}`, getCommandFallback(activeCommand.action));
      addToast({
        type: 'info',
        message: `${t('ai.uiControl.executing', 'KI führt Aktion aus')}: ${desc}`,
        duration: 4000,
      });
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [aiActive, activeCommand?.command_id]);

  if (!aiActive) return null;

  return (
    <div
      className="fixed top-4 right-4 z-50 flex items-center gap-2 rounded-lg border border-primary-300 bg-primary-50 px-4 py-2 shadow-lg animate-pulse"
      data-testid="ai-ui-control-indicator"
      role="status"
      aria-label={t('ai.uiControl.active', 'KI steuert die UI')}
    >
      <Bot className="h-5 w-5 text-primary-600 animate-pulse" aria-hidden="true" />
      <span className="text-sm font-medium text-primary-700">
        {t('ai.uiControl.active', 'KI steuert die UI')}
      </span>
      {activeCommand?.description && (
        <span className="text-xs text-primary-500">
          — {activeCommand.description}
        </span>
      )}
      <button
        onClick={() => clearPending()}
        className="ml-2 text-primary-400 hover:text-primary-600"
        aria-label={t('common.dismiss', 'Schließen')}
      >
        <X className="h-4 w-4" />
      </button>
    </div>
  );
}

function actionToKey(action: string): string {
  const keyMap: Record<string, string> = {
    navigate: 'navigate',
    filter: 'filter',
    open_contact: 'openContact',
    modal: 'modal',
    tab: 'tab',
    settings: 'settings',
  };
  return keyMap[action] || action;
}

function getCommandFallback(action: string): string {
  const fallbacks: Record<string, string> = {
    navigate: 'Navigation',
    filter: 'Filter setzen',
    open_contact: 'Kontakt öffnen',
    modal: 'Dialog öffnen',
    tab: 'Tab wechseln',
    settings: 'Einstellungen ändern',
  };
  return fallbacks[action] || action;
}