/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

import {
  isLoadableSettingScope,
  SettingScope,
  type LoadableSettingScope,
  type Settings,
} from '../config/settings.js';
import { isInSettingsScope } from './settingsUtils.js';

/**
 * Shared scope labels for dialog components that need to display setting scopes
 */
export const SCOPE_LABELS = {
  [SettingScope.User]: 'User Settings',
  [SettingScope.Workspace]: 'Workspace Settings',
  [SettingScope.System]: 'System Settings',
} as const;

/**
 * Helper function to get scope items for radio button selects
 */
export function getScopeItems(): Array<{
  label: string;
  value: LoadableSettingScope;
}> {
  return [
    { label: SCOPE_LABELS[SettingScope.User], value: SettingScope.User },
    {
      label: SCOPE_LABELS[SettingScope.Workspace],
      value: SettingScope.Workspace,
    },
    { label: SCOPE_LABELS[SettingScope.System], value: SettingScope.System },
  ];
}

/**
 * Generate scope message for a specific setting
 */
export function getScopeMessageForSetting(
  settingKey: string,
  selectedScope: LoadableSettingScope,
  settings: {
    forScope: (scope: LoadableSettingScope) => { settings: Settings };
  },
): string {
  const otherScopes = Object.values(SettingScope)
    .filter(isLoadableSettingScope)
    .filter((scope) => scope !== selectedScope);

  const modifiedInOtherScopes = otherScopes.filter((scope) => {
    const scopeSettings = settings.forScope(scope).settings;
    return isInSettingsScope(settingKey, scopeSettings);
  });

  if (modifiedInOtherScopes.length === 0) {
    return '';
  }

  const modifiedScopesStr = modifiedInOtherScopes.join(', ');
  const currentScopeSettings = settings.forScope(selectedScope).settings;
  const existsInCurrentScope = isInSettingsScope(
    settingKey,
    currentScopeSettings,
  );

  return existsInCurrentScope
    ? `(Also modified in ${modifiedScopesStr})`
    : `(Modified in ${modifiedScopesStr})`;
}
