import { Download, FileUp } from 'lucide-preact';
import { useEffect, useState } from 'preact/hooks';
import type { RecommendedProvider } from '@/lib/backup-recommendations';
import { hasLinkedStorages } from '@/lib/backup-recommendations';
import { t } from '@/lib/i18n';
import { BackupIncludeAttachmentsField } from './BackupIncludeAttachmentsField';

const MOBILE_RECOMMENDATIONS_QUERY = '(max-width: 760px)';

interface BackupOperationsSidebarProps {
  disableWhileBusy: boolean;
  exporting: boolean;
  importing: boolean;
  exportIncludeAttachments: boolean;
  selectedProviderId: string | null;
  recommendedWebDavProviders: RecommendedProvider[];
  recommendedS3Providers: RecommendedProvider[];
  onExport: () => void;
  onImport: () => void;
  onExportIncludeAttachmentsChange: (checked: boolean) => void;
  onSelectProvider: (providerId: string) => void;
}

function getDefaultRecommendationsOpen() {
  if (typeof window === 'undefined' || typeof window.matchMedia !== 'function') {
    return true;
  }
  return !window.matchMedia(MOBILE_RECOMMENDATIONS_QUERY).matches;
}

export function BackupOperationsSidebar(props: BackupOperationsSidebarProps) {
  const [recommendationsOpen, setRecommendationsOpen] = useState(getDefaultRecommendationsOpen);
  const [recommendationsTouched, setRecommendationsTouched] = useState(false);

  useEffect(() => {
    if (typeof window === 'undefined' || typeof window.matchMedia !== 'function' || recommendationsTouched) {
      return;
    }

    const media = window.matchMedia(MOBILE_RECOMMENDATIONS_QUERY);
    const syncOpenState = () => setRecommendationsOpen(!media.matches);

    syncOpenState();
    media.addEventListener('change', syncOpenState);
    return () => media.removeEventListener('change', syncOpenState);
  }, [recommendationsTouched]);

  return (
    <aside className="backup-operations-sidebar">
      <div className="section-head">
        <h3>{t('txt_backup_manual')}</h3>
      </div>
      <div className="backup-actions-stack">
        <button type="button" className="btn btn-primary" disabled={props.disableWhileBusy} onClick={props.onExport}>
          <Download size={14} className="btn-icon" />
          {props.exporting ? t('txt_backup_exporting') : t('txt_backup_export')}
        </button>
        <BackupIncludeAttachmentsField
          checked={props.exportIncludeAttachments}
          disabled={props.disableWhileBusy}
          showHelp={false}
          onChange={props.onExportIncludeAttachmentsChange}
        />
        <button type="button" className="btn btn-secondary" disabled={props.disableWhileBusy} onClick={props.onImport}>
          <FileUp size={14} className="btn-icon" />
          {props.importing ? t('txt_backup_restoring') : t('txt_backup_import')}
        </button>
      </div>

      <details
        className="backup-recommendations-disclosure"
        open={recommendationsOpen}
        onToggle={(event) => {
          setRecommendationsTouched(true);
          setRecommendationsOpen((event.currentTarget as HTMLDetailsElement).open);
        }}
      >
        <summary className="backup-recommendations-summary">
          <span>
            <strong>{t('txt_backup_recommend_title')}</strong>
            <small>{t('txt_backup_recommend_group_webdav')} · {t('txt_backup_recommend_group_s3')}</small>
          </span>
          <span className="backup-recommendations-summary-icon" aria-hidden="true" />
        </summary>

        <div className="backup-recommendations-body">
          <div className="backup-recommendation-group">
            <h4 className="backup-recommendation-group-title">{t('txt_backup_recommend_group_webdav')}</h4>
            <div className="backup-recommendation-list">
              {props.recommendedWebDavProviders.map((provider) => (
                <button
                  key={provider.id}
                  type="button"
                  className={`backup-destination-item ${props.selectedProviderId === provider.id ? 'active' : ''}`}
                  onClick={() => props.onSelectProvider(provider.id)}
                >
                  <span className="backup-recommendation-row">
                    <span className="backup-destination-name">{provider.name}</span>
                    <span className="backup-destination-meta">{provider.capacity}</span>
                  </span>
                  {hasLinkedStorages(provider) && provider.linkedStorages.length ? (
                    <span className="backup-recommendation-linked">
                      {provider.linkedStorages.map((storage) => (
                        <span key={`${provider.id}-${storage.name}`} className="backup-recommendation-linked-item">
                          <span>{storage.name}</span>
                          <span>{storage.capacity}</span>
                        </span>
                      ))}
                    </span>
                  ) : null}
                </button>
              ))}
            </div>
          </div>
          <div className="backup-recommendation-group">
            <h4 className="backup-recommendation-group-title">{t('txt_backup_recommend_group_s3')}</h4>
            {props.recommendedS3Providers.length ? (
          <div className="backup-recommendation-list">
            {props.recommendedS3Providers.map((provider) => (
              <button
                key={provider.id}
                type="button"
                className={`backup-destination-item ${props.selectedProviderId === provider.id ? 'active' : ''}`}
                onClick={() => props.onSelectProvider(provider.id)}
              >
                <span className="backup-recommendation-row">
                  <span className="backup-destination-name">{provider.name}</span>
                  <span className="backup-destination-meta">{provider.capacity}</span>
                </span>
              </button>
            ))}
          </div>
            ) : (
              <div className="backup-browser-empty">{t('txt_backup_recommend_empty')}</div>
            )}
          </div>
        </div>
      </details>
    </aside>
  );
}