import { useId } from 'react';
import type { ResolvedApp } from '../types';
import { shortToolTitle } from '../toolPresentation';
import { ModalPanel } from './ModalPanel';

interface AppDetailsPanelProps {
  activeTag: string;
  app: ResolvedApp;
  catalogueUrl: string;
  hidden: boolean;
  pinned: boolean;
  contextualUrl: (entryUrl: string, catalogueUrl: string) => string;
  onCategory: (category: string) => void;
  onClose: () => void;
  onTag: (tag: string) => void;
}

function RequirementSummary({ app }: { app: ResolvedApp }) {
  if (!app.requirements) return null;
  const requirements = [
    app.requirements.secureContext && 'Secure context',
    app.requirements.workers && 'Web workers',
    app.requirements.indexedDb && 'IndexedDB',
    app.requirements.crossOriginIsolated && 'Cross-origin isolation',
  ].filter(Boolean);
  if (requirements.length === 0) return null;
  return <p className="requirements">Needs {requirements.join(' · ')}</p>;
}

function PrivacySummary({ app }: { app: ResolvedApp }) {
  if (!app.privacy)
    return (
      <p className="privacy-summary">
        External destination · review its privacy terms
      </p>
    );
  if (app.privacy.label)
    return <p className="privacy-summary">{app.privacy.label}</p>;
  const processing = {
    local: 'Local processing',
    remote: 'Remote processing',
    mixed: 'Local and remote capabilities',
  }[app.privacy.processing];
  return (
    <p className="privacy-summary">
      {processing} ·{' '}
      {app.privacy.fileUploads
        ? 'file/data transmission declared'
        : 'no file uploads declared'}{' '}
      · {app.privacy.telemetry ? 'telemetry declared' : 'no telemetry declared'}
    </p>
  );
}

export function AppDetailsPanel({
  activeTag,
  app,
  catalogueUrl,
  hidden,
  pinned,
  contextualUrl,
  onCategory,
  onClose,
  onTag,
}: AppDetailsPanelProps) {
  const titleId = useId();
  const launchUrl = app.isExternal
    ? app.entryUrl
    : contextualUrl(app.entryUrl, catalogueUrl);
  const target = app.launchModes.includes('navigate') ? undefined : '_blank';

  return (
    <ModalPanel
      className="app-info-panel"
      labelledBy={titleId}
      onClose={onClose}
    >
      <header className="app-info-panel__header">
        <div className="app-info-panel__identity">
          <div className="app-info-panel__icon" aria-hidden="true">
            {app.iconUrl ? (
              <img src={app.iconUrl} alt="" />
            ) : (
              <span>{app.name.slice(0, 1).toLocaleUpperCase()}</span>
            )}
          </div>
          <div>
            <p className="eyebrow">Tool information</p>
            <div className="title-line">
              <h2 id={titleId}>{app.name}</h2>
              {pinned && <span className="status-chip">Pinned</span>}
              {hidden && (
                <span className="status-chip status-chip--muted">Hidden</span>
              )}
              {app.isExternal && (
                <span className="status-chip status-chip--muted">External</span>
              )}
            </div>
          </div>
        </div>
        <button
          className="close-button"
          type="button"
          aria-label={`Close information for ${app.name}`}
          onClick={onClose}
        >
          ×
        </button>
      </header>

      <div className="app-info-panel__body">
        <p className="app-info-panel__description">{app.description}</p>
        <PrivacySummary app={app} />
        <RequirementSummary app={app} />

        {app.categories.length > 0 && (
          <div className="category-row" role="group" aria-label="Categories">
            {app.categories.slice(0, 3).map((category) => (
              <button
                type="button"
                key={category}
                onClick={() => onCategory(category)}
              >
                {category}
              </button>
            ))}
          </div>
        )}
        {app.tags.length > 0 && (
          <div className="tag-row" role="group" aria-label="Tags">
            {app.tags.map((tag) => (
              <button
                type="button"
                key={tag}
                aria-pressed={activeTag === tag}
                onClick={() => onTag(tag)}
              >
                #{tag}
              </button>
            ))}
          </div>
        )}
      </div>

      <footer className="app-info-panel__footer">
        <div className="app-info-panel__meta">
          <span className="version">
            {app.version ? `v${app.version}` : 'External service'}
          </span>
          {app.sourceUrl && (
            <a
              className="source-link"
              href={app.sourceUrl}
              target="_blank"
              rel="noopener noreferrer"
            >
              Source and license
            </a>
          )}
        </div>
        <a
          className="app-info-panel__launch"
          href={launchUrl}
          target={target}
          rel={target ? 'noopener noreferrer' : undefined}
        >
          Open {shortToolTitle(app)} <span aria-hidden="true">↗</span>
        </a>
      </footer>
    </ModalPanel>
  );
}