import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:syncfusion_flutter_pdfviewer/pdfviewer.dart';
import 'package:url_launcher/url_launcher.dart';

import '../../../api/marianumconnect/queries/get_newsletter_file/get_newsletter_file.dart';
import '../../../widget/app_progress_indicator.dart';
import '../../../widget/confirm_dialog.dart';
import '../../../widget/placeholder_view.dart';

class MessageView extends StatefulWidget {
  final String id;
  final String title;
  const MessageView({super.key, required this.id, required this.title});

  @override
  State<MessageView> createState() => _MessageViewState();
}

class _MessageViewState extends State<MessageView> {
  late final Future<Uint8List> _pdf = GetNewsletterFile(widget.id).run();

  @override
  Widget build(BuildContext context) => Scaffold(
    appBar: AppBar(title: Text(widget.title)),
    body: FutureBuilder<Uint8List>(
      future: _pdf,
      builder: (context, snapshot) {
        if (snapshot.hasError) {
          return const PlaceholderView(
            icon: Icons.error_outline,
            text: 'Das Dokument konnte nicht geladen werden.',
          );
        }
        if (!snapshot.hasData) {
          return const Center(child: AppProgressIndicator.large());
        }
        return SfPdfViewer.memory(
          snapshot.data!,
          enableHyperlinkNavigation: true,
          onHyperlinkClicked: (PdfHyperlinkClickedDetails e) {
            showDialog(
              context: context,
              builder: (context) => ConfirmDialog(
                title: 'Link öffnen',
                content: 'Möchtest du den folgenden Link öffnen?\n${e.uri}',
                confirmButton: 'Öffnen',
                onConfirm: () => launchUrl(
                  Uri.parse(e.uri),
                  mode: LaunchMode.externalApplication,
                ),
              ),
            );
          },
        );
      },
    ),
  );
}