freezer/lib/ui/external_link_route.dart

import 'package:cookie_jar/cookie_jar.dart';
import 'package:flutter/material.dart';
import 'package:freezer/api/deezer.dart';
import 'package:freezer/settings.dart';
import 'package:webview_flutter/webview_flutter.dart';

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

  @override
  State<ExternalLinkRoute> createState() => _ExternalLinkRouteState();
}

class _ExternalLinkRouteState extends State<ExternalLinkRoute> {
  late final WebViewController _controller;

  @override
  void initState() {
    _controller = WebViewController();
    _initStateAsync();
    super.initState();
  }

  void _initStateAsync() async {
    final uri = _resolveTarget(widget.target);
    final headers = await _resolveHeaders(uri);

    _controller.addJavaScriptChannel('test', onMessageReceived: print);
    _controller.loadRequest(uri, headers: headers);
  }

  Uri _resolveTarget(String target) {
    print('target: $target');
    if (target == 'story/mdy' || target == '/story/mdy') {
      // my deezer year redirect to iframe URL
      return Uri.parse(
          'https://mydeezerstory.deezer.com/inapp?campaign=mdy&lang=${settings.deezerLanguage}');
    }

    // resolve relative to www.deezer.com
    return Uri.https('www.deezer.com', '/us').resolve(target);
  }

  Future<Map<String, String>> _resolveHeaders(Uri uri) async {
    List<Cookie> cookies = await deezerAPI.cookieJar.loadForRequest(uri);
    print(cookies);
    return {'Cookie': cookies.join(';')};
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text(widget.title)),
      body: WebViewWidget(
        controller: _controller,
      ),
    );
  }
}