♻️ Refactored news, mixed feed and call

lib/screens/feed/feed_detail.dart

@@ -0,0 +1,158 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+import 'package:gap/gap.dart';
+import 'package:html/parser.dart';
+import 'package:html2md/html2md.dart' as html2md;
+import 'package:provider/provider.dart';
+import 'package:relative_time/relative_time.dart';
+import 'package:styled_widget/styled_widget.dart';
+import 'package:surface/providers/sn_network.dart';
+import 'package:surface/types/news.dart';
+import 'package:surface/widgets/dialog.dart';
+import 'package:surface/widgets/markdown_content.dart';
+import 'package:surface/widgets/navigation/app_scaffold.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import 'package:url_launcher/url_launcher_string.dart';
+
+class ReaderPageScreen extends StatefulWidget {
+  final String id;
+
+  const ReaderPageScreen({super.key, required this.id});
+
+  @override
+  State<ReaderPageScreen> createState() => _ReaderPageScreenState();
+}
+
+class _ReaderPageScreenState extends State<ReaderPageScreen> {
+  SnSubscriptionItem? _article;
+
+  Future<void> _fetchArticle() async {
+    try {
+      final sn = context.read<SnNetworkProvider>();
+      final resp = await sn.client.get('/cgi/re/subscriptions/${widget.id}');
+      _article = SnSubscriptionItem.fromJson(resp.data);
+    } catch (err) {
+      if (!mounted) return;
+      context.showErrorDialog(err).then((_) {
+        if (!mounted) return;
+        Navigator.pop(context);
+      });
+    } finally {
+      setState(() {});
+    }
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    _fetchArticle();
+  }
+
+  bool _isReadingFromReader = true;
+
+  @override
+  Widget build(BuildContext context) {
+    return AppScaffold(
+      appBar: AppBar(
+        leading: const PageBackButton(),
+        title: Text(_article?.title ?? 'loading'.tr()),
+      ),
+      body: Column(
+        children: [
+          MaterialBanner(
+            dividerColor: Colors.transparent,
+            leading: const Icon(Icons.info),
+            content: Text(_isReadingFromReader
+                ? 'newsReadingFromReader'.tr()
+                : 'newsReadingFromOriginal'.tr()),
+            actions: [
+              TextButton(
+                child: Text('newsReadingProviderSwap').tr(),
+                onPressed: () {
+                  setState(() => _isReadingFromReader = !_isReadingFromReader);
+                },
+              ),
+            ],
+          ),
+          if (_article != null && _isReadingFromReader)
+            Expanded(
+              child: Container(
+                constraints: BoxConstraints(maxWidth: 640),
+                child: SingleChildScrollView(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    spacing: 8,
+                    children: [
+                      Text(_article!.title,
+                          style: Theme.of(context).textTheme.titleLarge),
+                      Builder(builder: (context) {
+                        final htmlDescription = parse(_article!.description);
+                        return Text(
+                          htmlDescription.children
+                              .map((ele) => ele.text.trim())
+                              .join(),
+                          style: Theme.of(context).textTheme.bodyMedium,
+                        );
+                      }),
+                      Builder(builder: (context) {
+                        final date =
+                            _article!.publishedAt ?? _article!.createdAt;
+                        return Row(
+                          spacing: 2,
+                          children: [
+                            Text(DateFormat().format(date)).textStyle(
+                                Theme.of(context).textTheme.bodySmall!),
+                            Text(' · ')
+                                .textStyle(
+                                    Theme.of(context).textTheme.bodySmall!)
+                                .bold(),
+                            Text(RelativeTime(context).format(date)).textStyle(
+                                Theme.of(context).textTheme.bodySmall!),
+                          ],
+                        ).opacity(0.75);
+                      }),
+                      Text('newsDisclaimer')
+                          .tr()
+                          .textStyle(Theme.of(context).textTheme.bodySmall!)
+                          .opacity(0.75),
+                      const Divider(),
+                      MarkdownTextContent(
+                        textScaler: TextScaler.linear(1.2),
+                        content: html2md.convert(_article!.content),
+                      ),
+                      const Divider(),
+                      InkWell(
+                        child: Row(
+                          mainAxisSize: MainAxisSize.min,
+                          children: [
+                            Text(
+                              'Reference from original website',
+                              style: TextStyle(
+                                  decoration: TextDecoration.underline),
+                            ),
+                            const Gap(4),
+                            Icon(Icons.launch, size: 16),
+                          ],
+                        ).opacity(0.85),
+                        onTap: () {
+                          launchUrlString(_article!.url);
+                        },
+                      ),
+                      Gap(MediaQuery.of(context).padding.bottom),
+                    ],
+                  ).padding(horizontal: 12, vertical: 16),
+                ),
+              ).center(),
+            )
+          else if (_article != null)
+            Expanded(
+              child: InAppWebView(
+                key: GlobalKey(),
+                initialUrlRequest: URLRequest(url: WebUri(_article!.url)),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+}