feat(gitlab): group screen

lib/main.dart

@@ -12,6 +12,7 @@ import 'package:git_touch/screens/gitea_repo.dart';
 import 'package:git_touch/screens/gitea_user.dart';
 import 'package:git_touch/screens/gitlab_blob.dart';
 import 'package:git_touch/screens/gitlab_commits.dart';
+import 'package:git_touch/screens/gitlab_group.dart';
 import 'package:git_touch/screens/gitlab_issue.dart';
 import 'package:git_touch/screens/gitlab_issues.dart';
 import 'package:git_touch/screens/gitlab_merge_requests.dart';
@@ -70,6 +71,7 @@ void main() async {
     codeThemeRouter,
     aboutRouter,
     gitlabUserRouter,
+    gitlabGroupRouter,
     gitlabBlobRouter,
     gitlabTreeRouter,
     gitlabProjectRouter,

lib/models/gitlab.dart

@@ -15,6 +15,19 @@ class GitlabUser {
       _$GitlabUserFromJson(json);
 }
 
+@JsonSerializable(fieldRename: FieldRename.snake)
+class GitlabGroup {
+  int id;
+  String path;
+  String name;
+  String avatarUrl;
+  String description;
+  List<GitlabProject> projects;
+  GitlabGroup();
+  factory GitlabGroup.fromJson(Map<String, dynamic> json) =>
+      _$GitlabGroupFromJson(json);
+}
+
 @JsonSerializable(fieldRename: FieldRename.snake)
 class GitlabTodoProject {
   String pathWithNamespace;

lib/models/gitlab.g.dart

@@ -28,6 +28,30 @@ Map<String, dynamic> _$GitlabUserToJson(GitlabUser instance) =>
       'created_at': instance.createdAt?.toIso8601String(),
     };
 
+GitlabGroup _$GitlabGroupFromJson(Map<String, dynamic> json) {
+  return GitlabGroup()
+    ..id = json['id'] as int
+    ..path = json['path'] as String
+    ..name = json['name'] as String
+    ..avatarUrl = json['avatar_url'] as String
+    ..description = json['description'] as String
+    ..projects = (json['projects'] as List)
+        ?.map((e) => e == null
+            ? null
+            : GitlabProject.fromJson(e as Map<String, dynamic>))
+        ?.toList();
+}
+
+Map<String, dynamic> _$GitlabGroupToJson(GitlabGroup instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'path': instance.path,
+      'name': instance.name,
+      'avatar_url': instance.avatarUrl,
+      'description': instance.description,
+      'projects': instance.projects,
+    };
+
 GitlabTodoProject _$GitlabTodoProjectFromJson(Map<String, dynamic> json) {
   return GitlabTodoProject()
     ..pathWithNamespace = json['path_with_namespace'] as String;

lib/screens/gitlab_group.dart

@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:git_touch/models/auth.dart';
+import 'package:git_touch/models/gitlab.dart';
+import 'package:git_touch/scaffolds/refresh_stateful.dart';
+import 'package:git_touch/widgets/repository_item.dart';
+import 'package:git_touch/widgets/user_header.dart';
+import 'package:provider/provider.dart';
+import 'package:tuple/tuple.dart';
+import 'package:git_touch/utils/utils.dart';
+import 'package:timeago/timeago.dart' as timeago;
+
+final gitlabGroupRouter = RouterScreen(
+    '/gitlab/group/:id',
+    (context, parameters) =>
+        GitlabGroupScreen(int.parse(parameters['id'].first)));
+
+class GitlabGroupScreen extends StatelessWidget {
+  final int id;
+  GitlabGroupScreen(this.id);
+
+  @override
+  Widget build(BuildContext context) {
+    return RefreshStatefulScaffold<Tuple2<GitlabGroup, Null>>(
+      title: Text('Group'),
+      fetchData: () async {
+        final auth = Provider.of<AuthModel>(context);
+        final res = await Future.wait([auth.fetchGitlab('/groups/$id')]);
+        return Tuple2(GitlabGroup.fromJson(res[0]), null);
+      },
+      bodyBuilder: (data, _) {
+        final p = data.item1;
+        return Column(
+          children: <Widget>[
+            UserHeader(
+              login: p.path,
+              avatarUrl: p.avatarUrl,
+              name: p.name,
+              createdAt: null,
+              bio: p.description,
+            ),
+            CommonStyle.border,
+            Column(
+              children: <Widget>[
+                for (var v in p.projects)
+                  RepositoryItem.gl(
+                    payload: v,
+                    note: 'Created ${timeago.format(v.createdAt)}',
+                  )
+              ],
+            )
+          ],
+        );
+      },
+    );
+  }
+}

lib/widgets/user_header.dart

@@ -58,6 +58,7 @@ class UserHeader extends StatelessWidget {
             ),
           ),
           SizedBox(height: 8),
+          if (createdAt != null)
             Row(
               children: <Widget>[
                 Icon(