feat(gitee): add token login step

lib/models/auth.dart

@@ -3,6 +3,7 @@ import 'dart:convert';
 import 'dart:async';
 import 'package:git_touch/models/bitbucket.dart';
 import 'package:git_touch/models/gitea.dart';
+import 'package:git_touch/models/gitee.dart';
 import 'package:git_touch/utils/request_serilizer.dart';
 import 'package:github/github.dart';
 import 'package:gql_http_link/gql_http_link.dart';
@@ -26,6 +27,7 @@ class PlatformType {
   static const gitlab = 'gitlab';
   static const bitbucket = 'bitbucket';
   static const gitea = 'gitea';
+  static const gitee = 'gitee';
 }
 
 class DataWithPage<T> {
@@ -314,6 +316,32 @@ class AuthModel with ChangeNotifier {
     );
   }
 
+  Future loginToGitee(String token) async {
+    token = token.trim();
+    try {
+      loading = true;
+      notifyListeners();
+      final res = await http.get('https://gitee.com/api/v5/user',
+          headers: {'Authorization': 'token $token'});
+      final info = json.decode(res.body);
+      if (info['message'] != null) {
+        throw info['message'];
+      }
+      final user = GiteeUser.fromJson(info);
+
+      await _addAccount(Account(
+        platform: PlatformType.gitea,
+        domain: 'https://gitee.com',
+        token: token,
+        login: user.login,
+        avatarUrl: user.avatarUrl,
+      ));
+    } finally {
+      loading = false;
+      notifyListeners();
+    }
+  }
+
   Future<void> init() async {
     // Listen scheme
     _sub = getUriLinksStream().listen(_onSchemeDetected, onError: (err) {

lib/models/gitee.dart

@@ -0,0 +1,12 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'gitee.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class GiteeUser {
+  String login;
+  String avatarUrl;
+  GiteeUser();
+  factory GiteeUser.fromJson(Map<String, dynamic> json) =>
+      _$GiteeUserFromJson(json);
+}

lib/models/gitee.g.dart

@@ -0,0 +1,18 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'gitee.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+GiteeUser _$GiteeUserFromJson(Map<String, dynamic> json) {
+  return GiteeUser()
+    ..login = json['login'] as String
+    ..avatarUrl = json['avatar_url'] as String;
+}
+
+Map<String, dynamic> _$GiteeUserToJson(GiteeUser instance) => <String, dynamic>{
+      'login': instance.login,
+      'avatar_url': instance.avatarUrl,
+    };

lib/screens/login.dart

@@ -293,6 +293,24 @@ class _LoginScreenState extends State<LoginScreen> {
                       }
                     },
                   ),
+                  _buildAddItem(
+                    text: 'Gitee Account',
+                    brand: Octicons.git_branch, // TODO: brand icon
+                    onTap: () async {
+                      final result = await theme.showConfirm(
+                        context,
+                        _buildPopup(context),
+                      );
+                      if (result == true) {
+                        try {
+                          await auth.loginToGitee(_tokenController.text);
+                          _tokenController.clear();
+                        } catch (err) {
+                          showError(err);
+                        }
+                      }
+                    },
+                  ),
                   Container(
                     padding: CommonStyle.padding,
                     child: Text(