feat(gitee): add tree screen

lib/models/gitee.dart

@@ -50,6 +50,7 @@ class GiteeRepo {
   String homepage;
   int openIssuesCount;
   bool pullRequestsEnabled;
+  String defaultBranch;
   GiteeRepo();
   factory GiteeRepo.fromJson(Map<String, dynamic> json) =>
       _$GiteeRepoFromJson(json);
@@ -102,3 +103,14 @@ class GiteeCommitAuthor {
   factory GiteeCommitAuthor.fromJson(Map<String, dynamic> json) =>
       _$GiteeCommitAuthorFromJson(json);
 }
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class GiteeTreeItem {
+  String path;
+  String type;
+  String sha;
+  int size;
+  GiteeTreeItem();
+  factory GiteeTreeItem.fromJson(Map<String, dynamic> json) =>
+      _$GiteeTreeItemFromJson(json);
+}

lib/router.dart

@@ -9,6 +9,7 @@ import 'package:git_touch/screens/code_theme.dart';
 import 'package:git_touch/screens/ge_commits.dart';
 import 'package:git_touch/screens/ge_repo.dart';
 import 'package:git_touch/screens/ge_repos.dart';
+import 'package:git_touch/screens/ge_tree.dart';
 import 'package:git_touch/screens/ge_user.dart';
 import 'package:git_touch/screens/ge_users.dart';
 import 'package:git_touch/screens/gh_commits.dart';
@@ -386,6 +387,7 @@ class GiteeRouter {
     GiteeRouter.watchers,
     GiteeRouter.forks,
     GiteeRouter.commits,
+    GiteeRouter.tree,
   ];
   static final user = RouterScreen('/:login', (context, p) {
     final login = p['login'].first;
@@ -422,4 +424,11 @@ class GiteeRouter {
     '/:owner/:name/commits',
     (_, p) => GeCommitsScreen(p['owner'].first, p['name'].first),
   );
+  static final tree = RouterScreen(
+    '/:owner/:name/tree/:sha',
+    (context, parameters) {
+      return GeTreeScreen(parameters['owner'].first, parameters['name'].first,
+          parameters['sha'].first);
+    },
+  );
 }

lib/screens/ge_repo.dart

@@ -73,7 +73,7 @@ class GeRepoScreen extends StatelessWidget {
                   leftIconData: Octicons.code,
                   text: Text('Code'),
                   rightWidget: Text(p.license ?? ''),
-                  url: '/gitee/$owner/$name/blob',
+                  url: '/gitee/$owner/$name/tree/${p.defaultBranch}',
                 ),
                 TableViewItem(
                   leftIconData: Octicons.issue_opened,

lib/screens/ge_tree.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/cupertino.dart';
+import 'package:git_touch/models/gitee.dart';
+import 'package:git_touch/scaffolds/refresh_stateful.dart';
+import 'package:git_touch/utils/utils.dart';
+import 'package:git_touch/widgets/app_bar_title.dart';
+import 'package:git_touch/widgets/object_tree.dart';
+import 'package:flutter/material.dart';
+import 'package:git_touch/models/auth.dart';
+import 'package:provider/provider.dart';
+
+class GeTreeScreen extends StatelessWidget {
+  final String owner;
+  final String name;
+  final String sha;
+  GeTreeScreen(this.owner, this.name, this.sha);
+
+  @override
+  Widget build(BuildContext context) {
+    return RefreshStatefulScaffold<List<GiteeTreeItem>>(
+      title: AppBarTitle('Files'),
+      fetch: () async {
+        final res = await context
+            .read<AuthModel>()
+            .fetchGitee('/repos/$owner/$name/git/trees/$sha');
+        final items = [for (var v in res['tree']) GiteeTreeItem.fromJson(v)];
+        items.sort((a, b) {
+          return sortByKey('tree', a.type, b.type);
+        });
+        return items;
+      },
+      bodyBuilder: (data, _) {
+        return ObjectTree(
+          items: [
+            for (var item in data)
+              ObjectTreeItem(
+                type: item.type,
+                name: item.path,
+                size: item.size,
+                downloadUrl: '', // TODO:
+                url: (() {
+                  switch (item.type) {
+                    case 'tree':
+                      return '/gitee/$owner/$name/tree/${item.sha}';
+                    case 'blob':
+                      return '/gitee/$owner/$name/blob/${item.sha}';
+                    default:
+                      return null;
+                  }
+                })(),
+              )
+          ],
+        );
+      },
+    );
+  }
+}