GitSetup: Use the 'journal' repo if it already exists

lib/apis/githost.dart

@@ -9,14 +9,20 @@ abstract class GitHost {
   Future<UserInfo> getUserInfo();
   Future<List<GitRepo>> listRepos();
   Future<GitRepo> createRepo(String name);
+  Future<GitRepo> getRepo(String name);
   Future addDeployKey(String sshPublicKey, String repo);
 }
 
 class UserInfo {
   String name;
   String email;
+  String username;
 
-  UserInfo({@required this.name, @required this.email});
+  UserInfo({
+    @required this.name,
+    @required this.email,
+    @required this.username,
+  });
 }
 
 class GitRepo {
@@ -37,6 +43,7 @@ class GitHostException implements Exception {
   static const RepoExists = const GitHostException("RepoExists");
   static const CreateRepoFailed = const GitHostException("CreateRepoFailed");
   static const DeployKeyFailed = const GitHostException("DeployKeyFailed");
+  static const GetRepoFailed = const GitHostException("GetRepoFailed");
 
   final String cause;
   const GitHostException(this.cause);

lib/apis/github.dart

@@ -106,7 +106,6 @@ class GitHub implements GitHost {
 
   @override
   Future<GitRepo> createRepo(String name) async {
-    // FIXME: Proper error when the repo exists!
     if (_accessCode.isEmpty) {
       throw GitHostException.MissingAccessCode;
     }
@@ -143,7 +142,32 @@ class GitHub implements GitHost {
     return _repoFromJson(map);
   }
 
-  // FIXME: Proper error when the repo exists!
+  @override
+  Future<GitRepo> getRepo(String name) async {
+    if (_accessCode.isEmpty) {
+      throw GitHostException.MissingAccessCode;
+    }
+
+    var userInfo = await getUserInfo();
+    var owner = userInfo.username;
+    var url =
+        "https://api.github.com/repos/$owner/$name?access_token=$_accessCode";
+
+    var response = await http.get(url);
+    if (response.statusCode != 200) {
+      print("Github getRepo: Invalid response " +
+          response.statusCode.toString() +
+          ": " +
+          response.body);
+
+      throw GitHostException.GetRepoFailed;
+    }
+
+    print("GitHub getRepo: " + response.body);
+    Map<String, dynamic> map = json.decode(response.body);
+    return _repoFromJson(map);
+  }
+
   @override
   Future addDeployKey(String sshPublicKey, String repo) async {
     if (_accessCode.isEmpty) {
@@ -210,6 +234,10 @@ class GitHub implements GitHost {
       return null;
     }
 
-    return UserInfo(name: map['name'], email: map['email']);
+    return UserInfo(
+      name: map['name'],
+      email: map['email'],
+      username: map['login'],
+    );
   }
 }

lib/apis/gitlab.dart

@@ -95,7 +95,6 @@ class GitLab implements GitHost {
 
   @override
   Future<GitRepo> createRepo(String name) async {
-    // FIXME: Proper error when the repo exists!
     if (_accessCode.isEmpty) {
       throw GitHostException.MissingAccessCode;
     }
@@ -132,6 +131,32 @@ class GitLab implements GitHost {
     return _repoFromJson(map);
   }
 
+  @override
+  Future<GitRepo> getRepo(String name) async {
+    if (_accessCode.isEmpty) {
+      throw GitHostException.MissingAccessCode;
+    }
+
+    var userInfo = await getUserInfo();
+    var repo = userInfo.username + '%2F' + name;
+    var url =
+        "https://gitlab.com/api/v4/projects/$repo?access_token=$_accessCode";
+
+    var response = await http.get(url);
+    if (response.statusCode != 200) {
+      print("GitLab getRepo: Invalid response " +
+          response.statusCode.toString() +
+          ": " +
+          response.body);
+
+      throw GitHostException.GetRepoFailed;
+    }
+
+    print("GitLab getRepo: " + response.body);
+    Map<String, dynamic> map = json.decode(response.body);
+    return _repoFromJson(map);
+  }
+
   @override
   Future addDeployKey(String sshPublicKey, String repo) async {
     if (_accessCode.isEmpty) {
@@ -199,7 +224,11 @@ class GitLab implements GitHost {
       return null;
     }
 
-    return UserInfo(name: map['name'], email: map['email']);
+    return UserInfo(
+      name: map['name'],
+      email: map['email'],
+      username: map['username'],
+    );
   }
 }
 

lib/screens/githostsetup_autoconfigure.dart

@@ -54,8 +54,18 @@ class GitHostSetupAutoConfigureState extends State<GitHostSetupAutoConfigure> {
             _message = "Creating private repo";
           });
 
-          // FIXME: What if repo already exists?
+          try {
             repo = await gitHost.createRepo("journal");
+          } on GitHostException catch (e) {
+            if (e.cause != GitHostException.RepoExists.cause) {
+              rethrow;
+            }
+
+            this.setState(() {
+              _message = "Using existing repo";
+            });
+            repo = await gitHost.getRepo("journal");
+          }
 
           this.setState(() {
             _message = "Generating SSH Key";