Fix User objects not saving, Add support for Parse Files, Anonymous Login

lib/parse.dart

@@ -10,6 +10,8 @@ import 'package:meta/meta.dart';
 import 'package:path/path.dart' as path;
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:web_socket_channel/io.dart';
+import 'package:uuid/uuid.dart';
+import 'package:path_provider/path_provider.dart';
 
 part 'src/base/parse_constants.dart';
 

lib/src/base/parse_constants.dart

@@ -7,6 +7,7 @@ const String keyLibraryName= 'Flutter Parse SDK';
 // End Points
 const String keyEndPointUserName = '/users/me';
 const String keyEndPointLogin = '/login';
+const String keyEndPointUsers = '/users';
 const String keyEndPointVerificationEmail = '/verificationEmailRequest';
 const String keyEndPointRequestPasswordReset = '/requestPasswordReset';
 const String keyEndPointClasses = '/classes/';

lib/src/enums/parse_enum_api_rq.dart

@@ -12,6 +12,7 @@ enum ParseApiRQ {
   currentUser,
   signUp,
   login,
+  loginAnonymous,
   verificationEmailRequest,
   requestPasswordReset,
   destroy,

lib/src/objects/parse_file.dart

@@ -13,6 +13,12 @@ class ParseFile extends ParseObject {
 
   String get url => _fileUrl;
 
+  File get file => _file;
+
+  set url(String url) => _fileUrl = url;
+
+  set name(String name) => _fileName = name;
+
   bool get saved => url != null;
 
   @override
@@ -24,12 +30,53 @@ class ParseFile extends ParseObject {
   /// Creates a new file
   ///
   /// {https://docs.parseplatform.org/rest/guide/#files/}
-  ParseFile(this._file, {bool debug, ParseHTTPClient client}) : super (keyFile){
+  ParseFile(this._file, {String name, String url, bool debug, ParseHTTPClient client}) : super (keyFile){
     client == null ? _client = ParseHTTPClient() : _client = client;
     _debug = isDebugEnabled(objectLevelDebug: debug);
+    if(_file != null) {
+      this._fileName = path.basename(_file.path);
+      this._path = 'files/$_fileName';
+    }
+    else {
+      this._fileName = name;
+      this._fileUrl = url;
+    }
+  }
+
+  Future<ParseFile> loadStorage() async {
+    Directory tempPath = await getTemporaryDirectory();
+
+    if(_fileName == null) {
+      _file = null;
+      return this;
+    }
+
+    File possibleFile = new File("${tempPath.path}/$_fileName");
+    bool exists = await possibleFile.exists();
+
+    if(exists) {
+      _file = possibleFile;
+    }
+    else {
+      _file = null;
+    }
+
+    return this;
+  }
+
+  Future<ParseFile> download() async {
+    if(_fileUrl == null) {
+      return this;
+    }
+
+    Directory tempPath = await getTemporaryDirectory();
+    this._file = new File("${tempPath.path}/$_fileName");
+    await _file.create();
+
+    var response = await _client.get(_fileUrl);
+    _file.writeAsBytes(response.bodyBytes);
 
-    this._fileName = path.basename(_file.path);
-    this._path = 'files/$_fileName';
+    return this;
   }
 
   /// Uploads a file to Parse Server
@@ -48,4 +95,4 @@ class ParseFile extends ParseObject {
     final response = await _client.post(uri, headers: headers, body: body);
     return super.handleResponse<ParseFile>(response, ParseApiRQ.upload);
   }
-}
+}

lib/src/objects/parse_user.dart

@@ -155,6 +155,37 @@ class ParseUser extends ParseObject implements ParseCloneable {
     }
   }
 
+  // Logs in a user anonymously
+  Future<ParseResponse> loginAnonymous() async {
+    try {
+       Uri tempUri = Uri.parse(_client.data.serverUrl);
+
+      Uri url = Uri(
+          scheme: tempUri.scheme,
+          host: tempUri.host,
+          path: "${tempUri.path}$keyEndPointUsers",
+          );
+
+      var uuid = new Uuid();
+
+      final response = await _client.post(url, headers: {
+        keyHeaderRevocableSession: "1",
+
+      }, body: jsonEncode({
+        "authData": {
+          "anonymous": {
+            "id": uuid.v4()
+          }
+        }
+      }));
+
+      return _handleResponse(response, ParseApiRQ.loginAnonymous);
+    }
+    on Exception catch (e) {
+      return _handleException(e, ParseApiRQ.loginAnonymous);
+    }
+  }
+
   /// Removes the current user from the session data
   logout() {
     _client.data.sessionId = null;
@@ -198,7 +229,9 @@ class ParseUser extends ParseObject implements ParseCloneable {
         var uri = _client.data.serverUrl + "$path/$objectId";
         var body =
             json.encode(toJson(forApiRQ: true), toEncodable: dateTimeEncoder);
-        final response = await _client.put(uri, body: body);
+        final response = await _client.put(uri, 
+            headers: {keyHeaderSessionToken: _client.data.sessionId}, 
+            body: body);
         return _handleResponse(response, ParseApiRQ.save);
       } on Exception catch (e) {
         return _handleException(e, ParseApiRQ.save);

lib/src/utils/parse_decoder.dart

@@ -64,7 +64,7 @@ dynamic parseDecode(dynamic value) {
       }
       return ParseObject(className).fromJson(map);
     case "File":
-      return new ParseFile(null).fromJson(map);
+      return new ParseFile(null, url: map["url"], name: map["name"]).fromJson(map);
     case "GeoPoint":
       num latitude = map["latitude"] ?? 0.0;
       num longitude = map["longitude"] ?? 0.0;

pubspec.yaml

@@ -17,4 +17,5 @@ dependencies:
 
   # Utils
   shared_preferences: ^0.4.3
-  path_provider: ^0.4.1
+  path_provider: ^0.4.1
+  uuid: ^1.0.0