On the fly image conversion

web_native/lib/blocs/home_bloc.dart

@@ -0,0 +1,52 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+
+import 'package:imagini/core/imagini_application.dart';
+import 'package:imagini/api/imagini_api_repository.dart';
+import 'package:imagini/graphql/imagini_graphql.dart';
+
+class HomeBloc{
+
+  final ImaginiApplication _application;
+  ImaginiAPIRepository _imaginiAPI;
+
+  final _mediaItemsController = StreamController<MediaItems$Query>.broadcast();
+  Stream<MediaItems$Query> get mediaItemsResult => _mediaItemsController.stream;
+
+  final _loginController = StreamController<bool>.broadcast();
+  Stream<bool> get loginResult => _loginController.stream;
+
+  final _authenticatedController = StreamController<bool>.broadcast();
+  Stream<bool> get authenticatedResult => _authenticatedController.stream;
+
+  HomeBloc(this._application){
+    _init();
+  }
+
+  void _init(){
+    _imaginiAPI = _application.imaginiAPI;
+    getMediaItems();
+  }
+
+  void dispose(){
+    _loginController.close();
+    _authenticatedController.close();
+    _mediaItemsController.close();
+  }
+
+  Image getImage(String fileName){
+    return _imaginiAPI.getImage(fileName);
+  }
+
+  getMediaItems(){
+    _mediaItemsController.addStream(_imaginiAPI.mediaItems());
+  }
+
+  checkAuthentication(){
+    _authenticatedController.addStream(_imaginiAPI.isAuthenticated());
+  }
+
+  attemptHome(String username, password, server){
+    _loginController.addStream(_imaginiAPI.login(username, password, server));
+  }
+}