Start to add support for Flutter Web

lib/generated_plugin_registrant.dart

@@ -4,7 +4,6 @@
 
 // ignore_for_file: lines_longer_than_80_chars
 
-// ignore: implementation_imports
 import 'package:file_picker/src/file_picker_web.dart';
 import 'package:flutter_web_plugins/flutter_web_plugins.dart';
 import 'package:shared_preferences_web/shared_preferences_web.dart';

lib/helpers/version_helper.dart

@@ -1,3 +1,4 @@
+import 'package:comunic/utils/flutter_utils.dart';
 import 'package:package_info/package_info.dart';
 import 'package:version/version.dart';
 
@@ -9,7 +10,7 @@ class VersionHelper {
   static PackageInfo _info;
 
   static Future<void> ensureLoaded() async {
-    _info = await PackageInfo.fromPlatform();
+    if (!isWeb) _info = await PackageInfo.fromPlatform();
   }
 
   /// Get current version information

lib/main.dart

@@ -3,6 +3,7 @@ import 'package:comunic/helpers/database/database_helper.dart';
 import 'package:comunic/helpers/preferences_helper.dart';
 import 'package:comunic/helpers/version_helper.dart';
 import 'package:comunic/ui/widgets/init_widget.dart';
+import 'package:comunic/utils/flutter_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:flutter/material.dart';
 
@@ -17,8 +18,10 @@ void subMain() async {
   await VersionHelper.ensureLoaded();
 
   // Connect to database
-  await DatabaseHelper.open();
-  await DatabaseHelper.cleanUpDatabase();
+  if(!isWeb) {
+    await DatabaseHelper.open();
+    await DatabaseHelper.cleanUpDatabase();
+  }
 
   // Get current system language
   await initTranslations();

lib/ui/widgets/init_widget.dart

@@ -9,6 +9,7 @@ import 'package:comunic/ui/routes/main_route/main_route.dart';
 import 'package:comunic/ui/routes/main_route/smartphone_route.dart';
 import 'package:comunic/ui/routes/main_route/tablet_route.dart';
 import 'package:comunic/ui/widgets/safe_state.dart';
+import 'package:comunic/utils/flutter_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
@@ -63,8 +64,9 @@ class _InitializeWidgetState extends SafeState<InitializeWidget> {
     try {
       await ServerConfigurationHelper.ensureLoaded();
 
-      if (ServerConfigurationHelper.config.minSupportedMobileVersion > VersionHelper.version)
-        await showDeprecationDialog(context);
+      if (!isWeb &&
+          ServerConfigurationHelper.config.minSupportedMobileVersion >
+              VersionHelper.version) await showDeprecationDialog(context);
 
       if (!AccountHelper.isUserIDLoaded) {
         _popToMainRoute();
@@ -128,10 +130,12 @@ class _InitializeWidgetState extends SafeState<InitializeWidget> {
               Spacer(
                 flex: 2,
               ),
-              Text(tr("Version %version% - Build %build%", args: {
-                "version": VersionHelper.info.version.toString(),
-                "build": VersionHelper.info.buildNumber.toString()
-              })),
+              !isWeb
+                  ? Text(tr("Version %version% - Build %build%", args: {
+                      "version": VersionHelper.info.version.toString(),
+                      "build": VersionHelper.info.buildNumber.toString()
+                    }))
+                  : Container(),
               Spacer(flex: 1),
             ],
           ),

lib/utils/flutter_utils.dart

@@ -0,0 +1,6 @@
+/// Flutter utilities
+///
+/// @author Pierre Hubert
+import 'package:flutter/foundation.dart' show kIsWeb;
+
+bool get isWeb => kIsWeb;