Add themes folder, setup json for dark theme assets and test getting assets from folder

lib/assets/defaults/dark.dart

@@ -0,0 +1,51 @@
+final Map<String, dynamic> darkJson = {
+  "name": "dark",
+  "svg": {
+    "background": "",
+    "coin_icons": {
+      "small": {
+        "bitcoin ": "svg/coin_icons/small/Bitcoin.svg",
+        "litecoin ": "svg/coin_icons/small/Litecoin.svg",
+        "bitcoincash ": "svg/coin_icons/small/Bitcoincash.svg",
+        "dogecoin ": "svg/coin_icons/small/Dogecoin.svg",
+        "epicCash ": "svg/coin_icons/small/EpicCash.svg",
+        "ethereum ": "svg/coin_icons/small/Ethereum.svg",
+        "firo ": "svg/coin_icons/small/Firo.svg",
+        "monero ": "svg/coin_icons/small/Monero.svg",
+        "wownero ": "svg/coin_icons/small/Wownero.svg",
+        "namecoin ": "svg/coin_icons/small/Namecoin.svg",
+        "particl ": "svg/coin_icons/small/Particl.svg",
+      },
+      "big": {
+        "bitcoin ": "svg/coin_icons/big/bitcoin.svg",
+        "litecoin ": "svg/coin_icons/big/litecoin.svg",
+        "bitcoincash ": "svg/coin_icons/big/bitcoincash.svg",
+        "dogecoin ": "svg/coin_icons/big/doge.svg",
+        "epicCash ": "svg/coin_icons/big/epic-cash.svg",
+        "ethereum ": "svg/coin_icons/big/ethereum.svg",
+        "firo ": "svg/coin_icons/big/firo.svg",
+        "monero ": "svg/coin_icons/big/monero.svg",
+        "wownero ": "svg/coin_icons/big/wownero.svg",
+        "namecoin ": "svg/coin_icons/big/namecoin.svg",
+        "particl ": "svg/coin_icons/big/particl.svg",
+      }
+    },
+    "bell_new": "svg/bell-new.svg",
+    "persona_incognito": "svg/persona-incognito-1.svg",
+    "persona_easy": "svg/persona-easy-1.svg",
+    "stack": "svg/stack.svg",
+    "stack_icon": "svg/stack-icon1.svg",
+    "receive": "svg/tx-icon-receive.svg",
+    "receive_pending": "svg/tx-icon-receive-pending.svg",
+    "receive_cancelled": "svg/tx-icon-receive-failed.svg",
+    "send": "svg/tx-icon-send.svg",
+    "send_pending": "svg/tx-icon-send-pending.svg",
+    "send_cancelled": "svg/tx-icon-send-failed.svg",
+    "theme_dark": "svg/dark-theme.svg",
+    "theme_dark_chan": "svg/darkChansTheme.svg",
+  },
+  "png": {
+    "chan_persona_easy": "images/chan-persona-easy.png",
+    "chan_persona_incognito": "images/chan-persona-incognito.png"
+  }
+};

lib/main.dart

@@ -51,6 +51,7 @@ import 'package:stackwallet/services/node_service.dart';
 import 'package:stackwallet/services/notifications_api.dart';
 import 'package:stackwallet/services/notifications_service.dart';
 import 'package:stackwallet/services/trade_service.dart';
+import 'package:stackwallet/themes/theme_providers.dart';
 import 'package:stackwallet/utilities/constants.dart';
 import 'package:stackwallet/utilities/db_version_migration.dart';
 import 'package:stackwallet/utilities/enums/backup_frequency_type.dart';
@@ -66,6 +67,7 @@ import 'package:window_size/window_size.dart';
 final openedFromSWBFileStringStateProvider =
     StateProvider<String?>((ref) => null);
 
+String? themeDirectory;
 // main() is the entry point to the app. It initializes Hive (local database),
 // runs the MyApp widget and checks for new users, caching the value in the
 // miscellaneous box for later use
@@ -178,6 +180,9 @@ void main() async {
     }
   }
 
+  //Add Themes directory - TODO
+  // await StackFileSystem.applicationThemesDirectory();
+
   monero.onStartup();
   wownero.onStartup();
 
@@ -270,6 +275,10 @@ class _MaterialAppWithThemeState extends ConsumerState<MaterialAppWithTheme>
         await loadShared();
       }
 
+      themeDirectory = ref
+          .read(applicationThemesDirectoryPathProvider.notifier)
+          .state = (await StackFileSystem.applicationThemesDirectory()).path;
+
       _notificationsService = ref.read(notificationsProvider);
       _nodeService = ref.read(nodeServiceChangeNotifierProvider);
       _tradesService = ref.read(tradesServiceProvider);

lib/utilities/assets.dart

@@ -1,6 +1,11 @@
+import 'dart:io';
+
+import 'package:cw_core/pathForWallet.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
+import 'package:stackwallet/main.dart';
 import 'package:stackwallet/utilities/enums/coin_enum.dart';
+import 'package:stackwallet/utilities/stack_file_system.dart';
 import 'package:stackwallet/utilities/theme/color_theme.dart';
 import 'package:stackwallet/utilities/theme/stack_colors.dart';
 import 'package:stackwallet/utilities/util.dart';
@@ -106,7 +111,11 @@ class _SVG {
       case ThemeType.chan:
         return "assets/svg/themed/${ThemeType.light.name}";
       case ThemeType.darkChans:
-        return "assets/svg/themed/${ThemeType.dark.name}";
+        // print("THIS THEMES DIRECTORY IS $themeDirectory");
+        // final themesPath = themesDirectory();
+        // return "assets/svg/themed/${ThemeType.dark.name}";
+        //TODO - remove, this will be accesses from js
+        return "$themeDirectory/dark";
 
       default:
         return "assets/svg/themed/${Theme.of(context).extension<StackColors>()!.themeType.name}";

lib/utilities/stack_file_system.dart

@@ -62,4 +62,17 @@ abstract class StackFileSystem {
       return root;
     }
   }
+
+  static Future<Directory> applicationThemesDirectory() async {
+    final root = await applicationRootDirectory();
+    if (Util.isDesktop) {
+      final dir = Directory("${root.path}/themes");
+      if (!dir.existsSync()) {
+        await dir.create();
+      }
+      return dir;
+    } else {
+      return root;
+    }
+  }
 }