Added support for downloading the Game & Watch ROMs (mattpannella#235)

GlobalHelper:
- made the ArchiveFiles property populate on first use.
- added GameAndWatchArchiveFiles
Archive:
- changed files to be a List<> vs an array so items could be easily removed
- updated some variable names to camel casing
Config:
-added new config setting to set the archive name for game and watch
Program
- awaited the Global Helper Initialize as it wasn't done populating when testing updating the game and watch core
- removed commented out code
Core:
- moved ad hoc string concats to string interpolation
- removed unused method ReadPlatformFile
- made Download Asset more generic so it can support downloading the ROMs for Game & Watch
- added code to download the Game & Watch ROMs from ArchiveOrg
- made Check CRC more generic so it can support Game & Watch
- replaced "" with string.Empty
- collapsed Build Asset Url code into Download Asset to make it easier to be more generic

src/Program.cs

@@ -183,7 +183,7 @@ private static async Task Main(string[] args)
 
             #endregion
 
-            GlobalHelper.Initialize(path);
+            await GlobalHelper.Initialize(path);
 
             if (!CLI_MODE)
             {
@@ -259,8 +259,6 @@ private static async Task Main(string[] args)
             coreUpdater.DownloadAssets(GlobalHelper.SettingsManager.GetConfig().download_assets);
             coreUpdater.BackupSaves(GlobalHelper.SettingsManager.GetConfig().backup_saves, GlobalHelper.SettingsManager.GetConfig().backup_saves_location);
 
-            //await coreUpdater.Initialize();
-
             // If we have any missing cores, handle them.
             if (GlobalHelper.SettingsManager.GetMissingCores().Any())
             {

src/helpers/GlobalHelper.cs

@@ -6,7 +6,55 @@ namespace Pannella.Helpers;
 
 public static class GlobalHelper
 {
-    public static Archive ArchiveFiles { get; private set; }
+    private static Archive archiveFiles;
+
+    public static Archive ArchiveFiles
+    {
+        get
+        {
+            if (archiveFiles == null)
+            {
+                Console.WriteLine("Loading Assets Index...");
+
+                if (SettingsManager.GetConfig().use_custom_archive)
+                {
+                    var custom = SettingsManager.GetConfig().custom_archive;
+                    Uri baseUrl = new Uri(custom["url"]);
+                    Uri url = new Uri(baseUrl, custom["index"]);
+
+                    archiveFiles = ArchiveService.GetFilesCustom(url.ToString()).Result;
+                }
+                else
+                {
+                    archiveFiles = ArchiveService.GetFiles(SettingsManager.GetConfig().archive_name).Result;
+                }
+            }
+
+            return archiveFiles;
+        }
+    }
+
+    private static Archive gameAndWatchArchiveFiles;
+
+    public static Archive GameAndWatchArchiveFiles
+    {
+        get
+        {
+            if (gameAndWatchArchiveFiles == null)
+            {
+                Console.WriteLine("Loading Game and Watch Assets Index...");
+
+                gameAndWatchArchiveFiles = ArchiveService.GetFiles(SettingsManager.GetConfig().gnw_archive_name).Result;
+
+                // remove the metadata files since we're processing the entire json list
+                gameAndWatchArchiveFiles.files.RemoveAll(file =>
+                    Path.GetExtension(file.name) is ".sqlite" or ".torrent" or ".xml");
+            }
+
+            return gameAndWatchArchiveFiles;
+        }
+    }
+
     public static SettingsManager SettingsManager { get; private set ;}
     public static string UpdateDirectory { get; private set; }
     public static string[] Blacklist { get; private set; }
@@ -15,7 +63,7 @@ public static class GlobalHelper
 
     private static bool isInitialized;
 
-    public static async void Initialize(string path)
+    public static async Task Initialize(string path)
     {
         if (!isInitialized)
         {
@@ -26,23 +74,6 @@ public static async void Initialize(string path)
             SettingsManager.InitializeCoreSettings(Cores);
             RefreshInstalledCores();
             Blacklist = await AssetsService.GetBlacklist();
-
-            Console.WriteLine("Loading Assets Index...");
-
-            if (SettingsManager.GetConfig().use_custom_archive)
-            {
-                var custom = SettingsManager.GetConfig().custom_archive;
-                Uri baseUrl = new Uri(custom["url"]);
-                Uri url = new Uri(baseUrl, custom["index"]);
-
-                ArchiveFiles = await ArchiveService.GetFilesCustom(url.ToString());
-            }
-            else
-            {
-                ArchiveFiles = await ArchiveService.GetFiles(SettingsManager.GetConfig().archive_name);
-            }
-
-            RefreshInstalledCores();
         }
     }
 

src/models/Archive/Archive.cs

@@ -4,11 +4,11 @@ public class Archive
 {
     public int files_count { get; set; }
     public int item_last_updated { get; set; }
-    public File[] files { get; set; }
+    public List<File> files { get; set; }
 
-    public File GetFile(string filename)
+    public File GetFile(string fileName)
     {
-        File file = this.files.FirstOrDefault(file => file.name == filename);
+        File file = this.files.FirstOrDefault(file => file.name == fileName);
 
         return file;
     }