support first placeholder & overwriting version

ModpackUpdater.Apps.Client/Form1.cs

@@ -146,7 +146,8 @@ public partial class Form1
     {
         var updater = new ModpackInstaller(updateConfig, modpackInfo)
         {
-            OverwriteRefTag = Program.Options.RefTag
+            OverwriteRefTag = Program.Options.RefTag,
+            OverwriteVersion = Program.Options.Version,
         };
         updater.InstallProgessUpdated += Update_InstallProgessUpdated;
         updater.CheckingProgressUpdated += Updated_CheckingProgresssUpdated;

ModpackUpdater.Apps.Client/Options.cs

@@ -12,6 +12,7 @@ internal class Options
     public bool Silent { get; private set; }
     public bool NoUi { get; private set; }
     public string RefTag { get; private set; }
+    public string Version { get; private set; }
     public UpdateCheckOptionsAdv UpdateOptions { get; } = new();
 
     public Options(string[] args)
@@ -29,7 +30,8 @@ internal class Options
             { "m|maintenance", "Ignores the maintenance mode.", m => UpdateOptions.IgnoreMaintenance = true},
             { "i|nonpublic", "Include non public (currently hidden) updates.", i => UpdateOptions.IncludeNonPublic = true},
             { "k|key=", "An key for retriving extra files on updates.", k => UpdateOptions.ExtrasKey = k},
-            { "r|reftag=", "Force uses a specific version, if supported.", r => RefTag = r},
+            { "r|reftag=", "Force uses a specific reference tag, if supported.", r => RefTag = r},
+            { "v|version=", "Force uses a specific version, if supported.", v => Version = v},
         };
 
         additionals.AddRange(options.Parse(args));

ModpackUpdater.Apps.Client/Program.cs

@@ -106,6 +106,7 @@ public static class Program
         var installer = new ModpackInstaller(config, info)
         {
             OverwriteRefTag = Options.RefTag,
+            OverwriteVersion = Options.Version,
             Log = Log,
         };
         var result = installer.Check(updateOptions).Result;

ModpackUpdater.Apps.Manager/Features/SharedFunctions.cs

@@ -41,7 +41,7 @@ internal static class SharedFunctions
                 {
                     try
                     {
-                        var result = await factory.ResolveSourceUrl(action, null);
+                        var result = await factory.ResolveSourceUrl(action);
                         failed = string.IsNullOrWhiteSpace(result);
                     }
                     catch (Exception ex)
@@ -130,7 +130,7 @@ internal static class SharedFunctions
                 {
                     Task.Run(async () =>
                     {
-                        action.SourceUrl = await factory.ResolveSourceUrl(action, null);
+                        action.SourceUrl = await factory.ResolveSourceUrl(action);
                     }).Wait();
                 }
                 catch (Exception)

ModpackUpdater.Manager/Extensions.cs

@@ -41,11 +41,13 @@ public static class Extensions
         }
     }
 
-    public static string GetSourceUrl(this InstallAction @this, Version version)
+    public static string GetSourceUrl(this InstallAction @this, Version version, string? overwriteVersion = null)
     {
-        if (version is null)
+        if (!string.IsNullOrWhiteSpace(overwriteVersion))
-            return @this.SourceUrl;
+            return @this.SourceUrl.Replace("{version}", overwriteVersion);
-        return @this.SourceUrl.Replace("{version}", version.ToString(3));
+        if (version is not null)
+            return @this.SourceUrl.Replace("{version}", version.ToString(3));
+        return @this.SourceUrl;
     }
 
     public static string GetInstallUrl(this ModpackConfig @this, string? overwriteRefTag = null)

ModpackUpdater.Manager/ModpackFactory.cs

@@ -24,7 +24,7 @@ public class ModpackFactory
         modrinth.Dispose();
     }
 
-    public async Task<string> ResolveSourceUrl(InstallAction action, Version? targetVersion)
+    public async Task<string> ResolveSourceUrl(InstallAction action, Version? targetVersion = null, string? overwriteVersion = null)
     {
         if (action.SourceType == SourceType.GitHub)
         {
@@ -53,7 +53,7 @@ public class ModpackFactory
                 return file.Url;
         }
 
-        return action.GetSourceUrl(targetVersion);
+        return action.GetSourceUrl(targetVersion, overwriteVersion: overwriteVersion);
     }
 
     public async Task<KeyValuePair<string, string>[]> FindUpdates(InstallAction action, string? gameVersion, ModLoader modLoader)

ModpackUpdater.Manager/ModpackInstaller.cs

@@ -22,6 +22,7 @@ public class ModpackInstaller(ModpackConfig updateConfig, ModpackInfo modpackInf
 
     public ILogger Log { get; set; } = NullLogger.Instance;
     public string? OverwriteRefTag { get; set; }
+    public string? OverwriteVersion { get; set; }
 
     private readonly HttpClient http = new();
     private readonly ModpackFactory factory = new();
@@ -151,8 +152,8 @@ public class ModpackInstaller(ModpackConfig updateConfig, ModpackInfo modpackInf
         {
             var destFilePath = Path.Combine(modpackInfo.LocaLPath, iaction.DestPath);
             var sourceUrl = updateConfig.PreferDirectLinks && !string.IsNullOrWhiteSpace(iaction.SourceUrl)
-                   ? iaction.GetSourceUrl(checkResult.LatestVersion)
+                   ? iaction.GetSourceUrl(checkResult.LatestVersion, overwriteVersion: OverwriteVersion)
-                   : await factory.ResolveSourceUrl(iaction, checkResult.LatestVersion);
+                   : await factory.ResolveSourceUrl(iaction, targetVersion: checkResult.LatestVersion, overwriteVersion: OverwriteVersion);
 
             if (iaction is UpdateAction uaction)
             {
@@ -278,6 +279,11 @@ public class ModpackInstaller(ModpackConfig updateConfig, ModpackInfo modpackInf
         if (cachedZipInfo != null)
         {
             // Copy content
+            if (zipPath.StartsWith("{first}"))
+            {
+                var firstDirName = Path.GetFileName(Directory.GetDirectories(cachedZipInfo.ExtractedZipPath).First());
+                zipPath = zipPath.Replace("{first}", firstDirName);
+            }
             var zipSrc = Path.Combine(cachedZipInfo.ExtractedZipPath, zipPath);
             Extensions.CopyDirectory(zipSrc, destFilePath, true);
         }