refactor WiiCompiled.Setup into WiiCompiled.Setup.Windows and add WiiCompiled.Setup.Common

the idea behind this is C# code that is OS agnostic can go in WiiCompiled.Setup.Common to be shared by any OS specific code (eg: WiiCompiled.Setup.Windows and WiiCompiled.Setup.Linux).
2026-09-11 01:23:15 -04:00 · 2026-08-26 20:10:20 -04:00
parent f09590aa5d
commit c0ed2bfbeb
48 changed files with 444 additions and 340 deletions
@@ -0,0 +1,60 @@
+namespace WiiCompiled.Setup.Common;
+
+/// <summary>
+/// Resolves the one canonical Retro Rewind install. Wheel Wizard owns and passes it as
+/// <c>--retro-dir</c>; each installer only resolves, reads, and records it, never packages or
+/// copies it.
+/// </summary>
+public static class RetroRewindSource
+{
+    /// <summary>
+    /// Resolves the <c>RetroRewind6</c> folder from a selection that may be the folder itself or a
+    /// parent containing exactly one <c>RetroRewind6/Binaries/Code.pul</c>.
+    /// </summary>
+    public static string ResolveRetroRewind6(string selected)
+    {
+        if (string.IsNullOrWhiteSpace(selected))
+            throw new InvalidDataException("Choose the canonical Retro Rewind folder.");
+        var root = Path.GetFullPath(selected);
+        if (!Directory.Exists(root))
+            throw new DirectoryNotFoundException($"The Retro Rewind folder does not exist: {root}");
+
+        var candidates = new List<string> { root, Path.Combine(root, "RetroRewind6") };
+        // A folder produced by unpacking the published distribution keeps an extra wrapper directory.
+        foreach (var child in Directory.EnumerateDirectories(root))
+            candidates.Add(Path.Combine(child, "RetroRewind6"));
+
+        var matches = candidates
+            .Where(candidate => File.Exists(Path.Combine(candidate, "Binaries", "Code.pul")))
+            .Select(Path.GetFullPath)
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .ToList();
+
+        return matches.Count switch
+        {
+            1 => ResolveFinalDirectory(matches[0]),
+            0 => throw new InvalidDataException(
+                $"{root} does not contain RetroRewind6\\Binaries\\Code.pul. " +
+                "Select the canonical Retro Rewind folder, or the folder that contains it."),
+            _ => throw new InvalidDataException(
+                $"{root} contains more than one RetroRewind6\\Binaries\\Code.pul. " +
+                "Select the exact Retro Rewind folder to use.")
+        };
+    }
+
+    /// <summary>
+    /// Must resolve a junction/symlink RetroRewind6 to its real directory before fingerprinting: the
+    /// compile-input identity records on-disk kind, and a snapshot copy is always a real directory, so an
+    /// unresolved link can never match its own copy and installs fail forever with a misleading error.
+    /// </summary>
+    private static string ResolveFinalDirectory(string path)
+    {
+        var directory = new DirectoryInfo(path);
+        if (directory.LinkTarget is null)
+            return path;
+        var target = directory.ResolveLinkTarget(returnFinalTarget: true)?.FullName;
+        if (target is null || !Directory.Exists(target))
+            throw new InvalidDataException($"The Retro Rewind folder is a link to a missing target: {path}");
+        return target;
+    }
+}