From 3a0d4eb990106ead6ace58085303b6b52f80a64d Mon Sep 17 00:00:00 2001
From: vickydotbat <vickydotbat@tutamail.com>
Date: Fri, 10 Apr 2026 08:13:09 +0200
Subject: [PATCH] Fix Windows Wrappers and Extensions

---
 build-tool.ps1                   | 10 +++++
 internal/erf/erf.go              | 64 ++++++++++++++++++++++++++++++--
 internal/erf/erf_test.go         | 28 ++++++++++++++
 internal/topdata/topdata_test.go | 10 +++++
 4 files changed, 108 insertions(+), 4 deletions(-)
 create mode 100644 build-tool.ps1

diff --git a/build-tool.ps1 b/build-tool.ps1
new file mode 100644
index 0000000..d7b5aaf
--- /dev/null
+++ b/build-tool.ps1
@@ -0,0 +1,10 @@
+Set-StrictMode -Version Latest
+$ErrorActionPreference = "Stop"
+
+$repoRoot = Split-Path -Parent $MyInvocation.MyCommand.Path
+Set-Location $repoRoot
+
+$env:GOCACHE = Join-Path $repoRoot ".cache/go-build"
+$outputPath = Join-Path $repoRoot "tools/sow-toolkit.exe"
+
+go build -o $outputPath ./cmd/nwn-tool
diff --git a/internal/erf/erf.go b/internal/erf/erf.go
index 3950a03..671a5b4 100644
--- a/internal/erf/erf.go
+++ b/internal/erf/erf.go
@@ -114,13 +114,69 @@ var extensionTypes = map[string]uint16{
 	"png": 0x083E,
 }
 
-var typeExtensions map[uint16]string
+var typeExtensions = map[uint16]string{
+	0x0000: "res",
+	0x0001: "bmp",
+	0x0002: "mve",
+	0x0003: "tga",
+	0x0004: "wav",
+	0x0006: "plt",
+	0x0007: "ini",
+	0x000A: "txt",
+	0x07D2: "mdl",
+	0x07D9: "nss",
+	0x07DA: "ncs",
+	0x07DC: "are",
+	0x07DD: "set",
+	0x07DE: "ifo",
+	0x07DF: "bic",
+	0x07E1: "wok",
+	0x07E2: "2da",
+	0x07E3: "tlk",
+	0x07E6: "txi",
+	0x07E7: "git",
+	0x07E9: "uti",
+	0x07EA: "utt",
+	0x07EB: "utc",
+	0x07ED: "dlg",
+	0x07EE: "itp",
+	0x07F0: "uts",
+	0x07F1: "dds",
+	0x07F6: "fac",
+	0x07F7: "gff",
+	0x07F9: "ute",
+	0x07FB: "utd",
+	0x07FC: "utp",
+	0x07FD: "dfa",
+	0x07FE: "gic",
+	0x07FF: "gui",
+	0x0800: "utm",
+	0x0804: "dwk",
+	0x0805: "pwk",
+	0x0808: "jrl",
+	0x080A: "utw",
+	0x080C: "ssf",
+	0x080D: "hak",
+	0x080E: "nwm",
+	0x080F: "bik",
+	0x0810: "ndb",
+	0x0811: "ptm",
+	0x0812: "ptt",
+	0x0813: "ltr",
+	0x0815: "shd",
+	0x0818: "mtr",
+	0x081E: "lod",
+	0x083E: "png",
+}
 
 func init() {
-	typeExtensions = make(map[uint16]string, len(extensionTypes))
 	for ext, resourceType := range extensionTypes {
-		if _, exists := typeExtensions[resourceType]; !exists {
-			typeExtensions[resourceType] = ext
+		canonicalExt, ok := typeExtensions[resourceType]
+		if !ok {
+			panic(fmt.Sprintf("missing canonical extension for resource type 0x%04X", resourceType))
+		}
+		if canonicalExt == ext {
+			continue
 		}
 	}
 }
diff --git a/internal/erf/erf_test.go b/internal/erf/erf_test.go
index 2ddea88..ebdec57 100644
--- a/internal/erf/erf_test.go
+++ b/internal/erf/erf_test.go
@@ -28,3 +28,31 @@ func TestArchiveRoundTrip(t *testing.T) {
 		t.Fatalf("unexpected first resource: %#v", decoded.Resources[0])
 	}
 }
+
+func TestExtensionMappingsKeep2DAAndTLKDistinct(t *testing.T) {
+	resourceType, ok := ResourceTypeForExtension("2da")
+	if !ok {
+		t.Fatal("expected 2da resource type")
+	}
+	if resourceType != 0x07E2 {
+		t.Fatalf("expected 2da type 0x07E2, got 0x%04X", resourceType)
+	}
+	extension, ok := ExtensionForResourceType(resourceType)
+	if !ok {
+		t.Fatal("expected canonical extension for 2da type")
+	}
+	if extension != "2da" {
+		t.Fatalf("expected 2da extension, got %q", extension)
+	}
+
+	tlkType, ok := ResourceTypeForExtension("tlk")
+	if !ok {
+		t.Fatal("expected tlk resource type")
+	}
+	if tlkType != 0x07E3 {
+		t.Fatalf("expected tlk type 0x07E3, got 0x%04X", tlkType)
+	}
+	if tlkType == resourceType {
+		t.Fatal("expected 2da and tlk resource types to stay distinct")
+	}
+}
diff --git a/internal/topdata/topdata_test.go b/internal/topdata/topdata_test.go
index 1448af0..9b40804 100644
--- a/internal/topdata/topdata_test.go
+++ b/internal/topdata/topdata_test.go
@@ -8303,15 +8303,22 @@ func TestBuildAndPackageIncludesCompiled2DAAndTopAssets(t *testing.T) {
 	}
 	found2DA := false
 	foundAsset := false
+	foundTLK := false
 	for _, resource := range archive.Resources {
 		ext, _ := erf.ExtensionForResourceType(resource.Type)
 		key := strings.ToLower(resource.Name) + "." + ext
 		if key == "repadjust.2da" {
+			if resource.Type != 0x07E2 {
+				t.Fatalf("expected repadjust.2da to keep resource type 0x07E2, got 0x%04X", resource.Type)
+			}
 			found2DA = true
 		}
 		if key == "testicon.png" {
 			foundAsset = true
 		}
+		if ext == "tlk" {
+			foundTLK = true
+		}
 	}
 	if !found2DA {
 		t.Fatalf("expected repadjust.2da in top package")
@@ -8319,6 +8326,9 @@ func TestBuildAndPackageIncludesCompiled2DAAndTopAssets(t *testing.T) {
 	if !foundAsset {
 		t.Fatalf("expected testicon.png in top package")
 	}
+	if foundTLK {
+		t.Fatalf("expected top package hak to exclude tlk resources")
+	}
 	if _, err := os.Stat(result.OutputTLKPath); err != nil {
 		t.Fatalf("expected packaged tlk output: %v", err)
 	}