Packaging Fix

internal/topdata/top_package.go

@@ -165,6 +165,7 @@ func packageBuiltTopData(p *project.Project, nativeResult BuildResult, progress
 
 func collectTopPackageResources(p *project.Project, compiled2DADir string) ([]erf.Resource, int, error) {
 	resourceByKey := map[string]erf.Resource{}
+	resourceSourceByKey := map[string]string{}
 
 	entries, err := os.ReadDir(compiled2DADir)
 	if err != nil {
@@ -179,7 +180,9 @@ func collectTopPackageResources(p *project.Project, compiled2DADir string) ([]er
 		if err != nil {
 			return nil, 0, err
 		}
-		resourceByKey[topPackageResourceKey(resource)] = resource
+		key := topPackageResourceKey(resource)
+		resourceByKey[key] = resource
+		resourceSourceByKey[key] = path
 	}
 
 	assetFiles := 0
@@ -210,10 +213,11 @@ func collectTopPackageResources(p *project.Project, compiled2DADir string) ([]er
 				return err
 			}
 			key := topPackageResourceKey(resource)
-			if _, ok := resourceByKey[key]; ok {
-				return fmt.Errorf("topdata asset %s collides with generated top package resource %s", path, key)
+			if existing, ok := resourceSourceByKey[key]; ok {
+				return fmt.Errorf("topdata asset %s collides with %s for top package resource %s", path, existing, key)
 			}
 			resourceByKey[key] = resource
+			resourceSourceByKey[key] = path
 			assetFiles++
 			return nil
 		})

internal/topdata/topdata_test.go

@@ -1,6 +1,7 @@
 package topdata
 
 import (
+	"bytes"
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
@@ -9670,7 +9671,8 @@ func TestBuildAndPackageIncludesCompiled2DAAndTopAssets(t *testing.T) {
   "columns": ["Label"],
   "rows": [{"id": 0, "Label": "TEST_LABEL"}]
 }`+"\n")
-	writeFile(t, filepath.Join(root, "topdata", "assets", "gui", "testicon.png"), "icon-data")
+	pngPayload := bytes.Repeat([]byte("png-payload-"), 4096)
+	writeBytes(t, filepath.Join(root, "topdata", "assets", "gui", "testicon.png"), pngPayload)
 
 	proj := testProject(root)
 	proj.Config.TopData.ReferenceBuilder = ""
@@ -9708,6 +9710,9 @@ func TestBuildAndPackageIncludesCompiled2DAAndTopAssets(t *testing.T) {
 			found2DA = true
 		}
 		if key == "testicon.png" {
+			if !bytes.Equal(resource.Data, pngPayload) {
+				t.Fatalf("expected testicon.png payload to be preserved, got %d bytes", len(resource.Data))
+			}
 			foundAsset = true
 		}
 		if ext == "tlk" {
@@ -9728,6 +9733,22 @@ func TestBuildAndPackageIncludesCompiled2DAAndTopAssets(t *testing.T) {
 	}
 }
 
+func TestCollectTopPackageResourcesRejectsDuplicateTopAssetKeys(t *testing.T) {
+	root := testProjectRoot(t)
+	mkdirAll(t, filepath.Join(root, ".cache", "2da"))
+	mkdirAll(t, filepath.Join(root, "topdata", "assets", "gui", "icons"))
+	mkdirAll(t, filepath.Join(root, "topdata", "assets", "gui", "portraits"))
+	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
+	writeFile(t, filepath.Join(root, ".cache", "2da", "repadjust.2da"), "2DA V2.0\n\n      Label\n0     TEST_LABEL\n")
+	writeFile(t, filepath.Join(root, "topdata", "assets", "gui", "icons", "duplicate.png"), "icon-a")
+	writeFile(t, filepath.Join(root, "topdata", "assets", "gui", "portraits", "duplicate.png"), "icon-b")
+
+	proj := testProject(root)
+	if _, _, err := collectTopPackageResources(proj, filepath.Join(root, ".cache", "2da")); err == nil || !strings.Contains(err.Error(), "collides with") {
+		t.Fatalf("expected duplicate topdata asset collision, got %v", err)
+	}
+}
+
 func TestBuildAndPackageHonorsConfiguredTopPackageOutputNames(t *testing.T) {
 	root := testProjectRoot(t)
 	mkdirAll(t, filepath.Join(root, "topdata", "data", "repadjust"))
@@ -10214,3 +10235,10 @@ func writeFile(t *testing.T, path, content string) {
 		t.Fatalf("write %s: %v", path, err)
 	}
 }
+
+func writeBytes(t *testing.T, path string, content []byte) {
+	t.Helper()
+	if err := os.WriteFile(path, content, 0o755); err != nil {
+		t.Fatalf("write %s: %v", path, err)
+	}
+}