custom palette taxonomy (#46)

Implements custom palette taxonomyReviewed-on: #46

Co-authored-by: vickydotbat <vickydotbat@tutamail.com>

internal/topdata/top_package.go

@@ -2,6 +2,7 @@ package topdata
 
 import (
 	"bytes"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -13,6 +14,7 @@ import (
 	"time"
 
 	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/erf"
+	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/gff"
 	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/project"
 )
 
@@ -215,10 +217,15 @@ func collectTopPackageResources(p *project.Project, compiled2DADir string) ([]er
 			if err != nil {
 				return err
 			}
-			if skipTopPackageAsset(rel) {
-				return nil
+			var resource erf.Resource
+			if strings.HasSuffix(strings.ToLower(rel), ".itp.json") {
+				resource, err = topPackageITPResourceFromJSON(path)
+			} else {
+				if skipTopPackageAsset(rel) {
+					return nil
+				}
+				resource, err = topPackageResourceFromPath(path)
 			}
-			resource, err := topPackageResourceFromPath(path)
 			if err != nil {
 				return err
 			}
@@ -251,6 +258,27 @@ func collectTopPackageResources(p *project.Project, compiled2DADir string) ([]er
 	return resources, assetFiles, nil
 }
 
+func topPackageITPResourceFromJSON(path string) (erf.Resource, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return erf.Resource{}, fmt.Errorf("read %s: %w", path, err)
+	}
+	var document gff.Document
+	if err := json.Unmarshal(raw, &document); err != nil {
+		return erf.Resource{}, fmt.Errorf("parse %s: %w", path, err)
+	}
+	if document.FileType != "ITP " {
+		return erf.Resource{}, fmt.Errorf("%s: file_type must be ITP", path)
+	}
+	var payload bytes.Buffer
+	if err := gff.Write(&payload, document); err != nil {
+		return erf.Resource{}, fmt.Errorf("compile %s: %w", path, err)
+	}
+	resourceType, _ := erf.HAKResourceTypeForExtension("itp")
+	name := strings.TrimSuffix(filepath.Base(path), ".itp.json")
+	return erf.Resource{Name: strings.ToLower(name), Type: resourceType, Data: payload.Bytes(), Size: int64(payload.Len())}, nil
+}
+
 func shouldSkipTopDataSourceDir(path string, skipDirs map[string]struct{}) bool {
 	_, ok := skipDirs[filepath.Clean(path)]
 	return ok