initial commit

packbuilder/manifest.go

@@ -0,0 +1,52 @@
+package packbuilder
+
+import (
+	"encoding/json"
+	"github.com/google/uuid"
+	"github.com/sandertv/gophertunnel/minecraft/resource"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+// buildManifest creates a JSON manifest file for the client to be able to read the resource pack. It creates
+// basic information and writes it to the pack.
+func buildManifest(dir, version string, headerUUID, moduleUUID uuid.UUID) {
+	m, err := json.Marshal(resource.Manifest{
+		FormatVersion: 2,
+		Header: resource.Header{
+			Name:               "dragonfly auto-generated resource pack",
+			Description:        "This resource pack contains auto-generated content from dragonfly",
+			UUID:               headerUUID,
+			Version:            [3]int{0, 0, 1},
+			MinimumGameVersion: parseVersion(version),
+		},
+		Modules: []resource.Module{
+			{
+				UUID:        moduleUUID.String(),
+				Description: "This resource pack contains auto-generated content from dragonfly",
+				Type:        "resources",
+				Version:     [3]int{0, 0, 1},
+			},
+		},
+	})
+	if err != nil {
+		panic(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "manifest.json"), m, 0666); err != nil {
+		panic(err)
+	}
+}
+
+// parseVersion parses the version passed in the format of a.b.c as a [3]int.
+func parseVersion(ver string) [3]int {
+	frag := strings.Split(ver, ".")
+	if len(frag) != 3 {
+		panic("invalid version number " + ver)
+	}
+	a, _ := strconv.ParseInt(frag[0], 10, 64)
+	b, _ := strconv.ParseInt(frag[1], 10, 64)
+	c, _ := strconv.ParseInt(frag[2], 10, 64)
+	return [3]int{int(a), int(b), int(c)}
+}