feat: initial commit

pkg/wails3kit/updates/semver.go

@@ -0,0 +1,35 @@
+package updates
+
+import (
+	"fmt"
+	"strings"
+
+	"golang.org/x/mod/semver"
+)
+
+func NormalizeVersion(version string) (string, error) {
+	trimmed := strings.TrimSpace(version)
+	if trimmed == "" {
+		return "", ErrInvalidVersion
+	}
+	if !strings.HasPrefix(trimmed, "v") {
+		trimmed = "v" + trimmed
+	}
+	if !semver.IsValid(trimmed) {
+		return "", fmt.Errorf("%w: %s", ErrInvalidVersion, version)
+	}
+	return trimmed, nil
+}
+
+func CompareVersions(left string, right string) (int, error) {
+	normalizedLeft, err := NormalizeVersion(left)
+	if err != nil {
+		return 0, err
+	}
+	normalizedRight, err := NormalizeVersion(right)
+	if err != nil {
+		return 0, err
+	}
+
+	return semver.Compare(normalizedLeft, normalizedRight), nil
+}