Release

internal/semver/semver.go

@@ -9,6 +9,25 @@ import (
 	"git.thokra.dev/thokra/stamp/internal/changeset"
 )
 
+// PreReleaseBump converts a regular bump type to its pre-release equivalent,
+// taking into account whether the current version is already a pre-release.
+// If it is, the bump is always BumpPreRelease (just increment the pre number).
+// Otherwise the highest regular bump is promoted to its pre-release variant.
+func PreReleaseBump(currentVersion string, highest changeset.BumpType) changeset.BumpType {
+	v, err := goSemver.NewVersion(currentVersion)
+	if err == nil && v.Prerelease() != "" {
+		return changeset.BumpPreRelease
+	}
+	switch highest {
+	case changeset.BumpMajor:
+		return changeset.BumpPreMajor
+	case changeset.BumpMinor:
+		return changeset.BumpPreMinor
+	default:
+		return changeset.BumpPrePatch
+	}
+}
+
 // CurrentVersion parses a version string and returns the semver object.
 // It is exported so callers can inspect pre-release state without re-importing the semver library.
 func CurrentVersion(version string) (*goSemver.Version, error) {