feat: push branch with changelog

versioning.go

@@ -0,0 +1,89 @@
+package rp
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/blang/semver/v4"
+	"github.com/leodido/go-conventionalcommits"
+)
+
+func NextVersion(currentTag *Tag, changesets []Changeset, nextVersionType NextVersionType) (string, error) {
+	// TODO: Validate for versioning after pre-releases
+	currentVersion := "v0.0.0"
+	if currentTag != nil {
+		currentVersion = currentTag.Name
+	}
+
+	// The lib can not handle v prefixes
+	currentVersion = strings.TrimPrefix(currentVersion, "v")
+
+	version, err := semver.Parse(currentVersion)
+	if err != nil {
+		return "", err
+	}
+
+	versionBump := maxVersionBump(changesets)
+	switch versionBump {
+	case conventionalcommits.UnknownVersion:
+		// No new version, TODO: Throw error?
+	case conventionalcommits.PatchVersion:
+		err = version.IncrementPatch()
+	case conventionalcommits.MinorVersion:
+		err = version.IncrementMinor()
+	case conventionalcommits.MajorVersion:
+		err = version.IncrementMajor()
+	}
+	if err != nil {
+		return "", err
+	}
+
+	switch nextVersionType {
+	case NextVersionTypeAlpha, NextVersionTypeBeta, NextVersionTypeRC:
+		id := uint64(0)
+
+		if version.Pre[0].String() == nextVersionType.String() {
+			if version.Pre[1].String() == "" || !version.Pre[1].IsNumeric() {
+				return "", fmt.Errorf("invalid format of previous tag")
+			}
+			id = version.Pre[1].VersionNum + 1
+		}
+
+		setPRVersion(&version, nextVersionType.String(), id)
+	case NextVersionTypeUndefined, NextVersionTypeNormal:
+		version.Pre = make([]semver.PRVersion, 0)
+	}
+
+	return "v" + version.String(), nil
+}
+
+func maxVersionBump(changesets []Changeset) conventionalcommits.VersionBump {
+	bump := conventionalcommits.UnknownVersion
+
+	for _, changeset := range changesets {
+		for _, entry := range changeset.ChangelogEntries {
+			entryBump := conventionalcommits.UnknownVersion
+			switch {
+			case entry.BreakingChange:
+				entryBump = conventionalcommits.MajorVersion
+			case entry.Type == "feat":
+				entryBump = conventionalcommits.MinorVersion
+			case entry.Type == "fix":
+				entryBump = conventionalcommits.PatchVersion
+			}
+
+			if entryBump > bump {
+				bump = entryBump
+			}
+		}
+	}
+
+	return bump
+}
+
+func setPRVersion(version *semver.Version, prType string, count uint64) {
+	version.Pre = []semver.PRVersion{
+		{VersionStr: prType},
+		{VersionNum: count, IsNum: true},
+	}
+}