add pre-release flag, closes #3

README.md

@@ -17,6 +17,8 @@ Usage of hcr:
         The Helm charts location (default "charts")
   -pages-branch string
         The GitHub pages branch (default "gh-pages")
+  -pre-release
+        Whether the (chart) release should be marked as pre-release
   -remote string
         The Git remote for the GitHub Pages branch (default "origin")
   -tag string

internal/flag/flag.go

@@ -5,11 +5,13 @@ import (
 	"flag"
 	"github.com/pete911/hcr/internal/hcr"
 	"os"
+	"strconv"
 )
 
 type flags struct {
 	pagesBranch string
 	chartsDir   string
+	preRelease  bool
 	tag         string
 	remote      string
 	token       string
@@ -21,6 +23,7 @@ func ParseFlags() (hcr.Config, error) {
 
 	flagSet.StringVar(&f.pagesBranch, "pages-branch", getStringEnv("HCR_PAGES_BRANCH", "gh-pages"), "The GitHub pages branch")
 	flagSet.StringVar(&f.chartsDir, "charts-dir", getStringEnv("HCR_CHARTS_DIR", "charts"), "The Helm charts location")
+	flagSet.BoolVar(&f.preRelease, "pre-release", getBoolEnv("HCR_PRE_RELEASE", false), "Whether the (chart) release should be marked as pre-release")
 	flagSet.StringVar(&f.tag, "tag", getStringEnv("HCR_TAG", ""), "Release tag, defaults to chart version")
 	flagSet.StringVar(&f.remote, "remote", getStringEnv("HCR_REMOTE", "origin"), "The Git remote for the GitHub Pages branch")
 	flagSet.StringVar(&f.token, "token", getStringEnv("HCR_TOKEN", ""), "GitHub Auth Token")
@@ -36,6 +39,7 @@ func ParseFlags() (hcr.Config, error) {
 	return hcr.Config{
 		PagesBranch: f.pagesBranch,
 		ChartsDir:   f.chartsDir,
+		PreRelease:  f.preRelease,
 		Tag:         f.tag,
 		Remote:      f.remote,
 		Token:       f.token,
@@ -62,3 +66,15 @@ func getStringEnv(envName string, defaultValue string) string {
 	}
 	return env
 }
+
+func getBoolEnv(envName string, defaultValue bool) bool {
+	env, ok := os.LookupEnv(envName)
+	if !ok {
+		return defaultValue
+	}
+
+	if v, err := strconv.ParseBool(env); err == nil {
+		return v
+	}
+	return defaultValue
+}

internal/hcr/config.go

@@ -5,6 +5,7 @@ import "fmt"
 type Config struct {
 	PagesBranch string
 	ChartsDir   string
+	PreRelease  bool
 	Tag         string
 	Remote      string
 	Token       string
@@ -15,5 +16,6 @@ func (c Config) String() string {
 	if len(c.Token) == 0 {
 		token = "<empty>"
 	}
-	return fmt.Sprintf("pages-branch: %q, charts-dir: %q, tag: %q, remote: %q, token: %q", c.PagesBranch, c.ChartsDir, c.Tag, c.Remote, token)
+	return fmt.Sprintf("pages-branch: %q, charts-dir: %q, pre-release: %t, tag: %q, remote: %q, token: %q",
+		c.PagesBranch, c.ChartsDir, c.PreRelease, c.Tag, c.Remote, token)
 }

internal/hcr/releaser.go

@@ -103,7 +103,7 @@ func (r Releaser) releaseAndUpdateIndex(ctx context.Context, ghPagesDir string,
 			Name:        fmt.Sprintf("%s-%s", ch.Name(), ch.Metadata.Version),
 			Description: fmt.Sprintf("Kubernetes %s Helm chart", ch.Name()),
 			AssetPath:   chPath,
-			PreRelease:  false,
+			PreRelease:  r.config.PreRelease,
 		}
 		assetUrl, err := r.ghClient.CreateRelease(ctx, owner, repo, tag, release)
 		if err != nil {