From 14298a762562ccdf2da2e28ef3d214dc148eb86a Mon Sep 17 00:00:00 2001
From: tuunit <jan@larwig.com>
Date: Fri, 1 Dec 2023 17:38:39 +0100
Subject: [PATCH] reduce code duplication

---
 internal/compose/helm.go | 141 +++++++++------------------------------
 1 file changed, 32 insertions(+), 109 deletions(-)

diff --git a/internal/compose/helm.go b/internal/compose/helm.go
index 047d82a..0f8e289 100644
--- a/internal/compose/helm.go
+++ b/internal/compose/helm.go
@@ -36,25 +36,33 @@ var (
 	minVersion = semver.MustParse("v3.0.0")
 )
 
+type HelmCommand string
+
+const (
+	HelmInstall   HelmCommand = "upgrade"
+	HelmUninstall HelmCommand = "uninstall"
+	HelmTemplate  HelmCommand = "template"
+)
+
 func CompatibleHelmVersion() error {
 	cmd := exec.Command(helm, "version")
 	util.DebugPrint("Executing %s", strings.Join(cmd.Args, " "))
 
 	output, err := cmd.CombinedOutput()
 	if err != nil {
-		return fmt.Errorf("Failed to run `%s version`: %v", os.Getenv("HELM_BIN"), err)
+		return fmt.Errorf("failed to run `%s version`: %v", os.Getenv("HELM_BIN"), err)
 	}
 
 	versionOutput := string(output)
 
 	matches := versionRE.FindStringSubmatch(versionOutput)
 	if matches == nil {
-		return fmt.Errorf("Failed to find version in output %#v", versionOutput)
+		return fmt.Errorf("failed to find version in output %#v", versionOutput)
 	}
 
 	helmVersion, err := semver.NewVersion(matches[1])
 	if err != nil {
-		return fmt.Errorf("Failed to parse version %#v: %v", matches[1], err)
+		return fmt.Errorf("failed to parse version %#v: %v", matches[1], err)
 	}
 
 	if minVersion.GreaterThan(helmVersion) {
@@ -74,109 +82,12 @@ func addHelmRepository(name string, url string) error {
 }
 
 func installHelmRelease(name string, release *cfg.Release) {
-	var args []string
-
-	args = append(args, "upgrade")
-	args = append(args, "--install")
-
-	if release.ChartVersion != "" {
-		args = append(args, fmt.Sprintf("--version=%s", release.ChartVersion))
-	}
-
-	if release.Namespace != "" {
-		args = append(args, fmt.Sprintf("--namespace=%s", release.Namespace))
-	}
-
-	if release.ForceUpdate {
-		args = append(args, "--force")
-	}
-
-	if release.HistoryMax < 0 {
-		args = append(args, fmt.Sprintf("--history-max=%d", 0))
-	} else if release.HistoryMax > 0 {
-		args = append(args, fmt.Sprintf("--history-max=%d", release.HistoryMax))
-	}
-
-	if release.CreateNamespace {
-		args = append(args, "--create-namespace")
-	}
-
-	if release.CleanUpOnFail {
-		args = append(args, "--cleanup-on-fail")
-	}
-
-	if release.DependencyUpdate {
-		args = append(args, "--dependency-update")
-	}
-
-	if release.SkipTLSVerify {
-		args = append(args, "--insecure-skip-tls-verify")
-	}
-
-	if release.SkipCRDs {
-		args = append(args, "--skip-crds")
-	}
-
-	if release.PostRenderer != "" {
-		args = append(args, fmt.Sprintf("--post-renderer=%s", release.PostRenderer))
-	}
-
-	if len(release.PostRendererArgs) > 0 {
-		args = append(args, fmt.Sprintf("--post-renderer-args=[%s]", strings.Join(release.PostRendererArgs, ",")))
-	}
-
-	if release.CAFile != "" {
-		args = append(args, fmt.Sprintf("--ca-file=%s", release.CAFile))
-	}
-
-	if release.CertFile != "" {
-		args = append(args, fmt.Sprintf("--cert-file=%s", release.CertFile))
-	}
-
-	if release.KeyFile != "" {
-		args = append(args, fmt.Sprintf("--key-file=%s", release.KeyFile))
-	}
-
-	if release.Timeout != "" {
-		args = append(args, fmt.Sprintf("--timeout=%s", release.Timeout))
-	}
-
-	if release.Wait {
-		args = append(args, "--wait")
-	}
-
-	if release.KubeConfig != "" {
-		args = append(args, fmt.Sprintf("--kubeconfig=%s", release.KubeConfig))
-	}
-
-	if release.KubeContext != "" {
-		args = append(args, fmt.Sprintf("--kube-context=%s", release.KubeContext))
-	}
-
-	for _, file := range release.ValueFiles {
-		args = append(args, fmt.Sprintf("--values=%s", file))
-	}
-
-	var jsonValues []string
-	for key := range release.Values {
-		data := util.ConvertJson(release.Values[key])
-		values, err := json.Marshal(data)
-		if err != nil {
-			cp := util.NewColorPrinter(name)
-			cp.Printf("%s |\t\t%s", name, err)
-			return
-		}
-
-		jsonValues = append(jsonValues, fmt.Sprintf("%s=%s", key, values))
-	}
-
-	if len(jsonValues) > 0 {
-		args = append(args, fmt.Sprintf("--set-json=%s", strings.Join(jsonValues, ",")))
+	args, err := createHelmArguments(HelmInstall, name, release)
+	if err != nil {
+		cp := util.NewColorPrinter(name)
+		cp.Printf("%s |\t\t%s", name, err)
 	}
 
-	args = append(args, name)
-	args = append(args, release.Chart)
-
 	helmExec(name, args)
 }
 
@@ -235,9 +146,23 @@ func helmExec(name string, args []string) {
 }
 
 func templateHelmRelease(name string, release *cfg.Release) {
+	args, err := createHelmArguments(HelmTemplate, name, release)
+	if err != nil {
+		cp := util.NewColorPrinter(name)
+		cp.Printf("%s |\t\t%s", name, err)
+	}
+
+	helmExec(name, args)
+}
+
+func createHelmArguments(command HelmCommand, name string, release *cfg.Release) ([]string, error) {
 	var args []string
 
-	args = append(args, "template")
+	args = append(args, string(command))
+
+	if command == HelmInstall {
+		args = append(args, "--install")
+	}
 
 	if release.ChartVersion != "" {
 		args = append(args, fmt.Sprintf("--version=%s", release.ChartVersion))
@@ -322,9 +247,7 @@ func templateHelmRelease(name string, release *cfg.Release) {
 		data := util.ConvertJson(release.Values[key])
 		values, err := json.Marshal(data)
 		if err != nil {
-			cp := util.NewColorPrinter(name)
-			cp.Printf("%s |\t\t%s", name, err)
-			return
+			return nil, err
 		}
 
 		jsonValues = append(jsonValues, fmt.Sprintf("%s=%s", key, values))
@@ -337,5 +260,5 @@ func templateHelmRelease(name string, release *cfg.Release) {
 	args = append(args, name)
 	args = append(args, release.Chart)
 
-	helmExec(name, args)
+	return args, nil
 }