feat: working helm template

dagger.go

@@ -2,7 +2,9 @@ package daggerhelm
 
 import (
 	"context"
+	"errors"
 	"fmt"
+	"log"
 	"os"
 	"path"
 	"text/template"
@@ -12,11 +14,17 @@ import (
 
 const CONTAINER_IMAGE = "docker.io/alpine/k8s:1.26.3"
 
-func Compile(ctx context.Context, client *dagger.Client, chartPath string, valuesFilePath string) (*dagger.Directory, error) {
+func Compile(
+	ctx context.Context,
+	client *dagger.Client,
+	chartPath string,
+	valuesFilePath string,
+) (*dagger.Directory, error) {
 
 	chart := client.Host().Directory(chartPath)
 
 	tmpdir := os.TempDir()
+	tmpdir = path.Join(tmpdir, "helm-dagger")
 	err := os.MkdirAll(tmpdir, 0755)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create tmpdir: %v", err)
@@ -34,7 +42,16 @@ func Compile(ctx context.Context, client *dagger.Client, chartPath string, value
 	//	}
 	//}()
 
-	tmpl, err := template.New("helm-dagger").ParseFiles(valuesFilePath)
+	if _, err := os.Stat(valuesFilePath); errors.Is(err, os.ErrNotExist) {
+		return nil, fmt.Errorf("the values file does not exist: %v", err)
+	}
+
+	contents, err := os.ReadFile(valuesFilePath)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read values file: %v", err)
+	}
+
+	tmpl, err := template.New(valuesFilePath).Delims("[[", "]]").Parse(string(contents))
 	if err != nil {
 		return nil, fmt.Errorf("failed to build template for values.yaml, err: %v", err)
 	}
@@ -53,22 +70,21 @@ func Compile(ctx context.Context, client *dagger.Client, chartPath string, value
 		return nil, fmt.Errorf("failed to read tmpdir. err: %v", err)
 	}
 
-	valuesFileDirPath := path.Dir(tmpdir)
+	valuesFileDirPath := tmpdir
 	valuesFileRelativePath := files[0].Name()
+	log.Println(valuesFileRelativePath)
 	valuesFile := client.Host().Directory(valuesFileDirPath).File(valuesFileRelativePath)
 
-	helmoutput := client.Container().From(CONTAINER_IMAGE).WithWorkdir("/mnt").WithDirectory("chart", chart).WithFile("values.yaml", valuesFile).WithExec([]string{"helm", "template", ".", "--output-dir", "/mnt/output"})
+	helmoutput := client.Container().
+		From(CONTAINER_IMAGE).
+		WithWorkdir("/mnt").
+		WithDirectory("chart", chart).
+		WithFile("chart/values.yaml", valuesFile).
+		WithWorkdir("/mnt/chart").
+		WithExec([]string{"helm", "template", ".", "--output-dir", "/mnt/output"})
 	if exitCode, err := helmoutput.ExitCode(ctx); err != nil || exitCode != 0 {
 		return nil, fmt.Errorf("failed to render helm chart: %v", err)
 	}
 
-	exported, err := helmoutput.Directory("/mnt/output").Export(ctx, "dist")
-	if err != nil {
-		return nil, fmt.Errorf("failed to export helm template: %v", err)
-	}
-	if !exported {
-		return nil, fmt.Errorf("nothing was exported")
-	}
-
-	return nil, nil
+	return helmoutput.Directory("/mnt/output"), nil
 }