Remove the progress bar and fix the downloader

The progress bar *might* be causing problems during the upload. So we
remove it and allow the progress to be mysterious to the user

Return a non-zero error code if there is a failure

Make the cache directory first...

nix/cache.nix

@@ -30,6 +30,7 @@ writeShellApplication {
   ];
   text =
     ''
+      set -o pipefail
       function list_isos {
     ''
     + (concatStringsSep "\n" (

nix/cache/cache.go

@@ -11,7 +11,6 @@ import (
 
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
-	"github.com/schollz/progressbar/v3"
 )
 
 func listBucketContents(minioClient *minio.Client, bucketName string) ([]string, error) {
@@ -62,36 +61,22 @@ func processStdin() []IsoInfo {
 	return isos
 }
 
-// CustomReader wraps an io.Reader with a progress bar
-type CustomReader struct {
-	Reader      io.Reader
-	ProgressBar *progressbar.ProgressBar
-}
-
-func (r *CustomReader) Read(p []byte) (int, error) {
-	n, err := r.Reader.Read(p)
-	if n > 0 {
-		r.ProgressBar.Add(n)
-	}
-	return n, err
-}
-
 func downloadAndUploadIso(minioClient *minio.Client, iso IsoInfo) error {
 	// Create the destination file path
 	destPath := "cache/" + iso.Hash + ".iso"
+	// Create cache directory if it doesn't exist
+	err := os.MkdirAll("cache", 0755)
+	if err != nil {
+		return err
+	}
 
+	log.Println("Downloading " + iso.Url)
 	// Download the ISO file
 	resp, err := http.Get(iso.Url)
 	if err != nil {
 		return err
 	}
 	defer resp.Body.Close()
-	//
-	// Create download progress bar
-	downloadBar := progressbar.DefaultBytes(
-		resp.ContentLength,
-		"Downloading: "+iso.Url,
-	)
 
 	// Create the destination file
 	destFile, err := os.Create(destPath)
@@ -100,11 +85,8 @@ func downloadAndUploadIso(minioClient *minio.Client, iso IsoInfo) error {
 	}
 	defer destFile.Close()
 
-	// Create a wrapped reader with progress bar
-	reader := io.TeeReader(resp.Body, downloadBar)
-
 	// Copy the downloaded content to the file
-	_, err = io.Copy(destFile, reader)
+	_, err = io.Copy(destFile, resp.Body)
 	if err != nil {
 		return err
 	}
@@ -122,20 +104,9 @@ func downloadAndUploadIso(minioClient *minio.Client, iso IsoInfo) error {
 		return err
 	}
 
-	// Create upload progress bar
+	log.Println("Uploading " + destPath)
-	uploadBar := progressbar.DefaultBytes(
-		fileInfo.Size(),
-		"Uploading: "+destPath,
-	)
-
-	// Create wrapped reader for upload progress
-	uploadReader := &CustomReader{
-		Reader:      uploadFile,
-		ProgressBar: uploadBar,
-	}
-
 	// Upload the file to MinIO
-	_, err = minioClient.PutObject(context.Background(), "isos", "cache/"+iso.Hash+".iso", uploadReader, fileInfo.Size(), minio.PutObjectOptions{
+	_, err = minioClient.PutObject(context.Background(), "isos", "cache/"+iso.Hash+".iso", uploadFile, fileInfo.Size(), minio.PutObjectOptions{
 		ContentType: "application/x-iso9660-image",
 	})
 	if err != nil {
@@ -184,7 +155,10 @@ func main() {
 		}
 
 		if !exists {
-			downloadAndUploadIso(minioClient, iso)
+			if err := downloadAndUploadIso(minioClient, iso); err != nil {
+				log.Println("Error downloading/uploading ISO:", err)
+				os.Exit(1)
+			}
 		}
 	}
 }