add delete func, add check for invalid local paths

storage.go

@@ -7,6 +7,7 @@ import (
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
 	"io"
+	"io/fs"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -68,8 +69,14 @@ func New(config *Config) (*Storage, error) {
 
 		newStorage.s3Client = s3Client
 	case "local":
-		if err := os.MkdirAll(config.Path, 0740); err != nil {
+		if statInfo, err := os.Stat(config.Path); err != nil && errors.Is(err, fs.ErrNotExist) {
+			if err := os.MkdirAll(config.Path, 0740); err != nil {
+				return nil, err
+			}
+		} else if err != nil {
 			return nil, err
+		} else if statInfo.IsDir() {
+			return nil, ErrInvalidPath
 		}
 	default:
 		return nil, ErrInvalidStorageType
@@ -164,3 +171,14 @@ func (s *Storage) Write(name string, data []byte, opts WriteOptions) error {
 		return os.WriteFile(filepath.Join(s.config.Path, name), data, 0640)
 	}
 }
+
+func (s *Storage) Delete(name string) error {
+	if s.s3Client != nil {
+		if err := s.s3Client.RemoveObject(s.ctx, s.config.S3BucketName, name, minio.RemoveObjectOptions{}); err != nil {
+			return err
+		}
+		return nil
+	} else {
+		return os.Remove(filepath.Join(s.config.Path, name))
+	}
+}

storage_test.go

@@ -1,7 +1,6 @@
 package fsys
 
 import (
-	"fmt"
 	"github.com/stretchr/testify/assert"
 	"io"
 	"testing"
@@ -36,6 +35,10 @@ func TestStorageLocal(t *testing.T) {
 	err = file.Close()
 	assert.NoError(t, err)
 
+	t.Log("== Delete ==")
+	err = stor.Delete("test.txt")
+	assert.NoError(t, err)
+
 }
 
 func TestStorageS3(t *testing.T) {
@@ -56,7 +59,6 @@ func TestStorageS3(t *testing.T) {
 	t.Log("== Read ==")
 	fileContent, err := stor.Read("test.txt")
 	assert.NoError(t, err)
-	fmt.Println(fileContent)
 	assert.Equal(t, []byte("hi"), fileContent)
 
 	t.Log("== Open ==")
@@ -71,4 +73,8 @@ func TestStorageS3(t *testing.T) {
 	err = file.Close()
 	assert.NoError(t, err)
 
+	t.Log("== Delete ==")
+	err = stor.Delete("test.txt")
+	assert.NoError(t, err)
+
 }