feat(template): add Fileserver for download

pkg/svg/storage.go

@@ -3,6 +3,7 @@ package svg
 import (
 	"io"
 	"log"
+	"net/http"
 	"os"
 	"path/filepath"
 )
@@ -12,22 +13,23 @@ type SvgStorage interface {
 	Get(id string) (io.ReadCloser, error)
 	CreatePublic(data io.Reader, filetype string) (string, error)
 	GetPublic(path string) (io.ReadCloser, error)
+	GetPublicDir() http.Dir
 }
 
 var _ SvgStorage = FileSvgStorage{}
 var TempDir string = ""
 
 type FileSvgStorage struct {
-	basepath string
+	basepath, publicSubPath string
 }
 
-func NewFileStorage(path string) *FileSvgStorage {
+func NewFileStorage(path, publicSubPath string) *FileSvgStorage {
 	err := os.MkdirAll(path, 0755)
 	if err != nil {
 		panic(err)
 	}
 	log.Println("Initialized file storage handler")
-	return &FileSvgStorage{path}
+	return &FileSvgStorage{path, publicSubPath}
 }
 
 func (f FileSvgStorage) Create(id string, svg io.Reader) (string, error) {
@@ -56,7 +58,7 @@ func (f FileSvgStorage) Get(id string) (io.ReadCloser, error) {
 }
 
 func (f FileSvgStorage) CreatePublic(data io.Reader, filetype string) (string, error) {
-	path := filepath.Join(f.basepath, "public")
+	path := filepath.Join(f.basepath, f.publicSubPath)
 	if err := os.Mkdir(path, 0755); err != nil {
 		return "", err
 	}
@@ -71,13 +73,17 @@ func (f FileSvgStorage) CreatePublic(data io.Reader, filetype string) (string, e
 }
 
 func (f FileSvgStorage) GetPublic(path string) (io.ReadCloser, error) {
-	file, err := os.Open(filepath.Join(f.basepath, "public", path))
+	file, err := os.Open(filepath.Join(f.basepath, f.publicSubPath, path))
 	if err != nil {
 		return nil, err
 	}
 	return file, nil
 }
 
+func (f FileSvgStorage) GetPublicDir() http.Dir {
+	return http.Dir(filepath.Join(f.basepath, f.publicSubPath))
+}
+
 func CreateTemp(data io.Reader, filetype string) (string, error) {
 	file, err := os.CreateTemp(TempDir, "*."+filetype)
 	if err != nil {