Manual mode

Signed-off-by: Thomas Klaehn <tkl@blackfinn.de>

src/internal/app/storage/storage.go

@@ -0,0 +1,50 @@
+package storage
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+)
+
+type Storage struct {
+	Path string
+}
+
+var (
+	logger log.Logger = *log.Default()
+)
+
+func init() {
+	logger.SetFlags(log.Llongfile | log.Ltime)
+}
+
+func (storage Storage) Read() ([]byte, error) {
+	data, err := os.ReadFile(storage.Path)
+	if err != nil {
+		logger.Printf("unable to read %s (%s)", storage.Path, err.Error())
+		return nil, err
+	}
+	return data, nil
+}
+
+func (storage Storage) Write(data []byte) error {
+	dir := filepath.Dir(storage.Path)
+	_, err := os.Stat(dir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = os.MkdirAll(dir, 0644)
+			if err != nil {
+				logger.Printf("unable to create %s (%s)", dir, err.Error())
+				return err
+			}
+		} else {
+			logger.Print(err)
+			return err
+		}
+	}
+	err = os.WriteFile(storage.Path, data, 0644)
+	if err != nil {
+		logger.Printf("unable to store %s (%s)", storage.Path, err.Error())
+	}
+	return nil
+}