init

internal/filesystem/fs_storage.go

@@ -0,0 +1,71 @@
+package filesystem
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func Open(path string) (*Storage, error) {
+	info, err := os.Stat(path)
+	if err != nil {
+		return nil, err
+	}
+
+	if !info.IsDir() {
+		return nil, fmt.Errorf("provided path %s is not a directory", path)
+	}
+
+	abs, err := filepath.Abs(path)
+	if err != nil {
+		return nil, fmt.Errorf("could not tarnslate %s to absolute path", path)
+	}
+
+	return &Storage{prefix: abs}, nil
+}
+
+type Storage struct {
+	prefix string
+}
+
+func (s *Storage) Save(key string, data []byte) error {
+	path := s.toAbs(key)
+
+	if err := os.WriteFile(path, data, 0664); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *Storage) Load(key string) ([]byte, error) {
+	path := s.toAbs(key)
+
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return b, nil
+}
+
+func (s *Storage) Delete(key string) error {
+	path := s.toAbs(key)
+
+	err := os.Remove(path)
+	if err != nil && os.IsNotExist(err) {
+		return nil
+	} else if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *Storage) Close() error {
+	return nil
+}
+
+func (s *Storage) toAbs(path string) string {
+	return filepath.Join(s.prefix, path)
+}