ref: Create a storage interface

This `Storage` interface will define all the interactions with the
storage system. For now I plan to support native file system through
go's standard library and Nextcloud through *webdav*. So this is the
first step in that direction.

1 files changed, 40 insertions, 0 deletions

diff --git a/storage/storage_fs.go b/storage/storage_fs.go
new file mode 100644
index 0000000..35ce58b
--- /dev/null
+++ b/storage/storage_fs.go
@@ -0,0 +1,40 @@
+package storage
+
+import (
+	"os"
+	"path/filepath"
+)
+
+type FileSystem struct {
+	root string
+}
+
+func WalkFolder(folder string, walkMode WalkMode) <-chan string {
+	c := make(chan string)
+
+	go func(folder string, c chan string) {
+		filepath.Walk(folder, func(path string, info os.FileInfo, err error) error {
+			file, _ := os.Open(path)
+			defer file.Close()
+			fileInfo, _ := file.Stat()
+
+			switch walkMode {
+			case Folder:
+				if fileInfo.IsDir() {
+					c <- path
+				}
+			case File:
+				if !fileInfo.IsDir() {
+					c <- path
+				}
+			case FileFolder:
+				c <- path
+			}
+			return nil
+		})
+		close(c)
+
+	}(folder, c)
+
+	return c
+}