Refactor filestore to simplify testing

[rbdr/mobius] / hotline / file_path.go

diff --git a/hotline/file_path.go b/hotline/file_path.go
index 71168dcbcbcea5593a555ee12ffa3593b414b4b3..3ff243557f9b96a69a2d5be6a952fc48f1f03614 100644 (file)
--- a/hotline/file_path.go
+++ b/hotline/file_path.go
@@ -1,7 +1,11 @@
 package hotline
 
 import (
+       "bytes"
        "encoding/binary"
+       "errors"
+       "io"
+       "path"
        "strings"
 )
 
@@ -16,41 +20,96 @@ type FilePathItem struct {
        Name []byte
 }
 
-func NewFilePathItem(b []byte) FilePathItem {
-       return FilePathItem{
-               Len:  b[2],
-               Name: b[3:],
-       }
+type FilePath struct {
+       ItemCount [2]byte
+       Items     []FilePathItem
 }
 
-type FilePath struct {
-       PathItemCount []byte
-       PathItems     []FilePathItem
+func (fp *FilePath) UnmarshalBinary(b []byte) error {
+       reader := bytes.NewReader(b)
+       err := binary.Read(reader, binary.BigEndian, &fp.ItemCount)
+       if err != nil && !errors.Is(err, io.EOF) {
+               return err
+       }
+       if errors.Is(err, io.EOF) {
+               return nil
+       }
+
+       for i := uint16(0); i < fp.Len(); i++ {
+               // skip two bytes for the file path delimiter
+               _, _ = reader.Seek(2, io.SeekCurrent)
+
+               // read the length of the next pathItem
+               segLen, err := reader.ReadByte()
+               if err != nil {
+                       return err
+               }
+
+               pBytes := make([]byte, segLen)
+
+               _, err = reader.Read(pBytes)
+               if err != nil && !errors.Is(err, io.EOF) {
+                       return err
+               }
+
+               fp.Items = append(fp.Items, FilePathItem{Len: segLen, Name: pBytes})
+       }
+
+       return nil
 }
 
-func NewFilePath(b []byte) FilePath {
-       if b == nil {
-               return FilePath{}
+func (fp *FilePath) IsDropbox() bool {
+       if fp.Len() == 0 {
+               return false
        }
 
-       fp := FilePath{PathItemCount: b[0:2]}
+       return strings.Contains(strings.ToLower(string(fp.Items[fp.Len()-1].Name)), "drop box")
+}
 
-       // number of items in the path
-       pathItemLen := binary.BigEndian.Uint16(b[0:2])
-       pathData := b[2:]
-       for i := uint16(0); i < pathItemLen; i++ {
-               segLen := pathData[2]
-               fp.PathItems = append(fp.PathItems, NewFilePathItem(pathData[:segLen+3]))
-               pathData = pathData[3+segLen:]
+func (fp *FilePath) IsUploadDir() bool {
+       if fp.Len() == 0 {
+               return false
        }
 
-       return fp
+       return strings.Contains(strings.ToLower(string(fp.Items[fp.Len()-1].Name)), "upload")
+}
+
+func (fp *FilePath) Len() uint16 {
+       return binary.BigEndian.Uint16(fp.ItemCount[:])
 }
 
 func (fp *FilePath) String() string {
-       var out []string
-       for _, i := range fp.PathItems {
+       out := []string{"/"}
+       for _, i := range fp.Items {
                out = append(out, string(i.Name))
        }
-       return strings.Join(out, pathSeparator)
+
+       return path.Join(out...)
+}
+
+func ReadFilePath(filePathFieldData []byte) string {
+       var fp FilePath
+       err := fp.UnmarshalBinary(filePathFieldData)
+       if err != nil {
+               // TODO
+       }
+       return fp.String()
+}
+
+func readPath(fileRoot string, filePath, fileName []byte) (fullPath string, err error) {
+       var fp FilePath
+       if filePath != nil {
+               if err = fp.UnmarshalBinary(filePath); err != nil {
+                       return "", err
+               }
+       }
+
+       fullPath = path.Join(
+               "/",
+               fileRoot,
+               fp.String(),
+               path.Join("/", string(fileName)),
+       )
+
+       return fullPath, nil
 }