diff --git a/src/client/__pycache__/agent.cpython-39.pyc b/src/client/__pycache__/agent.cpython-39.pyc
index d0237ba..569b845 100644
Binary files a/src/client/__pycache__/agent.cpython-39.pyc and b/src/client/__pycache__/agent.cpython-39.pyc differ
diff --git a/src/client/agent.py b/src/client/agent.py
index 92e55a6..8036900 100644
--- a/src/client/agent.py
+++ b/src/client/agent.py
@@ -65,3 +65,5 @@ class SyncAgent():
       print('name: %s is regular FILE' % (attr.filename))
 
 
+synca = _agent.SyncAgent()
+# sftpc = a.get_sftp_client()
diff --git a/src/masync.py b/src/masync.py
index a3e47d2..b5559fd 100755
--- a/src/masync.py
+++ b/src/masync.py
@@ -1,3 +1,10 @@
 
 if __name__ == '__main__':
   print('python masync script: #!/usr/bin/env python ')
+
+  ## suppose last tree is
+
+  last_local_tree_hash = {'taglioCapelli4.jpg': '5af62402ec7716e8d729b0683061f0c4', 'taglioCapelli5.jpg': '9c42961af589a279c4c828925291153b', 'pino.txt': 'd41d8cd98f00b204e9800998ecf8427e', 'taglioCapelli6.jpg': '4059905eab817c33ee48f912af80fdb7', 'spartiti_sepu': {'IMG_20220626_081839.jpg': '3c14e508124c928d59b393a571e2f751', 'IMG_20220626_081951.jpg': 'd484638ac09cbe40f8753de3f1b3c4a6'}, 'preferiti.txt': 'af45981ef2be534dbb37f96833d3fd04'}
+
+  from snapshot.generate import local as _genlocal
+  local_tree_hash = _genlocal.generate_tree_hash('/home/luca/sharednotes_dev/')
diff --git a/src/snapshot/__pycache__/dump.cpython-39.pyc b/src/snapshot/__pycache__/dump.cpython-39.pyc
index ba5ce7b..f3ba4fc 100644
Binary files a/src/snapshot/__pycache__/dump.cpython-39.pyc and b/src/snapshot/__pycache__/dump.cpython-39.pyc differ
diff --git a/src/snapshot/__pycache__/snap.cpython-39.pyc b/src/snapshot/__pycache__/snap.cpython-39.pyc
index 5281cf8..444dfc6 100644
Binary files a/src/snapshot/__pycache__/snap.cpython-39.pyc and b/src/snapshot/__pycache__/snap.cpython-39.pyc differ
diff --git a/src/snapshot/dump.py b/src/snapshot/dump.py
index a5f8798..b40c6ad 100644
--- a/src/snapshot/dump.py
+++ b/src/snapshot/dump.py
@@ -1,13 +1,13 @@
 import gzip
 import json
-from snapshot import gen as _gen
+from snapshot.generate import local as _genlocal
 
 DUMP_FILE_NAME = '.snapshot.json.gz'
 SNAPSHOT_PATH = '../'
 
 def dump_snapshot(snapshot, path=None, dump_file_name=None):
   path = path or SNAPSHOT_PATH
-  path = _gen.check_isdir(path)
+  path = _genlocal.check_isdir(path)
 
   dump = json.dumps(snapshot)
   dump = gzip.compress(dump.encode())
@@ -20,7 +20,7 @@ def dump_snapshot(snapshot, path=None, dump_file_name=None):
   
 def decode_snapshot(path=None, dump_file_name=None):
   path = path or SNAPSHOT_PATH
-  path = _gen.check_isdir(path)
+  path = _genlocal.check_isdir(path)
 
   dump_file_name = dump_file_name or DUMP_FILE_NAME
 
diff --git a/src/snapshot/generate/__pycache__/local.cpython-39.pyc b/src/snapshot/generate/__pycache__/local.cpython-39.pyc
new file mode 100644
index 0000000..3357391
Binary files /dev/null and b/src/snapshot/generate/__pycache__/local.cpython-39.pyc differ
diff --git a/src/snapshot/generate/__pycache__/remote.cpython-39.pyc b/src/snapshot/generate/__pycache__/remote.cpython-39.pyc
new file mode 100644
index 0000000..861dfa3
Binary files /dev/null and b/src/snapshot/generate/__pycache__/remote.cpython-39.pyc differ
diff --git a/src/snapshot/gen.py b/src/snapshot/generate/local.py
similarity index 100%
rename from src/snapshot/gen.py
rename to src/snapshot/generate/local.py
diff --git a/src/snapshot/generate/remote.py b/src/snapshot/generate/remote.py
new file mode 100644
index 0000000..a62c338
--- /dev/null
+++ b/src/snapshot/generate/remote.py
@@ -0,0 +1,84 @@
+import stat 
+import os
+import hashlib 
+import json
+import gzip
+
+from client import agent as _agent
+
+
+def generate_rfile_hash(file_path, hexdigest=True, client=None):
+  if not client:
+    a = _agent.synca
+    client = a.get_sftp_client()
+
+  with client.open(file_path, "rb") as f:
+    buf = f.read()
+
+  if hexdigest: return hashlib.md5(buf).hexdigest()
+  return hashlib.md5(buf).digest()
+
+# def check_isdir(path: str):
+#   if not os.path.isdir(path):
+#     raise Exception('Provide a valid folder to start the hashing')
+#
+#   if not path.endswith(os.path.sep):
+#     path = path + os.path.sep
+#   return path
+
+def generate_tree_hash_oversftp(root_path :str):
+  '''
+    @param             root_path        string, root_path in remote server
+    generate a map of hashes starting from `root_path` recursively
+  '''
+  # if not os.path.isdir(root_path):
+  #   raise Exception('Provide a valid folder to start the hashing')
+  #
+  # if not root_path.endswith(os.path.sep):
+  #   root_path = root_path + os.path.sep
+  # root_path = check_isdir(root_path)
+
+  rtreemap = {}
+
+  if not root_path.endswith(os.path.sep):
+    root_path = root_path + os.path.sep
+
+  a = _agent.synca
+  sftpc = a.get_sftp_client()
+
+  for item in sftpc.listdir_attr(root_path):
+    absolute_item_path = root_path + item.filename
+    print('absolute_item_path: %s, item %s, isdir: %s' % (absolute_item_path, item.filename, stat.S_ISDIR(item.st_mode)))
+    if stat.S_ISDIR(item.st_mode):
+      rtreemap[item.filename] = generate_tree_hash_oversftp(absolute_item_path)
+    else:
+      rtreemap[item.filename] = generate_rfile_hash(absolute_item_path, client=sftpc)
+
+  return rtreemap
+
+
+'''
+a
+ - b
+   - c
+     - k.txt
+   i.txt
+   g.txt
+j.txt
+k.txt
+
+tree['a'] = {
+    'b' : {
+
+      },
+    'j.txt' : '012349jasdfh9934',
+
+
+    }
+
+'''
+
+root_path = '/home/luca/rsyn_test_fap'
+
+
+
diff --git a/src/snapshot/snap.py b/src/snapshot/snap.py
index d3b67a7..961e081 100644
--- a/src/snapshot/snap.py
+++ b/src/snapshot/snap.py
@@ -1,8 +1,8 @@
-from snapshot import gen as _gen
 from snapshot import dump as _dump
+from snapshot.generate import local as _genlocal
 
 def dmpsnap(root_tree: str):
-  snapshot = _gen.generate_recursive_filemap_hash(root_tree)
+  snapshot = _genlocal.generate_recursive_filemap_hash(root_tree)
   _dump.dump_snapshot(snapshot)
 
 def dcsnap(path: str, filename=None):