WIP Create version repo in services with classmethod

The goal is to create a single version_repo object for each
file loaded. In that way we may avoid loading the file for loading
and writing.

services.py

@@ -3,6 +3,7 @@ class InitReleaseService():
     def __init__(self, commit_id, file):
         self.commit_id = commit_id
         self.file = file
+        self.version_repo = none
 
     def __read_commit_message(self):
         pass
@@ -12,12 +13,12 @@ class InitReleaseService():
 
     def get_version(self):
 
-        current_version = VersionRepository.get_current_version(self.file)
+        version_repo = VersionRepository.get_current_version(self.file)
         commit_message = self.read_commit_message(self.commit_id)
         release_type = self.calculate_release_type(commit_message)
 
-        release_version = create_release_version(current_version,release_type)
-        bump_version = create_bump_version(current_version,release_type)
+        release_version = create_release_version(version_repo.version ,release_type)
+        bump_version = create_bump_version(version_repo.version,release_type)
 
         release_and_bump_version = tuple(release_version, bump_version)
 

version.py

@@ -24,23 +24,7 @@ class Version():
 
     def __init__(self, version, is_snapshot):
         self.version = version
-        self.is_snapshot = is_snapshot
-        self.file_handler = None
-
-    @classmethod
-    def from_file(cls, config_file_path):
-        file_handler = FileHandler.from_file_path(config_file_path)
-        version, is_snapshot = file_handler.parse()
-        inst = cls(version, is_snapshot)
-        inst.file_handler = file_handler
-        
-        return inst
-
-    def to_file(self):
-        if self.file_handler is None:
-            raise Exception('Version was not created by from_file method.')
-        else:
-            self.file_handler.write(self.get())
+        self.is_snapshot = is_snapshot        
 
     def increment(self, level: ReleaseLevel):
         self.is_snapshot = False

version_repository.py

@@ -4,14 +4,35 @@ class VersionRepository():
 
     def __init__(self, file):
         self.file = file
+        self.file_handler = None
+        self.version = None
+        self.is_snapshot = None
+    
+    def load_file(self):
+        self.file_handler = FileHandler.from_file_path(self.file)
+        return file_handler
+
+    def write_file(self):
+        if self.file_handler is None:
+            raise Exception('Version was not created by load_file method.')
+        if self.version is None or self.is_snapshot is None:
+            raise Exception('Version or is_snapshot attribute not set.')
+        else:
+            self.file_handler.write(self.version)
+    
+    def parse_file(self, file_handler):
+        version, is_snapshot = file_handler.parse()
+        return version, is_snapshot
 
     @classmethod
-    def load_file(cls, file):
-        file_handler = FileHandler.from_file_path(file)
-        version, is_snapshot = file_handler.parse()
-        inst = cls(version, is_snapshot)
-        inst.file_handler = file_handler
-        
-        return inst
+    def get_current_version(cls, file):
+        inst = cls(file)
 
-    
+        file_handler= inst.load_file(file)
+        version, is_snapshot = inst.parse_file(file_handler)
+
+        inst.version = version
+        inst.is_snapshot = is_snapshot
+        inst.file_handler = file_handler
+
+        return inst