From 84f3b8fdd5db925f39627acb14c38970cd3daa5d Mon Sep 17 00:00:00 2001
From: Alex Root Junior <jroot.junior@gmail.com>
Date: Mon, 24 Jul 2017 22:25:35 +0300
Subject: [PATCH] Oops add Versions util

---
 aiogram/__init__.py       | 10 ++---
 aiogram/utils/versions.py | 89 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 92 insertions(+), 7 deletions(-)
 create mode 100644 aiogram/utils/versions.py

diff --git a/aiogram/__init__.py b/aiogram/__init__.py
index e30ce6ef..c8241e36 100644
--- a/aiogram/__init__.py
+++ b/aiogram/__init__.py
@@ -1,11 +1,7 @@
+from aiogram.utils.versions import Version
 from .bot import Bot
 
 
-major_version = 0
-minor_version = 3
-major_build = 1
-build_type = ''
-build_number = ''
+VERSION = Version(0, 3, 2, build=2)
 
-
-__version__ = f"{major_version}.{minor_version}.{major_build}.{build_type}{build_number}"
+__version__ = VERSION.version
diff --git a/aiogram/utils/versions.py b/aiogram/utils/versions.py
new file mode 100644
index 00000000..bf9fb1c6
--- /dev/null
+++ b/aiogram/utils/versions.py
@@ -0,0 +1,89 @@
+from aiogram.utils.helper import Helper, HelperMode, Item
+
+
+class Version:
+    def __init__(self, major=0, minor=0, maintenance=0, stage='final', build=0):
+        self.__raw_version = None
+        self.__version = None
+
+        self.version = (major, minor, maintenance, stage, build)
+
+    @property
+    def version(self):
+        if self.__version is None:
+            self.__version = self.get_version()
+        return self.__version
+
+    @version.setter
+    def version(self, version):
+        assert isinstance(version, (tuple, list))
+        self.__raw_version = version
+        self.__version = None
+
+    @property
+    def major(self):
+        return self.__raw_version[0]
+
+    @property
+    def minor(self):
+        return self.__raw_version[1]
+
+    @property
+    def maintenance(self):
+        return self.__raw_version[2]
+
+    @property
+    def stage(self):
+        return self.__raw_version[3]
+
+    @property
+    def build(self):
+        return self.__raw_version[4]
+
+    def get_version(self):
+        """
+        Returns a PEP 440-compliant version number from VERSION.
+        :param:
+        :return:
+        """
+        version = self.__raw_version
+
+        # Now build the two parts of the version number:
+        # app = X.Y[.Z]
+        # sub = .devN - for pre-alpha releases
+        #     | {a|b|rc}N - for alpha, beta, and rc releases
+
+        main = self.get_main_version()
+
+        sub = ''
+
+        if version[3] != 'final':
+            mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'rc'}
+            sub = mapping[version[3]] + str(version[4])
+
+        return str(main + sub)
+
+    def get_main_version(self):
+        """
+        Returns app version (X.Y[.Z]) from VERSION.
+        :param:
+        :return:
+        """
+        version = self.__raw_version
+        parts = 2 if version[2] == 0 else 3
+        return '.'.join(str(x) for x in version[:parts])
+
+    def __str__(self):
+        return self.version
+
+    def __repr__(self):
+        return '<Version:' + str(self) + '>'
+
+
+class Stage(Helper):
+    mode = HelperMode.lowercase
+
+    FINAL = Item()
+    ALPHA = Item()
+    BETA = Item()
+    RC = Item()