1 files changed, 60 insertions, 0 deletions
diff --git a/vk/utils/tracking/logger.py b/vk/utils/tracking/logger.py
new file mode 100644
index 0000000..075935f
--- /dev/null
+++ b/vk/utils/tracking/logger.py
@@ -0,0 +1,60 @@
+# Copyright 2016 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is licensed under the terms of the MIT License.
+# See LICENSE.txt for details.
+
+import logging
+import sys
+
+class Logger:
+    @staticmethod
+    def set_up(fd=sys.stdout):
+        logging.basicConfig(format='[%(asctime)s] %(message)s',
+                            stream=fd,
+                            level=logging.INFO,
+                            datefmt='%Y-%m-%d %H:%M:%S')
+
+    @staticmethod
+    def on_initial_status(user):
+        if user.is_online():
+            logging.info(Logger._format_user_is_online(user))
+        else:
+            logging.info(Logger._format_user_is_offline(user))
+            logging.info(Logger._format_user_last_seen(user))
+
+    @staticmethod
+    def on_status_update(user):
+        if user.is_online():
+            logging.info(Logger._format_user_went_online(user))
+        else:
+            logging.info(Logger._format_user_went_offline(user))
+
+    @staticmethod
+    def on_exception(e):
+        logging.exception(e)
+
+    @staticmethod
+    def _format_user(user):
+        if user.has_last_name():
+            return '{} {}'.format(user.get_first_name(), user.get_last_name())
+        else:
+            return '{}'.format(user.get_first_name())
+
+    @staticmethod
+    def _format_user_is_online(user):
+        return '{} is ONLINE'.format(Logger._format_user(user))
+
+    @staticmethod
+    def _format_user_is_offline(user):
+        return '{} is OFFLINE'.format(Logger._format_user(user))
+
+    @staticmethod
+    def _format_user_last_seen(user):
+        return '{} was last seen at {}'.format(Logger._format_user(user), user.get_last_seen())
+
+    @staticmethod
+    def _format_user_went_online(user):
+        return '{} went ONLINE'.format(Logger._format_user(user))
+
+    @staticmethod
+    def _format_user_went_offline(user):
+        return '{} went OFFLINE'.format(Logger._format_user(user))