make the status logger a database writer

2 files changed, 57 insertions, 1 deletions

diff --git a/vk/utils/tracking/db/writer/__init__.py b/vk/utils/tracking/db/writer/__init__.py
index 330d5a8..8eb62e1 100644
--- a/vk/utils/tracking/db/writer/__init__.py
+++ b/vk/utils/tracking/db/writer/__init__.py
@@ -2,4 +2,4 @@
 # This file is licensed under the terms of the MIT License.
 # See LICENSE.txt for details.
 
-__all__ = 'csv',
+__all__ = 'csv', 'log'
diff --git a/vk/utils/tracking/db/writer/log.py b/vk/utils/tracking/db/writer/log.py
new file mode 100644
index 0000000..02697b7
--- /dev/null
+++ b/vk/utils/tracking/db/writer/log.py
@@ -0,0 +1,56 @@
+# 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
+
+class Logger:
+    @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))
+        logging.info(Logger._format_user_last_seen(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 {} using {}.'.format(
+            Logger._format_user(user),
+            user.get_last_seen_time_local(),
+            user.get_last_seen_platform().get_description_for_sentence())
+
+    @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))