upd history

src/history.py

@@ -4,6 +4,12 @@ from settings import Settings
 import os
 
 
+MESSAGE_OWNER = {
+    'ME': 0,
+    'FRIEND': 1
+}
+
+
 class History(object):
     def __init__(self, name):
         self._name = name
@@ -16,9 +22,9 @@ class History(object):
         db.close()
 
     def add_friend_to_db(self, tox_id):
-        try:
         os.chdir(Settings.get_default_path())
         db = sqlite3.connect(self._name + '.hstr')
+        try:
             cursor = db.cursor()
             cursor.execute('INSERT INTO friends VALUES (?);', (tox_id, ))
             cursor.execute('CREATE TABLE id' + tox_id + '('
@@ -36,9 +42,9 @@ class History(object):
             db.close()
 
     def delete_friend_from_db(self, tox_id):
-        try:
         os.chdir(Settings.get_default_path())
         db = sqlite3.connect(self._name + '.hstr')
+        try:
             cursor = db.cursor()
             cursor.execute('DELETE FROM friends WHERE tox_id=?;', (tox_id, ))
             cursor.execute('DROP TABLE id' + tox_id + ';')
@@ -50,9 +56,9 @@ class History(object):
             db.close()
 
     def save_messages_to_db(self, tox_id, messages_iter):
-        try:
         os.chdir(Settings.get_default_path())
         db = sqlite3.connect(self._name + '.hstr')
+        try:
             cursor = db.cursor()
             cursor.executemany('INSERT INTO id' + tox_id + '(message, owner, unix_time) '
                                'VALUES (?, ?, ?);', messages_iter)
@@ -64,10 +70,9 @@ class History(object):
             db.close()
 
     def messages_getter(self, tox_id):
-        return MessageGetter(self._name, tox_id)
+        return History.MessageGetter(self._name, tox_id)
 
-
-class MessageGetter(object):
+    class MessageGetter(object):
         def __init__(self, name, tox_id):
             os.chdir(Settings.get_default_path())
             self._db = sqlite3.connect(name + '.hstr')
@@ -92,3 +97,4 @@ if __name__ == '__main__':
     h = History('test')
     getter = h.messages_getter('42')
     print getter.get_all()
+    print getter.get(5)