history

src/history.py

@@ -0,0 +1,94 @@
+# coding=utf-8
+import sqlite3
+from settings import Settings
+import os
+
+
+class History(object):
+    def __init__(self, name):
+        self._name = name
+        os.chdir(Settings.get_default_path())
+        db = sqlite3.connect(name + '.hstr')
+        cursor = db.cursor()
+        cursor.execute('CREATE TABLE IF NOT EXISTS friends('
+                       '    tox_id TEXT PRIMARY KEY'
+                       ')')
+        db.close()
+
+    def add_friend_to_db(self, tox_id):
+        try:
+            os.chdir(Settings.get_default_path())
+            db = sqlite3.connect(self._name + '.hstr')
+            cursor = db.cursor()
+            cursor.execute('INSERT INTO friends VALUES (?);', (tox_id, ))
+            cursor.execute('CREATE TABLE id' + tox_id + '('
+                           '    id INTEGER PRIMARY KEY,'
+                           '    message TEXT,'
+                           '    owner INTEGER,'
+                           '    unix_time INTEGER'
+                           '    message_type INTEGER'
+                           ')')
+            db.commit()
+        except Exception as e:
+            db.rollback()
+            raise e
+        finally:
+            db.close()
+
+    def delete_friend_from_db(self, tox_id):
+        try:
+            os.chdir(Settings.get_default_path())
+            db = sqlite3.connect(self._name + '.hstr')
+            cursor = db.cursor()
+            cursor.execute('DELETE FROM friends WHERE tox_id=?;', (tox_id, ))
+            cursor.execute('DROP TABLE id' + tox_id + ';')
+            db.commit()
+        except Exception as e:
+            db.rollback()
+            raise e
+        finally:
+            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')
+            cursor = db.cursor()
+            cursor.executemany('INSERT INTO id' + tox_id + '(message, owner, unix_time) '
+                               'VALUES (?, ?, ?);', messages_iter)
+            db.commit()
+        except Exception as e:
+            db.rollback()
+            raise e
+        finally:
+            db.close()
+
+    def messages_getter(self, tox_id):
+        return MessageGetter(self._name, tox_id)
+
+
+class MessageGetter(object):
+    def __init__(self, name, tox_id):
+        os.chdir(Settings.get_default_path())
+        self._db = sqlite3.connect(name + '.hstr')
+        self._cursor = self._db.cursor()
+        self._cursor.execute('SELECT message, owner, unix_time FROM id' + tox_id +
+                             ' ORDER BY unix_time DESC;')
+
+    def get_one(self):
+        return self._cursor.fetchone()
+
+    def get_all(self):
+        return self._cursor.fetchall()
+
+    def get(self, count):
+        return self._cursor.fetchmany(count)
+
+    def __del__(self):
+        self._db.close()
+
+
+if __name__ == '__main__':
+    h = History('test')
+    getter = h.messages_getter('42')
+    print getter.get_all()