added data_sql for saving data

created data_sql for user data

driver/database/data_sql.py

@@ -0,0 +1,37 @@
+import threading
+from driver.database import BASE, SESSION
+from sqlalchemy import Column, String, UnicodeText
+
+
+class Chats(BASE):
+    __tablename__ = "chats"
+    chat_id = Column(String(14), primary_key=True)
+    chat_name = Column(UnicodeText)
+
+    def __init__(self, chat_id, chat_name=None):
+        self.chat_id = chat_id
+        self.chat_name = chat_name
+
+
+Chats.__table__.create(checkfirst=True)
+
+
+CHATS_LOCK = threading.RLock()
+CHATS_DATA = set()
+
+
+def del_chat(chat_id):
+    with CHATS_LOCK:
+        chat = SESSION.query(Chats).get(str(chat_id))
+        if chat:
+            SESSION.delete(chat)
+        SESSION.commit()
+
+
+def chatlists():
+    global CHAT_ID
+    try:
+        CHAT_ID = {int(x.chat_id) for x in SESSION.query(Chats).all()}
+        return CHAT_ID
+    finally:
+        SESSION.close()