cleaned backend

src/utils/database.py

@@ -0,0 +1,26 @@
+# Imports
+import sqlite3
+
+# Database class
+class Database:
+    def __init__(self, db_name='db.sqlite'):
+        self.connection = sqlite3.connect(db_name, check_same_thread=False)
+        self.cursor = self.connection.cursor()
+
+    def execute(self, query, params=None):
+        if params is None:
+            params = []
+        self.cursor.execute(query, params)
+        self.connection.commit()
+        return self.cursor
+    
+    def fetchall(self, query, params=None):
+        cursor = self.execute(query, params)
+        return cursor.fetchall()
+    
+    def fetchone(self, query, params=None):
+        cursor = self.execute(query, params)
+        return cursor.fetchone()
+    
+    def close(self):
+        self.connection.close()