Moved connection string to an individual file

src/modules/ConnectionString.py

@@ -0,0 +1,22 @@
+import configparser
+import os
+
+from sqlalchemy_utils import database_exists, create_database
+
+from DashboardConfig import DashboardConfig
+
+def ConnectionString(database) -> str or None:    
+    parser = configparser.ConfigParser(strict=False)
+    parser.read_file(open('wg-dashboard.ini', "r+"))
+    sqlitePath = os.path.join("db")
+    if not os.path.isdir(sqlitePath):
+        os.mkdir(sqlitePath)
+    if parser.get("Database", "type") == "postgresql":
+        cn = f'postgresql+psycopg2://{parser.get("Database", "username")}:{parser.get("Database", "password")[1]}@{parser.get("Database", "host")[1]}/{database}'
+    elif parser.get("Database", "type")[1] == "mysql":
+        cn = f'mysql+mysqldb://{parser.get("Database", "username")[1]}:{parser.get("Database", "password")[1]}@{parser.get("Database", "host")[1]}/{database}'
+    else:
+        cn = f'sqlite:///{os.path.join(sqlitePath, f"{database}.db")}'
+    if not database_exists(cn):
+        create_database(cn)
+    return cn