refac: some WGDashboard code

src/modules/ConnectionString.py

@@ -1,25 +0,0 @@
-import configparser
-import os
-from sqlalchemy_utils import database_exists, create_database
-from flask import current_app
-
-def ConnectionString(database) -> str:    
-    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+psycopg://{parser.get("Database", "username")}:{parser.get("Database", "password")}@{parser.get("Database", "host")}/{database}'
-    elif parser.get("Database", "type") == "mysql":
-        cn = f'mysql+pymysql://{parser.get("Database", "username")}:{parser.get("Database", "password")}@{parser.get("Database", "host")}/{database}'
-    else:
-        cn = f'sqlite:///{os.path.join(sqlitePath, f"{database}.db")}'
-    try:
-        if not database_exists(cn):
-            create_database(cn)
-    except Exception as e:
-        current_app.logger.error("Database error. Terminating...", e)
-        exit(1)
-        
-    return cn