Refactor application configuration; implement dynamic database URI setup based on environment variables for improved flexibility and maintainability

__init__.py

@@ -1,37 +1,28 @@
 from flask import Flask
 from flask_sqlalchemy import SQLAlchemy
-from urllib.parse import quote_plus
 import logging
 
 db = SQLAlchemy()
 
 logger = logging.getLogger('sqlalchemy.engine')
 logger.setLevel(logging.INFO)
-handler = logging.StreamHandler()
-handler.setFormatter(logging.Formatter('%(asctime)s [%(levelname)s] %(message)s'))
-logger.addHandler(handler)
+if not logger.handlers:
+    handler = logging.StreamHandler()
+    handler.setFormatter(logging.Formatter('%(asctime)s [%(levelname)s] %(message)s'))
+    logger.addHandler(handler)
 
 def create_app():
+    from config import Config
     app = Flask(__name__)
-
-    params = quote_plus(
-        "DRIVER=ODBC Driver 17 for SQL Server;"
-        "SERVER=NDVASQLCR01;"
-        "DATABASE=conradTest;"
-        "Trusted_Connection=yes;"
-    )
-
-    app.config['SQLALCHEMY_DATABASE_URI'] = f"mssql+pyodbc:///?odbc_connect={params}"
-    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+    app.config.from_object(Config)
 
     db.init_app(app)
 
+    with app.app_context():
+        from . import models
+        db.create_all()
+
     from .routes import main
     app.register_blueprint(main)
 
-    @app.route("/")
-    def index():
-        return "Hello, you've reached the terrible but functional root of the site."
-
-
     return app