Set up db connection in app

app.py

@@ -0,0 +1,23 @@
+from flask import Flask, render_template, request, redirect, abort, url_for, make_response
+from dotenv import load_dotenv
+import os
+import pymongo
+from pymongo import MongoClient
+
+load_dotenv()
+
+app = Flask(__name__)
+
+uri = os.getenv("MONGO_URI")
+db_name = os.getenv("MONGO_DBNAME")
+
+# Create a new client and connect to the server
+client = MongoClient(uri)
+db = client[db_name]
+
+# Send a ping to confirm a successful connection
+try:
+    client.admin.command('ping')
+    print("Connected to MongoDB!")
+except Exception as e:
+    print("MongoDB connection error:", e)