fixed with reference to Raymond's work

app/app.py

@@ -4,7 +4,7 @@ import logging
 from flask import Flask
 from flask_apscheduler import APScheduler
 from asgiref.wsgi import WsgiToAsgi
-from routes.category import category_bp
+from controllers.category import category_bp
 
 # from routes.summary import summary_bp
 

app/controllers/category.py

@@ -0,0 +1,9 @@
+from database.mongodb import category_collection
+def get_categories():
+    
+    """
+    Returns all categories and their corresponding sites
+
+    """
+    categories = list(category_collection.find({}, {"_id": 0, "category": 1, "site": 1}))
+    return categories

app/controllers/finfast-summary-backend.code-workspace

@@ -0,0 +1,7 @@
+{
+    "folders": [
+        {
+            "path": "../.."
+        }
+    ]
+}

app/database/__init__.py

@@ -0,0 +1,10 @@
+"""Module for Mongodb database"""
+from database.mongodb import MongodbClient, FinFastMongodbClient
+
+MongoClient = MongodbClient
+FinFastMongoClient = FinFastMongodbClient
+
+__all__ = [
+    "MongoClient",
+    "FinFastMongoClient"
+]

app/database/mongodb.py

@@ -0,0 +1,7 @@
+"""MongoDB database interaction module."""
+import os
+from pymongo import MongoClient
+
+MongodbClient = MongoClient(os.getenv('MONGODB_URI'))
+FinFastMongodbClient = MongoClient(os.getenv("MONGODB_FINFAST_URI"))
+category_collection = FinFastMongodbClient["FinFAST_China"]["Category"]

app/routes/__init__.py

@@ -0,0 +1,4 @@
+"""This module sets up the main Blueprint for the Flask application."""
+from flask import Blueprint
+
+category_bp = Blueprint("category", __name__)

app/routes/category_router.py

@@ -0,0 +1,21 @@
+from controllers.category import get_categories
+from flask import jsonify
+from . import category_bp
+
+@category_bp.route("/api/category", methods=["GET"])
+def fetch_categories():
+    """
+    Handles GET requests to retrieve all categories.
+
+    Returns:
+        list[dict]: JSON response containing categories and their associated sites.
+
+    Raises:
+        tbd
+
+    Endpoint:
+        GET /api/category
+
+    """
+    category_data = get_categories()
+    return jsonify(category_data)

routes/category.py

@@ -1,22 +0,0 @@
-from flask import Blueprint, Flask, jsonify, abort
-from pymongo.mongo_client import MongoClient
-from pymongo.server_api import ServerApi
-from pymongo.errors import PyMongoError
-import os
-
-category_bp = Blueprint("category", __name__)
-
-uri = os.getenv("uri")
-
-client = MongoClient(uri)
-
-db = client["FinFAST_China"]
-collection = db["Category"]
-
-@category_bp.route("/api/category", methods=["GET"])
-def get_categories():
-        # fetched all docs in 'Category' collection excluding _id field
-        categories = list(db["Category"].find({}, {"_id": 0, "category": 1, "site": 1}))
-        if not categories:
-            abort(404, description="No categories found")
-        return jsonify(categories)