DEVOPS-10: Replace Trello with MongoDB

.env.j2

@@ -5,12 +5,6 @@ FLASK_ENV=production
 # Change the following values for local development.
 SECRET_KEY={{ secret_key }}
 
-# Change these values for your Trello environment
-API_KEY={{ trello_api_key }}
-TOKEN={{ trello_token }}
-
-# Change these values for your Trello board
-BOARD_ID=xRzO95hQ
-TO_DO_LIST_ID=62ff6a8396e27c0018225b3e
-DOING_LIST_ID=6335777c3711480061bf2a59
-DONE_LIST_ID=62ff6a85ecf4d000d4528e15
+# Change these values for your DB
+DB_CONNECTION_STRING={{ db_connection_string }}
+DB_NAME={{ db_name }}

.env.template

@@ -5,12 +5,6 @@ FLASK_ENV=development
 # Change the following values for local development.
 SECRET_KEY=secret-key
 
-# Change these values for your Trello environment
-API_KEY=trello-api-key
-TOKEN=trello-token
-
-# Change these values for your Trello board
-BOARD_ID=trello-board-id
-TO_DO_LIST_ID=trello-to-do-list-id
-DOING_LIST_ID=trello-doing-list-id
-DONE_LIST_ID=trello-done-list-id
+# Change these values for your DB
+DB_CONNECTION_STRING=db-connection-string
+DB_NAME=db-name

.env.test

@@ -1,15 +1,9 @@
 # Flask server configuration.
-FLASK_SKIP_DOTENV=true
+FLASK_SKIP_DOTENV=True
 
 # Change the following values for local development.
 SECRET_KEY=test-secret-key
-
-# Change these values for your Trello environment
-API_KEY=test-api-key
-TOKEN=test-token
 
-# Change these values for your Trello board
-BOARD_ID=test-board-id
-TO_DO_LIST_ID=test-to-do-list-id
-DOING_LIST_ID=test-doing-list-id
-DONE_LIST_ID=test-done-list-id
+# Change these values for your DB
+DB_CONNECTION_STRING=mongodb://fakemongo.com
+DB_NAME=name

README.md

@@ -34,9 +34,9 @@ $ cp .env.template .env  # (first time only)
 
 The `.env` file is used by flask to set environment variables when running `flask run`. This enables things like development mode (which also enables features like hot reloading when you make a file change). There's also a [SECRET_KEY](https://flask.palletsprojects.com/en/1.1.x/config/#SECRET_KEY) variable which is used to encrypt the flask session cookie.
 
-## Trello integration
+## Database integration
 
-This app uses a Trello board to store the items. You should set up a Trello board, with three lists for 'To Do', 'Doing' and 'Done'. Update your `.env` file with the board and list id's, as well as your Trello API Key and Token.
+This app uses a MongoDB database to store the items. You should update your `.env` file with your MongoDB's primary connection string and database name.
 
 ## Running the App locally
 

ansible-playbook.yml

@@ -6,11 +6,11 @@
     - name: secret_key
       prompt: What is the app secret key?
 
-    - name: trello_api_key
-      prompt: What is the Trello API key?
+    - name: db_connection_string
+      prompt: What is the primary database connection string?
 
-    - name: trello_token
-      prompt: What is the Trello token?
+    - name: db_name
+      prompt: What is the database name?
 
   tasks:
   - name: Install git

pyproject.toml

@@ -10,6 +10,8 @@ Flask = "^2.0.3"
 python-dotenv = "^0.14.0"
 requests = "^2.28.1"
 gunicorn = "^20.1.0"
+pymongo = "^4.3.3"
+mongomock = "^4.1.2"
 
 [tool.poetry.dev-dependencies]
 pytest = "^7.2.0"

tests/test_integration.py

@@ -1,41 +1,24 @@
 import pytest
 from dotenv import load_dotenv, find_dotenv
 from todo_app import app
-import requests
-import os
+import mongomock
+
+from todo_app.data.db_items import add_card
 
 @pytest.fixture
 def client():
   file_path = find_dotenv('.env.test')
-
   load_dotenv(file_path, override=True)
-  test_app = app.create_app()
 
-  with test_app.test_client() as client:
-    yield client
+  with mongomock.patch(servers=(('fakemongo.com', 27017),)):
+    test_app = app.create_app()
+    with test_app.test_client() as client:
+      yield client
 
-def test_index_page(monkeypatch, client):
+def test_index_page(client):
+  add_card('Test card')
 
-  monkeypatch.setattr(requests, 'get', get_lists_stub)
   response = client.get('/')
 
   assert response.status_code == 200
   assert 'Test card' in response.data.decode()
-
-class StubResponse():
-  def __init__(self, fake_response_data):
-    self.fake_response_data = fake_response_data
-
-  def json(self):
-    return self.fake_response_data
-
-def get_lists_stub(url):
-  fake_response_data = None
-  query_string = f'?key={os.environ.get("API_KEY")}&token={os.environ.get("TOKEN")}&cards=open'
-  if url == f'https://api.trello.com/1/boards/{os.environ.get("BOARD_ID")}/lists{query_string}':
-    fake_response_data = [{
-      'id': '123abc',
-      'name': 'To Do',
-      'cards': [{'id': '456', 'name': 'Test card'}]
-    }]
-  return StubResponse(fake_response_data)

todo_app/app.py

@@ -1,7 +1,7 @@
 from flask import Flask, redirect, render_template, request
 from todo_app.flask_config import Config
 from todo_app.models.ViewModel import ViewModel
-from todo_app.data.trello_items import get_cards, add_card, move_card_to_list
+from todo_app.data.db_items import get_cards, add_card, change_card_status
 import os
 
 def create_app():
@@ -24,9 +24,9 @@ def submit_form():
     @app.route('/update-status/<card_id>/<current_list>', methods=["POST"])
     def update_status(card_id, current_list):
         if current_list == 'To Do':
-            move_card_to_list(card_id, os.getenv('DOING_LIST_ID'))
+            change_card_status(card_id, "Doing")
         if current_list == 'Doing':
-            move_card_to_list(card_id, os.getenv('DONE_LIST_ID'))
+            change_card_status(card_id, "Done")
         return redirect('/')
 
     return app

todo_app/data/db_items.py

@@ -0,0 +1,21 @@
+import os
+from todo_app.models.Item import Item
+import pymongo
+
+def get_collection():
+  client = pymongo.MongoClient(f'{os.getenv("DB_CONNECTION_STRING")}')
+  db = client[f'{os.getenv("DB_NAME")}']
+  return db.card
+
+def get_cards():
+  collection = get_collection()
+  cards = collection.find()
+  return [Item.from_db_card(card) for card in cards]
+
+def add_card(card_name):
+  collection = get_collection()
+  collection.insert_one({"name": card_name, "status": "To Do"})
+
+def change_card_status(card_id, status):
+  collection = get_collection()
+  collection.update_one({"_id": card_id}, {"$set": {"status": status}})

todo_app/models/Item.py

@@ -3,7 +3,7 @@ def __init__(self, id, name, status = 'To Do'):
         self.id = id
         self.name = name
         self.status = status
-
+    
     @classmethod
-    def from_trello_card(cls, card, list):
-        return cls(card['id'], card['name'], list['name'])
+    def from_db_card(cls, card):
+        return cls(card['_id'], card['name'], card['status'])