Merge branch 'main' into question-spa-frontend

.env.sample

@@ -1,8 +1,20 @@
 # This is a sample environment configuration file.
 # Copy this file to .env and replace the placeholder values with your own.
+
+# Question Service
 QUESTION_DB_CLOUD_URI=<FILL-THIS-IN>
 QUESTION_DB_LOCAL_URI=mongodb://question-db:27017/question
 QUESTION_DB_USERNAME=user
 QUESTION_DB_PASSWORD=password
 
-NODE_ENV=development
+# User Service
+USER_SERVICE_CLOUD_URI=mongodb+srv://admin:<db_password>@cluster0.uo0vu.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0
+USER_SERVICE_LOCAL_URI=mongodb://127.0.0.1:27017/peerprepUserServiceDB
+
+# Will use cloud MongoDB Atlas database
+ENV=PROD
+
+# Secret for creating JWT signature
+JWT_SECRET=you-can-replace-this-with-your-own-secret
+
+NODE_ENV=development

.gitignore

@@ -1,3 +1,7 @@
-# Ignore IntelliJ IDEA project files
-.idea/
-.env
+**/node_modules
+**/.env
+**/.idea
+# Vim temp files
+*~
+*.swp
+*.swo

docker-compose.yml

@@ -12,6 +12,7 @@ services:
       - ./frontend:/app
     networks:
       - question-network
+      - user-network
 
   question:
     container_name: question
@@ -32,6 +33,7 @@ services:
     networks:
       - question-network
       - question-db-network
+      - user-network
 
   question-db:
     container_name: question-db
@@ -46,11 +48,33 @@ services:
       - question-db-network
     restart: always
 
+  user:
+    container_name: user
+    image: user
+    build:
+      context: services/user
+      dockerfile: Dockerfile
+    ports:
+      - 3001
+    environment:
+      USER_SERVICE_CLOUD_URI: ${USER_SERVICE_CLOUD_URI}
+      USER_SERVICE_LOCAL_URI: ${USER_SERVICE_LOCAL_URI}
+      ENV: ${ENV}
+      JWT_SECRET: ${JWT_SECRET}
+    volumes:
+      - /app/node_modules
+      - ./services/user:/app
+    networks:
+      - user-network
+    restart: always
+
 volumes:
   question-db:
 
 networks:
   question-network:
     driver: bridge
   question-db-network:
+    driver: bridge
+  user-network:
     driver: bridge

services/question/README.md

@@ -295,11 +295,11 @@ uniqueness.
 
 ### Responses:
 
-| Response Code               | Explanation                                                        |
-|-----------------------------|--------------------------------------------------------------------|
-| 201 (Created)               | The question is created successfully.                              |
-| 400 (Bad Request)           | Required fields are missing or invalid or question already exists. |
-| 500 (Internal Server Error) | Unexpected error in the database or server.                        |
+| Response Code               | Explanation                                                         |
+|-----------------------------|---------------------------------------------------------------------|
+| 201 (Created)               | The question is created successfully.                               |
+| 400 (Bad Request)           | Required fields are missing or invalid, or question already exists. |
+| 500 (Internal Server Error) | Unexpected error in the database or server.                         |
 
 ### Command Line Example:
 
@@ -318,12 +318,9 @@ curl -X POST http://localhost:8081/questions -H "Content-Type: application/json"
     "id": 21,
     "title": "New Question",
     "description": "This is a description for a new question.",
-    "topics": [
-      "Data Structures",
-      "Algorithms"
-    ],
+    "topics": ["Data Structures", "Algorithms"],
     "difficulty": "Medium",
-    "_id": "66eedf739672ca081e9fd5ff"
+    "_id": "66f77e7bf9530832bd839239"
   }
 }
 ```
@@ -350,11 +347,12 @@ This endpoint allows updating an existing question. Only the title, description,
 
 ### Responses:
 
-| Response Code               | Explanation                                    |
-|-----------------------------|------------------------------------------------|
-| 200 (OK)                    | Success, the question is updated successfully. |
-| 404 (Not Found)             | Question with the specified `id` not found.    |
-| 500 (Internal Server Error) | Unexpected error in the database or server.    |
+| Response Code               | Explanation                                                                        |
+|-----------------------------|------------------------------------------------------------------------------------|
+| 200 (OK)                    | Success, the question is updated successfully.                                     |
+| 400 (Bad Request)           | Invalid request body such as including `id` or duplicate `title` or `description`. |
+| 404 (Not Found)             | Question with the specified `id` not found.                                        |
+| 500 (Internal Server Error) | Unexpected error in the database or server.                                        |
 
 ### Command Line Example:
 
@@ -370,14 +368,11 @@ curl -X PUT http://localhost:8081/questions/21 -H "Content-Type: application/jso
   "status": "Success",
   "message": "Question updated successfully",
   "data": {
-    "_id": "66eedf739672ca081e9fd5ff",
+    "_id": "66f77e7bf9530832bd839239",
     "id": 21,
-    "title": "Updated Title",
-    "description": "Updated description for the existing question.",
-    "topics": [
-      "Data Structures",
-      "Algorithms"
-    ],
+    "title": "Updated Question Title",
+    "description": "This is the updated description.",
+    "topics": ["Updated Topic"],
     "difficulty": "Hard"
   }
 }
@@ -418,14 +413,11 @@ curl -X DELETE http://localhost:8081/questions/21
   "status": "Success",
   "message": "Question deleted successfully",
   "data": {
-    "_id": "66eedf739672ca081e9fd5ff",
+    "_id": "66f77e7bf9530832bd839239",
     "id": 21,
-    "title": "Updated Title",
-    "description": "Updated description for the existing question.",
-    "topics": [
-      "Data Structures",
-      "Algorithms"
-    ],
+    "title": "Duplicate Title",
+    "description": "This is the updated description.",
+    "topics": ["Updated Topic"],
     "difficulty": "Hard"
   }
 }

services/question/eslint.config.mjs

@@ -14,6 +14,7 @@ export default tseslint.config({
     ],
     rules: {
         '@typescript-eslint/no-explicit-any': 'off',
+        "@typescript-eslint/no-extraneous-class": "off",
 
         // https://stackoverflow.com/questions/68816664/get-rid-of-error-delete-eslint-prettier-prettier-and-allow-use-double
         'prettier/prettier': [

services/question/src/controllers/questionController.ts

@@ -200,6 +200,13 @@ export const updateQuestion = async (req: Request, res: Response) => {
     }
 
     try {
+        const existingQuestion = await Question.findOne({
+            $or: [{ title: updates.title }, { description: updates.description }],
+        }).collation({ locale: 'en', strength: 2 });
+        if (existingQuestion) {
+            return handleBadRequest(res, 'A question with the same title or description already exists.');
+        }
+
         const updatedQuestion = await Question.findOneAndUpdate({ id: parseInt(id, 10) }, updates, {
             new: true,
             runValidators: true,

services/user/.env.sample

@@ -0,0 +1,12 @@
+# User Service
+USER_SERVICE_CLOUD_URI=<cloud_uri>
+USER_SERVICE_LOCAL_URI=mongodb://127.0.0.1:27017/peerprepUserServiceDB
+PORT=3001
+
+# Will use cloud MongoDB Atlas database
+ENV=PROD
+
+# Secret for creating JWT signature
+JWT_SECRET=you-can-replace-this-with-your-own-secret
+
+NODE_ENV=development

services/user/Dockerfile

@@ -0,0 +1,9 @@
+FROM node:20-alpine
+
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm install
+COPY . .
+EXPOSE 3001
+
+CMD ["npm", "start"]

services/user/MongoDBSetup.md

@@ -0,0 +1,60 @@
+# Setting up MongoDB Instance for User Service
+
+1. Visit the MongoDB Atlas Site [https://www.mongodb.com/atlas](https://www.mongodb.com/atlas) and click on "Try Free"
+
+2. Sign Up/Sign In with your preferred method.
+
+3. You will be greeted with welcome screens. Feel free to skip them till you reach the Dashboard page.
+
+4. Create a Database Deployment by clicking on the green `+ Create` Button:
+
+![alt text](./GuideAssets/Creation.png)
+
+5. Make selections as followings:
+
+- Select Shared Cluster
+- Select `aws` as Provider
+
+![alt text](./GuideAssets/Selection1.png)
+
+- Select `Singapore` for Region
+
+![alt text](./GuideAssets/Selection2.png)
+
+- Select `M0 Sandbox` Cluster (Free Forever - No Card Required)
+
+> Ensure to select M0 Sandbox, else you may be prompted to enter card details and may be charged!
+
+![alt text](./GuideAssets/Selection3.png)
+
+- Leave `Additional Settings` as it is
+
+- Provide a suitable name to the Cluster
+
+![alt text](./GuideAssets/Selection4.png)
+
+6. You will be prompted to set up Security for the database by providing `Username and Password`. Select that option and enter `Username` and `Password`. Please keep this safe as it will be used in User Service later on.
+
+![alt text](./GuideAssets/Security.png)
+
+7. Next, click on `Add my Current IP Address`. This will whiteliste your IP address and allow you to connect to the MongoDB Database.
+
+![alt text](./GuideAssets/Network.png)
+
+8. Click `Finish and Close` and the MongoDB Instance should be up and running.
+
+## Whitelisting All IP's
+
+1. Select `Network Access` from the left side pane on Dashboard.
+
+![alt text](./GuideAssets/SidePane.png)
+
+2. Click on the `Add IP Address` Button
+
+![alt text](./GuideAssets/AddIPAddress.png)
+
+3. Select the `ALLOW ACCESS FROM ANYWHERE` Button and Click `Confirm`
+
+![alt text](./GuideAssets/IPWhitelisting.png)
+
+Now, any IP Address can access this Database.