This section provides a textual representation of the class structure and relationships in our API.

• Description: Our Node.js Express application that handles API requests and routes.
• Attributes:
  • app: The Express instance.
• Endpoints:
  • POST /api: Create a new person.
  • GET /api/:userId: Get details of a person by ID.
  • PUT /api/:userId: Update details of a person by ID.
  • DELETE /api/:userId: Delete a person by ID.
  • POST /api/byname: Create a new person by name.
  • GET /api/byname/:userName: Get people by name.
  • GET /api/allusers: Get all users.

• Description: The Firebase Admin SDK configuration and connection.
• Attributes:
  • admin: The Firebase Admin instance.
  • databaseURL: The Firebase database URL.
  • credential: Authentication credentials.

• Description: Firebase Firestore, our NoSQL database.
• Attributes:
  • collection('people'): The 'people' collection where user data resides.

• Description: A model class representing an individual person.
• Attributes:
  • name: The person's name.
  • age: The person's age.
  • email: The person's email address.
• Methods:
  • add(): Add a new person.
  • get(): Get details of a person.
  • update(): Update a person's details.
  • delete(): Delete a person.
  • getAll(): Get details of all users.

• The Express App interacts with Firebase Admin and Firestore to perform CRUD operations on the Person model.
• The Person model interacts with Firestore to read, update, delete, and fetch all person records.

This textual representation provides an overview of the key components and their interactions in our API.

+-------------------+       +-----------------------+
|     Express App  |       |    Firebase Admin    |
+-------------------+       +-----------------------+
| - app             |       | - admin               |
|                   |       | - databaseURL         |
| + POST /api       |       | - credential          |
| + GET /api/:userId|       |                       |
| + PUT /api/:userId|       |                       |
| + DELETE /api/:userId|    |                       |
| + POST /api/byname|       +-----------------------+
| + GET /api/byname/:userName|
| + GET /api/allusers|     
|                   |
+-------------------+
         |
         |
         |
+-------------------+
|      Firestore    |
+-------------------+
|                   |
| + collection('people')|
|                   |
+-------------------+
         |
         |
         |
+-------------------+
|      Person       |
+-------------------+
| - name            |
| - age             |
| - email           |
| + add()           |
| + get()           |
| + update()        |
| + delete()        |
| + getAll()        |
+-------------------+