Label Feature API implementation

[kavyashri-as]

Overview

Implement the Label feature API for the Task Manager App. This feature allows users to categorize their tasks using labels, making it easier to organize and filter tasks.

Features to Implement

• Create Label – POST /labels – Create a new label with a name and color
• Get All Labels – GET /labels – Retrieve all available labels
• Get Label by ID – GET /labels/:id – Retrieve a specific label
• Update Label – PUT /labels/:id – Update a label's name or color
• Delete Label – DELETE /labels/:id – Delete a label
• Assign Label to Task – POST /tasks/:id/labels – Assign one or more labels to a task
• Remove Label from Task – DELETE /tasks/:id/labels/:labelId – Remove a label from a task
• Filter Tasks by Label – GET /tasks?label=:labelName – Filter tasks based on their assigned label

Acceptance Criteria

• Labels can be created, read, updated, and deleted (CRUD)
• Labels can be assigned to and removed from tasks
• Tasks can be filtered by label
• All endpoints return appropriate HTTP status codes and JSON responses
• Input validation is in place for label creation/update
• Unit/integration tests cover the new endpoints

Technical Notes

• Add a labels table/collection in the database
• Add a task_labels join table for the many-to-many relationship between tasks and labels
• Update database.js with the new schema
• Add label routes in index.js
• Update frontend (public/script.js, views/index.ejs) to support label assignment and filtering