feat: Add admin dashboard foundation with user statistics

[Sappymukherjee214]

• Add adminMiddleware for role-based access control
• Create GET /api/v1/admin/stats endpoint for admin statistics
• Implement getAdminStats service to count users by role
• Add admin dashboard UI with user statistics cards
• Display total users, admins, regular users, and creators
• Show recent 10 registered users in table format
• Add proper error handling and authentication checks
• Update routes to include admin dashboard path

[gemini-code-assist]

Summary of Changes

Hello @Sappymukherjee214, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request establishes the foundational elements for an admin dashboard, providing administrators with a centralized view of user statistics. It integrates both backend and frontend components, enabling secure data retrieval and intuitive visualization of user demographics and recent activity. The changes ensure that administrative data is accessible only to authorized personnel while offering a clear, at-a-glance summary of the platform's user base.

Highlights

• Admin Dashboard Backend: Introduced a new backend endpoint /api/v1/admin/stats to fetch user statistics, including total users, counts by role (admin, regular, creator), and the 10 most recently registered users.
• Role-Based Access Control: Implemented an adminMiddleware to secure the new admin endpoint, ensuring that only authenticated users with 'admin' roles can access these statistics.
• Admin Dashboard Frontend: Developed a new React component for the admin dashboard UI, which consumes the backend statistics and displays them visually using cards for user counts and a table for recent user registrations.
• Routing and Error Handling: Added new routes for the admin dashboard on both the backend and frontend, and incorporated robust error handling and authentication checks within the dashboard component to manage access and display appropriate messages.
• Constants for Admin Operations: Added new constants in user.constant.ts for messages related to admin statistics fetching and access control.

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[Sappymukherjee214]

@abhishek-nexgen-dev I have added the admin dashboard foundation. Please assign it to me.

[gemini-code-assist]

Code Review

This pull request introduces a new admin dashboard feature, including backend endpoints for statistics and a frontend UI to display them. The changes are well-structured, with new middleware for admin access control and a dedicated service for fetching data.

My review focuses on improving performance, maintainability, and robustness. I've identified a few areas for improvement:

• The backend can be optimized to use a single database query for statistics, significantly improving performance.
• Error handling in the new admin middleware can be more precise with status codes.
• The frontend has a hardcoded API URL which should be moved to environment variables.
• There's some route definition redundancy in the frontend that could be cleaned up for better modularity.

Overall, this is a great addition. Addressing these points will make the implementation more efficient and maintainable.

[AMANkumar0004]

@abhishek-nexgen-dev
community admin here
why are you self assigning this PR to yourself ??
assign to the contributor ASAP.
and add ECWoC label before merging

[abhishek-nexgen-dev]

@AMANkumar0004 please check again

[abhishek-nexgen-dev]

@Sappymukherjee214 bro can you attach some screenshot

[abhishek-nexgen-dev]

@AMANkumar0004 bro by mistake i assign my self and after some time I got the rejection email

Bro please do some things

[abhishek-nexgen-dev]

@Sappymukherjee214 add some screenshot