karanmehta1806/library-management

How karanmehta1806/library-management works

This is a MERN library-management application for students, librarians, and administrators. Its principal workflow is browsing books, requesting an issue, librarian approval, and tracking returns and fines; separate capabilities cover account management, catalog administration, analytics, contact messages, and password reset. The backend routes requests through role-protected Express routes to controllers and MongoDB models. The excerpts show this backend structure and frontend page routing, but not the frontend API-call implementations, so no frontend-to-backend request edges are asserted.

Main entry points: App.jsx Page router · routes/books.js Book routes · controller/books.js Catalog and borrowing · index.js Express server

Components 31

Web application

Page router frontend/src/App.jsx
Book discovery frontend/src/pages/user/books.jsx
Book details frontend/src/pages/user/bookdetails.jsx
Home page frontend/src/pages/user/home.jsx
Student profile frontend/src/pages/user/profile.jsx
Admin analytics frontend/src/pages/admin/admindashboard.jsx
Book administration frontend/src/pages/admin/viewbook.jsx
Issue requests frontend/src/pages/librarian/LibrarianRequest.jsx
Return requests frontend/src/pages/librarian/ReturnRequest.jsx

API and access

Express server backend/index.js
Book routes backend/routes/books.js
Home routes backend/routes/home.js
Librarian routes backend/routes/librarian.js
User routes backend/routes/user.js
JWT authentication backend/middlewares/userAuth.js
Role authorization backend/middlewares/checkRole.js

Catalog and circulation

Catalog and borrowing backend/controller/books.js
Circulation approvals backend/controller/librarian.js
Book records backend/model/BookModel.js
Borrow records backend/model/BorrowModel.js
Fine calculation backend/utils/fineCalculator.js
Home cache backend/utils/cache.js
Image uploads backend/utils/cloudConfig.js

Accounts and messaging

Account services backend/controller/user.js
Admin services backend/controller/admin.js
User records backend/model/UserModel.js
Contact messages backend/model/ContactModel.js
OTP records backend/model/OtpModel.js

Other components

Student
Librarian
Administrator

Connections 40

Student → Book discovery: browses
Student → Book details: views details
Student → Student profile: tracks borrowing
Librarian → Issue requests: reviews issues
Librarian → Return requests: reviews returns
Administrator → Admin analytics: views analytics
Administrator → Book administration: manages books
Page router → Home page: routes to frontend/src/App.jsx
Page router → Book discovery: routes to frontend/src/App.jsx
Page router → Book details: routes to frontend/src/App.jsx
Page router → Student profile: routes to frontend/src/App.jsx
Page router → Admin analytics: routes to frontend/src/App.jsx
Page router → Book administration: routes to frontend/src/App.jsx
Page router → Issue requests: routes to frontend/src/App.jsx
Page router → Return requests: routes to frontend/src/App.jsx
Express server → Book routes: mounts backend/index.js
Express server → Home routes: mounts backend/index.js
Express server → Librarian routes: mounts backend/index.js
Express server → User routes: mounts backend/index.js
Book routes → JWT authentication: checks token backend/routes/books.js
Book routes → Role authorization: checks role backend/routes/books.js
Book routes → Catalog and borrowing: dispatches backend/routes/books.js
Librarian routes → JWT authentication: checks token backend/routes/librarian.js
Librarian routes → Role authorization: checks role backend/routes/librarian.js
Librarian routes → Circulation approvals: dispatches backend/routes/librarian.js
Catalog and borrowing → Book records: reads and writes backend/controller/books.js
Catalog and borrowing → Borrow records: reads and writes backend/controller/books.js
Catalog and borrowing → Fine calculation: calculates fines backend/controller/books.js
Catalog and borrowing → Home cache: clears cache backend/controller/books.js
Book routes → Image uploads: uses uploads backend/routes/books.js
Circulation approvals → User records: queries users backend/controller/librarian.js
Circulation approvals → Borrow records: updates borrowing backend/controller/librarian.js
Circulation approvals → Book records: updates books backend/controller/librarian.js
User routes → Account services: dispatches backend/routes/user.js
Account services → User records: reads and writes backend/controller/user.js
Account services → Contact messages: saves messages backend/controller/user.js
Account services → OTP records: manages OTPs backend/controller/user.js
User routes → JWT authentication: checks token backend/routes/user.js
User routes → Role authorization: checks role backend/routes/user.js
Admin services → User records: manages accounts

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