tajwarul23/library_management_backend

How tajwarul23/library_management_backend works

This is a library-management backend: clients use authenticated APIs to discover books, reserve or borrow them, and manage student, inventory, and circulation records; the API returns operation results. Authentication also supports registration, verification, login, and password recovery. Scheduled jobs expire reservations and process overdue returns, while email supports account and circulation notifications. The README gives no further capability details; unsampled routes and controllers are represented only where the source index supports them.

Main entry points: Admin.controller.js Admin operations · server.js Express server · Student.controller.js Student operations · notifyWaitlistUsers.js Waitlist notifications

Components 24

API and access

Express server server.js
Auth routes Routes/Auth.routes.js
Student routes Routes/Student.router.js
Admin routes Routes/Admin.router.js
User routes Routes/User.router.js
Auth middleware Middlewares/Auth.js

Library operations

Admin operations Controllers/Admin.controller.js
Student operations Controllers/Student.controller.js
Book inventory Models/Book.model.js
Reservations Models/ReserveBook.model.js
Issued books Models/IssuedBook.model.js
Waitlist Models/Waitlist.model.js

Identity and accounts

User operations Controllers/User.controller.js
Authentication Controllers/Auth.controller.js
Student records Models/Student.model.js
Student accounts Models/student_user.model.js
Admin accounts Models/admin_user.model.js

Notifications and jobs

Reservation expiry cron/expireservation.js
Return expiry cron/expirereturnbook.js
Waitlist notifications Utils/notifyWaitlistUsers.js
Issue email Utils/sendBookIssuedEmail.js
Mail transport Utils/transporter.js

Other components

API client
Gmail SMTP

Connections 41

API client → Express server: sends requests
Express server → Auth routes: mounts routes server.js
Express server → Student routes: mounts routes server.js
Express server → Admin routes: mounts routes server.js
Express server → User routes: mounts routes server.js
Auth routes → Authentication: dispatches to Routes/Auth.routes.js
Student routes → Student operations: dispatches to Routes/Student.router.js
Admin routes → Admin operations: dispatches to Routes/Admin.router.js
User routes → User operations: dispatches to Routes/User.router.js
Student routes → Auth middleware: guards routes Routes/Student.router.js
Admin routes → Auth middleware: guards routes Routes/Admin.router.js
User routes → Auth middleware: guards routes Routes/User.router.js
Auth middleware → Student accounts: loads student Middlewares/Auth.js
Auth middleware → Admin accounts: loads admin Middlewares/Auth.js
Authentication → Student accounts: manages accounts Controllers/Auth.controller.js
Authentication → Admin accounts: manages accounts Controllers/Auth.controller.js
Authentication → Student records: checks enrollment Controllers/Auth.controller.js
Admin operations → Book inventory: manages inventory Controllers/Admin.controller.js
Admin operations → Reservations: handles reservations Controllers/Admin.controller.js
Admin operations → Issued books: manages loans Controllers/Admin.controller.js
Admin operations → Student records: manages students Controllers/Admin.controller.js
Admin operations → Student accounts: looks up users Controllers/Admin.controller.js
Student operations → Book inventory: searches inventory Controllers/Student.controller.js
Student operations → Reservations: creates reservations Controllers/Student.controller.js
Student operations → Issued books: checks loans Controllers/Student.controller.js
Student operations → Waitlist notifications: notifies on release Controllers/Student.controller.js
Admin operations → Waitlist notifications: notifies on return Controllers/Admin.controller.js
Admin operations → Issue email: sends issue notice Controllers/Admin.controller.js
Waitlist notifications → Book inventory: reads book Utils/notifyWaitlistUsers.js
Waitlist notifications → Waitlist: reads and clears Utils/notifyWaitlistUsers.js
Waitlist notifications → Mail transport: sends mail Utils/notifyWaitlistUsers.js
Issue email → Mail transport: sends mail Utils/sendBookIssuedEmail.js
Mail transport → Gmail SMTP: connects SMTP Utils/transporter.js
Express server → Reservation expiry: starts job server.js
Express server → Return expiry: starts job server.js
Reservation expiry → Reservations: expires records cron/expireservation.js
Reservation expiry → Book inventory: updates availability cron/expireservation.js
Return expiry → Issued books: checks overdue loans cron/expirereturnbook.js
Return expiry → Student accounts: loads borrowers cron/expirereturnbook.js
Return expiry → Issue email: sends reminders cron/expirereturnbook.js
User operations → Student accounts: manages profile Controllers/User.controller.js

More JavaScript diagrams: dotenvx/dotenvx · postlight/parser · fengyuanchen/compressorjs · mscdex/ssh2 · codingtrain/website-archive

Drawn by GitDiagram on September 30, 2026 from the repository's file tree, README and source files. Read as Markdown ·