# jamil-bs23/project_lms architecture

> Architecture diagram of the GitHub repository jamil-bs23/project_lms, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/jamil-bs23/project_lms
- Repository: https://github.com/jamil-bs23/project_lms

## Overview

1. **Top-level structure**
   - The repository is a split full-stack LMS: a **FastAPI backend** in `backend/` and a **React/Vite frontend** in `frontend_V01/`.
   - The architecture is centered on a browser SPA talking to a JSON API over HTTP, with PostgreSQL for relational data and MinIO for file/object storage.

2. **Frontend is a role-aware SPA**
   - The frontend uses **React + Vite** with **React Router** and **Context-based auth state** (`src/Providers/AuthProvider.jsx`, `src/context/UserContext.jsx`).
   - Route protection is a major boundary: there are dedicated protected-route components and separate layout shells for **admin** and **user** experiences.
   - The page tree shows distinct domains: auth, home/catalog, book details, borrowing/history, calendar, settings, admin dashboards, category/book management, uploads, and donation requests.

3. **Frontend component layering**
   - The UI is built from reusable components such as book cards/sliders, navbars/headers/footers, dashboards sidebars, pagination, calendars, and upload forms.
   - This suggests a composition model where pages assemble shared presentational components rather than embedding all logic in page files.
   - `src/api.js` is the likely HTTP boundary to the backend, keeping API access separate from rendering logic.

4. **Backend is organized by feature routers**
   - `backend/app/api/` contains the HTTP surface, with routers for **auth**, **books**, **borrow**, **categories**, **book review**, **rate book**, **donation book**, **uploads**, **users**, **admin**, and **settings**.
   - This is the primary request ingress: client calls land in these router modules before reaching business logic.

5. **Backend business/data access split**
   - `backend/app/crud/` is the persistence/business-data layer, with CRUD modules mirroring the domain entities.
   - `backend/app/models/` contains SQLAlchemy models for `book`, `borrow`, `category`, `donation_book`, `settings`, `user`, `book_review`, and `user_rating`.
   - `backend/app/schemas/` contains the request/response contracts used by FastAPI validation and serialization.
   - This separation indicates a clear flow: **router → CRUD/service logic → ORM model → database**.

6. **Core authentication and security boundary**
   - `backend/app/core/security.py` and the README indicate **JWT-based authentication** with **RBAC**.
   - Admin-specific APIs and user-facing APIs are separated at the route layer, with protected actions like borrowing, returning, managing books, and viewing all loans gated by role.
   - `core/exceptions.py` likely centralizes API error handling and domain-specific failures.

7. **Library domain flows**
   - The main business flows are:
     - **Search/browse books**
     - **Borrow and return books**
     - **Rate and review books**
     - **View loan history**
     - **Admin manage books/categories/users/loans**
   - The data model implies strong relationships between users, books, loans/borrows, reviews, and ratings, with stock/availability tracked in the book record.

8. **Digital asset storage and uploads**
   - File handling is a first-class subsystem: the backend has `utils/minio_utils.py`, an `uploads` API, and media files under `backend/media/uploads/`.
   - The repo contains sample stored assets (`.pdf`, `.mp3`), which suggests the system manages downloadable digital content and media alongside metadata in the database.
   - In architecture terms, this is a second storage plane: **PostgreSQL for metadata + MinIO/object storage for binary files**.

9. **Administrative and operational features**
   - The frontend includes admin pages for dashboarding, settings, feature management, book/category management, and history.
   - The backend mirrors this with dedicated admin routes and settings CRUD.
   - This implies an operational admin console rather than just a user-facing catalog app.

10. **Database lifecycle and schema evolution**
    - `backend/alembic/` with many revision files shows the schema evolved through multiple branches and merge heads, so migrations are a key part of the system architecture.
    - The database is not static; the model set has grown around books, borrow records, donations, reviews, ratings, and settings.

11. **Deployment/runtime boundary**
    - The backend includes `Dockerfile`, `start.sh`, `runtime.txt`, and `render.yml`, indicating containerized/deployed execution with a Render-style target.
    - The frontend has its own `Dockerfile` and `nginx.conf`, which suggests production deployment as a static build served by Nginx.
    - `docker-compose.yml` at the repo root likely coordinates local multi-service development.

12. **What an architecture diagram should emphasize**
    - Show a **React SPA** with auth-protected user/admin routes.
    - Show a **FastAPI API layer** split into feature routers.
    - Show a **CRUD/model/schema backend core** between API and database.
    - Show **PostgreSQL** as the system of record and **MinIO/media storage** for uploaded PDFs/audio/assets.
    - Show **JWT/RBAC** as the control plane that determines access to user vs admin flows.

Main entry points: [`frontend_V01/src/api.js`](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/api.js) (API Client), [`frontend_V01/src/App.jsx`](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/App.jsx) (React SPA), [`backend/app/crud/book.py`](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/crud/book.py) (CRUD Layer), [`backend/app/api/admin.py`](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/admin.py) (Admin API)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_frontend["Frontend SPA"]
  node_spa["React SPA<br/>frontend app<br/>[App.jsx]"]
  node_auth_provider["Auth State<br/>context<br/>[AuthProvider.jsx]"]
  node_api_client["API Client<br/>http boundary<br/>[api.js]"]
  node_route_guard{{"Route Guard<br/>protected routing<br/>[ProtectedRoute.jsx]"}}
  node_user_shell["User Shell<br/>layout<br/>[UserLayout.jsx]"]
  node_admin_shell["Admin Shell<br/>layout"]
  node_content_pages["Content Pages<br/>[Home.jsx]"]
  node_admin_pages["Admin Pages<br/>[Dashboad.jsx]"]
  node_ui_components["UI Components<br/>shared components<br/>[BookCard.jsx]"]
end

subgraph group_backend_api["Backend API"]
  node_auth_router["Auth API<br/>router<br/>[auth.py]"]
  node_books_router["Books API<br/>router<br/>[books.py]"]
  node_loan_router["Borrow API<br/>router<br/>[borrow.py]"]
  node_admin_router["Admin API<br/>router<br/>[admin.py]"]
  node_media_router["Uploads API<br/>router<br/>[uploads.py]"]
end

subgraph group_backend_core["Backend Core"]
  node_app_core["Core Services<br/>backend core<br/>[main.py]"]
  node_security{{"JWT/RBAC<br/>security<br/>[security.py]"}}
  node_crud_layer["CRUD Layer<br/>service/data access<br/>[book.py]"]
  node_schema_layer["Schemas<br/>contracts<br/>[book.py]"]
  node_orm_models[("ORM Models<br/>database models<br/>[book.py]")]
end

subgraph group_storage_runtime["Storage & Runtime"]
  node_migrations["Migrations<br/>schema evolution<br/>[env.py]"]
  node_postgres[("PostgreSQL<br/>relational database")]
  node_minio[("Object Storage<br/>binary storage<br/>[minio_utils.py]")]
  node_deployment["Deployment<br/>runtime<br/>[docker-compose.yml]"]
end

node_spa -->|"uses"| node_auth_provider
node_spa -->|"protects"| node_route_guard
node_spa -->|"calls"| node_api_client
node_spa -->|"renders"| node_user_shell
node_spa -->|"renders"| node_admin_shell
node_content_pages -->|"composes"| node_ui_components
node_admin_pages -->|"composes"| node_ui_components
node_api_client -->|"requests"| node_auth_router
node_api_client -->|"requests"| node_books_router
node_api_client -->|"requests"| node_loan_router
node_api_client -->|"requests"| node_admin_router
node_api_client -->|"requests"| node_media_router
node_auth_router -->|"uses"| node_security
node_admin_router -->|"uses"| node_security
node_loan_router -->|"delegates"| node_crud_layer
node_books_router -->|"delegates"| node_crud_layer
node_admin_router -->|"delegates"| node_crud_layer
node_crud_layer -->|"maps to"| node_orm_models
node_schema_layer -.->|"serializes"| node_orm_models
node_orm_models -->|"persists"| node_postgres
node_migrations -->|"evolves"| node_postgres
node_media_router -->|"stores"| node_minio
node_app_core -->|"configures"| node_security
node_app_core -->|"orchestrates"| node_crud_layer
node_deployment -.->|"serves"| node_spa
node_deployment -.->|"runs"| node_app_core

click node_spa "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/App.jsx"
click node_auth_provider "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/Providers/AuthProvider.jsx"
click node_api_client "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/api.js"
click node_route_guard "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/routes/ProtectedRoute.jsx"
click node_user_shell "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/components/UserSidebar/UserLayout.jsx"
click node_admin_shell "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/components/DashboardSidebar/DashboardSidebar.jsx"
click node_content_pages "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/pages/Home/Home.jsx"
click node_admin_pages "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/pages/Dashboad/Dashboad.jsx"
click node_ui_components "https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/components/BookCard/BookCard.jsx"
click node_auth_router "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/auth.py"
click node_books_router "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/books.py"
click node_loan_router "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/borrow.py"
click node_admin_router "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/admin.py"
click node_media_router "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/uploads.py"
click node_app_core "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/main.py"
click node_security "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/core/security.py"
click node_crud_layer "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/crud/book.py"
click node_schema_layer "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/schemas/book.py"
click node_orm_models "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/models/book.py"
click node_migrations "https://github.com/jamil-bs23/project_lms/blob/main/backend/alembic/env.py"
click node_minio "https://github.com/jamil-bs23/project_lms/blob/main/backend/app/utils/minio_utils.py"
click node_deployment "https://github.com/jamil-bs23/project_lms/blob/main/docker-compose.yml"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_spa,node_auth_provider,node_api_client,node_route_guard,node_user_shell,node_admin_shell,node_content_pages,node_admin_pages,node_ui_components toneBlue
class node_auth_router,node_books_router,node_loan_router,node_admin_router,node_media_router toneAmber
class node_app_core,node_security,node_crud_layer,node_schema_layer,node_orm_models toneMint
class node_migrations,node_postgres,node_minio,node_deployment toneRose
```

## Components

### Frontend SPA

React/Vite client with role-aware routing and reusable UI components.

- [React SPA](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/App.jsx): frontend app · Browser client built with React and Vite. · `frontend_V01/src/App.jsx`
- [Auth State](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/Providers/AuthProvider.jsx): context · Client-side auth and user context. · `frontend_V01/src/Providers/AuthProvider.jsx`
- [API Client](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/api.js): http boundary · Frontend HTTP access to the backend API. · `frontend_V01/src/api.js`
- [Route Guard](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/routes/ProtectedRoute.jsx): protected routing · Protects authenticated and role-based views. · `frontend_V01/src/routes/ProtectedRoute.jsx`
- [User Shell](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/components/UserSidebar/UserLayout.jsx): layout · User-facing layout and sidebar/navigation surface. · `frontend_V01/src/components/UserSidebar/UserLayout.jsx`
- [Admin Shell](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/components/DashboardSidebar/DashboardSidebar.jsx): layout · Admin dashboard layout and navigation shell. · `frontend_V01/src/components/DashboardSidebar/DashboardSidebar.jsx`
- [Content Pages](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/pages/Home/Home.jsx): pages · Auth, catalog, borrowing, calendar, and settings pages. · `frontend_V01/src/pages/Home/Home.jsx`
- [Admin Pages](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/pages/Dashboad/Dashboad.jsx): pages · Dashboard, book/category management, feature, history, and admin settings pages. · `frontend_V01/src/pages/Dashboad/Dashboad.jsx`
- [UI Components](https://github.com/jamil-bs23/project_lms/blob/main/frontend_V01/src/components/BookCard/BookCard.jsx): shared components · Reusable cards, sliders, headers, footers, pagination, forms, and uploads. · `frontend_V01/src/components/BookCard/BookCard.jsx`

### Backend API

FastAPI entry points and feature routers.

- [Auth API](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/auth.py): router · Login, register, and authentication endpoints. · `backend/app/api/auth.py`
- [Books API](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/books.py): router · Browse and book metadata endpoints. · `backend/app/api/books.py`
- [Borrow API](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/borrow.py): router · Borrow, return, and loan-history endpoints. · `backend/app/api/borrow.py`
- [Admin API](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/admin.py): router · Admin-only operational endpoints. · `backend/app/api/admin.py`
- [Uploads API](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/api/uploads.py): router · File upload and media handling endpoints. · `backend/app/api/uploads.py`

### Backend Core

Auth, persistence, schemas, and domain logic.

- [Core Services](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/main.py): backend core · Application wiring, dependencies, and error handling. · `backend/app/main.py`
- [JWT/RBAC](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/core/security.py): security · Token auth and role-based access control. · `backend/app/core/security.py`
- [CRUD Layer](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/crud/book.py): service/data access · Domain persistence and business-data operations. · `backend/app/crud/book.py`
- [Schemas](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/schemas/book.py): contracts · FastAPI request/response models. · `backend/app/schemas/book.py`
- [ORM Models](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/models/book.py): database models · SQLAlchemy entities for users, books, borrows, reviews, ratings, donations, and settings. · `backend/app/models/book.py`

### Storage & Runtime

Database, object storage, and deployment boundaries.

- [Migrations](https://github.com/jamil-bs23/project_lms/blob/main/backend/alembic/env.py): schema evolution · Alembic history for database changes. · `backend/alembic/env.py`
- **PostgreSQL**: relational database · System of record for application metadata and transactions.
- [Object Storage](https://github.com/jamil-bs23/project_lms/blob/main/backend/app/utils/minio_utils.py): binary storage · MinIO-backed storage for uploaded PDFs, audio, and assets. · `backend/app/utils/minio_utils.py`
- [Deployment](https://github.com/jamil-bs23/project_lms/blob/main/docker-compose.yml): runtime · Containerized frontend/backend deployment and local composition. · `docker-compose.yml`

## Connections

- React SPA → Auth State: uses · SPA reads auth and user state from context.
- React SPA → Route Guard: protects · Routes are gated by authentication and role checks.
- React SPA → API Client: calls · UI interacts with backend through the HTTP client.
- React SPA → User Shell: renders · User journeys use the user layout shell.
- React SPA → Admin Shell: renders · Admin journeys use the admin layout shell.
- Content Pages → UI Components: composes · Pages assemble shared presentational components.
- Admin Pages → UI Components: composes · Admin views reuse common UI building blocks.
- API Client → Auth API: requests · Client auth flows hit the auth API.
- API Client → Books API: requests · Catalog and detail views fetch book data.
- API Client → Borrow API: requests · Borrowing and history views hit loan endpoints.
- API Client → Admin API: requests · Admin console actions call admin endpoints.
- API Client → Uploads API: requests · Upload flows send files to the uploads API.
- Auth API → JWT/RBAC: uses · Authentication is enforced through JWT/RBAC logic.
- Admin API → JWT/RBAC: uses · Admin endpoints are role-protected.
- Borrow API → CRUD Layer: delegates · Loan operations are implemented in CRUD/services.
- Books API → CRUD Layer: delegates · Book operations flow through the data layer.
- Admin API → CRUD Layer: delegates · Admin management actions reuse domain CRUD logic.
- CRUD Layer → ORM Models: maps to · CRUD logic operates on ORM entities.
- Schemas → ORM Models: serializes · Schemas mirror domain entities for validation and output.
- ORM Models → PostgreSQL: persists · ORM entities are stored in PostgreSQL.
- Migrations → PostgreSQL: evolves · Alembic migrations manage the database schema.
- Uploads API → Object Storage: stores · Uploads are written to object storage.
- Core Services → JWT/RBAC: configures · Application wiring includes auth and dependency boundaries.
- Core Services → CRUD Layer: orchestrates · Request handling connects routers to business logic.
- Deployment → React SPA: serves · Frontend is built and served as a production artifact.
- Deployment → Core Services: runs · Backend executes as a deployed service.