🩸 Blood Donation Support System – Backend

This repository contains the backend of the Blood Donation Support System, a web-based platform designed to manage and support blood donation activities at a healthcare facility.

⚠️ Note: The frontend (built with React + Vite) is located in a separate repository and is not included here.

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📌 Overview

The backend exposes RESTful APIs that support:

• Blood donation registration & appointment scheduling
• Blood type/component matching & emergency donation support
• Blood inventory tracking
• Email notification system
• Role-based access (Guest, Member, Staff, Admin)
• JWT-based authentication and authorization

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👥 User Roles

• Guest – View public information, register as donor
• Member – Manage own profile, donation history, and availability
• Staff – Handle appointment requests, manage inventory
• Admin – Access system reports, analytics, and manage users

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🛠 Tech Stack

Layer	Technology
Language	TypeScript
Runtime	Node.js
Framework	Express.js
Database	SQL Server
Authentication	JSON Web Token (JWT)
Email Service	Nodemailer
Environment Vars	dotenv

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📁 Project Structure

src/
├── constant/       # App-wide constants
├── controller/     # Route handlers
├── middleware/     # Middleware functions
├── models/         # Request/response schemas, database models
├── repository/     # DB interaction logic
├── routers/        # Express route definitions
├── services/       # Business logic
├── utils/          # Helper utilities
└── index.ts        # App entry point

🛠 Environment Variables (.env)

Create a .env file in the root directory with the following variables:

## 🛠 Environment Variables (.env)

Create a `.env` file in the root directory with the following variables:

```env
# Database Configuration
DB_USERNAME=your_db_username
DB_PASSWORD=your_db_password
DB_NAME=BloodDonationSupportSystem
DB_SERVER=localhost
DB_PORT=1433

# JWT Secrets
JWT_SECRET=your_base_jwt_secret
JWT_SECRET_ACCESS_TOKEN=your_access_token_secret
JWT_SECRET_REFRESH_TOKEN=your_refresh_token_secret
JWT_SECRET_EMAIL_VERIFY_TOKEN=your_email_verify_secret
JWT_SECRET_FORGOT_PASSWORD_TOKEN=your_forgot_password_secret

# Token Expiration Settings
ACCESS_TOKEN_EXPIRE_IN=15m
REFRESH_TOKEN_EXPIRE_IN=100d
EMAIL_VERIFY_TOKEN_EXPIRE_IN=7d
FORGOT_PASSWORD_TOKEN_EXPIRE_IN=7d

# Email Configuration (for Nodemailer)
EMAIL_USERNAME=your_email@example.com
EMAIL_PASSWORD=your_email_app_password

🚀 Getting Started
1. Clone the repository
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git clone https://github.com/june4m/BloodDonationSupportSystemBE.git
cd BloodDonationSupportSystemBE
2. Install dependencies
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npm install
3. Start the server (in development mode)
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npm run dev