Accessible Campus Navigation System ♿📍

An end-to-end accessible route navigation web platform designed for university campuses. The system calculates optimal paths for mobility-impaired students using a Modified Dijkstra Algorithm that filters out non-accessible routes (e.g., stairs) in real time.

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🌟 Key Features

• Accessible Route Calculation: Custom pathfinding algorithm filtering paths based on accessibility attributes (is_accessible).
• Voice Assistance (NFR-01): Integrated Web Speech API for visual-impaired usability.
• Usability Focused: Built according to the 3-Click Rule for intuitive user navigation.
• Admin Management Panel: Interface for administrators to update node/edge accessibility statuses.
• Security & Testing: Full STRIDE Threat Modeling analysis (Rate-Limiting DoS mitigation) and 100% core test coverage via Jest.

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🛠️ Tech Stack & Architecture

• Frontend: React (Vite), Bootstrap 5, Web Speech API
• Backend: NestJS (TypeScript, Modular Architecture)
• Database: PostgreSQL via Supabase
• DevOps & Containerization: Docker (Node Alpine Image)
• Testing: Jest Unit Testing
• Architecture Models: C4 Context & Container Diagrams, UML Use Case, Sequence, and Class Diagrams

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🏗️ System Architecture

[ React Frontend ] ---> (REST API) ---> [ NestJS Backend ] ---> [ Supabase / Postgres ]
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                                    [ Dijkstra Engine ]
📂 Repository Structure
Plaintext
├── engelsiz-backend/      # NestJS REST API, Dijkstra Algorithm & Jest Tests
└── engelsiz-frontend/     # React web application UI

🚀 Getting Started with Docker
Prerequisites
Docker Desktop installed on your machine.

Running Backend via Docker
Clone the repository:

Bash
git clone [https://github.com/Arzuduzgun/accessible-campus-navigation.git](https://github.com/Arzuduzgun/accessible-campus-navigation.git)

Build and run the Docker container:

Bash
cd engelsiz-backend
docker build -t engelsiz-backend-image .
docker run -p 3000:3000 --env-file .env engelsiz-backend-image

Running Unit Tests
Bash
cd engelsiz-backend
npm test