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# Installation & Open Source

> Set up the Student Dropout web platform for your environment.

## Prerequisites

Before installing Luna, ensure you have the following installed:

* **Python 3.9+**
* **Docker** and **Docker Compose**
* **PostgreSQL** (for local development without Docker)
* **Git**

## Dependencies

### Core Packages

| Package               | Version | Purpose            |
| --------------------- | ------- | ------------------ |
| Django                | 4.2.5   | Web framework      |
| Django REST Framework | 3.14.0  | API development    |
| psycopg2-binary       | 2.9.7   | PostgreSQL adapter |
| django-cors-headers   | 4.2.0   | CORS handling      |
| python-decouple       | 3.8     | Environment config |
| django-cron           | -       | Scheduled tasks    |
| drf-yasg              | -       | API documentation  |
| numpy                 | -       | Data analysis      |

### Additional Dependencies

```
asgiref==3.7.2
pytz==2023.3.post1
sqlparse==0.4.4
typing-extensions==4.7.1
tzdata==2023.3
python-dotenv
```

## Installation Methods

### Method 1: Docker Installation (Recommended)

#### Step 1: Clone Repository

```bash  theme={null}
git clone https://github.com/Luna-DroMo/luna_backend
cd luna_backend
```

#### Step 2: Configure Environment Variables

Create a `.env` file in the project root:

```bash  theme={null}
# Database Configuration
PGHOST=db
PGNAME=postgres
PGUSER=your_username
PGPASSWORD=your_secure_password
PGPORT=5432

# Django Configuration
SECRET_KEY=your_django_secret_key
DEBUG=True
ALLOWED_HOSTS=localhost,127.0.0.1
```

#### Step 3: Build and Start Services

```bash  theme={null}
# Build and start all containers
docker-compose up --build

# Or run in detached mode
docker-compose up -d --build
```

This will start:

* **Web Application** (Port 80 → 8000)
* **PostgreSQL Database** (Port 5432)
* **pgAdmin** (Port 8001)

#### Step 4: Run Database Migrations

```bash  theme={null}
# Apply database migrations
docker-compose exec web python manage.py migrate

# Create migrations if models changed
docker-compose exec web python manage.py makemigrations
```

#### Step 5: Create Superuser

```bash  theme={null}
docker-compose exec web python manage.py createsuperuser
```

Follow prompts to enter:

* Email address
* First name
* Last name
* Password

#### Step 6: Initialize University Data

Access PostgreSQL and create initial university:

```bash  theme={null}
# Connect to database
docker-compose exec db psql -U postgres

# Create university
INSERT INTO core_university (id, name, created_at, updated_at)
VALUES (1, 'University of Tübingen', NOW(), NOW());
```

Or use external tools (DBeaver, pgAdmin) with:

* **Host**: localhost
* **Port**: 5432
* **Database**: postgres
* **Username**: (from .env PGUSER)
* **Password**: (from .env PGPASSWORD)

#### Step 7: Access Application

* **Main Application**: [http://localhost](http://localhost)
* **Admin Portal**: [http://localhost/admin](http://localhost/admin)
* **pgAdmin**: [http://localhost:8001](http://localhost:8001)
  * Email: [admin@pgadmin.org](mailto:admin@pgadmin.org)
  * Password: admin

### Method 2: Local Python Installation

#### Step 1: Clone and Setup Virtual Environment

```bash  theme={null}
git clone <repository-url>
cd luna_backend

# Create virtual environment
python3.9 -m venv venv

# Activate virtual environment
# On macOS/Linux:
source venv/bin/activate
# On Windows:
venv\Scripts\activate
```

#### Step 2: Install Dependencies

```bash  theme={null}
pip install -r requirements.txt
```

#### Step 3: Configure Environment

Create `.env` file:

```bash  theme={null}
# Database Configuration (Local PostgreSQL)
PGHOST=localhost
PGNAME=luna_db
PGUSER=your_username
PGPASSWORD=your_password
PGPORT=5432

# Django Configuration
SECRET_KEY=your_django_secret_key
DEBUG=True
ALLOWED_HOSTS=localhost,127.0.0.1
```

#### Step 4: Setup PostgreSQL Database

```bash  theme={null}
# Create database
createdb luna_db

# Or via psql
psql -U postgres
CREATE DATABASE luna_db;
```

#### Step 5: Run Migrations

```bash  theme={null}
cd luna
python manage.py migrate
python manage.py createsuperuser
```

#### Step 6: Start Development Server

```bash  theme={null}
python manage.py runserver
```

Access at: [http://localhost:8000](http://localhost:8000)

## Docker Service Management

### View Logs

```bash  theme={null}
# All services
docker-compose logs

# Specific service
docker-compose logs web
docker-compose logs db

# Follow logs
docker-compose logs -f web
```

### Container Access

```bash  theme={null}
# Access web container shell
docker-compose exec web bash

# Access database
docker-compose exec db psql -U postgres
```

### Restart Services

```bash  theme={null}
# Restart all
docker-compose restart

# Restart specific service
docker-compose restart web
docker-compose restart db
```

### Stop Services

```bash  theme={null}
# Stop all containers
docker-compose down

# Stop and remove volumes (careful!)
docker-compose down -v
```

## Database Setup Details

### Docker Compose Configuration

The `docker-compose.yml` defines three services:

```yaml  theme={null}
services:
  web: # Django application (Port 80→8000)
  db: # PostgreSQL database (Port 5432)
  pgadmin: # Database admin interface (Port 8001)
```

### Dockerfile Overview

The application uses Python 3.9 base image and:

1. Installs Python dependencies from `requirements.txt`
2. Installs system utilities (cron)
3. Copies application code
4. Sets up entrypoint script for initialization
5. Exposes port 8000

### Entrypoint Process

The `entrypoint.sh` script:

1. Waits for PostgreSQL to be ready
2. Runs database migrations
3. Starts cron for scheduled tasks
4. Starts Django development server
5. Executes django-cron jobs every 12 hours

## Verification Steps

### 1. Check Running Containers

```bash  theme={null}
docker-compose ps
```

Expected output:

```
NAME                COMMAND              STATUS         PORTS
luna_backend_web    /entrypoint.sh       Up            0.0.0.0:80->8000/tcp
luna_backend_db     postgres             Up            0.0.0.0:5432->5432/tcp
luna_backend_pgadmin pgadmin             Up            0.0.0.0:8001->8001/tcp
```

### 2. Verify Database Connection

```bash  theme={null}
docker-compose exec web python manage.py dbshell
```

### 3. Check Migrations

```bash  theme={null}
docker-compose exec web python manage.py showmigrations
```

### 4. Access Admin Panel

Navigate to [http://localhost/admin](http://localhost/admin) and login with superuser credentials.

## Troubleshooting

### Port Conflicts

If ports 80, 5432, or 8001 are in use, modify `docker-compose.yml`:

```yaml  theme={null}
ports:
  - "8080:8000" # Change web port
  - "5433:5432" # Change database port
```

### Database Connection Issues

1. Ensure PostgreSQL container is running:

   ```bash  theme={null}
   docker-compose ps db
   ```

2. Check environment variables in `.env`

3. Verify database logs:
   ```bash  theme={null}
   docker-compose logs db
   ```

### Migration Errors

```bash  theme={null}
# Reset migrations (development only!)
docker-compose exec web python manage.py migrate --fake-initial

# Or manually delete migration files and recreate
docker-compose exec web python manage.py makemigrations
docker-compose exec web python manage.py migrate
```

### Permission Issues

```bash  theme={null}
# Fix container permissions
docker-compose exec web chmod +x /entrypoint.sh
```

## Next Steps

After successful installation:

1. **Configure Modules** - Create university modules via admin panel
2. **Add Users** - Register students and lecturers
3. **Create Surveys** - Design forms for data collection
4. **Review Architecture** - See [Architecture Guide](./architecture.md)
5. **Understand Workflows** - See [Student Experience](./student-experience.md) and [Lecturer Experience](./lecturer-experience.md)

## Production Deployment

For production deployment on AWS EC2 with Nginx:

1. Use production-ready database (RDS or managed PostgreSQL)
2. Configure Nginx as reverse proxy
3. Set `DEBUG=False` in environment
4. Use proper SSL certificates
5. Configure allowed hosts
6. Set up database backups
7. Implement monitoring and logging

***

**Support**: For issues, consult project documentation or contact the development team.


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