setup.sh

#!/bin/bash

# Location of the Python virtual environment.
VENV_DIR=".venv"

# Check if Python 3 is installed
if ! command -v python3 &> /dev/null; then
    echo "Error: Python 3 is not installed. Please install Python 3.9 or higher."
    exit 1
fi

# Create and set up the virtual environment if it does not already exist.
if [ ! -d "$VENV_DIR" ]; then
  echo "Creating virtual environment..."
  python3 -m venv "$VENV_DIR"
  
  if [ $? -ne 0 ]; then
    echo "Error: Failed to create virtual environment."
    exit 1
  fi
  
  source "$VENV_DIR/bin/activate"

  # Install dependencies if a requirements file is provided.
  if [ -f "requirements.txt" ]; then
    echo "Installing dependencies..."
    pip install --upgrade pip
    pip install -r requirements.txt
    
    if [ $? -ne 0 ]; then
      echo "Error: Failed to install dependencies."
      deactivate
      exit 1
    fi
    
    echo "Dependencies installed successfully."
  else
    echo "Warning: No requirements.txt found. Skipping dependency installation."
  fi
else
  # If the virtual environment already exists, just activate it.
  echo "Virtual environment already exists. Activating..."
  source "$VENV_DIR/bin/activate"
fi

echo "✓ Environment ready."