#!/bin/bash
# Exit immediately if a command exits with a non-zero status.
set -e

# --- Backend Setup ---
echo "Setting up backend..."
cd backend

# Create a virtual environment if it doesn't exist
if [ ! -d ".venv" ]; then
    echo "Creating virtual environment..."
    python3 -m venv .venv
fi

# Activate virtual environment and install dependencies
source .venv/bin/activate
pip install -r requirements.txt
deactivate

echo "Backend setup complete."
cd ..

# --- Frontend Setup ---
echo "Setting up frontend..."
cd frontend
npm install
echo "Frontend setup complete."
cd ..

# --- PM2 Execution ---
echo "Starting application with pm2..."

# Check if pm2 is installed
if ! command -v pm2 &> /dev/null
then
    echo "pm2 could not be found. Please install it with 'npm install -g pm2'"
    exit 1
fi

# Create a pm2 config file if it doesn't exist
if [ ! -f "pm2.config.js" ]; then
    echo "Creating pm2.config.js..."
    cat > pm2.config.js << EOL
module.exports = {
  apps : [{
    name: "frontend",
    cwd: "./frontend",
    script: "npm",
    args: "start",
    env: {
      "PORT": 3000
    }
  }, {
    name: "backend",
    cwd: "./backend",
    script: "./.venv/bin/uvicorn",
    args: "app.main:app --host 0.0.0.0 --port 8000",
    interpreter: "none",
    env: {
      "PYTHONPATH": "."
    }
  }]
};
EOL
fi

# Start processes with pm2
pm2 start pm2.config.js

echo "Application started with pm2."
echo "Use 'pm2 list' to see the status of the applications."
echo "Use 'pm2 logs' to see the logs."
echo "Use 'pm2 stop all' to stop the applications."