#!/bin/bash

# Dynamically determine the project directory
PROJECT_DIR=$(dirname "$(realpath "$0")")

echo "Setting up the project in $PROJECT_DIR..."

# Step 1: Create a virtual environment
if [ ! -d "$PROJECT_DIR/venv" ]; then
    echo "Creating a virtual environment..."
    python3 -m venv "$PROJECT_DIR/venv"
else
    echo "Virtual environment already exists."
fi

# Step 2: Activate the virtual environment
echo "Activating the virtual environment..."
source "$PROJECT_DIR/venv/bin/activate"

# Step 3: Install dependencies
echo "Installing dependencies..."
pip install --upgrade pip
pip install -r "$PROJECT_DIR/requirements.txt"

# Ensure Gunicorn is installed
if ! "$PROJECT_DIR/venv/bin/gunicorn" --version &>/dev/null; then
    echo "Installing Gunicorn..."
    pip install gunicorn
else
    echo "Gunicorn is already installed."
fi


# Step 4: Create a systemd service
SERVICE_FILE="/etc/systemd/system/gogmilestone.service"
if [ ! -f "$SERVICE_FILE" ]; then
    echo "Creating systemd service..."
    sudo bash -c "cat > $SERVICE_FILE" <<EOL
[Unit]
Description=Gunicorn instance to serve gogmilestone
After=network.target

[Service]
User=$USER
Group=www-data
WorkingDirectory=$PROJECT_DIR
Environment="PATH=$PROJECT_DIR/venv/bin"
ExecStart=$PROJECT_DIR/venv/bin/gunicorn -w 4 -b 0.0.0.0:4001 gogmilestone2:app

[Install]
WantedBy=multi-user.target
EOL

    echo "Reloading systemd daemon..."
    sudo systemctl daemon-reload

    echo "Enabling gogmilestone service..."
    sudo systemctl enable gogmilestone

    echo "Starting gogmilestone service..."
    sudo systemctl start gogmilestone

    echo "Service created and started successfully."
else
    echo "Service already exists. Skipping service creation."
fi

echo "Setup complete. You can now access the application. Visit http://localhost:4001 to see it in action. use systemctl [start/stop] gogmilestone.service to start/stop the service."