#!/bin/bash
# StatSphere - Ubuntu 24.04 LXC Install Script
# Run as root or with sudo

set -e

APP_DIR="/opt/statsphere"
APP_USER="statsphere"
NODE_VERSION="20"

echo "============================================"
echo "  StatSphere Athlete Stats Platform Installer"
echo "============================================"

# 1. System update
echo "[1/8] Updating system packages..."
apt-get update -qq
apt-get install -y -qq curl git nginx

# 2. Install Node.js 20 LTS via NodeSource
echo "[2/8] Installing Node.js ${NODE_VERSION}..."
curl -fsSL https://deb.nodesource.com/setup_${NODE_VERSION}.x | bash -
apt-get install -y -qq nodejs
echo "  Node: $(node --version)"
echo "  NPM:  $(npm --version)"

# 3. Create app user
echo "[3/8] Creating app user..."
id -u $APP_USER &>/dev/null || useradd -r -s /bin/false -d $APP_DIR $APP_USER

# 4. Copy app files
echo "[4/8] Setting up application directory..."
mkdir -p $APP_DIR
cp -r . $APP_DIR/
chown -R $APP_USER:$APP_USER $APP_DIR

# 5. Install dependencies and build
echo "[5/8] Installing Node dependencies (this may take 2-3 minutes)..."
cd $APP_DIR
sudo -u $APP_USER npm install

echo "[6/8] Building production bundle..."
sudo -u $APP_USER npm run build

# 6. Configure Nginx
echo "[7/8] Configuring Nginx..."
cat > /etc/nginx/sites-available/statsphere <<'NGINX'
server {
    listen 80;
    listen [::]:80;
    server_name _;

    root /opt/statsphere/dist;
    index index.html;

    # Gzip
    gzip on;
    gzip_vary on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml image/svg+xml;

    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff2|woff)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # Service worker - no cache
    location = /sw.js {
        add_header Cache-Control "no-cache";
    }

    # SPA fallback - all routes serve index.html
    location / {
        try_files $uri $uri/ /index.html;
    }
}
NGINX

# Enable site
ln -sf /etc/nginx/sites-available/statsphere /etc/nginx/sites-enabled/
rm -f /etc/nginx/sites-enabled/default
nginx -t
systemctl restart nginx
systemctl enable nginx

# 7. Setup systemd service for dev server (optional)
echo "[8/8] Setting up systemd service (dev preview mode)..."
cat > /etc/systemd/system/statsphere-dev.service <<'SERVICE'
[Unit]
Description=StatSphere Development Server
After=network.target

[Service]
Type=simple
User=statsphere
WorkingDirectory=/opt/statsphere
ExecStart=/usr/bin/npm run preview
Restart=on-failure
RestartSec=5
Environment=NODE_ENV=production

[Install]
WantedBy=multi-user.target
SERVICE

systemctl daemon-reload

echo ""
echo "============================================"
echo "  Installation Complete!"
echo "============================================"
echo ""
echo "  Production (Nginx):  http://$(hostname -I | awk '{print $1}')"
echo ""
echo "  To rebuild after changes:"
echo "    cd $APP_DIR && npm run build"
echo ""
echo "  To update the app:"
echo "    cd $APP_DIR"
echo "    git pull  (if using git)"
echo "    npm install"
echo "    npm run build"
echo "    systemctl restart nginx"
echo ""
echo "  Dev server (optional, port 4173):"
echo "    systemctl start statsphere-dev"
echo "    systemctl enable statsphere-dev"
echo ""