#!/bin/bash
# Version 08
# Setup script for new game deployment (dirs only, port check)

set -e

if [ -z "$1" ]; then
  echo "Usage: $0 <spielname> [additional pip packages]"
  exit 1
fi

GAMENAME="$1"
DIR="/var/www/$GAMENAME"
DOMAIN="$GAMENAME.orangeicebear.at"

# Find a free port between 8000–8999 that is not currently in use
for i in {8000..8999}; do
  if ! lsof -iTCP:$i -sTCP:LISTEN -Pn >/dev/null 2>&1; then
    PORT=$i
    break
  fi
done

if [ -z "$PORT" ]; then
  echo "[ERROR] No free port found in range 8000–8999"
  exit 2
fi

echo "Using free port $PORT"
echo

echo "Creating project folder at $DIR"
install -d -m 0750 -o games -g games "$DIR/static"
echo

cd "$DIR"
python3 -m venv venv
source venv/bin/activate

echo "[INFO] Erstelle requirements.txt"
echo -e "fastapi\nuvicorn\n${*:2}" | tr ' ' '\n' > requirements.txt

pip install -r requirements.txt

if pip list | grep -q jinja2; then
  install -d -m 0750 -o games -g games "$DIR/templates"
  echo "[INFO] $DIR/templates created"
else
  echo "[INFO] Kein Jinja2 installiert – templates/ wird nicht erstellt"
fi

echo

echo "Creating systemd service"
echo "cat > /etc/systemd/system/$GAMENAME.service <<EOF"
cat > "/etc/systemd/system/$GAMENAME.service" <<EOF
[Unit]
Description=$GAMENAME Game Server
After=network.target

[Service]
ExecStart=$DIR/venv/bin/uvicorn main:app --host 0.0.0.0 --port $PORT
WorkingDirectory=$DIR
Restart=always
User=games
Group=games
Environment=PYTHONUNBUFFERED=1

[Install]
WantedBy=multi-user.target
EOF

echo
systemctl daemon-reexec
systemctl daemon-reload
systemctl enable --now "$GAMENAME"
systemctl status "$GAMENAME"
echo

echo "Creating nginx config"
echo "cat > /etc/nginx/sites-available/$DOMAIN <<EOF"
echo "server {"
echo "    listen 80;"
echo "    server_name $DOMAIN;"
echo ""
echo "    access_log /var/log/nginx/games_access.log;"
echo "    error_log  /var/log/nginx/games.error.log;"
echo ""
echo "    location / {"
echo "        proxy_pass http://10.0.3.32:$PORT ;"
echo "        include proxy_params;"
echo "        proxy_redirect off;"
echo "    }"
echo "}"
echo "EOF"
echo

echo "ln -s /etc/nginx/sites-available/$DOMAIN /etc/nginx/sites-enabled/"
echo "nginx -t && systemctl reload nginx"
echo

echo "[DEBUG] Port: $PORT"
echo "[INFO] Spiel $GAMENAME vorbereitet unter http://$DOMAIN → Port $PORT im Container"
echo "[INFO] Nginx-Logs: /var/log/nginx/games.access.log & games.error.log"
echo "[INFO] Verzeichnisstruktur angelegt. Bitte Quellcode und statische Dateien manuell hinzufügen."