#!/usr/bin/env bash
# ==============================================================================
# SnarfNet Gaming PC Bootstrap Script
# MAC: bc:24:11:67:16:cd | IP: 140.44.44.80 (Compute / Game VLAN)
# ==============================================================================
set -euo pipefail

echo "======================================================="
echo "🌲 Bootstrapping SnarfNet Dedicated Game Server Host"
echo "======================================================="

# 1. System Updates & Essential Tools
echo ">>> Installing prerequisites and system tools..."
apt-get update && apt-get install -y \
    curl wget git jq ufw nfs-common ethtool net-tools \
    python3 python3-yaml python3-pip apt-transport-https \
    ca-certificates gnupg lsb-release

# 2. Configure Wake-on-LAN (Persistent via systemd)
echo ">>> Configuring Wake-on-LAN for primary interface..."
NIC=$(ip route show default | awk '{print $5}' | head -n1)
ethtool -s "$NIC" wol g || true

cat <<EOF > /etc/systemd/system/wol.service
[Unit]
Description=Enable Wake-on-LAN on $NIC
After=network.target

[Service]
Type=oneshot
ExecStart=/sbin/ethtool -s $NIC wol g

[Install]
WantedBy=basic.target
EOF
systemctl daemon-reload
systemctl enable wol.service

# 3. Mount Synology NAS Game Backup Share
echo ">>> Configuring Synology NAS NFS Mount (14.10.10.71:/volume1/docker/game-backups)..."
mkdir -p /mnt/nas/game-backups
if ! grep -qs '/mnt/nas/game-backups' /etc/fstab; then
    echo "14.10.10.71:/volume1/docker/game-backups /mnt/nas/game-backups nfs rw,hard,intr,nolock,timeo=14 0 0" >> /etc/fstab
fi
mount -a || true

# 4. Install Docker & Compose (if not present)
if ! command -v docker &> /dev/null; then
    echo ">>> Installing Docker Engine..."
    curl -fsSL https://get.docker.com | sh
    systemctl enable docker
    systemctl start docker
fi

# 5. Prepare Game Directory Structure
echo ">>> Creating game server storage paths..."
mkdir -p /opt/game-servers/{enshrouded,fs25,stationeers,valheim,vrising}/{savegame,saves,worlds,data}
chmod -R 775 /opt/game-servers

# 6. Setup Seed Manager Service & Daily Cron
echo ">>> Installing SnarfNet Seed Reconciler and Backup Timer..."
cat <<EOF > /etc/systemd/system/gameseed-backup.service
[Unit]
Description=SnarfNet Declarative Game Server Save Backup
After=network.target docker.service

[Service]
Type=oneshot
WorkingDirectory=/opt/snarfnet-game-seeds
ExecStart=/usr/bin/python3 /opt/snarfnet-game-seeds/core/manager.py backup

[Install]
WantedBy=multi-user.target
EOF

cat <<EOF > /etc/systemd/system/gameseed-backup.timer
[Unit]
Description=Nightly Game Save Backup Timer (04:00 AM)

[Timer]
OnCalendar=*-*-* 04:00:00
Persistent=true

[Install]
Timers.target
EOF

systemctl daemon-reload
systemctl enable gameseed-backup.timer
systemctl start gameseed-backup.timer

echo "======================================================="
echo "✓ Host bootstrap complete!"
echo "Run: python3 /opt/snarfnet-game-seeds/core/manager.py compose && docker compose up -d"
echo "======================================================="