#!/usr/bin/env bash
set -euo pipefail

# UltraCloud VM Cluster - Node 03 (ISO Boot)
# Boots from NixOS ISO for provisioning via nixos-anywhere

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DISK="${SCRIPT_DIR}/node03.qcow2"
ISO="${SCRIPT_DIR}/isos/latest-nixos-minimal-x86_64-linux.iso"
MAC_MCAST="52:54:00:12:34:03"
MAC_SLIRP="52:54:00:aa:bb:03"
MCAST_ADDR="230.0.0.1:1234"
SSH_PORT=2203
VNC_DISPLAY=":3"
SERIAL_LOG="${SCRIPT_DIR}/node03-serial.log"

if [ ! -f "$ISO" ]; then
    echo "ERROR: ISO not found at $ISO"
    exit 1
fi

echo "Launching node03 with ISO boot..."
echo "  Disk: ${DISK}"
echo "  ISO: ${ISO}"
echo "  eth0 (multicast): ${MAC_MCAST} @ ${MCAST_ADDR}"
echo "  eth1 (SLIRP): ${MAC_SLIRP}, SSH on host:${SSH_PORT}"
echo "  VNC: ${VNC_DISPLAY} (port 5903)"
echo "  Serial log: ${SERIAL_LOG}"

exec qemu-system-x86_64 \
  -name node03 \
  -machine type=q35,accel=kvm \
  -cpu host \
  -smp 8 \
  -m 16G \
  -drive file="${DISK}",if=virtio,format=qcow2 \
  -cdrom "${ISO}" \
  -boot d \
  -netdev socket,mcast="${MCAST_ADDR}",id=mcast0 \
  -device virtio-net-pci,netdev=mcast0,mac="${MAC_MCAST}" \
  -netdev user,id=user0,hostfwd=tcp::${SSH_PORT}-:22 \
  -device virtio-net-pci,netdev=user0,mac="${MAC_SLIRP}" \
  -vnc "${VNC_DISPLAY}" \
  -serial "file:${SERIAL_LOG}" \
  -daemonize
