#!/bin/bash
# Boots the built image in a window, to try it as a team would. Changes made
# in this window are discarded when it closes (snapshot mode).
#
#   ./run_vm.sh                      # build/acpc2026.qcow2
#   ./run_vm.sh path/to/image.img    # another image
#   DISPLAY_OPT="-display none -vnc 127.0.0.1:7" ./run_vm.sh    # without a window
cd "$(dirname "$0")"
IMG=${1:-build/acpc2026.qcow2}
[ -f "$IMG" ] || { echo "Image not found: $IMG (run ./build.sh first)" >&2; exit 1; }
FORMAT=$(qemu-img info --output=json "$IMG" | python3 -I -c 'import json, sys; print(json.load(sys.stdin)["format"])')

for dir in /usr/share/edk2/x64 /usr/share/OVMF /usr/share/edk2/ovmf; do
    for code in OVMF_CODE.4m.fd OVMF_CODE_4M.fd OVMF_CODE.fd; do
        [ -f "$dir/$code" ] && { OVMF_CODE=$dir/$code; OVMF_VARS=$dir/${code/CODE/VARS}; break 2; }
    done
done
[ -n "${OVMF_CODE:-}" ] || { echo "UEFI firmware (OVMF) not found" >&2; exit 1; }
VARS=$(mktemp)
cp "$OVMF_VARS" "$VARS"
trap 'rm -f "$VARS"' EXIT

# shellcheck disable=SC2086
qemu-system-x86_64 -name acpc2026-try -machine q35,accel=kvm -cpu host -m 4096 -smp 4 \
    -drive if=pflash,format=raw,readonly=on,file="$OVMF_CODE" \
    -drive if=pflash,format=raw,file="$VARS" \
    -drive file="$IMG",format="$FORMAT",if=virtio,snapshot=on \
    -netdev user,id=net0 -device virtio-net-pci,netdev=net0 \
    -vga virtio ${DISPLAY_OPT:--display gtk} ${QEMU_EXTRA:-}