#!/bin/bash
# Launch the live desktop ISO under QEMU for interactive testing.
# Uses 12 GB RAM so nix packages (~4 GB) can install into the tmpfs overlay.
#
# Usage:
#   bash tests/launch-live-qemu.sh                  # uses out/void-live-stable.iso
#   ISO=out/my.iso bash tests/launch-live-qemu.sh
#   RAM_MB=16384 bash tests/launch-live-qemu.sh     # override RAM

set -Eeuo pipefail

PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
OUT_DIR="$PROJECT_DIR/out"

ISO="${ISO:-$(ls -t "$OUT_DIR"/void-live-stable*.iso 2>/dev/null | head -1 || true)}"
[[ -r "$ISO" ]] || { echo "no ISO found — run 'make live' first"; exit 1; }

RAM_MB="${RAM_MB:-12288}"   # 12 GB: Cinnamon ~2.5GB + nix store ~4GB + headroom
SMP="${SMP:-4}"

OVMF_CODE="${OVMF_CODE:-}"
OVMF_VARS_TPL="${OVMF_VARS_TPL:-}"
for c in /usr/share/OVMF/OVMF_CODE.fd /usr/share/edk2-ovmf/x64/OVMF_CODE.fd \
         /usr/share/edk2/x64/OVMF_CODE.fd /usr/share/qemu/OVMF_CODE.fd; do
    [[ -z "$OVMF_CODE" && -r "$c" ]] && OVMF_CODE="$c"
done
for v in /usr/share/OVMF/OVMF_VARS.fd /usr/share/edk2-ovmf/x64/OVMF_VARS.fd \
         /usr/share/edk2/x64/OVMF_VARS.fd /usr/share/qemu/OVMF_VARS.fd; do
    [[ -z "$OVMF_VARS_TPL" && -r "$v" ]] && OVMF_VARS_TPL="$v"
done
[[ -r "$OVMF_CODE"     ]] || { echo "OVMF_CODE not found — install ovmf"; exit 1; }
[[ -r "$OVMF_VARS_TPL" ]] || { echo "OVMF_VARS not found — install ovmf"; exit 1; }

VARS="$OUT_DIR/OVMF_VARS.live.fd"
[[ -f "$VARS" ]] || cp "$OVMF_VARS_TPL" "$VARS"

mkdir -p "$OUT_DIR"

echo ">>> launching live ISO: $ISO"
echo "    RAM: ${RAM_MB} MB  CPUs: $SMP"
echo "    serial: $OUT_DIR/live-serial.sock"
echo "    monitor: $OUT_DIR/qemu-monitor.sock"

exec qemu-system-x86_64 \
    -name void-live-test \
    -machine q35,accel=kvm:tcg \
    -cpu max \
    -m "$RAM_MB" \
    -smp "$SMP" \
    -drive "if=pflash,format=raw,readonly=on,file=$OVMF_CODE" \
    -drive "if=pflash,format=raw,file=$VARS" \
    -cdrom "$ISO" \
    -boot order=d,menu=off \
    -netdev user,id=n0 \
    -device virtio-net-pci,netdev=n0 \
    -serial "unix:$OUT_DIR/live-serial.sock,server,nowait" \
    -monitor "unix:$OUT_DIR/qemu-monitor.sock,server,nowait" \
    -device virtio-vga \
    -display gtk,gl=off