#!/bin/bash -e

ISO="$1"
DISK="$HOME/${ISO%.*}.qcow2"
MAXMEM="$(free -g | awk '/^Mem:/{print $6 / 2}')G"
OVMF_CODE=/usr/share/edk2/x64/OVMF_CODE.4m.fd
OVMF_VARS=/tmp/OVMF_VARS.4m.fd

set -x
if [ -f "$OVMF_VARS" ]; then
    cp -f /usr/share/edk2/x64/OVMF_VARS.4m.fd "$OVMF_VARS"
fi
if ! [ -f "$DISK" ]; then
    qemu-img create -f qcow2 "$DISK" 20G
fi
qemu-system-x86_64 \
    -accel   kvm \
    -M       q35 \
    -monitor stdio \
    -cpu     host \
    -m       "2G,maxmem=$MAXMEM" \
    -vga     virtio \
    -audio   pipewire,model=hda \
    -nic     model=virtio-net-pci,type=user \
    -drive   "if=pflash,format=raw,file=$OVMF_CODE,readonly=on" \
    -drive   "if=pflash,format=raw,file=$OVMF_VARS" \
    -drive   "if=virtio,file=$DISK" \
    -drive   "file=$ISO,media=cdrom,readonly=on"