#!/bin/bash

set -Eeuo pipefail

if [[ $# -ne 1 ]]; then
  echo "Usage: $0 <vm-name>"
  exit 1
fi

VM="${1}"
if [ -d "/var/lib/libvirt/images/${VM}/" ]; then
  echo "VM ${VM} already exists. Please remove it first."
  exit 1
fi

temp_dir=$(mktemp -d)
cleanup() {
  local exit_code=$?
  rm -rf "$temp_dir"
  if [ $exit_code -ne 0 ]; then
    echo "An error occurred. Cleaning up..."
    virsh destroy "${VM}" || true
    virsh undefine "${VM}" --nvram || true
    rm -rf "/var/lib/libvirt/images/${VM}/"
  fi
}
trap cleanup EXIT

# Create a temporary directory to hold the VM image and copy the base image there
install -m 0710 -o root -g qemu --context=system_u:object_r:virt_image_t:s0 -d "$temp_dir"
install -m 0710 -o root -g qemu -Z -d "/var/lib/libvirt/images/${VM}"

# Migrate the VM disk from Hyper-V to KVM
echo "Copying the VM disk from Hyper-V..."
rclone copy "$DOMAIN_HYPERV_DISK_LOCATION" "$temp_dir"
echo "Converting the VM disk to qcow2 format..."
qemu-img convert -O qcow2 "$temp_dir/$DOMAIN_HYPERV_DISK_NAME" "/var/lib/libvirt/images/${VM}/root.qcow2"
restorecon -F "/var/lib/libvirt/images/${VM}/root.qcow2"

# Create and start the VM using virt-install
echo "Creating and starting the VM ${VM}..."
virt-install --name "${VM}" \
             --autostart \
             --cpu=host-passthrough \
             --vcpus=${DOMAIN_VCPUS} \
             --ram=${DOMAIN_RAM} \
             --os-variant=${DOMAIN_OS_VARIANT} \
             --disk=path=/var/lib/libvirt/images/${VM}/root.qcow2,bus=sata,format=qcow2 \
             --disk=path=/usr/share/virtio-win/virtio-win.iso,device=cdrom,bus=sata \
             --boot uefi \
             --import \
             --network=network=default,mac=${DOMAIN_MAC_ADDRESS} \
             --noautoconsole

echo "VM ${VM} has been created and started."
exit 0