#! /bin/bash

harmony-ve-opnsense-img()(

  set -eu

  [ "${1:-}" != "-d" ]  || { set -x ; shift ; }
  trap '[ "$?" = "0" ] || >&2 echo  ABNORMAL TERMINATION' EXIT

  SCRIPTS_DIR=$(readlink -f "$(dirname "${BASH_SOURCE}")")
  . "${SCRIPTS_DIR}/common"
  . "${SCRIPTS_DIR}/default-env-var"  

  export PATH=$SCRIPTS_DIR:$PATH

  _short_help(){

    cat <<-EOM
  
  NAME
  
    harmony-ve-opnsense-img

  DESCRIPTION

    Manage opnsense images needed by Harmony Virtual Execution Environment
  SYNOPSYS

    harmony-vee-opnsense-img [GLOBAL_OPTIONS] COMMAND [OPTIONS]

    harmony-ve-opnsense-img list
    harmony-ve-opnsense-img init NAME VERSION
    harmony-ve-opnsense-img start NAME
    harmony-ve-opnsense-img update NAME
    harmony-ve-opnsense-img delete [NAME]


EOM

  }

  _extra_help(){

    cat <<-EOM

  GLOBAL_OPTIONS

    -d     Debug mode.

  WARNINGS

    This script is experimetal. Use with caution.
EOM

  }


  # assertions

  _assert_image_do_not_exists(){
    name=$1
    [ ! -d "$_HVE_OPNSENSE_IMG/$name" ] || _fatal "An image '$name' already exists"
  }
  _assert_image_exists(){
    name=$1
    [ -d "$_HVE_OPNSENSE_IMG/$name" ] || _fatal "Image '$name' do not exists"
  }


  # Implement functions
  _init(){
    name=$1
    version=${2}

    _assert_image_do_not_exists $name
    mkdir -p "${_HVE_OPNSENSE_IMG}/$name"

    harmony-ve opnsense-img-src download $version

    sudo qemu-img convert -f raw -O qcow2 "$_HVE_OPNSENSE_SRC_IMG/OPNsense-${version}-nano-amd64.img" "/var/lib/libvirt/images/opnsense-$name.qcow2"




    cat <<-EOM > "$_HVE_OPNSENSE_IMG/$name/$name.sh"

  virt-install \
	--name $name \
	--os-variant freebsd14.0 \
	--vcpus=2,sockets=1,cores=2,threads=1 \
	--memory 4096 \
	--disk path="/var/lib/libvirt/images/opnsense-$name.qcow2" \
	--network bridge=${_HVE_WAN_BRIDGE},model=virtio \
	--network bridge=${_HVE_LAN_BRIDGE},model=virtio \
	--graphics none \
	--console pty,target_type=serial \
	--import \
	--autostart
EOM
    
  chmod +x "$_HVE_OPNSENSE_IMG/$name/$name.sh"

  }


  _start(){
    name=$1
    _assert_image_exists $name

    "$_HVE_OPNSENSE_IMG/$name/$name.sh"

  }

case "${1:-}" in

  "")
	_short_help
	;;
  -h|--help)
	_short_help
	_extra_help
	;;
   # Commands entrypoints
  init)
    _init "${@:2}"
    ;;
  start)
    _start "${@:2}"
     ;;
  delete)
    rm -r ${_HVE_OPNSENSE_IMG}/"$2"
    ;;
  ls|list)
    ls ${_HVE_OPNSENSE_IMG} | cat
    ;;
  show)
    ls ${_HVE_OPNSENSE_IMG}/"$2" | cat
    ;;
  *)
        _warn "Unknown COMMAND '$1'"
	exit 1
	;;
esac 

)


[ "$0" != "${BASH_SOURCE}" ] || harmony-ve-opnsense-img "${@}"