#! /bin/bash
#
# virt-install <= virtinst
# quemu-img



harmony-ve-dependencies()(

  set -eu

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

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

    cat <<-EOM
  
  NAME

    harmony-ve-dependencies 

  DESCRIPTION

    Manage localhost dependencies needed for Harmony Virtual Execution Environment

  SYNOPSYS

    devops-dependencies [GLOBAL_OPTIONS] COMMAND [OPTIONS]

    devops check     # Check that dependencies are installed
    devops install   # Install missing dependencies

EOM

  }

  _extra_help(){

    cat <<-EOM

  GLOBAL_OPTIONS

    -d     Debug mode.

  WARNINGS

    This script is experimetal. Use with caution.
EOM

  }


  _check_dependencies(){
      . "${SCRIPTS_DIR}/dependencies-management"
      missing=0
      NEED_IP=false
      NEED_KVM=false
      NEED_VIRT_CUSTOMIZE=false
      NEED_WGET=false
      is_debian_family || _fatal only debian based version is supported
      has_ip || { 
	missing=$(( missing + 1)); 
	_warn "ip command is missing";
        NEED_IP=true
      }
      has_virsh ||{
	missing=$(( missing + 1)); 
	_warn "virsh command is missing";
        NEED_KVM=true
      } 
      has_virt_customize || {
	missing=$(( missing + 1)); 
	_warn "virt-customize command is missing";
        NEED_VIRT_CUSTOMIZE=true
      }
      has_wget || has_curl || {
	missing=$(( missing + 1)); 
	_warn "wget and curl commands are missing"; NEED_WGET=true

      }

  }

  _install_dependencies(){

    [ "$NEED_KVM" != "true" ] || install_kvm 
    [ "$NEED_VIRT_CUSTOMIZE" != "true" ] || install_virt_customize 
    [ "$NEED_WGET" != "true" ] || install_wget
  }


case "${1:-}" in

  "")
	_short_help
	;;
  -h|--help)
	_short_help
	_extra_help
	;;
   cdeps|check-dependencies)
	   _check_dependencies
           if [ "$missing" -gt 0 ]; then 
	      exit 1
           fi
	   _warn No missing dependencies
	   ;;
   ideps|install-dependencies)
	   _check_dependencies
	   _install_dependencies
	   ;;
   *)
        _warn "Unknown COMMAND '$1'"
	exit 1
	;;
esac 

)


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