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#compdef vmctl

local context line state state_descr
local -a subcommands vmctl_status
local -A opt_args

_vm_name() {
  compadd "$@" - ${${${(@f)"$(_call_program vmctl_status vmctl status)"}[2,-1]}##* }
}

_vm_switch() {
  [[ -r /etc/vm.conf ]] &&
  compadd "$@" - ${${${(M)${(f)"$(</etc/vm.conf)"}:#switch *}##switch ##\"#}%%\"# *}
}

subcommands=(
  console:'connect to the console of the VM'
  create:'create a VM disk image'
  load:'load additional configuration'
  log:'change logging verbosity'
  pause:'pause a VM'
  receive:'receive a VM from stdin'
  reload:'remove stopped VMs and reload config'
  reset:'reset specified component'
  send:'send VM to stdout and terminate it'
  {show,status}:'list VMs running or just the specified id'
  start:'start a VM'
  stop:'stop a VM'
  unpause:'unpause a VM'
)

if (( CURRENT == 2 )); then
  _describe subcommand subcommands
else
  shift words; (( CURRENT-- ))
  case $words[1] in
    console|pause|send|show|status|stop|unpause)
      _arguments ':id:_vm_name'
      ;;
    create)
      _arguments \
        ':path:_files' \
        ': :(-s)' \
        ':disk size in megabytes: '
      ;;
    load)
      _arguments ':configuration file:_files'
      ;;
    log)
      _arguments ':logging verbosity:(brief verbose)'
      ;;
    receive)
      _arguments ':name: '
      ;;
    reset)
      _arguments ':reset option:((
        all\:"reset the running state"
        switches\:"reset the configured switches"
        vms\:"reset and terminate all VMs"
      ))'
      ;;
    start)
      if (( CURRENT == 2 )); then
        _vm_name
      else
        shift words; (( CURRENT-- ))
        _arguments -s \
          '-b+[boot with the specified kernel or BIOS image]:boot image:_files' \
          '-c[automatically connect to the VM console]' \
          '*-d+[disk image file]:disk image:_files' \
          '-i+[number of network interfaces]:number: ' \
          '-L[add a local network interface]' \
          '-m+[memory size in megabytes]:megabytes: ' \
          '-n+[specify switch to attach]:switch:_vm_switch' \
	  '-r+[ISO image file for virtual CD-ROM]:ISO image:_files'
      fi
      ;;
  esac
fi