#compdef acpiconf

local curcontext="$curcontext" sep ret=1
local -a state line modes desc
local -A opt_args

_arguments -s \
  '(-)-h[display usage information]' \
  '(-)-i[get battery information]:battery' \
  '(-)-k[ack or abort a pending suspend]:ack' \
  '(-)-s[enter specified sleep mode]: :->modes' && ret=0

if [[ -n $state ]]; then
  modes=( $(_call_program modes sysctl -n hw.acpi.supported_sleep_state) )
  zstyle -s ":completion:${curcontext}:modes" list-separator sep || sep=--
  (( $#modes )) || modes=( S3 S4 )
  desc=(
    "S1 $sep stop the processor clock"
    "S2 $sep low wake latency sleep state"
    "S3 $sep suspend to RAM"
    "S4 $sep suspend to disk"
    "S5 $sep soft off state"
  )
  desc=( ${(M)desc:#(${(~j.|.)modes}) *} )
  _wanted modes expl 'mode' compadd -M 'B:S=' -ld desc - ${modes#S} && ret=0
fi

return ret