#autoload

_svcs_fmri() {
	local type="$argv[$#]"
	local fmri_abbrevs m i
	typeset -a -g _smf_fmris

	local update_policy
	zstyle -s ":completion:${curcontext}:" cache-policy update_policy
	if [[ -z "$update_policy" ]]; then
		zstyle ":completion:${curcontext}:" cache-policy _smf_caching_policy
	fi
	# The cache really must be per-host
	local cache_id=smf_fmri:$HOST

	# TODO: Do something useful with the expand and/or ambiguous styles.
	case $type in
	(-i|-c)
		# We probably also need an option to eliminate ambiguous
		# results for use in places where that's not allowed.

		# Grab all FMRIs that have a word beginning with $PREFIX,
		# making sure not to return the portion of the FMRI before
		# $PREFIX.  Use the cache if it exists and the user wants to.
		if ( [[ $#_smf_fmris -eq 0 ]] || _cache_invalid $cache_id ) \
			&& ! _retrieve_cache $cache_id; then
			_smf_fmris=( ${(f)"$(svcs -a -H -o fmri)"} )
			_store_cache $cache_id _smf_fmris
		fi
		# Each element of the array is removed which doesn't match
		# (^|.*/)$PREFIX.*
		fmri_abbrevs=( ${(M)_smf_fmris:#((#s)|*[/:])$PREFIX*} )

		# Go through the remaining elements and remove the characters
		# in front of $PREFIX.
		for ((i = 1; i <= $#fmri_abbrevs; i++ )); do
			# Either one of these will work, but they're too
			# greedy, preventing multiple matches below.
			fmri_abbrevs[i]=${${fmri_abbrevs[i]}/((#s)|*[\/:])(#b)($PREFIX*)/$match[1]}
			#fmri_abbrevs[i]=${${(M)${fmri_abbrevs[i]}:#(#b)((#s)|*/)$PREFIX*}#$match[1]}
		done

		# Remove the "default" instance identifier if it's the only
		# instance for a given service (not for svccfg).
		if [[ $type == "-i" ]]; then
			local -a svcs insts nabbrevs
			local s
			svcs=( ${(u)fmri_abbrevs%:*} )
			for s in $svcs; do
				insts=( ${(@M)fmri_abbrevs:#$s:*} )
				if [[ $#insts -eq 1 && $insts[1] == *":default" ]]; then
					nabbrevs=($nabbrevs ${insts//:default})
				elif [[ $#insts -eq 0 ]]; then
					# Turns out we're completing the
					# instance name.
					nabbrevs=($nabbrevs $s)
				else
					nabbrevs=($nabbrevs $insts)
				fi
			done
			fmri_abbrevs=( $nabbrevs )
		fi

		# After playing with _multi_parts, I'm not sure it's actually
		# that useful.
		# _wanted fmri expl "full or unambiguously abbreviated FMRIs" \
		# 	_multi_parts -i / fmri_abbrevs

		_wanted fmri expl "full or unambiguously abbreviated FMRIs" \
			compadd $fmri_abbrevs
		;;

	(-m)
		_wanted fmri expl "milestone FMRIs" \
			compadd $(svcs -H -o fmri svc:/milestone/\*) all
		;;

	(-r)
		# TODO: need some way to pick out only restarters
		_wanted fmri expl "restarter FMRIs" \
			compadd master reset svc:/network/inetd:default
		;;

	(*)
		_message "unknown argument to _svcs_fmri: $type"
		;;
	esac
}

_smf_caching_policy() {
	# /etc/svc/repository.db is not a public interface, so this is kinda
	# grody.
	[[ ! -f "$1" || /etc/svc/repository.db -nt "$1" ]]
}

_svcs_fmri "$@"
