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#compdef pkg
## vim:ft=zsh
## pkg completion
## Daniel Friesel <derf@derf.homelinux.org>
## https://derf.homelinux.org/~derf/dotfiles/zsh/completions/_pkg
## see also: https://derf.homelinux.org/~derf/code/lighty-stats

typeset expl

function _pkg_action () {
	_wanted action expl 'action' \
	compadd add install delete eval remove info list{,-all} \
	local-update log push remote-update refresh status update upgrade
}

function _pkg_installed () {
	_wanted package expl 'local package' \
	compadd $(pkg list)
}

function _pkg_all () {
	_wanted package expl 'package' \
	compadd $(pkg list-all)
}

function _pkg_notinstalled () {
	_wanted package expl 'remote package' \
	compadd $(diff <(pkg list) <(pkg list-all) | grep "^>" | cut -d " " -f 2)
}

if (( CURRENT == 2 )) {
	_pkg_action
} elif (( CURRENT == 3 )) {
	case ${words[2]} in
		changelog|check|delete|log|push|refresh|remove|status|upgrade)
			_pkg_installed
		;;
		info)
			_pkg_all 
		;;
		add|install)
			_pkg_notinstalled
		;;
		eval)
			_message 'shell code for evaluation'
			_wanted function expl 'internal function' \
			compadd $(grep -E '^\S*\s*\(\)\s*{' =pkg | cut -d ' ' -f 1) \
			        $(grep -E 'function \S* (\(\) )?{' =pkg | cut -d ' ' -f 2)
		;;
		*)
			_message 'no more arguments'
		;;
	esac
} elif [[ ${words[2]} = 'eval' ]] {
	_message 'shell code for evaluation'
	if (( CURRENT == 4 )) {
		case ${words[3]} in
			exec_hook|check_prereqs|*_collected|)
				_pkg_installed
			;;
		esac
	} elif (( CURRENT == 5 )) {
		case ${words[3]} in
			exec_hook)
				_wanted hook expl 'package hook' \
				compadd $(ls -1 ~/packages/${words[4]}/hooks 2> /dev/null)
			;;
		esac
	}
} else {
	_message 'no more arguments'
}