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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 pull 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)
}

function _pkg_args {
	if (( CURRENT == 2 )) {
		case ${words[1]} in
			changelog|check|delete|log|pull|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[1]} = 'eval' ]] {
		_message 'shell code for evaluation'
		if (( CURRENT == 3 )) {
			case ${words[2]} in
				exec_hook|check_prereqs|*_collected|)
					_pkg_installed
				;;
			esac
		} elif (( CURRENT == 4 )) {
			case ${words[2]} in
				exec_hook)
					_wanted hook expl 'package hook' \
					compadd $(ls -1 ~/packages/${words[3]}/hooks 2> /dev/null)
				;;
			esac
		}
	}
}

_arguments \
	{-q,--quiet}'[quiet mode]' \
	{-d,--debug}'[debugmode]' \
	{-au,--auto-update}'[automatically update package list]' \
	'*'{-co,--checklinks-options}'[options for checklinks]:option' \
	{-p,--packagedir}'[package directory]:directory:_files -/' \
	':action:_pkg_action' \
	'*::arguments:_pkg_args'