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# -*-eselect-*-  vim: ft=eselect
# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

inherit config

DESCRIPTION="Manage the system default wxWidgets profile"
MAINTAINER="wxwidgets@gentoo.org"
VERSION="20140423"

WXCONFFILE="${EROOT}"/var/lib/wxwidgets/current
WXCONFDIR="${EROOT}"/usr/lib/wx/config

find_targets() {
	local conf
	for conf in ${WXCONFDIR}/*; do
		[[ -e ${conf} ]] && basename ${conf}
	done
}

set_config() {
	local target="${1}" targets

	if is_number "${target}"; then
		targets=( $(find_targets) )
		[[ ${1} -ge 1 && ${1} -le ${#targets[@]} ]] \
			|| die -q "Number out of range: ${1}"
		target=${targets[$(( ${target} - 1 ))]}
	fi
	# we shouldn't change the profile to "none" if there are available configs
	# this can happen if WXCONFFILE got deleted somehow
	if [[ ${target} == "none" ]]; then
		targets=( $(find_targets) )
		[[ ${#targets[@]} -ge 1 ]] && target=${targets[0]}
	fi

	if [[ ! ${target} == "none" && ! -e ${WXCONFDIR}/${target} ]]; then
		die -q "\"${1}\" doesn't appear to be a valid profile name"
	fi

	echo
	echo "Setting wxWidgets profile to ${target}"
	echo
	store_config ${WXCONFFILE} WXCONFIG ${target}

	if [[ ! ${target} == "none" ]]; then
		# expose the slot number of the selected target for various uses
		local wxslot=${target##*-}
	fi

	# symlink bakefile presets to current slot (Bug #209150)
	local f
	pushd "${EROOT}"/usr/share/bakefile/presets/ &> /dev/null
	for f in .bkl _presets.py _unix.bkl _win32.bkl _xrc.bkl; do
		if [[ -e wx${f} || -L wx${f} ]]; then
			rm -f wx${f} || die -q "Error removing wx${f}"
		fi
		if [[ ! ${target} == "none" ]]; then
			if [[ -e wx${wxslot/./}${f} ]]; then
				ln -sf wx${wxslot/./}${f} wx${f} \
					|| die -q "Error symlinking wx${wxslot/./}${f}"
			fi
		fi
	done
	popd &> /dev/null
}

### show action ###

describe_show() {
	echo "Show the currently selected profile"
}

do_show() {
	[[ ${#@} -gt 0 ]] && die -q "Too many parameters"

	write_list_start "Current wxWidgets profile:"
	if [[ -e ${WXCONFFILE} ]]; then
		write_kv_list_entry "$(load_config ${WXCONFFILE} WXCONFIG)" ""
	else
		write_kv_list_entry "(none)" ""
	fi
}

### list action ###

describe_list() {
	echo "List available profiles"
}

do_list() {
	local i targets currconf
	targets=( $(find_targets) )
	[[ -e ${WXCONFFILE} ]] && currconf=$(load_config ${WXCONFFILE} WXCONFIG)

	for (( i = 0; i < ${#targets[@]}; i++ )); do
		# highlight current version
		[[ ${targets[i]} = ${currconf} ]] \
			&& targets[i]=$(highlight_marker "${targets[i]}")
	done
	write_list_start "Available wxWidgets profiles:"
	write_numbered_list -m "(none found)" "${targets[@]}"
}

### set action ###

describe_set() {
	echo "Set the system wxWidgets profile"
}

describe_set_options() {
	echo "<target> : Profile name or number (from 'list')"
}

describe_set_parameters() {
	echo "<target>"
}

do_set() {
	[[ ! ${#@} -eq 1 ]] \
		&& die -q "You must specify a profile name or number"

	[[ ! -w "${EROOT}"/var/lib/ ]] \
		&& die -q "You need write permission to /var/lib to perform this action."

	set_config "${1}"
}

describe_update() {
	echo "Check current profile and update it if invalid (internal use only)"
}

do_update() {
	[[ ! -e ${WXCONFFILE} ]] && do_set none

	currconf=$(load_config ${WXCONFFILE} WXCONFIG)

	# if current config is valid leave it alone
	[[ -e ${WXCONFDIR}/${currconf} ]] && return 0

	# split the current config into components
	OIFS=${IFS}
	IFS=-
	set -- ${currconf}
	IFS=${OIFS}

	declare -a wxtoolkit wxchar wxdebug wxver

	# put them into the first element of the arrays
	wxtoolkit=(${1})
	wxchar=(${2})
	if [[ $# -eq 3 ]]; then
		# >=2.9 doesn't have a debug component, so fake it
		wxdebug=(release)
		wxver=(${3})
	else
		wxdebug=(${3})
		wxver=(${4})
	fi

	# now put all possible components into the next elements
	local component toolkit char debug ver i opt

	for component in toolkit char debug ver; do
		i=1
		case ${component} in
			toolkit)
				for opt in base gtk2 mac; do
					if [[ ${opt} == ${wxtoolkit[0]} ]]; then
						continue
					else
						wxtoolkit[${i}]=${opt}
						(( i++ ))
					fi
				done
				;;

			char)
				for opt in ansi unicode; do
					if [[ ${opt} == ${wxchar[0]} ]]; then
						continue
					else
						wxchar[${i}]=${opt}
						(( i++ ))
					fi
				done
				;;

			debug)
				for opt in release debug; do
					if [[ ${opt} == ${wxdebug[0]} ]]; then
						continue
					else
						wxdebug[${i}]=${opt}
						(( i++ ))
					fi
				done
				;;

			ver)
				for opt in 3.0 2.9 2.8; do
					if [[ ${opt} == ${wxver[0]} ]]; then
						continue
					else
						wxver[${i}]=${opt}
						(( i++ ))
					fi
				done
				;;
		esac
	done

	# Now we iterate through all the installed configs and find the closest match
	# ( debug -> char -> toolkit -> ver )
	# meaning w/ a current config of gtk2-unicode-debug-2.8, it will pick
	# gtk2-unicode-release-2.8 before
	# base-unicode-debug-2.8 before
	# gtk2-unicode-2.9

	local d c t v checkconf foundconf

	for (( v = 0 ; v < ${#wxver[@]} ; v++ )); do
		for (( t = 0 ; t < ${#wxtoolkit[@]} ; t++ )); do
			for (( c = 0 ; c < ${#wxchar[@]} ; c++ )); do
				for (( d = 0 ; d < ${#wxdebug[@]} ; d++ )); do
					if [[ ${wxver[$v]} != 2.8 ]]; then
						# >=2.9 doesn't have a debug component
						checkconf="${wxtoolkit[$t]}-${wxchar[$c]}-${wxver[$v]}"
					else
						checkconf="${wxtoolkit[$t]}-${wxchar[$c]}-${wxdebug[$d]}-${wxver[$v]}"
					fi
					[[ -e ${WXCONFDIR}/${checkconf} ]] || continue
					foundconf=${checkconf}
					break 4
				done
			done
		done
	done

	# nothing installed
	[[ -z ${foundconf} ]] && foundconf="none"

	if [[ ${currconf} != "none" && ${foundconf} != "none" ]]; then
		echo
		write_warning_msg "Your currently selected wxWidgets profile:    ( ${currconf} )"
		write_warning_msg "is no longer available."
		write_warning_msg
		write_warning_msg "The closest matching profile:                 ( ${foundconf} )"
		write_warning_msg "will be activated in its place."
	fi

	do_set ${foundconf}
}