#!/bin/bash

INCLUDE_CONF_SH=conf.sh

LIBREUSER="${SUDO_USER:-$USER}"
LIBREHOME="$(eval echo ~$LIBREUSER)"
if [[ -z ${XDG_CONFIG_HOME:-} ]]; then
	export XDG_CONFIG_HOME="${LIBREHOME}/.config"
fi

# Generic functions ############################################################

get_files() {
	local slug=$1
	case $slug in
		makepkg.conf)
			if [[ $MAKEPKG_CONF != /etc/$slug && -r $MAKEPKG_CONF ]]; then
				echo "$MAKEPKG_CONF"
			else
				echo /etc/$slug
				echo "$LIBREHOME/.$slug"
			fi
			;;
		libretools.conf)
			echo /etc/$slug
			echo "$XDG_CONFIG_HOME/libretools/$slug"
			;;
		*.conf)
			echo /etc/libretools.d/$slug
			echo "$XDG_CONFIG_HOME/libretools/$slug"
			;;
	esac
}

load_files() {
	for file in $(get_files $1.conf); do
		if [[ -r $file ]]; then
			. "$file"
		fi
	done
}

check_vars() {
	local slug=$1
	shift
	local ret=0
	for VAR in "$@"; do
		if [[ -z ${!VAR} ]]; then
			if [[ $(get_files $slug|wc -l) > 1 ]]; then
				echo "Configure '$VAR' in one of:"
				get_files $slug | sed 's/./  -> &/'
			else
				echo "Configure '$VAR' in $(get_files $slug)"
			fi
			ret=1
		fi >>/dev/stderr
	done
	if [[ $ret != 0 ]]; then
		return 1
	fi
}

# makepkg configuration ########################################################

[[ -n ${MAKEPKG_CONF:-} ]] || MAKEPKG_CONF=/etc/makepkg.conf

load_conf_makepkg() {
	load_files makepkg
}

get_conf_makepkg() (
	set +euE
	local setting=$1
	local default=$2
	load_conf_makepkg
	printf '%s\n' "${!setting:-${default}}"
)

set_conf_makepkg() {
	local key=$1
	local val=$2
	for file in `get_files makepkg.conf|tac`; do
		if [[ -w $file ]]; then
			sed -i "/^\s*$key=/d" "$file"
			echo "$key='$val'" >> "$file"
			return 0
		fi
	done
	return 1
}


# libretools configuration #####################################################

check_conf_libretools() {
	check_vars libretools.conf \
		PARABOLAHOST LIBREDESTDIR BLACKLIST WORKDIR REPOS ARCHES \
		ABSLIBREGIT DIFFTOOL FULLBUILDCMD SIGEXT SIGID
}

load_conf_libretools() {
	load_files libretools
	check_conf_libretools
}

load_conf_libretools_chroot() {
	load_files chroot
	# Exclude CHROOTEXTRAPKG from the checks because an empty value is valid
	if [[ -f /.arch-chroot ]]; then
		# inside of a chroot, only CHROOTEXTRAPKG needs to be set, but
		# as stated above, we don't check for it.
		:
	else
		check_vars chroot.conf CHROOTDIR CHROOT
	fi
}

load_conf_libretools_librefetch() {
	load_files librefetch
	check_vars librefetch.conf MIRROR DOWNLOADER
}