# vi: ft=sh

CONF_DELIMITER="="
CONF_SETTING=()
CONF_VALUES=()

# 1: Setting 2: Value
function conf_set() {
	CONF_SETTING+=("$1")
	CONF_VALUES+=("$2")
}

# 1: File
# Modify Configuration file
function conf_apply() {
	[ -z "$1" ] && return

	if [ ! -f "$1" ]; then
		>&2 echo $1 not found. Creating it
		conf_create $@
		return $?
	fi

	for (( i=0; i < ${#CONF_SETTING[@]}; i++ )); do
		if grep -q "^\s*${CONF_SETTING[$i]}\s*$CONF_DELIMITER\s*.*\$" "$1"; then
			sed -i "s/^\(\s*${CONF_SETTING[$i]}\s*$CONF_DELIMITER\s*\).*\$/\1${CONF_VALUES[$i]}/" "$1"
		else
			echo "${CONF_SETTING[$i]}$CONF_DELIMITER${CONF_VALUES[$i]}" >> "$1"
		fi
	done

	CONF_SETTING=()
	CONF_VALUES=()
}

# 1: File
# Create configuration file, replace if existing
function conf_create() {
	[ -f "$1" ] && mv "$1" "$1.bak"

	for (( i=0; i < ${#CONF_SETTING[@]}; i++ )); do
		echo "${CONF_SETTING[$i]}${CONF_DELIMITER}${CONF_VALUES[$i]}" >> "$1"
	done

	CONF_SETTING=()
	CONF_VALUES=()
}