#!/bin/sh

. /usr/share/libubox/jshn.sh

BBFDM_DMMAP_CONFIG="/etc/bbfdm/dmmap"
BBFDM_DMMAP_SAVEDIR="/tmp/.bbfdm"

check_result() {
	local res="$1"
	local service="$2"
	local action="$3"

	if [ "${res}" -ne 0 ]; then
		echo "{ \"error\": \"Failed to ${action} ${service} service\" }"
		exit "${res}"
	fi
}

apply_config_changes() {
	local service="$1"
	local action="$3"

	# Check if either service or action is empty
	if [ -z "$service" ] || [ -z "$action" ]; then
		return
	fi
	
	logger -t bbf.config -p info "Applying $action configuration for service: $service"

	# Commit/Revert config changes
	ubus -t 1 call uci ${action} "{'config': '${service}'}"
	check_result "$?" "${service}" "${action}"
}

case "$1" in
	list)
		echo '{ "commit": { "services": [] }, "revert": { "services": [] } }'
	;;
	call)
		# Read input JSON from standard input
		read -r input

		# Parse input JSON
		json_load "${input}"

		# Check if 'services' array is provided
		json_get_type type "services"
		if [ -z "${type}" ]; then
			echo '{ "error": "Services array should be defined !!!" }'
			exit 1
		fi

		# Check if 'services' is array
		if [ "${type}" != "array"  ]; then
			echo '{ "error": "Services argument should be array of strings !!!" }'
			exit 1
		fi

		# Iterate over each service and apply config changes
		json_for_each_item "apply_config_changes" "services" "$2"

		# Commit/Revert bbfdm dmmap config changes
		for file in "${BBFDM_DMMAP_CONFIG}"/*; do
			file_name=$(basename "${file}")
			logger -t bbf.config -p info "Applying $2 configuration for file: $file_name"
			uci -q -c "${BBFDM_DMMAP_CONFIG}" -t "${BBFDM_DMMAP_SAVEDIR}" "$2" "${file_name}"
			check_result "$?" "${file_name}" "$2"
		done

		echo '{ "status": "ok" }'
	;;
esac