#!/bin/sh

. /lib/functions.sh
. /usr/share/libubox/jshn.sh

readonly bg_path="/www/luci-static/fluent/background"
readonly tmp_path="/tmp/fluent_background.tmp"

case "$1" in
"list")
	json_init
	json_add_object "avail"
	json_close_object
	json_add_object "remove"
		json_add_string "filename" "filename"
	json_close_object
	json_add_object "rename"
		json_add_string "newname" "filename"
	json_close_object
	json_add_object "set_mode"
		json_add_string "mode" "mode"
	json_close_object
	json_dump
	json_cleanup
	;;
"call")
	case "$2" in
	"avail")
		json_init
		json_add_int "avail" "$(df | grep -E '/$' | awk '{print $4}')"
		json_dump
		json_cleanup
		;;
	"remove")
		read -r input
		json_load "$input"
		json_get_var filename "filename"
		json_cleanup
		if dirname "$filename" | grep -q ".."; then
			echo '{ "result": 255 }'
			exit 255
		fi
		rm -f "$bg_path/$filename"
		echo '{ "result": 0 }'
		;;
	"rename")
		read -r input
		json_load "$input"
		json_get_var newname "newname"
		json_cleanup
		if dirname "$newname" | grep -q ".."; then
			echo '{ "result": 255 }'
			exit 255
		fi
		mkdir -p "$bg_path"
		if mv "$tmp_path" "$bg_path/$newname" 2>/dev/null; then
			chmod 0644 "$bg_path/$newname"
			echo '{ "result": 0 }'
		else
			echo '{ "result": 1 }'
		fi
		;;
	"set_mode")
		read -r input
		json_load "$input"
		json_get_var mode "mode"
		json_cleanup
		case "$mode" in
			light|dark|auto) ;;
			*) echo '{ "result": 255 }'; exit 255 ;;
		esac
		if uci -q set fluent.@global[0].mode="$mode" && uci -q commit fluent; then
			echo '{ "result": 0 }'
		else
			echo '{ "result": 1 }'
		fi
		;;
	esac
	;;
esac