#!/bin/ash
#shellcheck shell=dash
#

PAYLOAD=$(cat /tmp/es_state.inf)
REMOTE_BASE="saves:gamepi-tv"
PIPE="/tmp/savesync_pipe"

log() {
	# $1 = level
	# $2 = message
	printf "LOG:[%s] %s" "$1" "$2" >"$PIPE"
}

log "INFO" "Event received: $PAYLOAD"
# Process the multi-line event data
# We use echo and a pipe to feed the while loop
echo "$PAYLOAD" | tr -d '\r' | while IFS="=" read -r key val; do
	case "$key" in
	"SystemId") sid="$val" ;;
	"GamePath")
		gp="$val"
		sp=$(echo "$val" | sed 's|roms|saves|; s|\.[^.]*$|.srm|')
		bp=$(echo "$sp" | sed 's|saves|archives|')
		;;
	"Action") act="$val" ;;
	"State")
		st="$val"

		if [ "$st" = "playing" ] && [ "$act" = "rungame" ]; then
			log "INFO" "Sync START: $(basename "$gp")"

			remote_f="$REMOTE_BASE/$sid/$(basename "$sp")"
			loc_sz=$(stat -c %s "$sp" 2>/dev/null || echo 0)
			rem_sz=$(rclone lsjson "$remote_f" 2>/dev/null | grep -o '"Size":[0-9]*' | cut -d: -f2)
			: "${rem_sz:=0}"

			if [ "$loc_sz" -lt "$rem_sz" ]; then
				log "WARN" "Cloud save larger ($rem_sz). Restoring..."
				mkdir -p "$(dirname "$bp")"
				log "DEBUG" "rclone copyto $remote_f $sp --backup-dir $(dirname $bp)"
				rclone copyto "$remote_f" "$sp" --backup-dir "$(dirname "$bp")"
			else
				log "INFO" "Local save current. Updating..."
				log "DEBUG" "rclone update $remote_f $sp"
				rclone update "$remote_f" "$sp"
			fi

		elif [ "$st" = "endgame" ]; then
			log "INFO" "Sync END: $(basename "$sp")"
			log "DEBUG" "rclone update $sp $REMOTE_BASE/$sid/"
			rclone update "$sp" "$REMOTE_BASE/$sid/"
			log "INFO" "Final Sync Done."
			#mosquitto_pub -t "$RESPONSE_TOPIC" -m "SaveSync=0" 2>/dev/null
		fi
		;;
	esac
done