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savesync[rungame,endgame](sync).ash

@@ -0,0 +1,58 @@
+#!/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