#!/bin/ash
# shellcheck shell=dash

. /recalbox/share/system/configs/savesync/savesync.conf

log() {
	mosquitto_pub -h 127.0.0.1 -p 1883 -q 0 -t "$LOG_TOPIC" -m "SaveLog=[$(date '+%H:%M:%S')] [DAEMON] [$1] $2" 2>/dev/null
}

log "INFO" "--- Daemon Active ---"

mosquitto_sub -h 127.0.0.1 -p 1883 -t "$TOPIC" | while IFS="=" read -r key value; do
	# Clean input
	val=$(echo "$value" | tr -d '\r')

	case "$key" in
	"SystemId") sid="$val" ;;
	"GamePath")
		gp="$val"
		# Fast path transformation using sed
		sp=$(echo "$val" | sed 's|roms|saves|; s|\.[^.]*$|.srm|')
		bp=$(echo "$sp" | sed 's|saves|archives|')
		;;
	"Action") act="$val" ;;
	"State")
		st="$val"

		# Check if we have the full "Start Game" context
		if [ "$st" = "playing" ] && [ "$act" = "rungame" ]; then
			# FORK to background, but keep current variables!
			(
				log "INFO" "Syncing START for $(basename "$gp")"

				remote_f="$REMOTE_BASE/$sid/$(basename "$sp")"
				loc_sz=$(stat -c %s "$sp" 2>/dev/null || echo 0)

				# Fetch remote size
				log "DEBUG" "rclone lsjson "$remote_f""
				rem_sz=$(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. 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

				# SIGNAL SUCCESS (Key must match Publisher's expectation)
				mosquitto_pub -h 127.0.0.1 -p 1883 -t "$RESPONSE_TOPIC" -m "SaveSync=0"
			) &

		elif [ "$st" = "endgame" ]; then
			# Syncing on end - we don't necessarily need to block here
			(
				log "INFO" "Syncing END for $(basename "$sp")"
				log "DEBUG" "rclone update "$sp" "$REMOTE_BASE/$sid/""
				rclone update "$sp" "$REMOTE_BASE/$sid/"
				log "INFO" "Final Sync Done."

				# Optional: Tell publisher we are done (though ES usually doesn't wait on endgame)
				mosquitto_pub -h 127.0.0.1 -p 1883 -t "$RESPONSE_TOPIC" -m "SaveSync=0"
			) &
		fi

		# Clear variables for next burst of events
		sid=""
		gp=""
		sp=""
		bp=""
		act=""
		st=""
		;;
	esac
done