#!/bin/ash
. /recalbox/share/system/configs/savesync/savesync.conf

PIPE="/tmp/savesync_pipe"
LOG_FILE="/recalbox/share/system/logs/savesync.log"

mkfifo "$PIPE"
chmod 666 "$PIPE"

# Function to write to disk
write_log() {
	printf "[%s] %s\n" "$(date '+%Y-%m-%d %H:%M:%S')" "$1" >>"$LOG_FILE"
}

# The listener loop
while true; do
	if read -r line <"$PIPE"; then
		case "$line" in
		LOG:*)
			# Remove the "LOG:" prefix and write
			write_log "${line#LOG:}"
			;;
		EVENT:*)
			# Handle Game Events (forked to background)
			(
				
				PIPE="/tmp/savesync_pipe"
				event_data="${line#EVENT:}"

				# Clean input
				$(echo "$event_data" | tr -d '\r')
				
				while IFS= read -r key val; do
					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!
							(
								printf "%s %s\n" "LOG:" "Syncing START for $(basename "$gp")" >${PIPE}

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

								# Fetch remote size
								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
									printf "%s %s\n" "LOG:" "Cloud save larger. Restoring..." >${PIPE}
									mkdir -p "$(dirname "$bp")"
									rclone copyto "$remote_f" "$sp" --backup-dir "$(dirname "$bp")"
								else
									printf "%s %s\n" "LOG:" "Local save current. Updating..."> >${PIPE}
									rclone update "$remote_f" "$sp"
								fi

								# SIGNAL SUCCESS (Key must match Publisher's expectation)
								printf "%s %s\n" "LOG:" "Save synced successfully" >${PIPE}
							) &

						elif [ "$st" = "endgame" ]; then
							# Syncing on end - we don't necessarily need to block here
							(
								printf "%s %s\n" "LOG:" "Syncing END for $(basename "$sp")" >${PIPE}
								rclone update "$sp" "$REMOTE_BASE/$sid/"
								printf "%s %s\n" "LOG:" "Final Sync Done." >${PIPE}

							) &
						fi

						# Clear variables for next burst of events
						sid=""
						gp=""
						sp=""
						bp=""
						act=""
						st=""
						;;
					esac
				done<$(printf "%s\n" "$event_data" | tr -d '\r')

				printf '%s\n' "LOG:Sync complete for $sp" >"$PIPE"
			) &
			;;
		esac
	fi
done