Improved installer, and added more info to readme.

README.md

@@ -1,6 +1,12 @@
 # Rail Signal
 A comprehensive solution to tracking and managing your rail system, in real time.
 
+## Setup
+To set up your own Rail Signal, system, you will need to follow the following steps:
+1. Download and run the Rail Signal API and web app. Go to the [releases](https://github.com/andrewlalis/RailSignalAPI/releases) page to download the latest release. Then, place the JAR file in your desired location, and run it with `java -jar rail-signal.jar`.
+2. Open the web app (http://localhost:8080 by default) and create a new rail system, and add components and segments to build your network. More information about this will be given later.
+3. Add components to your actual rail system, and install a driver script onto your device. For Minecraft rail systems using Immersive railroading and some computer mod, you can run `pastebin run jKyAiE8k` to run an installation script. *Please make an issue if you have a system for which there is not yet any available driver.*
+
 ## Development
 To work on and develop Rail Signal, you will need to run both the Java/Spring-Boot backend API, and the Vue/Quasar frontend app.
 

src/main/java/nl/andrewl/railsignalapi/live/ComponentDownlinkService.java

@@ -6,8 +6,12 @@ import nl.andrewl.railsignalapi.dao.ComponentRepository;
 import nl.andrewl.railsignalapi.dao.LinkTokenRepository;
 import nl.andrewl.railsignalapi.live.dto.ComponentDataMessage;
 import nl.andrewl.railsignalapi.live.dto.ComponentMessage;
+import nl.andrewl.railsignalapi.live.dto.SegmentStatusMessage;
+import nl.andrewl.railsignalapi.live.dto.SwitchUpdateMessage;
 import nl.andrewl.railsignalapi.live.websocket.AppUpdateService;
 import nl.andrewl.railsignalapi.model.component.Component;
+import nl.andrewl.railsignalapi.model.component.Signal;
+import nl.andrewl.railsignalapi.model.component.Switch;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -52,6 +56,19 @@ public class ComponentDownlinkService {
 			downlink.send(msg);
 			appUpdateService.sendUpdate(c.getRailSystem().getId(), msg);
 
+			// Send initial data updates to make sure that devices' state is up to date immediately.
+			if (c instanceof Signal sig) {
+				downlink.send(new SegmentStatusMessage(c.getId(), sig.getSegment().getId(), sig.getSegment().isOccupied()));
+			} else if (c instanceof Switch sw) {
+				long activeConfigId;
+				if (sw.getActiveConfiguration() != null) {
+					activeConfigId = sw.getActiveConfiguration().getId();
+				} else {
+					activeConfigId = sw.getPossibleConfigurations().stream().findAny().orElseThrow().getId();
+				}
+				downlink.send(new SwitchUpdateMessage(c.getId(), activeConfigId));
+			}
+
 			Set<ComponentDownlink> downlinks = downlinksByCId.computeIfAbsent(c.getId(), aLong -> new HashSet<>());
 			downlinks.add(downlink);
 		}

src/main/resources/driver/cc/installer.lua

@@ -148,12 +148,20 @@ end
 -- SCRIPT START
 
 local config = {}
+local args = {...}
 print("Rail Signal Driver Installer for CC:Tweaked")
 print("-------------------------------------------")
-print("Please enter the base URL for your Rail System site.")
-print("  For example: http://localhost:8080")
-local baseUrl = readUrl()
+if #args < 1 then
+  print("Error: Missing required baseURL argument.")
+  return
+end
+local baseUrl = args[1]
 config.apiUrl = baseUrl .. "/api"
+local statusResponse = http.get(config.apiUrl .. "/status")
+if not statusResponse then
+  print("Error: Could not reach the the Rail Signal system at " .. config.apiUrl .. "/status")
+  return
+end
 if startsWith(baseUrl, "https") then
   config.wsUrl = "wss" .. string.sub(baseUrl, 6) .. "/api/ws/component"
 else