Change messaginging, allow adding more message types later

src/main.ts

@@ -7,7 +7,7 @@ import { createUrl, parseUrl } from './url/UrlHandler.js';
 import { wktToGeoJSON } from '@terraformer/wkt';
 import PPENHandler from './files/ppenhandler.js';
 import type { GeoJsonObject } from 'geojson';
-import type { SearchStatusMessage, StartSearchMessage } from './worker/messages.js';
+import type { FromWorkerMessage, ToWorkerMessage } from './worker/messages.js';
 
 // Outside influences
 let mapHandler = new MapHandler();
@@ -286,10 +286,13 @@ function updateState() {
 
 // In case of messages from the web worker, do work
 worker.onmessage = e => {
-	let message = e.data as SearchStatusMessage;
-	state.foundPath = message.path;
-	state.calculating = false;
-	updateState();
+	let fromWorker = e.data as FromWorkerMessage;
+	let message = fromWorker.message;
+	if (message.type == 'SearchFinished') {
+		state.foundPath = message.path;
+		state.calculating = false;
+		updateState();
+	}
 }
 
 function calculateRoute(): void {
@@ -326,9 +329,12 @@ function calculateRoute(): void {
 		weights.push(weightsRow);
 	}
 
-	let startSearchMessage: StartSearchMessage = {
-		weights: weights
-	};
+	let startSearchMessage: ToWorkerMessage = {
+		message: {
+			type: "StartSearch",
+			weights: weights
+		}
+	}
 
 	worker.postMessage(startSearchMessage);
 }