start implementing client based on meshtxt

src/js/Connection.js

@@ -0,0 +1,64 @@
+import GlobalState from "./GlobalState.js";
+import {BleConnection, Constants, SerialConnection} from "@liamcottle/meshcore.js";
+
+class Connection {
+
+    static async connectViaBluetooth() {
+        await this.connect(await BleConnection.open());
+    }
+
+    static async connectViaSerial() {
+        await this.connect(await SerialConnection.open());
+    }
+
+    static async connect(connection) {
+        GlobalState.connection = connection;
+        GlobalState.connection.on("connected", () => this.onConnected());
+        GlobalState.connection.on("disconnected", () => this.onDisconnected());
+    }
+
+    static async disconnect() {
+
+        // disconnect
+        GlobalState.connection?.close();
+
+        // update ui
+        GlobalState.connection = null;
+
+    }
+
+    static async onConnected() {
+
+        // clear previous connection state
+        GlobalState.contacts = [];
+
+        GlobalState.connection.on(Constants.PushCodes.Advert, async () => {
+            console.log("Advert");
+            await this.loadContacts();
+        });
+
+        GlobalState.connection.on(Constants.PushCodes.PathUpdated, async (event) => {
+            console.log("PathUpdated", event);
+            await this.loadContacts();
+        });
+
+        await this.loadSelfInfo();
+        await this.loadContacts();
+
+    }
+
+    static async onDisconnected() {
+        await this.disconnect();
+    }
+
+    static async loadSelfInfo() {
+        GlobalState.selfInfo = await GlobalState.connection.getSelfInfo();
+    }
+
+    static async loadContacts() {
+        GlobalState.contacts = await GlobalState.connection.getContacts();
+    }
+
+}
+
+export default Connection;