From bfc6bc362c8501e55cadf660aba9e8ed1bb052d4 Mon Sep 17 00:00:00 2001
From: liamcottle <liam@liamcottle.com>
Date: Wed, 20 Nov 2024 22:00:51 +1300
Subject: [PATCH] send current timestamp to connected node when config has
 completed

---
 src/js/Connection.js | 20 ++++++++++++++++++++
 src/js/NodeAPI.js    | 25 +++++++++++++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/src/js/Connection.js b/src/js/Connection.js
index c1064e4..7410fff 100644
--- a/src/js/Connection.js
+++ b/src/js/Connection.js
@@ -1,6 +1,7 @@
 import GlobalState from "./GlobalState.js";
 import {BleConnection, Constants, HttpConnection, Protobuf, SerialConnection, Types,} from "@meshtastic/js";
 import Database from "./Database.js";
+import NodeAPI from "./NodeAPI.js";
 
 class Connection {
 
@@ -191,6 +192,8 @@ class Connection {
 
             await databaseToBeReady;
 
+            console.log("onFromRadio", data);
+
             // handle packets
             // we are doing this to get error info for a request id as it's not provided in the onRoutingPacket event
             if(data.payloadVariant.case.toString() === "packet") {
@@ -216,6 +219,23 @@ class Connection {
                 }
             }
 
+            // handle config complete
+            if(data.payloadVariant.case.toString() === "configCompleteId"){
+
+                console.log("config complete");
+
+                // send current timestamp to meshtastic device
+                // this allows it to send us an semi accurate rx timestamp for packets when we connect later on
+                // if we don't set the time, the node may not know a time at all, in which case rxTime will be zero
+                // or, the node might have a timestamp, but its drifted out of sync
+                // so we will just send the node the current time each time we connect to it
+                try {
+                    const timestampInSeconds = Math.floor(Date.now() / 1000);
+                    await NodeAPI.setTime(timestampInSeconds);
+                } catch(e) {}
+
+            }
+
         });
 
         // listen for node info
diff --git a/src/js/NodeAPI.js b/src/js/NodeAPI.js
index a0ef500..171d18c 100644
--- a/src/js/NodeAPI.js
+++ b/src/js/NodeAPI.js
@@ -69,6 +69,31 @@ class NodeAPI {
 
     }
 
+    /**
+     * Sets the provided timestamp as the current time on the meshtastic device.
+     * @param timestamp the timestamp in seconds to set as the current time
+     * @returns {Promise<*>}
+     */
+    static async setTime(timestamp) {
+
+        // create admin message packet
+        var adminMessage = Protobuf.Admin.AdminMessage.fromJson({
+            setTimeOnly: timestamp,
+        });
+
+        // create packet data
+        const byteData = adminMessage.toBinary().buffer;
+        const portNum = Protobuf.Portnums.PortNum.ADMIN_APP;
+        const destination = GlobalState.myNodeId;
+        const channel = 0;
+        const wantAck = true;
+        const wantResponse = false;
+
+        // send packet
+        return await GlobalState.connection.sendPacket(byteData, portNum, destination, channel, wantAck, wantResponse);
+
+    }
+
     /**
      * Removes the node from global state, and also tells the meshtastic device to remove the node.
      * @param nodeId the node id to remove