find channel by name or secret

examples/send_channel_message.js

@@ -14,9 +14,18 @@ connection.on("connected", async () => {
     // update clock on meshcore device
     await connection.syncDeviceTime();
 
-    // send message to channel 0
+    // find channel
+    const channel = await connection.findChannelByName("Public");
+    // const channel = await connection.findChannelBySecret(Buffer.from("8b3387e9c5cdea6ac9e5edbaa115cd72", "hex"));
+    if(!channel){
+        console.log("Channel not found");
+        await connection.close();
+        return;
+    }
+
+    // send message to channel
     console.log("Sending message...");
-    await connection.sendChannelTextMessage(0, "Hello from MeshCore.js");
+    await connection.sendChannelTextMessage(channel.channelIdx, "Hello from MeshCore.js");
 
     // disconnect
     await connection.close();

src/connection/connection.js

@@ -1692,6 +1692,31 @@ class Connection extends EventEmitter {
         });
     }
 
+    async findChannelByName(name) {
+
+        // get channels
+        const channels = await this.getChannels();
+
+        // find first channel matching name exactly
+        return channels.find((channel) => {
+            console.log(channel);
+            return channel.name === name;
+        });
+
+    }
+
+    async findChannelBySecret(secret) {
+
+        // get channels
+        const channels = await this.getChannels();
+
+        // find first channel matching secret
+        return channels.find((channel) => {
+            return BufferUtils.areBuffersEqual(secret, channel.secret);
+        });
+
+    }
+
     tracePath(path) {
         return new Promise(async (resolve, reject) => {
             try {