feat(plugin): add a way to know if there are connected nodes without …

…asking their capabilities.
GeoTecINIT · Aug 2, 2022 · ba0fc47 · ba0fc47
1 parent 46d490e
commit ba0fc47
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Showing 3 changed files with 22 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -255,10 +255,11 @@ export const defaultConfig = {
 
 ### [`NodeDiscoverer`](src/internal/node/discoverer/node-discoverer.android.ts)
 
-| Function                                    | Return type                | Description                                                                                                                            |
-|---------------------------------------------|----------------------------|----------------------------------------------------------------------------------------------------------------------------------------|
-| `getLocalNode()`                            | `Promise<Node>`            | Get a reference to the local node (smartphone).                                                                                        |
-| `getConnectedNodes(timeout: number = 5000)` | `Promise<NodeDiscovered[]` | Get the currently connected nodes. Timeout indicates the maximum wait time for the connected nodes to communicate with the smartphone. |
+| Function                                    | Return type                | Description                                                                                                                                                        |
+|---------------------------------------------|----------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `getLocalNode()`                            | `Promise<Node>`            | Get a reference to the local node (smartphone).                                                                                                                    |
+| `areConnectedNodes()`                       | `Promise<boolean>`         | Returns true if there are connected nodes.                                                                                                                         |
+| `getConnectedNodes(timeout: number = 5000)` | `Promise<NodeDiscovered[]` | Get the currently connected nodes and their available sensors. Timeout indicates the maximum wait time for the connected nodes to communicate with the smartphone. |
 
 #### [`Node`](src/internal/node/index.ts)
 

diff --git a/src/internal/node/discoverer/node-discoverer.android.ts b/src/internal/node/discoverer/node-discoverer.android.ts
@@ -37,6 +37,22 @@ export class AndroidNodeDiscoverer implements NodeDiscoverer {
         });
     }
 
+    public areConnectedNodes(): Promise<boolean> {
+        const connectedNodes = this.nodeClient.getConnectedNodes();
+        return new Promise<boolean>((resolve) => {
+            connectedNodes.addOnCompleteListener(new OnCompleteListener({
+                onComplete: task => {
+                    if (!task.isSuccessful()) {
+                        return resolve(false);
+                    }
+
+                    const nodes = task.getResult();
+                    resolve(nodes.size() !== 0);
+                }
+            }));
+        });
+    }
+
     public getConnectedNodes(timeout: number = 5000): Promise<NodeDiscovered[]> {
         return firstValueFrom(
             this.scanConnectedNodes(timeout)

diff --git a/src/internal/node/discoverer/node-discoverer.ts b/src/internal/node/discoverer/node-discoverer.ts
@@ -2,6 +2,7 @@ import { Node } from "../index";
 
 export interface NodeDiscoverer {
     getLocalNode(): Promise<Node>;
+    areConnectedNodes(): Promise<boolean>;
     getConnectedNodes(timeout?: number): Promise<NodeDiscovered[]>;
 }