Add a function to print cell metadata

* This is useful for troubleshooting issues with cell metadata not being set.

frontend/foyle/package.json

@@ -24,6 +24,10 @@
       {
         "command": "foyle.helloWorld",
         "title": "Foyle HelloWorld"
+      },
+      {
+        "command": "foyle.printCell",
+        "title": "Foyle Print Cell Metadata"
       }
     ],
     "keybindings": [

frontend/foyle/src/web/controller.ts

@@ -66,6 +66,11 @@ export class Controller {
 }
 
 async function callExecute(cell: vscode.NotebookCell, client: client.FoyleClient): Promise<vscode.NotebookCellOutput[]> {
+  if (cell.metadata.hasOwnProperty("id")) {
+    console.log(`callExecute called on block id = ${cell.metadata["id"]}`);
+  } else {
+    console.log(`callExecute called on block without id`);
+  }
   console.log(`callExecute called ${cell.document.getText()}`); 
 
   const request = new agentpb.ExecuteRequest();

frontend/foyle/src/web/debug.ts

@@ -0,0 +1,30 @@
+import * as vscode from 'vscode';
+import {FoyleClient, getTraceID} from './client';
+import * as converters from './converters';
+import * as docpb from "../gen/foyle/v1alpha1/doc_pb";
+import * as agentpb from "../gen/foyle/v1alpha1/agent_pb";
+// printCell is a debug tool that prints the contents of a cell to the console
+// Its purpose is to help us debug problems by printing the contents of a cell
+// In particular the cell metadata
+export async function printCell() {
+  const editor = vscode.window.activeNotebookEditor;
+
+  if (!editor) {    
+    return;
+  }
+
+  if (editor?.selection.isEmpty) {    
+    return;
+  }
+
+  // We subtract 1 because end is non-inclusive
+  const lastSelectedCell = editor?.selection.end - 1;
+  var lastActiveCell = editor?.notebook.cellAt(lastSelectedCell);  
+  console.log(`Cell value: ${lastActiveCell.document.getText()}`);
+  console.log(`Cell language: ${lastActiveCell.document.languageId}`);
+  console.log(`Cell kind: ${lastActiveCell.kind}`);
+
+  Object.keys(lastActiveCell.metadata).forEach(key => {
+    console.log(`Cell Metadata key: ${key} value: ${lastActiveCell.metadata[key]}`);
+  });
+}

frontend/foyle/src/web/extension.ts

@@ -5,6 +5,7 @@ import { Controller } from './controller';
 import {FoyleClient} from './client';
 import { Serializer } from './serializer';
 import * as generate from './generate';
+import * as debug from './debug';
 // Create a client for the backend.
 const client = new FoyleClient;
 
@@ -52,6 +53,8 @@ export function activate(context: vscode.ExtensionContext) {
 	// Here's where we register the command that will generate a completion using the AI model
 	// You can set a keybinding for this command in the package.json file
   context.subscriptions.push(vscode.commands.registerCommand("foyle.generate", generate.generateCompletion));
+
+	context.subscriptions.push(vscode.commands.registerCommand("foyle.printCell", debug.printCell));
 	context.subscriptions.push(disposable);
 }