feat(amazonq): handle context command and open file for chat with lsp

Author: zixlin7

package-lock.json

@@ -6,11 +6,16 @@
 import vscode, { env, version } from 'vscode'
 import * as nls from 'vscode-nls'
 import * as crypto from 'crypto'
-import { LanguageClient, LanguageClientOptions } from 'vscode-languageclient'
+import { LanguageClient, LanguageClientOptions, ResponseError } from 'vscode-languageclient'
 import { InlineCompletionManager } from '../app/inline/completion'
 import { AmazonQLspAuth, encryptionKey, notificationTypes } from './auth'
 import { AuthUtil } from 'aws-core-vscode/codewhisperer'
-import { ConnectionMetadata } from '@aws/language-server-runtimes/protocol'
+import {
+    ConnectionMetadata,
+    ShowDocumentParams,
+    ShowDocumentRequest,
+    ShowDocumentResult,
+} from '@aws/language-server-runtimes/protocol'
 import { Settings, oidcClientName, createServerOptions, globals, Experiments, Commands } from 'aws-core-vscode/shared'
 import { activate } from './chat/activation'
 import { AmazonQResourcePaths } from './lspInstaller'
@@ -101,7 +106,17 @@ export async function startLanguageServer(
                 },
             }
         })
+
         await auth.refreshConnection()
+        client.onRequest<ShowDocumentParams, ShowDocumentResult>(
+            ShowDocumentRequest.method,
+            async (params: ShowDocumentParams): Promise<ShowDocumentParams | ResponseError<ShowDocumentResult>> => {
+                const uri = vscode.Uri.parse(params.uri)
+                const doc = await vscode.workspace.openTextDocument(uri)
+                await vscode.window.showTextDocument(doc, { preview: false })
+                return params
+            }
+        )
 
         if (Experiments.instance.get('amazonqLSPInline', false)) {
             const inlineManager = new InlineCompletionManager(client)