fix(amazonq): Use document change event for auto trigger classifier input (#7697)

## Problem

The auto trigger classifier needs the entire document change event as
input to correctly predict whether to make auto trigger or not. This
code path was lost when we migrate inline completion to Flare (language
server).

## Solution

Implement the IDE side changes for below PRs:

aws/language-server-runtimes#618

aws/language-servers#1912

https://github.com/aws/language-servers/pull/1914/files


---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

Author: leigaol

package-lock.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Use documentChangeEvent as auto trigger condition"
+}

packages/amazonq/.changes/next-release/Bug Fix-9d694e40-7fc7-4504-b08c-6b22a5ebcb1c.json

@@ -335,7 +335,8 @@ export class AmazonQInlineCompletionItemProvider implements InlineCompletionItem
                 context,
                 token,
                 isAutoTrigger,
-                getAllRecommendationsOptions
+                getAllRecommendationsOptions,
+                this.documentEventListener.getLastDocumentChangeEvent(document.uri.fsPath)?.event
             )
             // get active item from session for displaying
             const items = this.sessionManager.getActiveRecommendation()

packages/amazonq/src/app/inline/completion.ts

@@ -2,10 +2,12 @@
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */
+import * as vscode from 'vscode'
 import {
     InlineCompletionListWithReferences,
     InlineCompletionWithReferencesParams,
     inlineCompletionWithReferencesRequestType,
+    TextDocumentContentChangeEvent,
 } from '@aws/language-server-runtimes/protocol'
 import { CancellationToken, InlineCompletionContext, Position, TextDocument } from 'vscode'
 import { LanguageClient } from 'vscode-languageclient'
@@ -40,17 +42,28 @@ export class RecommendationService {
         context: InlineCompletionContext,
         token: CancellationToken,
         isAutoTrigger: boolean,
-        options: GetAllRecommendationsOptions = { emitTelemetry: true, showUi: true }
+        options: GetAllRecommendationsOptions = { emitTelemetry: true, showUi: true },
+        documentChangeEvent?: vscode.TextDocumentChangeEvent
     ) {
         // Record that a regular request is being made
         this.cursorUpdateRecorder?.recordCompletionRequest()
+        const documentChangeParams = documentChangeEvent
+            ? {
+                  textDocument: {
+                      uri: document.uri.toString(),
+                      version: document.version,
+                  },
+                  contentChanges: documentChangeEvent.contentChanges.map((x) => x as TextDocumentContentChangeEvent),
+              }
+            : undefined
 
         let request: InlineCompletionWithReferencesParams = {
             textDocument: {
                 uri: document.uri.toString(),
             },
             position,
             context,
+            documentChangeParams: documentChangeParams,
         }
         if (options.editsStreakToken) {
             request = { ...request, partialResultToken: options.editsStreakToken }

packages/amazonq/src/app/inline/recommendationService.ts

@@ -146,6 +146,7 @@ describe('RecommendationService', () => {
                 },
                 position: mockPosition,
                 context: mockContext,
+                documentChangeParams: undefined,
             })
 
             // Verify session management
@@ -187,6 +188,7 @@ describe('RecommendationService', () => {
                 },
                 position: mockPosition,
                 context: mockContext,
+                documentChangeParams: undefined,
             }
             const secondRequestArgs = sendRequestStub.secondCall.args[1]
             assert.deepStrictEqual(firstRequestArgs, expectedRequestArgs)

packages/amazonq/test/unit/amazonq/apps/inline/recommendationService.test.ts

@@ -471,8 +471,8 @@
         "@aws-sdk/types": "^3.13.1",
         "@aws/chat-client": "^0.1.4",
         "@aws/chat-client-ui-types": "^0.1.47",
-        "@aws/language-server-runtimes": "^0.2.102",
-        "@aws/language-server-runtimes-types": "^0.1.43",
+        "@aws/language-server-runtimes": "^0.2.111",
+        "@aws/language-server-runtimes-types": "^0.1.47",
         "@cspotcode/source-map-support": "^0.8.1",
         "@sinonjs/fake-timers": "^10.0.2",
         "@types/adm-zip": "^0.4.34",