chore(amazonq): nep cherrypick codewhispererService.ts (#1689)

Author: Will-ShaoHua

server/aws-lsp-codewhisperer/src/shared/codeWhispererService.ts

@@ -22,8 +22,11 @@ import {
     createCodeWhispererTokenClient,
     RequestExtras,
 } from '../client/token/codewhisperer'
+import CodeWhispererSigv4Client = require('../client/sigv4/codewhisperersigv4client')
+import CodeWhispererTokenClient = require('../client/token/codewhispererbearertokenclient')
+import { getErrorId } from './utils'
+import { GenerateCompletionsResponse } from '../client/token/codewhispererbearertokenclient'
 
-// Define our own Suggestion interface to wrap the differences between Token and IAM Client
 export interface Suggestion extends CodeWhispererTokenClient.Completion, CodeWhispererSigv4Client.Recommendation {
     itemId: string
 }
@@ -42,16 +45,17 @@ export interface ResponseContext {
     nextToken?: string
 }
 
+export enum SuggestionType {
+    EDIT = 'EDIT',
+    COMPLETION = 'COMPLETION',
+}
+
 export interface GenerateSuggestionsResponse {
     suggestions: Suggestion[]
+    suggestionType?: SuggestionType
     responseContext: ResponseContext
 }
 
-import CodeWhispererSigv4Client = require('../client/sigv4/codewhisperersigv4client')
-import CodeWhispererTokenClient = require('../client/token/codewhispererbearertokenclient')
-import { getErrorId } from './utils'
-
-// Right now the only difference between the token client and the IAM client for codewhsiperer is the difference in function name
 // This abstract class can grow in the future to account for any additional changes across the clients
 export abstract class CodeWhispererServiceBase {
     protected readonly codeWhispererRegion
@@ -134,7 +138,6 @@ export class CodeWhispererServiceIAM extends CodeWhispererServiceBase {
         // add cancellation check
         // add error check
         if (this.customizationArn) request = { ...request, customizationArn: this.customizationArn }
-
         const response = await this.client.generateRecommendations(request).promise()
         const responseContext = {
             requestId: response?.$response?.requestId,
@@ -148,6 +151,7 @@ export class CodeWhispererServiceIAM extends CodeWhispererServiceBase {
 
         return {
             suggestions: response.recommendations as Suggestion[],
+            suggestionType: SuggestionType.COMPLETION,
             responseContext,
         }
     }
@@ -172,6 +176,7 @@ export class CodeWhispererServiceToken extends CodeWhispererServiceBase {
         sdkInitializator: SDKInitializator
     ) {
         super(codeWhispererRegion, codeWhispererEndpoint)
+
         const options: CodeWhispererTokenClientConfigurationOptions = {
             region: this.codeWhispererRegion,
             endpoint: this.codeWhispererEndpoint,
@@ -193,7 +198,23 @@ export class CodeWhispererServiceToken extends CodeWhispererServiceBase {
                             throw err
                         }
                     })
-                    req.on('complete', () => {
+                    req.on('complete', response => {
+                        const requestStartTime = req.startTime?.getTime() || 0
+                        const requestEndTime = new Date().getTime()
+                        const latency = requestStartTime > 0 ? requestEndTime - requestStartTime : 0
+
+                        const requestBody = req.httpRequest.body ? JSON.parse(String(req.httpRequest.body)) : {}
+                        this.completeRequest(req)
+                    })
+                    req.on('error', async (error, response) => {
+                        const requestStartTime = req.startTime?.getTime() || 0
+                        const requestEndTime = new Date().getTime()
+                        const latency = requestStartTime > 0 ? requestEndTime - requestStartTime : 0
+
+                        const requestBody = req.httpRequest.body ? JSON.parse(String(req.httpRequest.body)) : {}
+                        this.completeRequest(req)
+                    })
+                    req.on('error', () => {
                         this.completeRequest(req)
                     })
                     req.on('error', () => {
@@ -219,23 +240,40 @@ export class CodeWhispererServiceToken extends CodeWhispererServiceBase {
         // add cancellation check
         // add error check
         if (this.customizationArn) request.customizationArn = this.customizationArn
-
         const response = await this.client.generateCompletions(this.withProfileArn(request)).promise()
         const responseContext = {
             requestId: response?.$response?.requestId,
             codewhispererSessionId: response?.$response?.httpResponse?.headers['x-amzn-sessionid'],
             nextToken: response.nextToken,
         }
+        return this.mapCodeWhispererApiResponseToSuggestion(response, responseContext)
+    }
 
-        for (const recommendation of response?.completions ?? []) {
-            Object.assign(recommendation, { itemId: this.generateItemId() })
-        }
+    private mapCodeWhispererApiResponseToSuggestion(
+        apiResponse: GenerateCompletionsResponse,
+        responseContext: ResponseContext
+    ): GenerateSuggestionsResponse {
+        if (apiResponse?.predictions && apiResponse.predictions.length > 0) {
+            const suggestionType = apiResponse.predictions[0].edit ? SuggestionType.EDIT : SuggestionType.COMPLETION
+            const predictionType = suggestionType === SuggestionType.COMPLETION ? 'completion' : 'edit'
 
+            return {
+                suggestions: apiResponse.predictions.map(prediction => ({
+                    content: prediction[predictionType]?.content ?? '',
+                    references: prediction[predictionType]?.references ?? [],
+                    itemId: this.generateItemId(),
+                })),
+                suggestionType,
+                responseContext,
+            }
+        }
         return {
-            suggestions: response.completions as Suggestion[],
+            suggestions: apiResponse.completions as Suggestion[],
+            suggestionType: SuggestionType.COMPLETION,
             responseContext,
         }
     }
+
     public async codeModernizerCreateUploadUrl(
         request: CodeWhispererTokenClient.CreateUploadUrlRequest
     ): Promise<CodeWhispererTokenClient.CreateUploadUrlResponse> {