fix(dev): Q dev handle no change required

Author: chengoramazon

packages/amazonq/.changes/next-release/Bug Fix-ff32752d-fa0b-4d38-b719-68eb3c9ddca6.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Q dev handle no change required"
+}

packages/core/package.nls.json

@@ -273,6 +273,7 @@
     "AWS.amazonq.featureDev.error.illegalStateTransition": "Illegal transition between states, restart the conversation",
     "AWS.amazonq.featureDev.error.prepareRepoFailedError": "Sorry, I ran into an issue while trying to upload your code. Please try again.",
     "AWS.amazonq.featureDev.error.promptRefusalException": "I'm sorry, I can't generate code for your request. Please make sure your message and code files comply with the <a href=\"https://aws.amazon.com/machine-learning/responsible-ai/policy/\">AWS Responsible AI Policy.</a>",
+    "AWS.amazonq.featureDev.error.noChangeRequiredException": "I’m sorry, I ran into an issue while trying to generate your code.\n\n- `/dev` can generate code to make a change in your project. Provide a detailed description of the new feature or code changes you want to make, including the specifics of what the code should achieve.\n\n- To ask me to explain, debug, or optimize your code, you can close this chat tab to start a new conversation.",
     "AWS.amazonq.featureDev.error.zipFileError": "The zip file is corrupted",
     "AWS.amazonq.featureDev.error.codeIterationLimitError": "Sorry, you've reached the quota for number of iterations on code generation. You can insert this code in your files or discuss a new plan. For more information on quotas, see the <a href=\"https://docs.aws.amazon.com/amazonq/latest/qdeveloper-ug/software-dev.html#quotas\" target=\"_blank\">Amazon Q Developer documentation.</a>",
     "AWS.amazonq.featureDev.error.tabIdNotFoundError": "I'm sorry, I'm having technical difficulties at the moment. Please try again.",

packages/core/src/amazonq/webview/ui/quickActions/generator.ts

@@ -29,8 +29,7 @@ export class QuickActionGenerator {
                               {
                                   command: '/dev',
                                   placeholder: 'Describe your task or issue in as much detail as possible',
-                                  description:
-                                      'Plan and implement new functionality across multiple files in your workspace.',
+                                  description: 'Generate code to make a change in your project',
                               },
                           ]
                         : []),

packages/core/src/amazonqFeatureDev/controllers/chat/controller.ts

@@ -14,6 +14,7 @@ import {
     ContentLengthError,
     FeatureDevServiceError,
     MonthlyConversationLimitError,
+    NoChangeRequiredException,
     PrepareRepoFailedError,
     PromptRefusalException,
     SelectedFolderNotInWorkspaceFolderError,
@@ -131,6 +132,11 @@ export class FeatureDevController {
                     this.initialExamples(data)
                     break
                 case FollowUpTypes.NewTask:
+                    this.messenger.sendAnswer({
+                        type: 'answer',
+                        tabID: data?.tabID,
+                        message: i18n('AWS.amazonq.featureDev.answer.newTaskChanges'),
+                    })
                     return this.newTask(data)
                 case FollowUpTypes.CloseSession:
                     return this.closeSession(data)
@@ -246,6 +252,15 @@ export class FeatureDevController {
             case ZipFileError.errorName:
                 this.messenger.sendErrorMessage(errorMessage, message.tabID, 0, session?.conversationIdUnsafe, true)
                 break
+            case NoChangeRequiredException.errorName:
+                this.messenger.sendAnswer({
+                    type: 'answer',
+                    tabID: message.tabID,
+                    message: err.message,
+                    canBeVoted: true,
+                })
+                // Allow users to re-work the task description.
+                return this.newTask(message)
             case CodeIterationLimitError.errorName:
                 this.messenger.sendAnswer({
                     type: 'answer',
@@ -758,11 +773,7 @@ export class FeatureDevController {
         // Re-run the opening flow, where we check auth + create a session
         await this.tabOpened(message)
 
-        this.messenger.sendAnswer({
-            type: 'answer',
-            tabID: message.tabID,
-            message: i18n('AWS.amazonq.featureDev.answer.newTaskChanges'),
-        })
+        this.messenger.sendChatInputEnabled(message.tabID, true)
         this.messenger.sendUpdatePlaceholder(message.tabID, i18n('AWS.amazonq.featureDev.placeholder.describe'))
     }
 

packages/core/src/amazonqFeatureDev/errors.ts

@@ -66,6 +66,15 @@ export class PromptRefusalException extends ToolkitError {
     }
 }
 
+export class NoChangeRequiredException extends ToolkitError {
+    static errorName = 'NoChangeRequiredException'
+    constructor() {
+        super(i18n('AWS.amazonq.featureDev.error.noChangeRequiredException'), {
+            code: 'NoChangeRequiredException',
+        })
+    }
+}
+
 export class FeatureDevServiceError extends ToolkitError {
     static errorName = 'FeatureDevServiceError'
     constructor(message: string, code: string) {

packages/core/src/amazonqFeatureDev/session/sessionState.ts

@@ -13,7 +13,12 @@ import { telemetry } from '../../shared/telemetry/telemetry'
 import { VirtualFileSystem } from '../../shared/virtualFilesystem'
 import { VirtualMemoryFile } from '../../shared/virtualMemoryFile'
 import { featureDevScheme } from '../constants'
-import { FeatureDevServiceError, IllegalStateTransition, PromptRefusalException } from '../errors'
+import {
+    FeatureDevServiceError,
+    IllegalStateTransition,
+    NoChangeRequiredException,
+    PromptRefusalException,
+} from '../errors'
 import {
     CodeGenerationStatus,
     CurrentWsFolders,
@@ -208,6 +213,9 @@ abstract class CodeGenBase {
                             throw new PromptRefusalException()
                         }
                         case codegenResult.codeGenerationStatusDetail?.includes('EmptyPatch'): {
+                            if (codegenResult.codeGenerationStatusDetail?.includes('NO_CHANGE_REQUIRED')) {
+                                throw new NoChangeRequiredException()
+                            }
                             throw new FeatureDevServiceError(
                                 i18n('AWS.amazonq.featureDev.error.codeGen.default'),
                                 'EmptyPatchException'