Localize pipeline fallback notifications

src/ai/unified-ai-request-pipeline.ts

@@ -292,7 +292,7 @@ export async function prepareUnifiedAiRequestPipeline(params: {
     ];
 
     const state = createAiRequestPipelineState(options);
-    const fallbackNotifier = new PipelineFallbackNotifier(options.msg);
+    const fallbackNotifier = new PipelineFallbackNotifier(options.msg, options.responseLanguage);
     const pipeline = new UserRequestPipeline({
         stages,
         stageNames: [

src/ai/unified-ai-response-pipeline.ts

@@ -167,7 +167,7 @@ export async function runUnifiedAiResponsePipeline(params: {
 }): Promise<void> {
     const {options, config, downloads, prepared, streamMessage, controller} = params;
     const state = createResponsePipelineState(options);
-    const fallbackNotifier = new PipelineFallbackNotifier(options.msg);
+    const fallbackNotifier = new PipelineFallbackNotifier(options.msg, options.responseLanguage);
     const adapter = getProviderAdapter(options.provider);
     let selectedToolNames: string[] = [];
     let filteredTools: unknown[] = [];

src/ai/user-request-pipeline/fallback-notifier-text.ts

@@ -1,27 +1,26 @@
+import {Localization} from "../../common/localization.js";
 import type {PipelineFallbackAction, PipelineStageName} from "./types.js";
 
-const DEFAULT_TEXT = "⚠️ I had to skip part of the request, but I can continue.";
-const NOTIFY_TEXT = "⚠️ I hit a problem and need to continue with a fallback.";
-const FAIL_TEXT = "⚠️ I could not finish this request.";
-const RAG_TEXT = "⚠️ Document retrieval failed, so I will answer without RAG.";
-const STT_TEXT = "⚠️ Speech transcription failed, so I will continue without the audio transcript.";
-const TTS_TEXT = "⚠️ Text-to-speech failed, so I will continue without audio output.";
-const TOOL_TEXT = "⚠️ Tool execution failed, so I will continue without that tool.";
-
-export function resolvePipelineFallbackText(stage: PipelineStageName, action: PipelineFallbackAction): string | undefined {
+export function resolvePipelineFallbackText(
+    stage: PipelineStageName,
+    action: PipelineFallbackAction,
+    locale?: string,
+): string | undefined {
     if (action === "continue_without_stage") return undefined;
-    if (action === "fail_request") return FAIL_TEXT;
+    if (action === "fail_request") return Localization.text("pipelineFallback.failRequest", {}, "⚠️ I could not finish this request.", locale);
 
     switch (stage) {
         case "speech_to_text":
-            return STT_TEXT;
+            return Localization.text("pipelineFallback.speechToText", {}, "⚠️ Speech transcription failed, so I will continue without the audio transcript.", locale);
         case "document_rag":
-            return RAG_TEXT;
+            return Localization.text("pipelineFallback.documentRag", {}, "⚠️ Document retrieval failed, so I will answer without RAG.", locale);
         case "tool_loop":
-            return TOOL_TEXT;
+            return Localization.text("pipelineFallback.toolLoop", {}, "⚠️ Tool execution failed, so I will continue without that tool.", locale);
         case "text_to_speech":
-            return TTS_TEXT;
+            return Localization.text("pipelineFallback.textToSpeech", {}, "⚠️ Text-to-speech failed, so I will continue without audio output.", locale);
         default:
-            return action === "notify_user" ? NOTIFY_TEXT : DEFAULT_TEXT;
+            return action === "notify_user"
+                ? Localization.text("pipelineFallback.notifyUser", {}, "⚠️ I hit a problem and need to continue with a fallback.", locale)
+                : Localization.text("pipelineFallback.generic", {}, "⚠️ I had to skip part of the request, but I can continue.", locale);
     }
 }

src/ai/user-request-pipeline/fallback-notifier.ts

@@ -1,4 +1,5 @@
 import type {Message} from "typescript-telegram-bot-api";
+import {Localization} from "../../common/localization.js";
 import {replyToMessage, logError} from "../../util/utils.js";
 import type {PipelineFallbackDecision} from "./fallback-executor.js";
 import {PipelineFallbackNotificationRegistry} from "./fallback-notifier-registry.js";
@@ -9,6 +10,7 @@ export class PipelineFallbackNotifier {
 
     constructor(
         private readonly sourceMessage: Message,
+        private readonly responseLanguage?: string,
         private readonly sendFallbackMessage: (text: string) => Promise<void> = async text => {
             await replyToMessage({
                 message: this.sourceMessage,
@@ -22,7 +24,10 @@ export class PipelineFallbackNotifier {
             return {notified: false};
         }
 
-        const text = resolvePipelineFallbackText(decision.stage, decision.action);
+        const locale = this.responseLanguage === "default"
+            ? Localization.currentLocale()
+            : Localization.normalizeLocale(this.responseLanguage) ?? Localization.currentLocale();
+        const text = resolvePipelineFallbackText(decision.stage, decision.action, locale);
         if (!text) {
             return {notified: false};
         }