Update code to typescript

src/tts/azure.ts

@@ -0,0 +1,77 @@
+import * as sdk from "microsoft-cognitiveservices-speech-sdk";
+import { config } from "../config.js";
+import { BaseEngine, type VoiceParams } from "./BaseEngine.js";
+
+interface AzureVoiceMeta {
+  DisplayName: string;
+  ShortName: string;
+  Name: string;
+}
+
+export class AzureEngine extends BaseEngine {
+  protected override voices: Record<string, string> = {};
+
+  constructor() {
+    super("azure", "Microsoft Azure TTS", "wav");
+    void this.populateVoiceList();
+  }
+
+  override getDefaultVoice(): string {
+    return "aria";
+  }
+
+  override getSpeechFile(
+    text: string,
+    filepath: string,
+    voice: string = this.getDefaultVoice(),
+    _params: VoiceParams = {},
+  ): Promise<string> {
+    return new Promise((resolve, reject) => {
+      if (!config.AZURE_API_KEY || !config.AZURE_REGION) {
+        reject(new Error("AZURE_API_KEY and AZURE_REGION must be set"));
+        return;
+      }
+      const speechConfig = sdk.SpeechConfig.fromSubscription(
+        config.AZURE_API_KEY,
+        config.AZURE_REGION,
+      );
+      speechConfig.speechSynthesisOutputFormat = sdk.SpeechSynthesisOutputFormat.Riff24Khz16BitMonoPcm;
+      const internal = this.voices[voice] ?? this.voices[this.getDefaultVoice()];
+      if (internal) speechConfig.speechSynthesisVoiceName = internal;
+      const audioConfig = sdk.AudioConfig.fromAudioFileOutput(filepath);
+      const synthesizer = new sdk.SpeechSynthesizer(speechConfig, audioConfig);
+      synthesizer.speakTextAsync(
+        text,
+        (result) => {
+          synthesizer.close();
+          if (result) resolve(filepath);
+          else reject(new Error("Azure TTS returned no result"));
+        },
+        (error: unknown) => {
+          synthesizer.close();
+          reject(error instanceof Error ? error : new Error(String(error)));
+        },
+      );
+    });
+  }
+
+  private async populateVoiceList(): Promise<void> {
+    if (!config.AZURE_LIST_ENDPOINT || !config.AZURE_API_KEY) return;
+    try {
+      const res = await fetch(config.AZURE_LIST_ENDPOINT, {
+        headers: { "Ocp-Apim-Subscription-Key": config.AZURE_API_KEY },
+      });
+      const json = (await res.json()) as AzureVoiceMeta[];
+      for (const voice of json) {
+        const key = voice.DisplayName.toLowerCase();
+        if (this.voices[key]) {
+          if (voice.Name.includes("Neural")) this.voices[key] = voice.ShortName;
+        } else {
+          this.voices[key] = voice.ShortName;
+        }
+      }
+    } catch (err) {
+      console.error("Azure: failed to populate voice list:", err);
+    }
+  }
+}