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backend/src/services/piper.http.service.ts

@@ -0,0 +1,26 @@
+import axios from 'axios';
+import { getPiperUrl } from '../config.js';
+
+export interface PiperSynthesisParams {
+  text: string;
+  lang?: string;
+}
+
+class PiperHttpService {
+  async synthesize(params: PiperSynthesisParams): Promise<Buffer> {
+    const piperUrl = getPiperUrl();
+    if (!piperUrl) throw new Error('PIPER_URL not configured');
+
+    const speakerId = params.lang === 'en' ? 1 : 0;
+
+    const response = await axios.post(
+      `${piperUrl}/api/tts`,
+      { text: params.text, speaker_id: speakerId },
+      { responseType: 'arraybuffer', timeout: 30_000 },
+    );
+
+    return Buffer.from(response.data, 'binary');
+  }
+}
+
+export const piperService = new PiperHttpService();