refactor: consolidate reply/media helpers

src/telegram/voice.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { resolveTelegramVoiceSend } from "./voice.js";
+
+describe("resolveTelegramVoiceSend", () => {
+  it("skips voice when wantsVoice is false", () => {
+    const logFallback = vi.fn();
+    const result = resolveTelegramVoiceSend({
+      wantsVoice: false,
+      contentType: "audio/ogg",
+      fileName: "voice.ogg",
+      logFallback,
+    });
+    expect(result.useVoice).toBe(false);
+    expect(logFallback).not.toHaveBeenCalled();
+  });
+
+  it("logs fallback for incompatible media", () => {
+    const logFallback = vi.fn();
+    const result = resolveTelegramVoiceSend({
+      wantsVoice: true,
+      contentType: "audio/mpeg",
+      fileName: "track.mp3",
+      logFallback,
+    });
+    expect(result.useVoice).toBe(false);
+    expect(logFallback).toHaveBeenCalledWith(
+      "Telegram voice requested but media is audio/mpeg (track.mp3); sending as audio file instead.",
+    );
+  });
+
+  it("keeps voice when compatible", () => {
+    const logFallback = vi.fn();
+    const result = resolveTelegramVoiceSend({
+      wantsVoice: true,
+      contentType: "audio/ogg",
+      fileName: "voice.ogg",
+      logFallback,
+    });
+    expect(result.useVoice).toBe(true);
+    expect(logFallback).not.toHaveBeenCalled();
+  });
+});