SnapOtter/tests/integration/tools/video/extract-subtitles.test.ts

import { ffmpegAvailable } from "@snapotter/media-engine";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { fixtures, readFixture } from "../../../fixtures/index.js";
import {
  buildTestApp,
  createMultipartPayload,
  loginAsAdmin,
  type TestApp,
} from "../../test-server.js";

const MKV = readFixture(fixtures.video.subs.mkv);
const MP4 = readFixture(fixtures.video.tiny("mp4"));

let testApp: TestApp;
let adminToken: string;

beforeAll(async () => {
  testApp = await buildTestApp();
  adminToken = await loginAsAdmin(testApp.app);
}, 30_000);

afterAll(async () => {
  await testApp.cleanup();
}, 10_000);

describe.skipIf(!ffmpegAvailable())("extract-subtitles (requires ffmpeg)", () => {
  it("extracts the subtitle track from an MKV with embedded subs", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "tiny-subs.mkv", contentType: "video/x-matroska", content: MKV },
      { name: "settings", content: JSON.stringify({}) },
    ]);
    const res = await testApp.app.inject({
      method: "POST",
      url: "/api/v1/tools/video/extract-subtitles",
      headers: { authorization: `Bearer ${adminToken}`, "content-type": contentType },
      body,
    });

    expect(res.statusCode).toBe(200);
    const envelope = JSON.parse(res.body);
    expect(envelope.downloadUrl).toBeDefined();

    const dl = await testApp.app.inject({ method: "GET", url: envelope.downloadUrl });
    expect(dl.statusCode).toBe(200);

    const srtContent = dl.rawPayload.toString("utf8");
    expect(srtContent).toContain("SnapOtter subtitle one");
  }, 60_000);

  it("rejects a video with no subtitle track (422)", async () => {
    const { body, contentType } = createMultipartPayload([
      { name: "file", filename: "tiny.mp4", contentType: "video/mp4", content: MP4 },
      { name: "settings", content: JSON.stringify({}) },
    ]);
    const res = await testApp.app.inject({
      method: "POST",
      url: "/api/v1/tools/video/extract-subtitles",
      headers: { authorization: `Bearer ${adminToken}`, "content-type": contentType },
      body,
    });

    expect(res.statusCode).toBe(422);
    const parsed = JSON.parse(res.body);
    expect(parsed.details).toMatch(/no subtitle track/i);
  }, 60_000);
});