nexarch/web/dms-browser/lib/versionsApi.test.ts

import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import { fetchRevisions, restoreRevision, revisionContentUrl } from "./versionsApi";

const ORIGINAL_ENV = process.env;

beforeEach(() => {
  process.env = { ...ORIGINAL_ENV, NEXT_PUBLIC_VERSIONING_API_URL: "http://backend.test", NEXT_PUBLIC_USER_ID: "user-a" };
});

afterEach(() => {
  process.env = ORIGINAL_ENV;
  vi.restoreAllMocks();
});

describe("versionsApi", () => {
  it("fetchRevisions ruft den erwarteten Endpunkt mit caller-Parameter auf", async () => {
    const fetchMock = vi.fn().mockResolvedValue(new Response("[]", { status: 200 }));
    vi.stubGlobal("fetch", fetchMock);
    await fetchRevisions("doc-1");
    expect(fetchMock.mock.calls[0][0]).toBe("http://backend.test/documents/doc-1/revisions?caller=user-a");
  });

  it("revisionContentUrl baut die Download-URL fuer eine bestimmte Revision", () => {
    expect(revisionContentUrl("doc-1", "rev-2")).toBe(
      "http://backend.test/documents/doc-1/revisions/rev-2/content?caller=user-a"
    );
  });

  it("restoreRevision wirft bei 403 eine verstaendliche Fehlermeldung", async () => {
    vi.stubGlobal("fetch", vi.fn().mockResolvedValue(new Response(null, { status: 403 })));
    await expect(restoreRevision("doc-1", "rev-1")).rejects.toThrow(/Berechtigung/);
  });

  it("restoreRevision liefert die neue Revision bei Erfolg", async () => {
    const newRev = { id: "rev-2", revision_number: 2, size_bytes: 10, mime_type: "application/pdf", comment: "x", created_by: "user-a", created_at: "2026-09-17T00:00:00Z", accessible: true };
    vi.stubGlobal("fetch", vi.fn().mockResolvedValue(new Response(JSON.stringify(newRev), { status: 200, headers: { "Content-Type": "application/json" } })));
    await expect(restoreRevision("doc-1", "rev-1")).resolves.toEqual(newRev);
  });
});