// @vitest-environment jsdom
//
// A failed download's explanation: the failure-catalog entry first, its category as the fallback
// (E11.5 S1). The second case runs the REAL i18next with the real locales, because the fallback is
// i18next's list-key lookup, not code of ours — an older client meeting a detail it has no copy for
// must still say the category, not print a key.
import { describe, expect, it } from "vitest";
import i18n from "../i18n";
import { failCopyKeys } from "./downloadFailure";

describe("failCopyKeys", () => {
  it("puts a catalog entry before its category, and is the category alone without one", () => {
    expect(
      failCopyKeys({ error_code: "login_required", error_detail: "facebook.login_wall" }, "body"),
    ).toEqual([
      "downloads.errors.fail.catalog.facebook.login_wall.body",
      "downloads.errors.fail.cat.login_required.body",
      "downloads.errors.fail.cat.unknown.body",
    ]);
    expect(failCopyKeys({ error_code: "network", error_detail: null }, "short")).toEqual([
      "downloads.errors.fail.cat.network.short",
      "downloads.errors.fail.cat.unknown.short",
    ]);
    expect(failCopyKeys({ error_code: null, error_detail: null }, "short")).toEqual([
      "downloads.errors.fail.cat.unknown.short",
    ]);
  });

  it("reads the entry's copy, and the category's for an entry this client does not know", async () => {
    await i18n.changeLanguage("en");
    expect(
      i18n.t(
        failCopyKeys(
          { error_code: "login_required", error_detail: "facebook.login_wall" },
          "short",
        ),
      ),
    ).toBe("Facebook sign-in required");
    expect(
      i18n.t(
        failCopyKeys({ error_code: "login_required", error_detail: "facebook.newer" }, "short"),
      ),
    ).toBe("Sign-in required");
    // A category this client has no copy for (a newer backend): the generic sentence, never a key.
    expect(i18n.t(failCopyKeys({ error_code: "rate_limited", error_detail: null }, "short"))).toBe(
      "Download failed",
    );
  });
});