/**
 * @file Tests for CloneProgress: a queued clone shows its place in the
 * server's clone queue, a running one git's phase, percent and speed with a
 * bar, and nothing shows before the server knows the token. Also that
 * `newCloneToken` makes a token the server accepts.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

import { describe, it, expect, vi, beforeEach } from "vitest";
import { render, screen } from "@testing-library/react";
import "../../../i18n";

vi.mock("../../../lib/api", () => ({
  api: { lanes: { cloneProgress: vi.fn() } },
}));

import { api, type CloneProgressView } from "../../../lib/api";
import { CloneProgress, newCloneToken } from "../CloneProgress";

const base: CloneProgressView = {
  state: "running",
  position: null,
  running: 2,
  waiting: 1,
  limit: 2,
  phase: null,
  label: null,
  percent: null,
  detail: null,
};

describe("CloneProgress", () => {
  // Braces: a function returned from beforeEach is run as its teardown.
  beforeEach(() => {
    vi.mocked(api.lanes.cloneProgress).mockReset();
  });

  it("shows the clone's place in the queue while it waits", async () => {
    vi.mocked(api.lanes.cloneProgress).mockResolvedValue({
      ...base,
      state: "queued",
      position: 1,
    });
    render(<CloneProgress token="t" />);
    expect(await screen.findByTestId("clone-progress")).toHaveTextContent(
      "Waiting in the clone queue — #1 of 1 (2/2 clones running)"
    );
  });

  it("shows git's phase, percent and speed with a bar while it runs", async () => {
    vi.mocked(api.lanes.cloneProgress).mockResolvedValue({
      ...base,
      phase: "receiving",
      label: "Receiving objects",
      percent: 45,
      detail: "450/1000, 120.50 MiB | 5.20 MiB/s",
    });
    render(<CloneProgress token="t" />);
    const line = await screen.findByTestId("clone-progress");
    expect(line).toHaveTextContent("Downloading 45%");
    expect(line).toHaveTextContent("120.50 MiB | 5.20 MiB/s");
    expect(screen.getByRole("progressbar")).toHaveAttribute("aria-valuenow", "45");
  });

  it("shows nothing while the server does not know the token yet", async () => {
    vi.mocked(api.lanes.cloneProgress).mockImplementation(() =>
      Promise.reject(Object.assign(new Error("no such clone"), { code: "ENOTFOUND" }))
    );
    render(<CloneProgress token="t" />);
    await new Promise((r) => setTimeout(r, 20));
    expect(screen.queryByTestId("clone-progress")).toBeNull();
  });

  it("makes tokens the server accepts", () => {
    const a = newCloneToken();
    expect(a).toMatch(/^[A-Za-z0-9_-]{16,64}$/);
    expect(newCloneToken()).not.toBe(a);
  });
});