import { describe, expect, test } from "bun:test";
import { countdown, pageTitle } from "../src/client/title.ts";

const start = +new Date(2026, 10, 5, 9, 0, 0);
const session = { startMs: start, targetSeconds: 25 * 60, tag: "Study" };

describe("browser tab title", () => {
  test("is the app name when no session runs", () => {
    expect(pageTitle(null, start)).toBe("Timelog");
  });

  test("shows the remaining time and tag while a session runs", () => {
    expect(pageTitle(session, start)).toBe("25:00 · Study — Timelog");
    expect(pageTitle(session, start + 61_500)).toBe("23:59 · Study — Timelog");
  });

  test("stops at 00:00 when the session is due", () => {
    expect(pageTitle(session, start + 26 * 60_000)).toBe("00:00 · Study — Timelog");
  });

  test("countdown rounds partial seconds up", () => {
    expect(countdown(1)).toBe("00:01");
    expect(countdown(120 * 60_000)).toBe("120:00");
    expect(countdown(-5)).toBe("00:00");
  });
});

test("redundant UI text is gone", async () => {
  const source = (await Bun.file("src/client/main.ts").text()).toLowerCase();
  for (const text of [
    "a quiet record of time", "local first", "forest csv / v1",
    "one session at a time", "make time count", "actual logged time",
  ]) expect(source).not.toContain(text);
});