import { describe, expect, test } from "bun:test";
import { parseHash, TAB_LABELS, TABS } from "./routes";

describe("parseHash", () => {
  test.each(["#home"])("reads %s", (hash) => {
    expect(parseHash(hash).tab).toBe(hash.slice(1) as never);
  });

  // The hash a browser produces varies: some paths write `#/gallery`, and copied links arrive
  // capitalised. All of them mean the same tab.
  test.each(["#/home", "#Home", "home"])("normalises %s", (hash) => {
    expect(parseHash(hash).tab).toBe("home");
  });

  // A refresh on the bare URL, and any hash left over from elsewhere, land somewhere valid rather
  // than rendering nothing.
  test.each(["", "#", "#nope", "#/../etc"])("falls back to home for %p", (hash) => {
    expect(parseHash(hash).tab).toBe("home");
  });
});

describe("nested routes", () => {
  test("a collection id rides along in param", () => {
    const route = parseHash("#home/0004853c-e097-4af9-b40b-0666594703cf");
    expect(route.tab).toBe("home");
    expect(route.param).toBe("0004853c-e097-4af9-b40b-0666594703cf");
  });

  test("a bare tab has no param", () => expect(parseHash("#home").param).toBeUndefined());

  // A trailing slash is what you get from hand-editing the address bar.
  test("a trailing slash is not a param", () => expect(parseHash("#home/").param).toBeUndefined());

  test("an unknown tab with a param still falls back", () => {
    expect(parseHash("#nope/123").tab).toBe("home");
  });
});

describe("tabs", () => {
  test("every tab has a label", () => {
    for (const tab of TABS) expect(TAB_LABELS[tab]).toBeTruthy();
  });

  test("the hash written for a tab parses back to it", () => {
    for (const tab of TABS) expect(parseHash(`#${tab}`).tab).toBe(tab);
  });
});