import assert from "node:assert/strict";
import { describe, it } from "node:test";
import {
  DEFAULT_HEADER_NAV,
  HEADER_NAV_BUILTIN_KEYS,
  isHeaderNavCustom,
  normalizeHeaderNav,
  type HeaderNavItem,
} from "./headerNav.ts";

describe("normalizeHeaderNav", () => {
  it("缺行/非法输入回落内置默认三项", () => {
    assert.deepEqual(normalizeHeaderNav(undefined), DEFAULT_HEADER_NAV);
    assert.deepEqual(normalizeHeaderNav(null), DEFAULT_HEADER_NAV);
    assert.deepEqual(normalizeHeaderNav("home"), DEFAULT_HEADER_NAV);
  });

  it("默认三项顺序与注册表一致", () => {
    assert.equal(DEFAULT_HEADER_NAV.length, 3);
    assert.deepEqual(
      DEFAULT_HEADER_NAV.map((i) => (i.type === "builtin" ? i.key : "")),
      [...HEADER_NAV_BUILTIN_KEYS],
    );
  });

  it("显式空数组表示全部隐藏，不回落默认", () => {
    assert.deepEqual(normalizeHeaderNav([]), []);
  });

  it("自定义顺序与内容原样保留", () => {
    const items: HeaderNavItem[] = [
      { type: "builtin", key: "library" },
      { type: "custom", label: "关于", url: "/p/about", new_tab: false },
      { type: "builtin", key: "home" },
      { type: "custom", label: "官网", url: "https://example.com", new_tab: true },
    ];
    assert.deepEqual(normalizeHeaderNav(items), items);
  });

  it("内置 key 去空白/小写容错、重复去重", () => {
    assert.deepEqual(
      normalizeHeaderNav([
        { type: "builtin", key: " HOME " },
        { type: "builtin", key: "home" },
        { type: "builtin", key: "library" },
      ]),
      [
        { type: "builtin", key: "home" },
        { type: "builtin", key: "library" },
      ],
    );
  });

  it("未知内置 key 与非法自定义项被剔除", () => {
    assert.deepEqual(
      normalizeHeaderNav([
        { type: "builtin", key: "nope" },
        { type: "custom", label: "", url: "/x" },
        { type: "custom", label: "坏地址", url: "javascript:alert(1)" },
        { type: "custom", label: "相对路径", url: "relative" },
        { type: "weird", key: "home" },
        { type: "custom", label: "合法", url: "/links" },
      ]),
      [{ type: "custom", label: "合法", url: "/links", new_tab: false }],
    );
  });

  it("自定义外链 new_tab 缺省为 true，站内为 false", () => {
    const got = normalizeHeaderNav([
      { type: "custom", label: "外链", url: "https://example.com" },
      { type: "custom", label: "站内", url: "/p/about" },
    ]);
    assert.equal(got.length, 2);
    assert.ok(got.every(isHeaderNavCustom));
    assert.equal((got[0] as { new_tab: boolean }).new_tab, true);
    assert.equal((got[1] as { new_tab: boolean }).new_tab, false);
  });
});