import { describe, expect, it } from "vitest";

import {
  normalizeRecentlyViewed,
  upsertRecentlyViewed,
  type RecentlyViewedItem,
} from "@/lib/recentlyViewed";

const baseItem: RecentlyViewedItem = {
  type: "wanfa-route",
  id: "route-1",
  title: "亲子玩水",
  image: "https://example.test/route-1.jpg",
  visitedAt: 100,
};

describe("recently viewed data", () => {
  it("filters invalid records and sorts valid records by latest visit", () => {
    expect(
      normalizeRecentlyViewed([
        { ...baseItem, visitedAt: 100 },
        { ...baseItem, id: "route-2", visitedAt: 300 },
        { id: "missing-title", type: "wanfa-route", visitedAt: 200 },
        "invalid",
      ]),
    ).toEqual([
      { ...baseItem, id: "route-2", visitedAt: 300 },
      baseItem,
    ]);
  });

  it("updates an existing ID, puts it first, and keeps at most five records", () => {
    const existing = Array.from({ length: 5 }, (_, index) => ({
      ...baseItem,
      id: `route-${index}`,
      visitedAt: index,
    }));

    expect(
      upsertRecentlyViewed(existing, {
        ...baseItem,
        id: "route-3",
        title: "更新后的路线",
        visitedAt: 10,
      }),
    ).toEqual([
      { ...baseItem, id: "route-3", title: "更新后的路线", visitedAt: 10 },
      { ...baseItem, id: "route-4", visitedAt: 4 },
      { ...baseItem, id: "route-2", visitedAt: 2 },
      { ...baseItem, id: "route-1", visitedAt: 1 },
      { ...baseItem, id: "route-0", visitedAt: 0 },
    ]);
  });
});