import {
  createProjectHealthSnapshot,
  filterLiveProjects,
  isCurrentLiveCheck,
  type ProjectHealthSnapshot,
} from "./project-health";

describe("project health snapshot", () => {
  const now = new Date("2026-07-10T12:00:00.000Z");
  const snapshot: ProjectHealthSnapshot = {
    checkedAt: "2026-07-10T11:55:00.000Z",
    projects: {
      online: {
        status: 200,
        contentType: "text/html; charset=utf-8",
        checkedAt: "2026-07-10T11:55:00.000Z",
      },
      redirect: {
        status: 301,
        contentType: "text/html",
        checkedAt: "2026-07-10T11:55:00.000Z",
      },
      stale: {
        status: 200,
        contentType: "text/html",
        checkedAt: "2026-07-10T10:30:00.000Z",
      },
    },
  };

  it("accepts only fresh final HTTP 200 HTML projects", () => {
    expect(isCurrentLiveCheck(snapshot.projects.online, now)).toBe(true);
    expect(isCurrentLiveCheck(snapshot.projects.redirect, now)).toBe(false);
    expect(isCurrentLiveCheck(snapshot.projects.stale, now)).toBe(false);

    expect(
      filterLiveProjects(
        [
          { id: "online", featured: true },
          { id: "redirect", featured: true },
          { id: "stale", featured: true },
          { id: "hidden", featured: false },
        ],
        snapshot,
        now,
      ).map((project) => project.id),
    ).toEqual(["online"]);
  });

  it("fails closed when the snapshot is absent or expired", () => {
    expect(
      filterLiveProjects([{ id: "online", featured: true }], null, now),
    ).toEqual([]);
    expect(
      filterLiveProjects(
        [{ id: "online", featured: true }],
        { ...snapshot, checkedAt: "2026-07-10T10:00:00.000Z" },
        now,
      ),
    ).toEqual([]);
  });

  it("creates a fresh health snapshot when the stored result is unavailable", async () => {
    const fetcher = jest.fn(async (url: string) => ({
      status: url.includes("online") ? 200 : 503,
      url,
      headers: new Headers({
        "content-type": url.includes("online") ? "text/html" : "text/plain",
      }),
      body: { cancel: jest.fn() },
    }));

    const result = await createProjectHealthSnapshot(
      [
        { id: "online", demoUrl: "https://online.example" },
        { id: "offline", demoUrl: "https://offline.example" },
      ],
      fetcher,
      new Date("2026-07-10T12:00:00.000Z"),
    );

    expect(result.projects.online.status).toBe(200);
    expect(result.projects.online.contentType).toBe("text/html");
    expect(result.projects.offline.status).toBe(503);
    expect(fetcher).toHaveBeenCalledTimes(2);
  });
});