import { describe, expect, test } from "bun:test";
import {
  checkDeploymentVersion,
  normalizeReloadPrefix,
  shouldReloadPath,
} from "@/lib/realtime/deployment-refresh";

describe("deployment refresh policy", () => {
  test("uses the first version as a baseline and detects later changes", () => {
    expect(checkDeploymentVersion(null, "build-a")).toEqual({
      version: "build-a",
      hasUpdate: false,
    });
    expect(checkDeploymentVersion("build-a", "build-a")).toEqual({
      version: "build-a",
      hasUpdate: false,
    });
    expect(checkDeploymentVersion("build-a", "build-b")).toEqual({
      version: "build-b",
      hasUpdate: true,
    });
  });

  test("matches global and pathname-prefix reloads", () => {
    expect(shouldReloadPath(null, "/profile")).toBeTrue();
    expect(shouldReloadPath("/admin", "/admin/backend")).toBeTrue();
    expect(shouldReloadPath("/form", "/profile")).toBeFalse();
  });

  test("normalizes valid prefixes and rejects invalid ones", () => {
    expect(normalizeReloadPrefix(null)).toBeNull();
    expect(normalizeReloadPrefix("  /admin  ")).toBe("/admin");
    expect(() => normalizeReloadPrefix("admin")).toThrow(
      "Reload path must start with /",
    );
  });
});