import { beforeEach, describe, expect, it, jest } from "@jest/globals";
import http2 from "http2";
import { EventEmitter } from "node:events";
import { AppleNotificationSender } from "../../../src/notifications/senders/AppleNotificationSender";

jest.mock("http2");

const sampleKeyBase64 = "LS0tLS1CRUdJTiBQUklWQVRFIEtFWS0tLS0tCk1JR1RBZ0VBTUJNR0J5cUdTTTQ5QWdFR0NDcUdTTTQ5QXdFSEJIa3dkd0lCQVFRZ3NybVNBWklhZ09mQ1A4c0IKV2kyQ0JYRzFPbzd2MWJpc3BJWkN3SXI0UkRlZ0NnWUlLb1pJemowREFRZWhSQU5DQUFUWkh4VjJ3UUpMTUJxKwp5YSt5ZkdpM2cyWlV2NmhyZmUrajA4eXRla1BIalhTMHF6Sm9WRUx6S0hhNkVMOVlBb1pEWEJ0QjZoK2ZHaFhlClNPY09OYmFmCi0tLS0tRU5EIFBSSVZBVEUgS0VZLS0tLS0K";

function mockHttp2Connect(status: number) {
  class MockClient extends EventEmitter {
    request = jest.fn((headers: any) => {
      const mockRequest: any = new EventEmitter();
      mockRequest.setEncoding = jest.fn();
      mockRequest.write = jest.fn();
      mockRequest.end = jest.fn(() => {
        setTimeout(() => {
          mockRequest.emit('response', { ':status': status });
        }, 10);
      });
      return mockRequest;
    });

    close() {};
  }

  (http2.connect as jest.Mock) = jest.fn(() => new MockClient());
}

describe("AppleNotificationSender", () => {
  let notificationSender: AppleNotificationSender;

  beforeEach(() => {
    notificationSender = new AppleNotificationSender();

    // Ensure that tests don't hit the server
    process.env = {
      ...process.env,
      APNS_KEY_ID: "1",
      APNS_TEAM_ID: "1",
      APNS_BUNDLE_ID: "dev.bchen.ProjectInter",
      APNS_PRIVATE_KEY: sampleKeyBase64,
    };
  });

  beforeEach(() => {
    mockHttp2Connect(200);
  });

  describe("reloadAPNsTokenIfTimePassed", () => {
    it("reloads the token if token hasn't been generated yet", async () => {
      notificationSender.reloadAPNsTokenIfTimePassed();
      expect(notificationSender.lastRefreshedTimeMs).toBeDefined();
    });

    it("doesn't reload the token if last refreshed time is recent", async () => {
      notificationSender.reloadAPNsTokenIfTimePassed();
      const lastRefreshedTimeMs = notificationSender.lastRefreshedTimeMs;

      notificationSender.reloadAPNsTokenIfTimePassed();
      // Expect no change to have occurred
      expect(lastRefreshedTimeMs).toEqual(notificationSender.lastRefreshedTimeMs);
    });
  });

});