import { describe, expect, it } from "vitest";
import { admissionDenialMessage, DEFAULT_ADMISSION_MESSAGES, parseAdmissionMessages } from "./admission-settings";

describe("admission message settings", () => {
  it("normalizes three independently configured denial messages", () => {
    const formData = new FormData();
    formData.set("registrationMessage", "  Register your account before joining.  ");
    formData.set("groupAccessDeniedMessage", "This group cannot access the server right now.");
    formData.set("vpnDeniedMessage", "VPN access requires a host-approved exception.");

    expect(parseAdmissionMessages(formData)).toEqual({
      registrationMessage: "Register your account before joining.",
      groupAccessDeniedMessage: "This group cannot access the server right now.",
      vpnDeniedMessage: "VPN access requires a host-approved exception.",
    });
  });

  it("selects the configured message for each admission denial reason", () => {
    expect(admissionDenialMessage("not_registered", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.registrationMessage);
    expect(admissionDenialMessage("group_access_disabled", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.groupAccessDeniedMessage);
    expect(admissionDenialMessage("anonymized_network_disallowed", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.vpnDeniedMessage);
  });

  it("rejects missing, short, overlong, or control-character messages", () => {
    for (const invalid of ["short", "a".repeat(501), "Denied\nInjected"] as const) {
      const formData = new FormData();
      formData.set("registrationMessage", DEFAULT_ADMISSION_MESSAGES.registrationMessage);
      formData.set("groupAccessDeniedMessage", DEFAULT_ADMISSION_MESSAGES.groupAccessDeniedMessage);
      formData.set("vpnDeniedMessage", invalid);
      expect(parseAdmissionMessages(formData)).toBeNull();
    }
  });
});