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

describe("admission message settings", () => {
  it("normalizes independently configured denial templates with allowed variables", () => {
    const formData = validMessages();
    formData.set("registrationMessage", "  Register {player} before joining {group}.  ");
    formData.set("scheduledAccessDeniedMessage", "{player}, {group} may join from {next_start} to {next_end}.");

    expect(parseAdmissionMessages(formData)).toEqual({
      registrationMessage: "Register {player} before joining {group}.",
      groupAccessDeniedMessage: "{player} cannot access the server with {group}.",
      vpnDeniedMessage: "VPN access for {player} in {group} requires an exception.",
      scheduledAccessDeniedMessage: "{player}, {group} may join from {next_start} to {next_end}.",
    });
  });

  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("schedule_disallowed", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.scheduledAccessDeniedMessage);
    expect(admissionDenialMessage("anonymized_network_disallowed", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.vpnDeniedMessage);
  });

  it("renders static variables without evaluating expressions", () => {
    expect(renderAdmissionMessage("{player} uses {group}; next: {next_start}–{next_end}.", {
      player: "AlexMC",
      group: "Friday friends",
      next_start: "2026-08-07 20:00 UTC",
      next_end: "2026-08-07 23:59 UTC",
    })).toBe("AlexMC uses Friday friends; next: 2026-08-07 20:00 UTC–2026-08-07 23:59 UTC.");
  });

  it("rejects missing, short, overlong, control-character, or unsupported-variable messages", () => {
    for (const invalid of ["short", "a".repeat(501), "Denied\nInjected", "Denied for {next_start}.", "Denied for {unknown}."] as const) {
      const formData = validMessages();
      formData.set("vpnDeniedMessage", invalid);
      expect(parseAdmissionMessages(formData)).toBeNull();
    }
  });
});

function validMessages() {
  const formData = new FormData();
  formData.set("registrationMessage", "Register {player} before joining {group}.");
  formData.set("groupAccessDeniedMessage", "{player} cannot access the server with {group}.");
  formData.set("vpnDeniedMessage", "VPN access for {player} in {group} requires an exception.");
  formData.set("scheduledAccessDeniedMessage", "{group} may join from {next_start} to {next_end}.");
  return formData;
}