import { gameAdmissionDenialReason } from "@minecraft-account-manager/auth";
import {
  admissionDenialMessage,
  renderAdmissionMessage,
  type AdmissionMessages,
} from "./admission-settings";
import {
  evaluateGroupSchedule,
  formatScheduleInstant,
  type WeeklyAccessWindow,
} from "./group-schedule";

interface EffectiveGroupPolicy {
  name: string;
  accessEnabled: boolean;
  anonymizedNetworksAllowed: boolean;
}

interface RegisteredPlayerAdmissionInput {
  group: EffectiveGroupPolicy | null;
  windows: WeeklyAccessWindow[];
  classification: "unknown" | "clear" | "vpn" | "proxy" | "hosting" | "tor";
  now: Date;
  player: string;
  messages: AdmissionMessages;
}

export function evaluateRegisteredPlayerAdmission(input: RegisteredPlayerAdmissionInput) {
  const schedule = evaluateGroupSchedule(input.windows, input.now);
  const reason = gameAdmissionDenialReason(input.group, input.classification, schedule.allowed);
  if (!reason) return { allowed: true as const, reason: null, message: null, nextWindow: null };
  return {
    allowed: false as const,
    reason,
    message: renderAdmissionMessage(admissionDenialMessage(reason, input.messages), {
      player: input.player,
      group: input.group?.name ?? "everyone",
      next_start: schedule.nextWindow ? formatScheduleInstant(schedule.nextWindow.start) : "unavailable",
      next_end: schedule.nextWindow ? formatScheduleInstant(schedule.nextWindow.end) : "unavailable",
    }),
    nextWindow: schedule.nextWindow,
  };
}