/**
 * Application initialization: access-denied logic and deep link routing.
 * Document lang/title are owned by TelegramProvider (all routes).
 */

"use client";

import { useEffect } from "react";
import { useAppStore } from "@/store/app-store";
import { RETRY_DELAY_MS } from "@/lib/constants";

export interface UseAppInitParams {
  /** Whether the user is allowed (localhost or has valid initData). */
  isAllowed: boolean;
  /** Telegram Mini App start_param (e.g. "duty" for current duty deep link). */
  startParam: string | undefined;
}

/**
 * Handles access denied when not allowed and routes to current duty view when opened via startParam=duty.
 */
export function useAppInit({ isAllowed, startParam }: UseAppInitParams): void {
  const setAccessDenied = useAppStore((s) => s.setAccessDenied);
  const setLoading = useAppStore((s) => s.setLoading);
  const setCurrentView = useAppStore((s) => s.setCurrentView);

  // When not allowed (no initData and not localhost), show access denied after delay.
  useEffect(() => {
    if (isAllowed) {
      setAccessDenied(false);
      return;
    }
    const id = setTimeout(() => {
      setAccessDenied(true);
      setLoading(false);
    }, RETRY_DELAY_MS);
    return () => clearTimeout(id);
  }, [isAllowed, setAccessDenied, setLoading]);

  // When opened via deep link startParam=duty, show current duty view first.
  useEffect(() => {
    if (startParam === "duty") setCurrentView("currentDuty");
  }, [startParam, setCurrentView]);
}