export const readListVisit = (kind, id) => {
	try {
		return JSON.parse(sessionStorage.getItem(`list-visit:${kind}:${id ?? 'last'}`) || 'null');
	} catch { return null; }
};

export const rememberListVisit = (kind, id, url) => {
	const visit = { id: String(id), url };
	try {
		for (const key of [String(id), 'last']) sessionStorage.setItem(`list-visit:${kind}:${key}`, JSON.stringify(visit));
	} catch { /* Navigation remains available when browser storage is disabled. */ }
};

export const getListReturnUrl = (kind, id) => {
	const visit = readListVisit(kind, id);
	const base = `/${kind}`;
	return visit?.url === base || visit?.url?.startsWith(`${base}?`) ? visit.url : base;
};

export const positiveInteger = (value, fallback) => {
	const number = Number(value);
	return Number.isSafeInteger(number) && number > 0 ? number : fallback;
};

export const findItemPage = async ({ id, currentPage, pageSize, count, fetchPage, isCancelled = () => false }) => {
	for (let page = 1; page <= Math.ceil(count / pageSize); page++) {
		if (isCancelled()) return null;
		if (page === currentPage) continue;
		const result = await fetchPage(page);
		if (isCancelled()) return null;
		if (result.some((item) => String(item.id) === String(id))) return page;
	}
	return null;
};