import { type InvestmentResourceMeta, readRetry } from "@/shared/api";

type SectionState = {
	error: boolean;
	hasData: boolean;
	loading: boolean;
	partial?: boolean;
	readRetry?: ReturnType<typeof readRetry>;
};

function hasSectionData(data: unknown) {
	return data !== undefined;
}

function section(query: {
	data: unknown;
	error?: unknown;
	isError: boolean;
	isFetching?: boolean;
	meta?: InvestmentResourceMeta;
	refetch?: () => Promise<unknown>;
}): SectionState {
	const isError = query.isError || query.meta?.lastAttempt.state === "failed";
	const hasData = hasSectionData(query.data);

	return {
		error: isError,
		hasData,
		loading: !hasData && !isError,
		partial: query.meta?.completeness === "incomplete",
		// Each section retries only its own GET, so sections recover independently.
		readRetry: query.refetch
			? readRetry([
					{
						error: query.error,
						isError: query.isError,
						isFetching: query.isFetching ?? false,
						refetch: query.refetch,
					},
				])
			: undefined,
	};
}

export { section, type SectionState };