import type { EntryOut } from '../../types/api';

export type EntryNode = EntryOut & { key: string; children?: EntryNode[] };

/** Дерево строк ОСВ по parent_entry_id; порядок — как пришёл (по row_number). */
export function buildEntryTree(entries: EntryOut[]): EntryNode[] {
	const nodes = new Map<string, EntryNode>();
	for (const entry of entries) nodes.set(entry.id, { ...entry, key: entry.id });
	const roots: EntryNode[] = [];
	for (const entry of entries) {
		const node = nodes.get(entry.id) as EntryNode;
		const parent = entry.parent_entry_id ? nodes.get(entry.parent_entry_id) : undefined;
		if (parent) {
			parent.children = [...(parent.children ?? []), node];
		} else {
			roots.push(node);
		}
	}
	return roots;
}