import type { ResourceConfig } from "../../../react-openapi";
import type { TxnFieldConfigs } from "../types";

export function buildTxnFieldConfigs(resources: ResourceConfig[]): TxnFieldConfigs | null {
  const expensesRes = resources.find((r) => r.name === "expenses");
  const entitiesRes = resources.find((r) => r.name === "entities");
  const accountsRes = resources.find((r) => r.name === "accounts");
  const find = (res: ResourceConfig | undefined, name: string) => res?.fields.find((f) => f.name === name);
  const entity = find(expensesRes, "entity");
  const amount = find(expensesRes, "amount");
  const account = find(expensesRes, "account");
  const occurredAt = find(expensesRes, "occurred_at");
  const logo = find(entitiesRes, "logo");
  if (!entity || !amount || !account || !occurredAt || !logo) return null;
  return {
    entity,
    amount,
    account,
    occurredAt,
    logo,
    formats: {
      entity: entitiesRes?.displayFormat ?? "{name}",
      account: accountsRes?.displayFormat ?? "{name}",
    },
  };
}