import { isUuidLike } from "./reimbursementDisplay";

export type BusinessEntityType = "reimbursement" | "leave" | "attendance_correction" | "purchase_request" | "travel_request" | string | null | undefined;

const ENTITY_NOUN_LABELS: Record<string, string> = {
  reimbursement: "报销单",
  leave: "请假",
  attendance_correction: "考勤修正",
  purchase_request: "采购单",
  travel_request: "差旅单",
};

const ENTITY_SHORT_LABELS: Record<string, string> = {
  reimbursement: "报销",
  leave: "请假",
  attendance_correction: "考勤",
  purchase_request: "采购",
  travel_request: "差旅",
};

export function businessEntityLabel(entityType: BusinessEntityType, options: { noun?: boolean } = {}) {
  if (!entityType) {
    return options.noun ? "业务单据" : "业务";
  }
  const labels = options.noun ? ENTITY_NOUN_LABELS : ENTITY_SHORT_LABELS;
  return labels[entityType] ?? String(entityType);
}

export function compactBusinessReference(value: string | null | undefined) {
  const trimmed = value?.trim();
  if (!trimmed || isUuidLike(trimmed)) {
    return null;
  }
  return trimmed;
}

export function businessPrimaryLabel(input: {
  entityType: BusinessEntityType;
  reference?: string | null;
  title?: string | null;
  fallback?: string;
}) {
  const reference = compactBusinessReference(input.reference);
  if (reference) {
    return `${businessEntityLabel(input.entityType, { noun: true })} ${reference}`;
  }

  const title = input.title?.trim();
  if (title && !isUuidLike(title)) {
    return title;
  }

  return input.fallback ?? businessEntityLabel(input.entityType, { noun: true });
}

export function joinBusinessMeta(items: Array<string | null | undefined>) {
  return items.map((item) => item?.trim()).filter((item): item is string => Boolean(item)).join(" · ");
}