import { describe, expect, test } from "vitest";
import { mapFinTsTransaction } from "./fintsMap";

const salaryShift = {
  enabled: true,
  categoryNames: ["Gehalt & Besoldung"],
  dayThreshold: 25,
};

function baseTransaction(overrides: Partial<Parameters<typeof mapFinTsTransaction>[0]> = {}) {
  return {
    valueDate: new Date(2026, 5, 22),
    entryDate: new Date(2026, 5, 22),
    amount: -12.34,
    transactionType: "NMSC",
    bankReference: "",
    customerReference: "",
    bookingText: "Kartenzahlung",
    purpose: "REWE SAGT DANKE",
    remoteName: "REWE",
    ...overrides,
  };
}

describe("mapFinTsTransaction", () => {
  test("does not expose MT940 placeholder references as external references", () => {
    const placeholders = [
      "NONREF",
      "NOTPROVIDED",
      "NOT PROVIDED",
      "N/A",
      "POS 13",
      "POS-42",
      "POS_1155",
      "-",
      "",
    ];

    for (const placeholder of placeholders) {
      const mapped = mapFinTsTransaction(
        baseTransaction({
          bankReference: placeholder,
          customerReference: placeholder,
        }),
        [],
        salaryShift,
      );

      expect(mapped.externalRef).toBeUndefined();
    }
  });

  test("keeps real FinTS references for provider-level duplicate detection", () => {
    const mapped = mapFinTsTransaction(
      baseTransaction({
        bankReference: "5J2C21XL0470L56V/39761",
        customerReference: "NONREF",
      }),
      [],
      salaryShift,
    );

    expect(mapped.externalRef).toBe("5J2C21XL0470L56V/39761");
  });
});