import { describe, it, expect, vi, beforeEach } from "vitest";

vi.mock("@/src/lib/stripe", () => ({
  stripe: { refunds: { create: vi.fn() } },
}));

import { refundStripePayment } from "@/src/lib/stripe-refund";
import { stripe } from "@/src/lib/stripe";

beforeEach(() => {
  vi.clearAllMocks();
  vi.mocked(stripe.refunds.create).mockResolvedValue({ id: "re_1", amount: 2900 } as never);
});

describe("refundStripePayment", () => {
  it("erstattet eine Direct Charge auf dem Studio-Account, ohne reverse_transfer", async () => {
    const result = await refundStripePayment({
      paymentIntentId: "pi_1",
      stripeAccountId: "acct_studio",
      amountCents: 2900,
      idempotencyKey: "refund-b1",
      refundApplicationFee: false,
    });

    expect(result).toEqual({ success: true, stripeRefundId: "re_1", amountRefundedCents: 2900 });
    expect(stripe.refunds.create).toHaveBeenCalledWith(
      { payment_intent: "pi_1", amount: 2900, refund_application_fee: false },
      { stripeAccount: "acct_studio", idempotencyKey: "refund-b1" }
    );
  });

  it("holt das Geld bei Altbuchungen per reverse_transfer vom Studio zurück", async () => {
    await refundStripePayment({
      paymentIntentId: "pi_1",
      stripeAccountId: null,
      refundApplicationFee: true,
    });

    expect(stripe.refunds.create).toHaveBeenCalledWith(
      { payment_intent: "pi_1", refund_application_fee: true, reverse_transfer: true },
      {}
    );
  });

  it("meldet einen Stripe-Fehler als Ergebnis statt zu werfen", async () => {
    vi.mocked(stripe.refunds.create).mockRejectedValue(new Error("insufficient balance"));

    const result = await refundStripePayment({
      paymentIntentId: "pi_1",
      stripeAccountId: "acct_studio",
      refundApplicationFee: false,
    });

    expect(result).toEqual({ success: false, error: "insufficient balance", definitive: false });
  });

  it("unterscheidet eine sichere Ablehnung von einem offenen Ausgang", async () => {
    const rejected = Object.assign(new Error("Charge already refunded"), {
      type: "StripeInvalidRequestError",
      code: "charge_already_refunded",
    });
    vi.mocked(stripe.refunds.create).mockRejectedValueOnce(rejected);
    const timeout = Object.assign(new Error("timeout"), { type: "StripeConnectionError" });
    vi.mocked(stripe.refunds.create).mockRejectedValueOnce(timeout);

    const params = {
      paymentIntentId: "pi_1",
      stripeAccountId: "acct",
      refundApplicationFee: false,
    };
    expect(await refundStripePayment(params)).toMatchObject({
      success: false,
      definitive: true,
      code: "charge_already_refunded",
    });
    expect(await refundStripePayment(params)).toMatchObject({ success: false, definitive: false });
  });
});