const mockCharge = jest.fn();
jest.mock('../../app/core/midtrans.service', () => ({
    getCoreApi: jest.fn().mockReturnValue({
        charge: mockCharge,
        transaction: { status: jest.fn(), refund: jest.fn(), cancel: jest.fn() }
    }),
    getSnap: jest.fn().mockReturnValue({ createTransaction: jest.fn() })
}));

const mockOrderFindByPk = jest.fn();
jest.mock('../../models/migration', () => ({
    Order: { findByPk: mockOrderFindByPk, findOne: jest.fn(), update: jest.fn() },
    Payment: { findOne: jest.fn(), create: jest.fn(), update: jest.fn() }
}));

const paylaterService = require('../../app/modules/paylater/services/paylater.service');

describe('PayLaterService', () => {
    beforeEach(() => {
        jest.clearAllMocks();
    });

    it('should create an akulaku transaction successfully', async () => {
        const payload = { order_id: 'u-123', external_id: 'INV-AK-001', amount: 1000000 };
        mockCharge.mockResolvedValue({ status_code: '201' });
        await paylaterService.createTransaction(payload, 'akulaku');
        expect(mockCharge).toHaveBeenCalledWith(expect.objectContaining({
            payment_type: 'akulaku'
        }));
    });

    it('should fallback to order total if amount is missing', async () => {
        const payload = { order_id: 'u-123', external_id: 'INV-AK-001' };
        mockOrderFindByPk.mockResolvedValue({ total: 1000000 });
        mockCharge.mockResolvedValue({ status_code: '201' });

        await paylaterService.createTransaction(payload, 'kredivo');

        expect(mockOrderFindByPk).toHaveBeenCalledWith('u-123');
        expect(mockCharge).toHaveBeenCalledWith(expect.objectContaining({
            transaction_details: expect.objectContaining({
                gross_amount: 1000000
            })
        }));
    });
});