package com.ruoyi.order.service.impl;

import com.ruoyi.order.api.model.TChargingOrderRefund;
import org.junit.jupiter.api.Test;

import java.math.BigDecimal;
import java.util.Arrays;
import java.util.Collections;

import static org.junit.jupiter.api.Assertions.assertEquals;

class TChargingOrderServiceImplRefundableAmountTest {

    @Test
    void completionRefundDoesNotReduceManualRefundableAmount() {
        TChargingOrderRefund completionRefund = refund("充电完成退款", "2.25");

        BigDecimal refundableAmount = TChargingOrderServiceImpl.calculateManualRefundableAmount(
                new BigDecimal("26.75"), Collections.singletonList(completionRefund));

        assertEquals(new BigDecimal("26.75"), refundableAmount);
    }

    @Test
    void onlySuccessfulManualRefundReducesManualRefundableAmount() {
        TChargingOrderRefund completionRefund = refund("充电完成退款", "2.25");
        TChargingOrderRefund manualRefund = refund("后台退款", "5.00");

        BigDecimal refundableAmount = TChargingOrderServiceImpl.calculateManualRefundableAmount(
                new BigDecimal("26.75"), Arrays.asList(completionRefund, manualRefund));

        assertEquals(new BigDecimal("21.75"), refundableAmount);
    }

    @Test
    void specialRefundForCombinedPaymentOnlyUsesThirdPartyAmount() {
        BigDecimal refundableAmount = TChargingOrderServiceImpl.calculateSpecialRefundableAmount(
                new BigDecimal("4.00"), new BigDecimal("2.00"), BigDecimal.ZERO);

        assertEquals(new BigDecimal("2.00"), refundableAmount);
    }

    @Test
    void previousThirdPartyRefundReducesSpecialRefundableAmount() {
        BigDecimal refundableAmount = TChargingOrderServiceImpl.calculateSpecialRefundableAmount(
                new BigDecimal("4.00"), new BigDecimal("2.00"), new BigDecimal("0.50"));

        assertEquals(new BigDecimal("1.50"), refundableAmount);
    }

    private TChargingOrderRefund refund(String title, String amount) {
        TChargingOrderRefund refund = new TChargingOrderRefund();
        refund.setRefundTitle(title);
        refund.setRefundAmount(new BigDecimal(amount));
        return refund;
    }
}