package com.tourguide.modules.order.service;

import com.tourguide.modules.operation.service.PlatformSettingsService;
import com.tourguide.modules.order.domain.OrderStatus;
import com.tourguide.modules.order.domain.RefundStatus;
import com.tourguide.modules.order.entity.TourOrder;
import com.tourguide.modules.order.mapper.TourOrderMapper;
import com.tourguide.modules.order.payment.PaymentRefundGateway;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import java.math.BigDecimal;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

class OrderAutoRefundServiceTest {
    private TourOrderMapper orderMapper;
    private PaymentRefundGateway paymentRefundGateway;
    private OrderAutoRefundService autoRefundService;

    @BeforeEach
    void setUp() {
        orderMapper = mock(TourOrderMapper.class);
        paymentRefundGateway = mock(PaymentRefundGateway.class);
        autoRefundService = new OrderAutoRefundService(
                orderMapper, mock(PlatformSettingsService.class), paymentRefundGateway);
    }

    @Test
    void shouldRefundActualPaymentAmountAfterClaimingOrder() {
        TourOrder order = paidCancelledOrder();
        when(orderMapper.claimUnacceptedOrderForRefund(9L)).thenReturn(1);
        when(orderMapper.selectById(9L)).thenReturn(order);
        when(paymentRefundGateway.refund(order, new BigDecimal("36.00"))).thenReturn("LOCALRF001");

        autoRefundService.refundIfStillUnaccepted(9L);

        assertThat(order.getStatus()).isEqualTo(OrderStatus.CANCELLED.getCode());
        assertThat(order.getRefundStatus()).isEqualTo(RefundStatus.REFUNDED.getCode());
        assertThat(order.getRefundAmount()).isEqualByComparingTo("36.00");
        assertThat(order.getRefundOrderNo()).isEqualTo("LOCALRF001");
        assertThat(order.getRefundMethod()).isEqualTo("WECHAT");
        assertThat(order.getRefundTime()).isNotNull();
        verify(orderMapper).updateById(order);
    }

    @Test
    void shouldSkipRefundWhenOrderWasAlreadyAccepted() {
        when(orderMapper.claimUnacceptedOrderForRefund(9L)).thenReturn(0);

        autoRefundService.refundIfStillUnaccepted(9L);

        verify(orderMapper, never()).selectById(9L);
        verify(paymentRefundGateway, never()).refund(org.mockito.ArgumentMatchers.any(),
                org.mockito.ArgumentMatchers.any());
    }

    @Test
    void shouldRecordFailureWhenPaymentGatewayIsUnavailable() {
        TourOrder order = paidCancelledOrder();
        when(orderMapper.claimUnacceptedOrderForRefund(9L)).thenReturn(1);
        when(orderMapper.selectById(9L)).thenReturn(order);
        when(paymentRefundGateway.refund(order, new BigDecimal("36.00")))
                .thenThrow(new IllegalStateException("not configured"));

        autoRefundService.refundIfStillUnaccepted(9L);

        assertThat(order.getRefundStatus()).isEqualTo(RefundStatus.REFUND_FAILED.getCode());
        verify(orderMapper).updateById(order);
    }

    private TourOrder paidCancelledOrder() {
        TourOrder order = new TourOrder();
        order.setId(9L);
        order.setOrderNo("MJ202607290009");
        order.setStatus(OrderStatus.CANCELLED.getCode());
        order.setPaymentMethod("WECHAT");
        order.setPaymentOrderNo("LOCALMJ202607290009");
        order.setAmount(new BigDecimal("40.00"));
        order.setPaymentAmount(new BigDecimal("36.00"));
        return order;
    }
}