package com.tourguide.modules.order.service;

import com.alibaba.fastjson.JSONObject;
import com.tourguide.common.huifu.properties.HuiFuProperties;
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 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 HuifuRefundCallbackServiceTest {
    private TourOrderMapper orderMapper;
    private HuifuRefundCallbackService callbackService;

    @BeforeEach
    void setUp() {
        HuiFuProperties properties = new HuiFuProperties();
        properties.setHuifuId("merchant-1");
        orderMapper = mock(TourOrderMapper.class);
        callbackService = new HuifuRefundCallbackService(properties, orderMapper);
    }

    @Test
    void successCallbackShouldCompleteRefundOnce() {
        TourOrder order = refundingOrder();
        when(orderMapper.selectByRefundOrderNoForUpdate("RF001")).thenReturn(order);

        boolean first = callbackService.handle(successBody());
        boolean duplicate = callbackService.handle(successBody());

        assertThat(first).isTrue();
        assertThat(duplicate).isFalse();
        assertThat(order.getRefundStatus()).isEqualTo(RefundStatus.REFUNDED.getCode());
        assertThat(order.getStatus()).isEqualTo(OrderStatus.REFUNDED.getCode());
        assertThat(order.getRefundTime()).isNotNull();
        verify(orderMapper).updateById(order);
    }

    @Test
    void failedCallbackShouldRecordFailureWithoutCompletingRefund() {
        TourOrder order = refundingOrder();
        when(orderMapper.selectByRefundOrderNoForUpdate("RF001")).thenReturn(order);
        JSONObject body = successBody();
        body.put("refund_stat", "F");

        boolean completed = callbackService.handle(body);

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

    @Test
    void duplicateSuccessCallbackShouldNotUpdateAgain() {
        TourOrder order = refundingOrder();
        order.setRefundStatus(RefundStatus.REFUNDED.getCode());
        when(orderMapper.selectByRefundOrderNoForUpdate("RF001")).thenReturn(order);

        boolean completed = callbackService.handle(successBody());

        assertThat(completed).isFalse();
        verify(orderMapper, never()).updateById(order);
    }

    @Test
    void nestedSuccessCallbackShouldCompleteOrder() {
        TourOrder order = refundingOrder();
        when(orderMapper.selectByRefundOrderNoForUpdate("RF001")).thenReturn(order);
        JSONObject data = successBody();
        JSONObject body = new JSONObject();
        body.put("data", data);

        assertThat(callbackService.handle(body)).isTrue();
        assertThat(order.getStatus()).isEqualTo(OrderStatus.REFUNDED.getCode());
    }

    @Test
    void partialSuccessCallbackShouldKeepRefundingBalance() {
        TourOrder order = refundingOrder();
        order.setRefundAmount(new BigDecimal("20.00"));
        when(orderMapper.selectByRefundOrderNoForUpdate("RF001")).thenReturn(order);
        JSONObject body = successBody();
        body.put("ord_amt", "20.00");

        assertThat(callbackService.handle(body)).isTrue();
        assertThat(order.getRefundedAmount()).isEqualByComparingTo("20.00");
        assertThat(order.getRefundStatus()).isEqualTo(RefundStatus.PARTIAL.getCode());
        assertThat(order.getStatus()).isEqualTo(OrderStatus.CANCELLED.getCode());
    }

    @Test
    void followUpSuccessCallbackShouldCompleteRemainingRefund() {
        TourOrder order = refundingOrder();
        order.setRefundAmount(new BigDecimal("16.00"));
        order.setRefundedAmount(new BigDecimal("20.00"));
        when(orderMapper.selectByRefundOrderNoForUpdate("RF001")).thenReturn(order);
        JSONObject body = successBody();
        body.put("ord_amt", "16.00");

        assertThat(callbackService.handle(body)).isTrue();
        assertThat(order.getRefundedAmount()).isEqualByComparingTo("36.00");
        assertThat(order.getRefundStatus()).isEqualTo(RefundStatus.REFUNDED.getCode());
        assertThat(order.getStatus()).isEqualTo(OrderStatus.REFUNDED.getCode());
    }

    private TourOrder refundingOrder() {
        TourOrder order = new TourOrder();
        order.setRefundOrderNo("RF001");
        order.setRefundStatus(RefundStatus.REFUNDING.getCode());
        order.setRefundAmount(new BigDecimal("36.00"));
        order.setPaymentAmount(new BigDecimal("36.00"));
        return order;
    }

    private JSONObject successBody() {
        JSONObject body = new JSONObject();
        body.put("req_seq_id", "RF001");
        body.put("huifu_id", "merchant-1");
        body.put("refund_stat", "S");
        body.put("ord_amt", "36.00");
        body.put("end_time", "20260803180000");
        return body;
    }
}