package com.tourguide.modules.order.service;

import com.tourguide.common.exception.BusinessException;
import com.tourguide.modules.order.domain.OrderStatus;
import com.tourguide.modules.order.dto.GuideOrderResponse;
import com.tourguide.modules.order.entity.TourOrder;
import com.tourguide.modules.order.mapper.TourOrderMapper;
import com.tourguide.modules.operation.entity.ScenicMeetingPoint;
import com.tourguide.modules.operation.mapper.ScenicMeetingPointMapper;
import com.tourguide.modules.operation.entity.ScenicPricing;
import com.tourguide.modules.operation.mapper.ScenicPricingMapper;
import com.tourguide.modules.user.entity.GuideReceivingSession;
import com.tourguide.modules.user.mapper.GuideRealtimeStatusMapper;
import com.tourguide.modules.user.mapper.GuideReceivingSessionMapper;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

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

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
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 GuideTourOrderServiceTest {
    private TourOrderMapper orderMapper;
    private GuideReceivingSessionMapper sessionMapper;
    private GuideRealtimeStatusMapper realtimeStatusMapper;
    private ScenicPricingMapper pricingMapper;
    private ScenicMeetingPointMapper meetingPointMapper;
    private GuideTourOrderService service;

    @BeforeEach
    void setUp() {
        orderMapper = mock(TourOrderMapper.class);
        sessionMapper = mock(GuideReceivingSessionMapper.class);
        realtimeStatusMapper = mock(GuideRealtimeStatusMapper.class);
        pricingMapper = mock(ScenicPricingMapper.class);
        meetingPointMapper = mock(ScenicMeetingPointMapper.class);
        service = new GuideTourOrderService(orderMapper, sessionMapper, realtimeStatusMapper,
                pricingMapper, meetingPointMapper);
    }

    @Test
    void shouldStartAllOrdersInReceivingSession() {
        TourOrder order = order(OrderStatus.PENDING_MEETING);
        GuideReceivingSession session = session("ASSIGNED");
        when(orderMapper.selectOne(any())).thenReturn(order);
        when(sessionMapper.selectForUpdate(20L, 8L)).thenReturn(session);
        when(sessionMapper.startSession(20L, 8L)).thenReturn(1);
        when(orderMapper.startSessionOrders(eq(20L), any())).thenReturn(2);

        GuideOrderResponse response = service.start(8L, 10L);

        assertThat(response.getStatus()).isEqualTo("serving");
        assertThat(response.getLectureStartTime()).isNotNull();
        assertThat(order.getArrivedAt()).isNotNull();
        verify(realtimeStatusMapper).disableReceiving(8L);
    }

    @Test
    void shouldTreatRepeatedStartAsSuccess() {
        TourOrder order = order(OrderStatus.IN_SERVICE);
        when(orderMapper.selectOne(any())).thenReturn(order);

        GuideOrderResponse response = service.start(8L, 10L);

        assertThat(response.getStatus()).isEqualTo("serving");
        verify(sessionMapper, never()).selectForUpdate(any(), any());
    }

    @Test
    void shouldExposePaymentAmountSeparatelyFromGuideEarningForHistoryOrder() {
        TourOrder order = order(OrderStatus.COMPLETED);
        order.setAmount(new BigDecimal("300.00"));
        order.setPaymentAmount(new BigDecimal("300.00"));
        order.setGuideEarningAmount(new BigDecimal("256.00"));
        when(orderMapper.selectOne(any())).thenReturn(order);

        GuideOrderResponse response = service.detail(8L, 10L);

        assertThat(response.getPaymentAmount()).isEqualByComparingTo("300.00");
        assertThat(response.getEarningAmount()).isEqualByComparingTo("256.00");
    }

    @Test
    void shouldUseConfiguredDurationForOrder() {
        TourOrder order = order(OrderStatus.COMPLETED);
        order.setServicePackageId(30L);
        ScenicPricing pricing = new ScenicPricing();
        pricing.setId(30L);
        pricing.setDurationMinutes(2);
        when(orderMapper.selectOne(any())).thenReturn(order);
        when(pricingMapper.selectById(30L)).thenReturn(pricing);

        GuideOrderResponse response = service.detail(8L, 10L);

        assertThat(response.getDurationMinutes()).isEqualTo(2);
    }

    @Test
    void shouldExposeMeetingPointCoordinatesForOrder() {
        TourOrder order = order(OrderStatus.COMPLETED);
        order.setScenicSpotId(11L);
        order.setMeetingPointId(12L);
        order.setMeetingPointName("景区正门");
        ScenicMeetingPoint point = new ScenicMeetingPoint();
        point.setId(12L);
        point.setScenicSpotId(11L);
        point.setPointName("景区正门");
        point.setAddress("景区东门");
        point.setLongitude(new BigDecimal("103.648278"));
        point.setLatitude(new BigDecimal("31.001472"));
        when(orderMapper.selectOne(any())).thenReturn(order);
        when(meetingPointMapper.selectBatchIds(any())).thenReturn(Collections.singletonList(point));

        GuideOrderResponse response = service.detail(8L, 10L);

        assertThat(response.getMeetingPointId()).isEqualTo(12L);
        assertThat(response.getMeetingPointAddress()).isEqualTo("景区东门");
        assertThat(response.getMeetingPointLongitude()).isEqualByComparingTo("103.648278");
        assertThat(response.getMeetingPointLatitude()).isEqualByComparingTo("31.001472");
    }

    @Test
    void shouldRejectOrderOutsidePendingMeetingState() {
        TourOrder order = order(OrderStatus.COMPLETED);
        when(orderMapper.selectOne(any())).thenReturn(order);

        assertThatThrownBy(() -> service.start(8L, 10L))
                .isInstanceOf(BusinessException.class)
                .hasMessage("当前订单不能开始讲解");
    }

    private TourOrder order(OrderStatus status) {
        TourOrder order = new TourOrder();
        order.setId(10L);
        order.setGuideId(8L);
        order.setReceivingSessionId(20L);
        order.setStatus(status.getCode());
        order.setPeopleCount(2);
        return order;
    }

    private GuideReceivingSession session(String status) {
        GuideReceivingSession session = new GuideReceivingSession();
        session.setId(20L);
        session.setGuideId(8L);
        session.setStatus(status);
        return session;
    }
}