package com.tourguide.modules.user.service;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.tourguide.common.api.PageResponse;
import com.tourguide.modules.order.dto.VisitorOrderStatRow;
import com.tourguide.modules.order.mapper.TourOrderMapper;
import com.tourguide.modules.review.dto.VisitorReviewStatRow;
import com.tourguide.modules.review.mapper.OrderReviewMapper;
import com.tourguide.modules.user.dto.MiniUserDetailResponse;
import com.tourguide.modules.user.dto.MiniUserResponse;
import com.tourguide.modules.user.entity.MiniUser;
import com.tourguide.modules.user.mapper.MiniUserMapper;
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.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

class MiniUserServiceStatsTest {
    private MiniUserMapper userMapper;
    private TourOrderMapper orderMapper;
    private OrderReviewMapper reviewMapper;
    private MiniUserService userService;

    @BeforeEach
    void setUp() {
        userMapper = mock(MiniUserMapper.class);
        orderMapper = mock(TourOrderMapper.class);
        reviewMapper = mock(OrderReviewMapper.class);
        userService = new MiniUserService(userMapper, orderMapper, reviewMapper);
    }

    @Test
    void pageShouldReturnVisitorOrderCount() {
        MiniUser user = miniUser(7L);
        Page<MiniUser> page = new Page<MiniUser>(1, 10);
        page.setRecords(Collections.singletonList(user));
        page.setTotal(1L);
        when(userMapper.selectPage(any(), any())).thenReturn(page);
        when(orderMapper.selectVisitorOrderStats(any())).thenReturn(Collections.singletonList(orderStat(7L, 1L)));
        when(reviewMapper.selectVisitorReviewStats(any())).thenReturn(Collections.emptyList());

        PageResponse<MiniUserResponse> response = userService.page(1, 10, null, null, null, null);

        assertThat(response.getRecords()).hasSize(1);
        assertThat(response.getRecords().get(0).getOrderCount()).isEqualTo(1L);
    }

    @Test
    void detailShouldReturnVisitorConsumptionStats() {
        MiniUser user = miniUser(7L);
        when(userMapper.selectById(7L)).thenReturn(user);
        when(orderMapper.selectVisitorOrderStats(any())).thenReturn(Collections.singletonList(orderStat(7L, 1L)));
        when(reviewMapper.selectVisitorReviewStats(any())).thenReturn(Collections.singletonList(reviewStat(7L, 2L)));

        MiniUserDetailResponse response = userService.detail(7L);

        assertThat(response.getOrderCount()).isEqualTo(1L);
        assertThat(response.getTotalConsumption()).isEqualByComparingTo("36.00");
        assertThat(response.getReviewCount()).isEqualTo(2L);
    }

    private MiniUser miniUser(Long id) {
        MiniUser user = new MiniUser();
        user.setId(id);
        user.setUsername("mini_" + id);
        user.setNickname("Visitor " + id);
        user.setStatus(1);
        return user;
    }

    private VisitorOrderStatRow orderStat(Long visitorId, Long orderCount) {
        VisitorOrderStatRow row = new VisitorOrderStatRow();
        row.setVisitorId(visitorId);
        row.setOrderCount(orderCount);
        row.setTotalConsumption(new BigDecimal("36.00"));
        return row;
    }

    private VisitorReviewStatRow reviewStat(Long visitorId, Long reviewCount) {
        VisitorReviewStatRow row = new VisitorReviewStatRow();
        row.setVisitorId(visitorId);
        row.setReviewCount(reviewCount);
        return row;
    }
}