package com.tcm.training.admin.app.home.service;

import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.tcm.training.admin.app.home.vo.AppHomeLiveCourseVO;
import com.tcm.training.admin.app.live.support.AppLiveCourseDisplaySupport;
import com.tcm.training.admin.live.entity.LiveCourse;
import com.tcm.training.admin.live.entity.LiveSession;
import com.tcm.training.admin.live.mapper.LiveCourseMapper;
import com.tcm.training.admin.live.mapper.LiveSessionMapper;
import org.apache.ibatis.builder.MapperBuilderAssistant;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import java.time.LocalDateTime;
import java.util.Arrays;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.when;

/**
 * APP 首页养生直播聚合服务测试。
 */
@ExtendWith(MockitoExtension.class)
class AppHomeLiveCourseServiceTest {

    @BeforeAll
    static void initLambdaCache() {
        MapperBuilderAssistant assistant = new MapperBuilderAssistant(new MybatisConfiguration(), "");
        TableInfoHelper.initTableInfo(assistant, LiveCourse.class);
        TableInfoHelper.initTableInfo(assistant, LiveSession.class);
    }

    @Mock
    private LiveCourseMapper liveCourseMapper;

    @Mock
    private LiveSessionMapper liveSessionMapper;

    private AppHomeLiveCourseService appHomeLiveCourseService;

    /**
     * 每个用例前重建被测首页服务。
     */
    @BeforeEach
    void setUp() {
        appHomeLiveCourseService = new AppHomeLiveCourseService(
                liveCourseMapper,
                liveSessionMapper,
                new AppLiveCourseDisplaySupport()
        );
    }

    /**
     * 首页课程状态应忽略历史残留的直播中场次，只认时间线上的当前有效场次。
     */
    @Test
    void listHomeLiveCoursesShouldIgnoreHistoricalLivingSession() {
        LiveCourse endedCourse = buildCourse(2L, "养生直播课程2");
        LiveCourse livingCourse = buildCourse(1L, "这里是养生功法直播间");
        LiveSession endedCourseStaleLiving = buildSession(2001L, 2L, LocalDateTime.now().minusDays(1),
                AppLiveCourseDisplaySupport.SESSION_STATUS_LIVING, "https://cdn.example/stale.m3u8");
        LiveSession endedCourseLatestEnded = buildSession(2002L, 2L, LocalDateTime.now().minusHours(2),
                AppLiveCourseDisplaySupport.SESSION_STATUS_ENDED, "https://cdn.example/ended.m3u8");
        endedCourseLatestEnded.setActualEndTime(LocalDateTime.now().minusHours(1));
        LiveSession livingCourseCurrent = buildSession(1001L, 1L, LocalDateTime.now().minusMinutes(5),
                AppLiveCourseDisplaySupport.SESSION_STATUS_LIVING, "https://cdn.example/current.m3u8");

        when(liveCourseMapper.selectList(any())).thenReturn(Arrays.asList(endedCourse, livingCourse));
        when(liveSessionMapper.selectList(any())).thenReturn(Arrays.asList(
                endedCourseStaleLiving,
                endedCourseLatestEnded,
                livingCourseCurrent
        ));

        List<AppHomeLiveCourseVO> cards = appHomeLiveCourseService.listHomeLiveCourses();

        assertEquals(2, cards.size());
        assertEquals(Long.valueOf(1L), cards.get(0).getCourseId());
        assertEquals("LIVING", cards.get(0).getDisplayStatus());
        assertEquals(Long.valueOf(1001L), cards.get(0).getCurrentSessionId());
        assertEquals("https://cdn.example/current.m3u8", cards.get(0).getVideoUrl());

        assertEquals(Long.valueOf(2L), cards.get(1).getCourseId());
        assertEquals("ENDED", cards.get(1).getDisplayStatus());
        assertNull(cards.get(1).getCurrentSessionId());
        assertNull(cards.get(1).getVideoUrl());
    }

    /**
     * 构造首页直播课程测试数据。
     */
    private LiveCourse buildCourse(Long courseId, String title) {
        LiveCourse course = new LiveCourse();
        course.setId(courseId);
        course.setTitle(title);
        course.setCoverImg("https://cdn.example/cover-" + courseId + ".png");
        course.setBannerImgs(Arrays.asList("https://cdn.example/live-" + courseId + ".png"));
        course.setStatus(1);
        course.setDeleted(0);
        return course;
    }

    /**
     * 构造首页直播场次测试数据。
     */
    private LiveSession buildSession(Long sessionId, Long courseId, LocalDateTime startTime, Integer liveStatus, String videoUrl) {
        LiveSession session = new LiveSession();
        session.setId(sessionId);
        session.setLiveCourseId(courseId);
        session.setStartTime(startTime);
        session.setLiveStatus(liveStatus);
        session.setVideoUrl(videoUrl);
        return session;
    }
}