package com.xinquan.course.controller.client;


import com.alibaba.nacos.common.utils.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xinquan.common.core.constant.SecurityConstants;
import com.xinquan.common.core.domain.R;
import com.xinquan.common.core.utils.page.BeanUtils;
import com.xinquan.common.core.utils.page.CollUtils;
import com.xinquan.common.core.utils.page.PageDTO;
import com.xinquan.common.security.utils.SecurityUtils;
import com.xinquan.course.api.domain.Course;
import com.xinquan.course.api.domain.CourseDTO;
import com.xinquan.course.api.vo.CourseVO;
import com.xinquan.course.api.vo.StudyPageVO;
import com.xinquan.course.api.domain.CourseCategory;
import com.xinquan.course.domain.CourseChapter;
import com.xinquan.course.domain.CourseUserFavorite;
import com.xinquan.course.domain.vo.ClientCourseCategoryVO;
import com.xinquan.course.domain.vo.ClientCourseVO;
import com.xinquan.course.service.CourseCategoryService;
import com.xinquan.course.service.CourseChapterService;
import com.xinquan.course.service.CourseService;
import com.xinquan.course.service.CourseUserFavoriteService;
import com.xinquan.meditation.api.domain.Meditation;
import com.xinquan.meditation.api.feign.RemoteMeditationService;
import com.xinquan.system.api.RemoteBannerService;
import com.xinquan.system.api.domain.AppUser;
import com.xinquan.system.api.domain.AppUserCourse;
import com.xinquan.system.api.domain.AppUserViewingHistory;
import com.xinquan.system.api.domain.vo.AppUserVO;
import com.xinquan.system.api.domain.vo.BannerVO;
import com.xinquan.course.api.domain.OrderCourseVO;
import com.xinquan.user.api.feign.RemoteAppUserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

import lombok.RequiredArgsConstructor;
import org.springframework.data.domain.jaxb.SpringDataJaxb;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;

/**
 * <p>
 * 线上课程表 前端控制器
 * </p>
 *
 * @author mitao
 * @since 2024-08-21
 */
@Api(tags = {"用户端-课程相关接口"})
@RestController
@RequiredArgsConstructor
@RequestMapping("/client/course/course")
public class ClientCourseController {

    private final CourseCategoryService courseCategoryService;
    private final CourseService courseService;
    private final RemoteBannerService remoteBannerService;
    private final RemoteAppUserService remoteAppUserService;
    @Resource
    private CourseChapterService courseChapterService;
    @Resource
    private CourseUserFavoriteService courseUserFavoriteService;
    @Resource
    private RemoteMeditationService remoteMeditationService;

    /**
     * 远程调用 通过课程名字查询课程ids
     * @return
     */
    @PostMapping("/getCourseIdsByName/{name}")
    public R<List<Long>> getCourseIdsByName(@PathVariable("name") String name) {
        List<Long> collect = courseService.lambdaQuery().like(Course::getCourseTitle, name)
                .list().stream().map(Course::getId)
                .collect(Collectors.toList());
        return R.ok(collect);
    }

    @PostMapping("/courseManagementList")
    @ApiOperation(value = "课程管理列表-分页", tags = {"管理后台-课程管理"})
    public R<PageDTO<Course>> courseManagementList(@RequestBody CourseDTO courseDTO) {
        List<Long> longs = new ArrayList<>();
        LambdaQueryWrapper<Course> courseLambdaQueryWrapper = new LambdaQueryWrapper<>();
        courseLambdaQueryWrapper.like(StringUtils.isNotBlank(courseDTO.getTutor()), Course::getTutor, courseDTO.getTutor())
                .eq(Objects.nonNull(courseDTO.getCateId()), Course::getCateId, courseDTO.getCateId())
                .eq(Objects.nonNull(courseDTO.getCourseType()), Course::getCourseType, courseDTO.getCourseType())
                .eq(Objects.nonNull(courseDTO.getChargeType()), Course::getChargeType, courseDTO.getChargeType())
                .eq(Objects.nonNull(courseDTO.getListingStatus()), Course::getListingStatus, courseDTO.getListingStatus())
                .orderByDesc(Course::getSortNum);
        if (org.springframework.util.StringUtils.hasLength(courseDTO.getCourseTitle())){
            List<Long> collect = courseService.lambdaQuery().like(Course::getCourseTitle, courseDTO.getCourseTitle()).list()
                    .stream().map(Course::getId).collect(Collectors.toList());
            longs.addAll(collect);
            List<Long> collect1 = courseChapterService.lambdaQuery().like(CourseChapter::getChapterTitle, courseDTO.getCourseTitle()).list()
                    .stream().map(CourseChapter::getCourseId).collect(Collectors.toList());
            longs.addAll(collect1);
            if (longs.isEmpty()){
                longs.add(-1L);
            }
            courseLambdaQueryWrapper.in(Course::getId, longs);
        }
        Page<Course> page = courseService.page(new Page<>(courseDTO.getPageCurr(), courseDTO.getPageSize()), courseLambdaQueryWrapper);
        if (CollUtils.isEmpty(page.getRecords())) {
            return R.ok(PageDTO.empty(page));
        }
        for (Course record : page.getRecords()) {
            CourseCategory byId = courseCategoryService.getById(record.getCateId());
            if (Objects.nonNull(byId)){
                record.setCategoryName(byId.getName());
            }
            record.setUid(record.getId().toString());
            long count = courseChapterService.count(new LambdaQueryWrapper<CourseChapter>().eq(CourseChapter::getCourseId, record.getId()));
            record.setCourseChapterCount(count);
            // 查询收藏数量
            long count1 = courseUserFavoriteService.count(new LambdaQueryWrapper<CourseUserFavorite>()
                    .eq(CourseUserFavorite::getCourseId, record.getId()));
            record.setCollectCount(count1);
        }
        return R.ok(PageDTO.of(page, Course.class));
    }
    @PostMapping("/addCourse")
    @ApiOperation(value = "新增课程管理", notes = "管理后台-课程管理")
    public R addCourse(@RequestBody Course homeBackgroundMusic) {
        homeBackgroundMusic.setCreateBy(SecurityUtils.getUsername());
        homeBackgroundMusic.setCreateTime(LocalDateTime.now());
        return R.ok(courseService.save(homeBackgroundMusic));
    }
    @GetMapping("/detailCourse")
    @ApiOperation(value = "查看详情课程管理", notes = "管理后台-课程管理")
    public R<Course> detailCourse(String uid) {
        return R.ok(courseService.getById(uid));
    }
    @GetMapping("/updateState")
    @ApiOperation(value = "修改课程上下架状态", notes = "管理后台-课程管理")
    public R updateState(String uid) {
        Course byId = courseService.getById(uid);
        if (byId.getListingStatus() == 1){
            byId.setListingStatus(2);
        }else {
            byId.setListingStatus(1);
        }
        return R.ok();
    }
    @PostMapping("/updateCourse")
    @ApiOperation(value = "修改课程管理", notes = "管理后台-课程管理")
    public R updateCourse(@RequestBody Course homeBackgroundMusic) {
        homeBackgroundMusic.setUpdateBy(SecurityUtils.getUsername());
        homeBackgroundMusic.setUpdateTime(LocalDateTime.now());
        return R.ok(courseService.updateById(homeBackgroundMusic));
    }
    @PostMapping("/deleteCourse")
    @ApiOperation(value = "批量删除", notes = "管理后台-课程管理")
    public R deleteCourse(String ids) {
        return R.ok(courseService.removeBatchByIds(Arrays.asList(ids.split(","))));
    }



    @PostMapping("/cateList")
    public R<List<CourseCategory>> cateList() {
        List<CourseCategory> list = courseCategoryService.list();
        for (CourseCategory courseCategory : list) {
            courseCategory.setUid(courseCategory.getId().toString());
        }
        return R.ok(list);
    }
    @PostMapping("/courseList")
    public R<PageDTO<Course>> courseList(@RequestBody CourseDTO courseDTO) {
        Page<Course> page = courseService.lambdaQuery()
                .like(StringUtils.isNotBlank(courseDTO.getCourseTitle()), Course::getCourseTitle, courseDTO.getCourseTitle())
                .like(StringUtils.isNotBlank(courseDTO.getTutor()), Course::getTutor, courseDTO.getTutor())
                .eq(Objects.nonNull(courseDTO.getCateId()), Course::getCateId, courseDTO.getCateId())
                .eq(Objects.nonNull(courseDTO.getCourseType()), Course::getCourseType, courseDTO.getCourseType())
                .orderByDesc(Course::getSortNum)
                .page(new Page<>(courseDTO.getPageCurr(), courseDTO.getPageSize()));
        if (CollUtils.isEmpty(page.getRecords())) {
            return R.ok(PageDTO.empty(page));
        }
        for (Course record : page.getRecords()) {
            CourseCategory byId = courseCategoryService.getById(record.getCateId());
            if (Objects.nonNull(byId)){
                record.setCategoryName(byId.getName());
            }
            record.setUid(record.getId().toString());
        }
        return R.ok(PageDTO.of(page, Course.class));
    }
    @PostMapping("/myCollect")
    @ApiOperation(value = "我的收藏")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "state", value = "1冥想 2课程", dataType = "Integer", required = true),
            @ApiImplicitParam(name = "pageCurr", value = "分页参数，当前页码", dataType = "Integer", required = true),
            @ApiImplicitParam(name = "pageSize", value = "分页参数，每页数量", dataType = "Integer", required = true)
    })
    public R<PageDTO<OrderCourseVO>> myCollect(@RequestParam(value = "state")Integer state,
                                               @RequestParam(value = "pageCurr")Integer pageCurr,
                                               @RequestParam(value = "pageSize")Integer pageSize) {
        Long userId = SecurityUtils.getUserId();
        if (userId == 0)return R.tokenError("登录失效");
        switch (state){
            case 1:
                Page<Meditation> data = remoteMeditationService.getMeditationById(pageCurr, pageSize)
                        .getData();
                for (Meditation meditation : data.getRecords()) {

                }
                break;
            case 2:
                Page<CourseUserFavorite> page = courseUserFavoriteService.lambdaQuery()
                        .eq(CourseUserFavorite::getAppUserId, userId)
                        .page(new Page<>(pageCurr, pageSize));
                PageDTO<OrderCourseVO> courseChapterPageDTO = PageDTO.of(page, OrderCourseVO.class);
                for (CourseUserFavorite record : page.getRecords()) {

                }
                break;
        }
        return R.ok();
    }
    @PostMapping("/collectCourse")
    @ApiOperation(value = "收藏/取消课程")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "课程id", name = "id", required = true, dataType = "Long"),
    })
    public R collectCourse(@RequestParam(value = "id")Long id) {
        Long userId = SecurityUtils.getUserId();
        if (userId == 0)return R.tokenError("登录失效");
        CourseUserFavorite one = courseUserFavoriteService.lambdaQuery()
                .eq(CourseUserFavorite::getAppUserId, userId)
                .eq(CourseUserFavorite::getCourseId, id).one();
        if (one==null){
            // 收藏课程
            CourseUserFavorite courseUserFavorite = new CourseUserFavorite();
            courseUserFavorite.setAppUserId(userId);
            courseUserFavorite.setCourseId(id);
            courseUserFavoriteService.save(courseUserFavorite);
        }else{
            // 取消收藏
            courseUserFavoriteService.removeById(one);
        }
        return R.ok();
    }


    /**
     * 远程调用 根据课程id查询课程信息
     *
     * @return 课程分类列表
     */
    @PostMapping("/getCourseByCourseId/{courseId}")
    public R<OrderCourseVO> getCourseCategoryList(@RequestBody OrderCourseVO req) {
        Course byId = courseService.getById(req.getBusinessId());
        List<AppUser> data = remoteAppUserService.getUserByCourseId(req.getBusinessId()).getData();
        if (data!=null){
            req.setCount(data.size());
            req.setCourseTitle(byId.getCourseTitle());
            req.setDescription(byId.getDescription());
            req.setGeneralPrice(byId.getGeneralPrice());
            req.setIosPrice(byId.getIosPrice());
            req.setCoverUrl(byId.getCoverUrl());
        }
        return R.ok(req);
    }

    /**
     * 获取轮播图列表
     *
     * @return 轮播图列表
     */
    @GetMapping("/getBannerList")
    @ApiOperation(value = "获取轮播图列表")
    public R<List<BannerVO>> getBannerList() {
        return remoteBannerService.getBannerList(SecurityConstants.INNER);
    }

    /**
     * 获取课程分类列表
     *
     * @return 课程分类列表
     */
    @GetMapping("/getCourseCategoryList")
    @ApiOperation(value = "获取课程分类列表")
    public R<List<ClientCourseCategoryVO>> getCourseCategoryList() {
        return R.ok(courseCategoryService.getCourseCategoryList());
    }
    /**
     * 远程调用 根据分类id 获取分类对象
     *
     * @return 课程分类列表
     */
    @GetMapping("/getCategoryById/{id}")
    public R<CourseCategory> getCategoryById(@PathVariable("id") String id) {
        return R.ok(courseCategoryService.getById(id));
    }
    /**
     * 课程详情
     *
     * @return 课程详情
     */

    /**
     * 课程详情
     *
     * @return 课程详情
     */
    @PostMapping("/getPayCourseInfoById")
    @ApiOperation(value = "根据id获取课程详情")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "课程id", name = "id", required = true, dataType = "String"),
    })
    public R<ClientCourseVO> getPayCourseInfoById(@RequestParam(value = "id")Long id) {
        Long userId = SecurityUtils.getUserId();
        if (userId == 0)return R.tokenError("登录失效");
        AppUserVO data1 = remoteAppUserService.getCurrentUser().getData();

        Course byId = courseService.getById(id);
        ClientCourseVO clientCourseVO = new ClientCourseVO();
        BeanUtils.copyProperties(byId, clientCourseVO);
        if (data1.getVipExpireTime()!=null && data1.getVipExpireTime().isAfter(LocalDateTime.now())){
            clientCourseVO.setIsVip(1);
        }else{
            clientCourseVO.setIsVip(0);
        }
        // 查询用户是否已购买该课程
        // 查询章节
        List<CourseChapter> page = courseChapterService.lambdaQuery()
                .eq(CourseChapter::getCourseId, id)
                .orderByDesc(CourseChapter::getSortNum)
                .list();
        clientCourseVO.setIsBuy(0);
        // 查询学习人数和头像列表
        List<AppUser> data = remoteAppUserService.getUserByCourseId(id).getData();
        if (data!=null){
            clientCourseVO.setCount(data.size());
            if (data.size()>=5){
                clientCourseVO.setHeaders(data.stream().limit(5).map(AppUser::getAvatar).collect(Collectors.toList()));
            }else{
                clientCourseVO.setHeaders(data.stream().map(AppUser::getAvatar).collect(Collectors.toList()));
            }
            List<Long> collect = data.stream().map(AppUser::getUserId).collect(Collectors.toList());
            if (!collect.isEmpty()){
                if (collect.contains(userId)){
                    clientCourseVO.setIsBuy(1);
                }
            }
        }
        // 查询推荐课程
        List<Course> list = courseService.lambdaQuery().eq(Course::getCateId, byId.getCateId())
                .eq(Course::getCourseType,1)
                .eq(Course::getRecommend, 1).list();
        List<Course> courses = new ArrayList<>();
        // 随机获取两个课程
        if (CollUtils.isNotEmpty(list)) {
            int size = list.size();
            int index = (int) (Math.random() * size);
            if (size >= 2){
                for (int i = 0; i < 2; i++) {
                    courses.add(list.get(index));
                }
            }else{
                courses.add(list.get(index));
            }
        }
        clientCourseVO.setList2(courses);
        // 查询是否已收藏课程
        clientCourseVO.setIsCollect(courseUserFavoriteService.lambdaQuery()
                .eq(CourseUserFavorite::getAppUserId, userId)
                .eq(CourseUserFavorite::getCourseId, id) == null ? 2 : 1);
        return R.ok(clientCourseVO);
    }

    /**
     * 获取课程列表-分页
     *
     * @param courseTitle 课程标题
     * @param cateId      分类id
     * @param pageCurr    分页参数，当前页码
     * @param pageSize    分页参数，每页数量
     * @return 课程分页列表
     */
    @PostMapping("/getCoursePageList")
    @ApiOperation(value = "获取课程列表-分页")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "课程标题", name = "courseTitle", required = false, dataType = "String"),
            @ApiImplicitParam(value = "课程分类id", name = "cateId", required = false, dataType = "Long"),
            @ApiImplicitParam(value = "分页参数，当前页码", name = "pageCurr", required = true, dataType = "Integer"),
            @ApiImplicitParam(value = "分页参数，每页数量", name = "pageSize", required = true, dataType = "Integer")
    })
    public R<PageDTO<ClientCourseVO>> getCourseList(
            @RequestParam(defaultValue = "", value = "courseTitle", required = false) String courseTitle,
            @RequestParam(required = false) Long cateId,
            @RequestParam(value = "pageCurr", defaultValue = "1") Integer pageCurr,
            @RequestParam(value = "pageSize", defaultValue = "10") Integer pageSize) {
        return R.ok(courseService.getCoursePageList(courseTitle, cateId, pageCurr, pageSize));
    }
    @PostMapping("/studyPageByChapterId")
    @ApiOperation(value = "课程学习页面")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "章节id", name = "chapterId", required = true, dataType = "Long"),
            @ApiImplicitParam(value = "分页参数，当前页码", name = "pageCurr", required = true, dataType = "Integer"),
            @ApiImplicitParam(value = "分页参数，每页数量", name = "pageSize", required = true, dataType = "Integer")
    })
    public R<PageDTO<CourseChapter>> studyPageByChapterId(@RequestParam(value = "chapterId")Long chapterId,
                                                  @RequestParam(value = "pageCurr", defaultValue = "1") Integer pageCurr,
                                                  @RequestParam(value = "pageSize", defaultValue = "10") Integer pageSize) {
        CourseChapter byId1 = courseChapterService.getById(chapterId);
        Long id = byId1.getCourseId();
        // 查询章节
        Page<CourseChapter> page = courseChapterService.lambdaQuery()
                .eq(CourseChapter::getCourseId, id)
                .orderByDesc(CourseChapter::getSortNum)
                .page(new Page<>(pageCurr, pageSize));
        if (CollUtils.isEmpty(page.getRecords())) {
            PageDTO<CourseChapter> empty = PageDTO.empty(page);
            return R.ok(empty);
        }
        PageDTO<CourseChapter> courseChapterPageDTO = PageDTO.of(page, CourseChapter.class);
        if (CollUtils.isNotEmpty(courseChapterPageDTO.getList())) {
            for (CourseChapter courseChapter : courseChapterPageDTO.getList()) {
                AppUserViewingHistory data = remoteAppUserService.getCourseStudyHistory(courseChapter.getId()).getData();
                if (data!=null){
                    courseChapter.setMinuteLook(data.getMinuteLook());
                    courseChapter.setSecondLook(data.getSecondLook());
                    courseChapter.setIsOver(data.getIsOver());
                }
            }
        }
        return R.ok();
    }
    @PostMapping("/confirmOrder")
    @ApiOperation(value = "确认订单页面")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "课程id", name = "courseId", required = true, dataType = "Long")
    })
    public R<Course> studyPageByChapterId(@RequestParam(value = "courseId")Long courseId) {
        Long userId = SecurityUtils.getUserId();
        if (userId == 0)return R.tokenError("登录失效");
        Course byId = courseService.getById(courseId);
        return R.ok(byId);
    }
    @PostMapping("/successOrder")
    @ApiOperation(value = "支付成功页面")
    @ApiImplicitParams({
            @ApiImplicitParam(value = "课程id", name = "courseId", required = true, dataType = "Long")
    })
    public R<List<Course>> successOrder(@RequestParam(value = "courseId")Long courseId) {
        Long userId = SecurityUtils.getUserId();
        if (userId == 0)return R.tokenError("登录失效");
        Course byId = courseService.getById(courseId);
        List<Course> list = courseService.lambdaQuery().eq(Course::getCateId, byId.getCateId())
                .eq(Course::getCourseType, 1).list();
        for (Course course : list) {
            List<AppUser> data = remoteAppUserService.getUserByCourseId(courseId).getData();
            course.setCount(data.size());
        }
        List<Course> courses = new ArrayList<>();

        // 如果list集合数据大于2 随机获取两个返回
        if (CollUtils.isNotEmpty(list) && list.size() > 4) {
            int size = list.size();
            int index = (int) (Math.random() * size);
            for (int i = 0; i < 4; i++) {
                courses.add(list.get(index));
            }
            return R.ok(courses);
        }else {
            return R.ok(list);
        }
    }
    @GetMapping("/studyPage")
    @ApiOperation(value = "学习")

    public R<StudyPageVO> studyPage() {
        Long userId = SecurityUtils.getUserId();
        if (userId == 0)return R.tokenError("登录失效");
        StudyPageVO studyPageVO = new StudyPageVO();
        List<CourseVO> courseVOS = new ArrayList<>();

        PageDTO<AppUserCourse> data = remoteAppUserService.getPayCourse(1, 909999).getData();
        List<AppUserCourse> list = data.getList();
        if (CollUtils.isNotEmpty(list)) {
            List<Long> courseIds = list.stream().map(AppUserCourse::getCourseId).collect(Collectors.toList());
            List<Course> page = courseService.lambdaQuery()
                    .in(Course::getId, courseIds)
                    .list();
            for (Course course : page) {
                CourseVO courseVO = new CourseVO();
                BeanUtils.copyProperties(course, courseVO);
                courseVOS.add(courseVO);
                studyPageVO.setCourseList(courseVOS);
            }
        }
        // 查询两个相同类型的线上免费课程
        List<Course> freeCourseList = courseService.lambdaQuery()
                .eq(Course::getCourseType, 1)
                .eq(Course::getChargeType, 1)
                .list();
        // 随机获取两个
        if (CollUtils.isNotEmpty(freeCourseList) && freeCourseList.size() > 2) {
            int size = freeCourseList.size();
            int index = (int) (Math.random() * size);
            List<Course> courses = new ArrayList<>();
            for (int i = 0; i < 2; i++) {
                courses.add(freeCourseList.get(index));
            }
            studyPageVO.setFreeCourseList(courses);
        }else{
            studyPageVO.setFreeCourseList(freeCourseList);
        }
        return R.ok(studyPageVO);
    }
}