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awei
271
bbs-go/server/internal/services/user_like_service.go
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271
bbs-go/server/internal/services/user_like_service.go
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package services
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import (
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"bbs-go/internal/models/constants"
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"bbs-go/internal/pkg/event"
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"errors"
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"github.com/mlogclub/simple/common/dates"
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"github.com/mlogclub/simple/sqls"
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"github.com/mlogclub/simple/web/params"
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"gorm.io/gorm"
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"bbs-go/internal/models"
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"bbs-go/internal/repositories"
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)
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var UserLikeService = newUserLikeService()
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func newUserLikeService() *userLikeService {
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return &userLikeService{}
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}
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type userLikeService struct {
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}
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func (s *userLikeService) Get(id int64) *models.UserLike {
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return repositories.UserLikeRepository.Get(sqls.DB(), id)
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}
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func (s *userLikeService) Take(where ...interface{}) *models.UserLike {
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return repositories.UserLikeRepository.Take(sqls.DB(), where...)
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}
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func (s *userLikeService) Find(cnd *sqls.Cnd) []models.UserLike {
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return repositories.UserLikeRepository.Find(sqls.DB(), cnd)
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}
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func (s *userLikeService) FindOne(cnd *sqls.Cnd) *models.UserLike {
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return repositories.UserLikeRepository.FindOne(sqls.DB(), cnd)
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}
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func (s *userLikeService) FindPageByParams(params *params.QueryParams) (list []models.UserLike, paging *sqls.Paging) {
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return repositories.UserLikeRepository.FindPageByParams(sqls.DB(), params)
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}
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func (s *userLikeService) FindPageByCnd(cnd *sqls.Cnd) (list []models.UserLike, paging *sqls.Paging) {
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return repositories.UserLikeRepository.FindPageByCnd(sqls.DB(), cnd)
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}
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func (s *userLikeService) Create(t *models.UserLike) error {
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return repositories.UserLikeRepository.Create(sqls.DB(), t)
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}
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func (s *userLikeService) Update(t *models.UserLike) error {
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return repositories.UserLikeRepository.Update(sqls.DB(), t)
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}
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func (s *userLikeService) Updates(id int64, columns map[string]interface{}) error {
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return repositories.UserLikeRepository.Updates(sqls.DB(), id, columns)
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}
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func (s *userLikeService) UpdateColumn(id int64, name string, value interface{}) error {
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return repositories.UserLikeRepository.UpdateColumn(sqls.DB(), id, name, value)
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}
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func (s *userLikeService) Delete(id int64) {
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repositories.UserLikeRepository.Delete(sqls.DB(), id)
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}
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// 统计数量
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func (s *userLikeService) Count(entityType string, entityId int64) int64 {
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var count int64 = 0
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sqls.DB().Model(&models.UserLike{}).Where("entity_id = ?", entityId).Where("entity_type = ?", entityType).Count(&count)
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return count
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}
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// 最近点赞
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func (s *userLikeService) Recent(entityType string, entityId int64, count int) []models.UserLike {
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return s.Find(sqls.NewCnd().Eq("entity_id", entityId).Eq("entity_type", entityType).Desc("id").Limit(count))
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}
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// Exists 是否点赞
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func (s *userLikeService) Exists(userId int64, entityType string, entityId int64) bool {
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return repositories.UserLikeRepository.FindOne(sqls.DB(), sqls.NewCnd().Eq("user_id", userId).
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Eq("entity_id", entityId).Eq("entity_type", entityType)) != nil
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}
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// 是否点赞，返回已点赞实体编号
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func (s *userLikeService) IsLiked(userId int64, entityType string, entityIds []int64) (likedEntityIds []int64) {
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list := repositories.UserLikeRepository.Find(sqls.DB(), sqls.NewCnd().Eq("user_id", userId).
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In("entity_id", entityIds).Eq("entity_type", entityType))
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for _, like := range list {
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likedEntityIds = append(likedEntityIds, like.EntityId)
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}
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return
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}
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// TopicLike 话题点赞
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func (s *userLikeService) TopicLike(userId int64, topicId int64) error {
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topic := repositories.TopicRepository.Get(sqls.DB(), topicId)
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if topic == nil || topic.Status != constants.StatusOk {
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return errors.New("话题不存在")
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}
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if err := sqls.DB().Transaction(func(tx *gorm.DB) error {
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if err := s.like(tx, userId, constants.EntityTopic, topicId); err != nil {
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return err
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}
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// 更新点赞数
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return tx.Exec("update t_topic set like_count = like_count + 1 where id = ?", topicId).Error
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}); err != nil {
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return err
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}
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// 发送事件
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event.Send(event.UserLikeEvent{
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UserId: userId,
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EntityId: topicId,
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EntityType: constants.EntityTopic,
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})
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return nil
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}
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func (s *userLikeService) TopicUnLike(userId int64, topicId int64) error {
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topic := repositories.TopicRepository.Get(sqls.DB(), topicId)
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if topic == nil || topic.Status != constants.StatusOk {
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return errors.New("话题不存在")
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}
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if err := sqls.DB().Transaction(func(tx *gorm.DB) error {
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if err := s.unlike(tx, userId, constants.EntityTopic, topicId); err != nil {
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return err
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}
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// 更新点赞数
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return repositories.TopicRepository.UpdateColumn(tx, topicId, "like_count", gorm.Expr("like_count - 1"))
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}); err != nil {
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return err
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}
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// 发送事件
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event.Send(event.UserUnLikeEvent{
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UserId: userId,
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EntityId: topicId,
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EntityType: constants.EntityTopic,
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})
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return nil
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}
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func (s *userLikeService) ArticleLike(userId int64, articleId int64) error {
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article := repositories.ArticleRepository.Get(sqls.DB(), articleId)
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if article == nil || article.Status != constants.StatusOk {
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return errors.New("文章不存在")
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}
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if err := sqls.DB().Transaction(func(tx *gorm.DB) error {
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if err := s.like(tx, userId, constants.EntityArticle, articleId); err != nil {
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return err
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}
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// 更新点赞数
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return repositories.ArticleRepository.UpdateColumn(tx, articleId, "like_count", gorm.Expr("like_count - 1"))
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}); err != nil {
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return err
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}
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// 发送事件
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event.Send(event.UserLikeEvent{
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UserId: userId,
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EntityId: articleId,
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EntityType: constants.EntityArticle,
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})
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return nil
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}
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func (s *userLikeService) ArticleUnLike(userId int64, articleId int64) error {
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article := repositories.ArticleRepository.Get(sqls.DB(), articleId)
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if article == nil || article.Status != constants.StatusOk {
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return errors.New("文章不存在")
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}
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if err := sqls.DB().Transaction(func(tx *gorm.DB) error {
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if err := s.unlike(tx, userId, constants.EntityArticle, articleId); err != nil {
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return err
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}
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// 更新点赞数
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return repositories.ArticleRepository.UpdateColumn(tx, articleId, "like_count", gorm.Expr("like_count - 1"))
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}); err != nil {
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return err
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}
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// 发送事件
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event.Send(event.UserUnLikeEvent{
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UserId: userId,
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EntityId: articleId,
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EntityType: constants.EntityArticle,
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})
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return nil
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}
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// CommentLike 话题点赞
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func (s *userLikeService) CommentLike(userId int64, commentId int64) error {
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comment := repositories.CommentRepository.Get(sqls.DB(), commentId)
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if comment == nil || comment.Status != constants.StatusOk {
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return errors.New("评论不存在")
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}
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if err := sqls.DB().Transaction(func(tx *gorm.DB) error {
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if err := s.like(tx, userId, constants.EntityComment, commentId); err != nil {
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return err
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}
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// 更新点赞数
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return repositories.CommentRepository.UpdateColumn(tx, commentId, "like_count", gorm.Expr("like_count + 1"))
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}); err != nil {
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return err
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}
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// 发送事件
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event.Send(event.UserLikeEvent{
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UserId: userId,
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EntityId: commentId,
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EntityType: constants.EntityComment,
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})
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return nil
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}
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// CommentLike 话题点赞
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func (s *userLikeService) CommentUnLike(userId int64, commentId int64) error {
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comment := repositories.CommentRepository.Get(sqls.DB(), commentId)
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if comment == nil || comment.Status != constants.StatusOk {
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return errors.New("评论不存在")
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}
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if err := sqls.DB().Transaction(func(tx *gorm.DB) error {
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if err := s.unlike(tx, userId, constants.EntityComment, commentId); err != nil {
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return err
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}
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// 更新点赞数
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return repositories.CommentRepository.UpdateColumn(tx, commentId, "like_count", gorm.Expr("like_count - 1"))
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}); err != nil {
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return err
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}
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// 发送事件
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event.Send(event.UserUnLikeEvent{
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UserId: userId,
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EntityId: commentId,
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EntityType: constants.EntityComment,
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})
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return nil
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}
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func (s *userLikeService) like(tx *gorm.DB, userId int64, entityType string, entityId int64) error {
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// 判断是否已经点赞了
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if s.Exists(userId, entityType, entityId) {
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return errors.New("已点赞")
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}
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// 点赞
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return repositories.UserLikeRepository.Create(tx, &models.UserLike{
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UserId: userId,
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EntityType: entityType,
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EntityId: entityId,
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CreateTime: dates.NowTimestamp(),
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})
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}
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func (s userLikeService) unlike(tx *gorm.DB, userId int64, entityType string, entityId int64) error {
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return tx.Delete(&models.UserLike{}, "user_id = ? and entity_id = ? and entity_type = ?", userId, entityId, entityType).Error
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}
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