feat:添加热榜功能并添加了增加热度的方法。

backend/internal/video/comment_handler.go

@@ -10,10 +10,11 @@ import (
 type CommentHandler struct {
 	service        *CommentService
 	accountService *account.AccountService
+	videoService   *VideoService
 }
 
-func NewCommentHandler(service *CommentService, accountService *account.AccountService) *CommentHandler {
-	return &CommentHandler{service: service, accountService: accountService}
+func NewCommentHandler(service *CommentService, accountService *account.AccountService, videoService *VideoService) *CommentHandler {
+	return &CommentHandler{service: service, accountService: accountService, videoService: videoService}
 }
 func (h *CommentHandler) PublishComment(c *gin.Context) {
 	var req PublishCommentRequest
@@ -49,6 +50,10 @@ func (h *CommentHandler) PublishComment(c *gin.Context) {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
+	if err := h.videoService.UpdatePopularity(c.Request.Context(), req.VideoID, 1); err != nil {
+		c.JSON(500, gin.H{"error": err.Error()})
+		return
+	}
 	c.JSON(200, gin.H{"message": "comment published successfully"})
 }
 
@@ -71,6 +76,7 @@ func (h *CommentHandler) DeleteComment(c *gin.Context) {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
+
 	c.JSON(200, gin.H{"message": "comment deleted successfully"})
 }
 

backend/internal/video/like_entity.go

@@ -12,7 +12,3 @@ type Like struct {
 type LikeRequest struct {
 	VideoID uint `json:"video_id"`
 }
-
-type LikeHandler struct {
-	service *LikeService
-}

backend/internal/video/like_handler.go

@@ -6,8 +6,13 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-func NewLikeHandler(service *LikeService) *LikeHandler {
-	return &LikeHandler{service: service}
+type LikeHandler struct {
+	service      *LikeService
+	videoService *VideoService
+}
+
+func NewLikeHandler(service *LikeService, videoService *VideoService) *LikeHandler {
+	return &LikeHandler{service: service, videoService: videoService}
 }
 
 func (lh *LikeHandler) Like(c *gin.Context) {
@@ -35,6 +40,10 @@ func (lh *LikeHandler) Like(c *gin.Context) {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	}
+	if err := lh.videoService.UpdatePopularity(c.Request.Context(), req.VideoID, 1); err != nil {
+		c.JSON(500, gin.H{"error": err.Error()})
+		return
+	}
 	c.JSON(200, gin.H{"message": "like success"})
 }
 
@@ -63,6 +72,10 @@ func (lh *LikeHandler) Unlike(c *gin.Context) {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	}
+	if err := lh.videoService.UpdatePopularity(c.Request.Context(), req.VideoID, -1); err != nil {
+		c.JSON(500, gin.H{"error": err.Error()})
+		return
+	}
 	c.JSON(200, gin.H{"message": "unlike success"})
 }
 

backend/internal/video/video_entity.go

@@ -12,6 +12,7 @@ type Video struct {
 	CoverURL    string    `gorm:"type:varchar(255);not null" json:"cover_url"`
 	CreateTime  time.Time `gorm:"autoCreateTime" json:"create_time"`
 	LikesCount  int64     `gorm:"column:likes_count;not null;default:0" json:"likes_count"`
+	Popularity  int64     `gorm:"column:popularity;not null;default:0" json:"popularity"`
 }
 
 type PublishVideoRequest struct {

backend/internal/video/video_repo.go

@@ -68,3 +68,12 @@ func (vr *VideoRepository) IsExist(ctx context.Context, id uint) (bool, error) {
 	}
 	return true, nil
 }
+
+func (vr *VideoRepository) UpdatePopularity(ctx context.Context, id uint, change int64) error {
+	if err := vr.db.WithContext(ctx).Model(&Video{}).
+		Where("id = ?", id).
+		Update("popularity", gorm.Expr("popularity + ?", change)).Error; err != nil {
+		return err
+	}
+	return nil
+}

backend/internal/video/video_service.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"strconv"
 	"strings"
 	"time"
 
@@ -166,3 +167,26 @@ func (vs *VideoService) UpdateLikesCount(ctx context.Context, id uint, likesCoun
 	}
 	return nil
 }
+
+func (vs *VideoService) UpdatePopularity(ctx context.Context, id uint, change int64) error {
+	if err := vs.repo.UpdatePopularity(ctx, id, change); err != nil {
+		return err
+	}
+
+	if vs.cache != nil {
+		// 1) 详情缓存：直接失效（最简单靠谱）
+		_ = vs.cache.Del(context.Background(), fmt.Sprintf("video:detail:id=%d", id))
+
+		// 2) 热榜：写到“时间窗ZSET”，不要用 detail key
+		now := time.Now().UTC().Truncate(time.Minute)
+		windowKey := "hot:video:1m:" + now.Format("200601021504")
+		member := strconv.FormatUint(uint64(id), 10)
+
+		opCtx, cancel := context.WithTimeout(ctx, 50*time.Millisecond)
+		defer cancel()
+
+		_ = vs.cache.ZincrBy(opCtx, windowKey, member, float64(change))
+		_ = vs.cache.Expire(opCtx, windowKey, 2*time.Hour)
+	}
+	return nil
+}