refactor:将request结构体写到entity，并为video添加username字段

internal/video/video_entity.go

@@ -5,6 +5,7 @@ import "time"
 type Video struct {
 	ID          uint      `gorm:"primaryKey"`
 	AuthorID    uint      `gorm:"index;not null"`
+	Username    string    `gorm:"type:varchar(255);not null"`
 	Title       string    `gorm:"type:varchar(255);not null"`
 	Description string    `gorm:"type:varchar(255);"`
 	PlayURL     string    `gorm:"type:varchar(255);not null"`
@@ -12,3 +13,23 @@ type Video struct {
 	CreateTime  time.Time `gorm:"autoCreateTime"`
 	LikesCount  int64     `gorm:"column:likes_count;not null;default:0" json:"likes_count"`
 }
+
+type PublishVideoRequest struct {
+	Title       string `json:"title"`
+	Description string `json:"description"`
+	PlayURL     string `json:"play_url"`
+	CoverURL    string `json:"cover_url"`
+}
+
+type ListByAuthorIDRequest struct {
+	AuthorID uint `json:"author_id"`
+}
+
+type GetDetailRequest struct {
+	ID uint `json:"id"`
+}
+
+type UpdateLikesCountRequest struct {
+	ID         uint  `json:"id"`
+	LikesCount int64 `json:"likes_count"`
+}