backend/internal/model/sticker.go

package model

import (
	"time"

	"gorm.io/gorm"
)

// UserSticker 用户自定义表情
type UserSticker struct {
	ID        string    `json:"id" gorm:"type:varchar(36);primaryKey"`
	UserID    string    `json:"user_id" gorm:"type:varchar(36);not null;index:idx_user_stickers"`
	URL       string    `json:"url" gorm:"type:text;not null"`
	Width     int       `json:"width" gorm:"default:0"`
	Height    int       `json:"height" gorm:"default:0"`
	SortOrder int       `json:"sort_order" gorm:"default:0;index:idx_user_stickers_sort"`
	CreatedAt time.Time `json:"created_at" gorm:"autoCreateTime"`
	UpdatedAt time.Time `json:"updated_at" gorm:"autoUpdateTime"`
}

// TableName 表名
func (UserSticker) TableName() string {
	return "user_stickers"
}

// BeforeCreate 创建前生成UUID
func (s *UserSticker) BeforeCreate(tx *gorm.DB) error {
	SetUUIDIfEmpty(&s.ID)
	return nil
}