Initial backend repository commit.

Set up project files and add .gitignore to exclude local build/runtime artifacts.

Made-with: Cursor

internal/model/sticker.go

@@ -0,0 +1,33 @@
+package model
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"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 {
+	if s.ID == "" {
+		s.ID = uuid.New().String()
+	}
+	return nil
+}