fix

backend-old/internal/model/entity/category.go

@@ -0,0 +1,131 @@
+package entity
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// Category 分类实体
+type Category struct {
+	ID          uint           `json:"id" gorm:"primarykey"`
+	Name        string         `json:"name" gorm:"not null;size:100"`
+	Slug        string         `json:"slug" gorm:"uniqueIndex;not null;size:100"`
+	Description string         `json:"description" gorm:"type:text"`
+	ParentID    *uint          `json:"parent_id" gorm:"index"`
+	Color       string         `json:"color" gorm:"default:#3b82f6;size:7"`
+	CoverImage  string         `json:"cover_image" gorm:"size:500"`
+	Sort        int            `json:"sort" gorm:"default:0;index"`
+	SortOrder   int            `json:"sort_order" gorm:"default:0;index"`
+	IsActive    bool           `json:"is_active" gorm:"default:true;index"`
+	CreatedAt   time.Time      `json:"created_at"`
+	UpdatedAt   time.Time      `json:"updated_at"`
+	DeletedAt   gorm.DeletedAt `json:"deleted_at" gorm:"index"`
+
+	// 关联
+	Parent     *Category  `json:"parent,omitempty" gorm:"foreignKey:ParentID"`
+	Children   []Category `json:"children,omitempty" gorm:"foreignKey:ParentID"`
+	Photos     []Photo    `json:"photos,omitempty" gorm:"foreignKey:CategoryID"`
+	Albums     []Album    `json:"albums,omitempty" gorm:"foreignKey:CategoryID"`
+	PhotoCount int64      `json:"photo_count" gorm:"-"` // 照片数量，不存储在数据库中
+}
+
+// CategoryTree 分类树结构（用于前端显示）
+type CategoryTree struct {
+	ID          uint            `json:"id"`
+	Name        string          `json:"name"`
+	Slug        string          `json:"slug"`
+	Description string          `json:"description"`
+	ParentID    *uint           `json:"parent_id"`
+	Color       string          `json:"color"`
+	CoverImage  string          `json:"cover_image"`
+	Sort        int             `json:"sort"`
+	SortOrder   int             `json:"sort_order"`
+	IsActive    bool            `json:"is_active"`
+	PhotoCount  int64           `json:"photo_count"`
+	Children    []CategoryTree  `json:"children"`
+	CreatedAt   time.Time       `json:"created_at"`
+	UpdatedAt   time.Time       `json:"updated_at"`
+}
+
+// CategoryStats 分类统计信息
+type CategoryStats struct {
+	Total           int64            `json:"total"`            // 总分类数
+	Active          int64            `json:"active"`           // 活跃分类数
+	TopLevel        int64            `json:"top_level"`        // 顶级分类数
+	TotalCategories int64            `json:"total_categories"` // 总分类数（别名）
+	MaxLevel        int64            `json:"max_level"`        // 最大层级
+	FeaturedCount   int64            `json:"featured_count"`   // 特色分类数
+	PhotoCounts     map[string]int64 `json:"photo_counts"`     // 各分类照片数量
+}
+
+// CategoryListParams 分类列表查询参数
+type CategoryListParams struct {
+	Page         int    `json:"page" form:"page"`
+	Limit        int    `json:"limit" form:"limit"`
+	Search       string `json:"search" form:"search"`
+	ParentID     *uint  `json:"parent_id" form:"parent_id"`
+	IsActive     *bool  `json:"is_active" form:"is_active"`
+	IncludeStats bool   `json:"include_stats" form:"include_stats"`
+	SortBy       string `json:"sort_by" form:"sort_by"`
+	Order        string `json:"order" form:"order"`
+}
+
+// CreateCategoryRequest 创建分类请求
+type CreateCategoryRequest struct {
+	Name        string `json:"name" binding:"required,max=100"`
+	Slug        string `json:"slug" binding:"required,max=100"`
+	Description string `json:"description" binding:"max=500"`
+	ParentID    *uint  `json:"parent_id"`
+	Color       string `json:"color" binding:"max=7"`
+	CoverImage  string `json:"cover_image" binding:"max=500"`
+	Sort        int    `json:"sort"`
+}
+
+// UpdateCategoryRequest 更新分类请求
+type UpdateCategoryRequest struct {
+	Name        *string `json:"name" binding:"omitempty,max=100"`
+	Slug        *string `json:"slug" binding:"omitempty,max=100"`
+	Description *string `json:"description" binding:"max=500"`
+	ParentID    *uint   `json:"parent_id"`
+	Color       *string `json:"color" binding:"omitempty,max=7"`
+	CoverImage  *string `json:"cover_image" binding:"omitempty,max=500"`
+	SortOrder   *int    `json:"sort_order"`
+	IsActive    *bool   `json:"is_active"`
+}
+
+// ReorderCategoriesRequest 重新排序分类请求
+type ReorderCategoriesRequest struct {
+	ParentID    *uint  `json:"parent_id"`
+	CategoryIDs []uint `json:"category_ids" binding:"required,min=1"`
+}
+
+// GenerateSlugRequest 生成slug请求
+type GenerateSlugRequest struct {
+	Name string `json:"name" binding:"required,max=100"`
+}
+
+// GenerateSlugResponse 生成slug响应
+type GenerateSlugResponse struct {
+	Slug string `json:"slug"`
+}
+
+// SuccessResponse 成功响应
+type SuccessResponse struct {
+	Message string `json:"message"`
+}
+
+// TableName 指定表名
+func (Category) TableName() string {
+	return "categories"
+}
+
+// IsTopLevel 检查是否为顶级分类
+func (c *Category) IsTopLevel() bool {
+	return c.ParentID == nil
+}
+
+// HasChildren 检查是否有子分类
+func (c *Category) HasChildren() bool {
+	return len(c.Children) > 0
+}