package models

import (
	"time"

	"gorm.io/gorm"
)

// CollectionAsset 典藏藏品表模型
type CollectionAsset struct {
	ID          int64  `gorm:"primaryKey;autoIncrement;column:id"`
	AssetID     int64  `gorm:"unique;not null;column:asset_id"`
	OwnerUID    int64  `gorm:"not null;index:idx_collection_owner_star;column:owner_uid"`
	StarID      int64  `gorm:"not null;index:idx_collection_owner_star;column:star_id"`
	Name        string `gorm:"type:varchar(100);not null;column:name"`
	CoverURL    string `gorm:"type:varchar(500);not null;column:cover_url"`
	Category    string `gorm:"type:varchar(50);not null;index:idx_collection_category;column:category"`
	LikeCount   int32  `gorm:"default:0;column:like_count"`
	Status      int32  `gorm:"default:0;column:status"` // 0=Pending, 1=Active
	Metadata    JSONB  `gorm:"type:jsonb;column:metadata"`
	CreatedAt   int64  `gorm:"not null;column:created_at"`
	UpdatedAt   int64  `gorm:"not null;column:updated_at"`
}

// TableName 指定表名
func (CollectionAsset) TableName() string {
	return "collection_assets"
}

// BeforeCreate 创建前钩子
func (c *CollectionAsset) BeforeCreate(tx *gorm.DB) error {
	now := time.Now().UnixMilli()
	c.CreatedAt = now
	c.UpdatedAt = now
	if c.Status == 0 {
		c.Status = AssetStatusPending
	}
	return nil
}

// BeforeUpdate 更新前钩子
func (c *CollectionAsset) BeforeUpdate(tx *gorm.DB) error {
	c.UpdatedAt = time.Now().UnixMilli()
	return nil
}

// 典藏藏品状态常量
const (
	CollectionAssetStatusPending = 0 // 待处理
	CollectionAssetStatusActive  = 1 // 已激活
)

// JSONB 是 GORM 的 jsonb 类型别名
type JSONB []byte

// Scan 实现 sql.Scanner 接口
func (j *JSONB) Scan(value interface{}) error {
	if value == nil {
		*j = nil
		return nil
	}
	bytes, ok := value.([]byte)
	if !ok {
		*j = nil
		return nil
	}
	*j = bytes
	return nil
}