package mysqldao

import (
	"context"

	"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/global"
	"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/internal/mysqlmodel"
	"gorm.io/gorm"
)

// NotificationDao 通知数据访问
type NotificationDao struct {
	db *gorm.DB
}

// NewNotificationDao 创建通知 DAO
func NewNotificationDao() *NotificationDao {
	return &NotificationDao{db: global.MysqlEngine}
}

// NotificationBatchCreate 批量插入通知（单用户/分片广播共用）
func (d *NotificationDao) NotificationBatchCreate(ctx context.Context, notifications []mysqlmodel.UserNotification) error {
	ctx, span := global.Tracer.Start(ctx, "mysqldao.NotificationBatchCreate")
	defer span.End()

	if len(notifications) == 0 {
		return nil
	}
	if err := d.db.WithContext(ctx).CreateInBatches(notifications, 500).Error; err != nil {
		span.RecordError(err)
		return err
	}
	return nil
}