package model

import (
	"time"

	"github.com/google/uuid"
	"gorm.io/gorm"
)

// Channel 频道配置（用于帖子分区）
type Channel struct {
	ID          string    `json:"id" gorm:"type:varchar(36);primaryKey"`
	Name        string    `json:"name" gorm:"type:varchar(100);not null"`
	Slug        string    `json:"slug" gorm:"type:varchar(100);uniqueIndex;not null"`
	Description string    `json:"description" gorm:"type:varchar(255)"`
	SortOrder   int       `json:"sort_order" gorm:"default:0;index"`
	IsActive    bool      `json:"is_active" gorm:"default:true;index"`
	CreatedAt   time.Time `json:"created_at" gorm:"autoCreateTime"`
	UpdatedAt   time.Time `json:"updated_at" gorm:"autoUpdateTime"`
}

func (c *Channel) BeforeCreate(tx *gorm.DB) error {
	if c.ID == "" {
		c.ID = uuid.New().String()
	}
	return nil
}

func (Channel) TableName() string {
	return "channels"
}