package models

import (
	"time"

	"github.com/google/uuid"
)

// PostCategory represents a blog post category with optional parent-child hierarchy.
type PostCategory struct {
	ID          uuid.UUID      `gorm:"type:uuid;default:gen_random_uuid();primaryKey" json:"id"`
	Title       string         `gorm:"type:varchar(254);not null" json:"title"`
	Keywords    string         `gorm:"type:varchar(254);not null" json:"keywords"`
	Description string         `gorm:"type:varchar(254);not null" json:"description"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`
	IsActive    bool           `gorm:"default:true" json:"is_active"`
	Order       int            `gorm:"default:1;index" json:"order"`
	Slug        string         `gorm:"type:varchar(250);uniqueIndex:idx_post_category_slug_parent;not null" json:"slug"`
	ParentID    *uuid.UUID     `gorm:"uniqueIndex:idx_post_category_slug_parent" json:"parent_id,omitempty"`
	Parent      *PostCategory  `gorm:"foreignKey:ParentID" json:"parent,omitempty"`
	Children    []PostCategory `gorm:"foreignKey:ParentID" json:"children,omitempty"`
	Image       string         `gorm:"type:text" json:"image,omitempty"`
	Posts       []Post         `gorm:"many2many:post_post_categories;" json:"posts,omitempty"`
}

// TableName overrides the table name used by PostCategory.
func (PostCategory) TableName() string {
	return "post_categories"
}