package models

import "clapclap/internal/uuid"

// Genre supports a recursive tree (Sub-genres) and many-to-many track linking.
type Genre struct {
	Base
	Name string `gorm:"type:varchar(50);uniqueIndex;not null" json:"name"`

	// Self-referencing tree logic
	// TODO (pipo) : use anonymous TreeNode[uuid.UUID] field instead
	ParentID  *uuid.UUID `gorm:"type:uuid;index" json:"parent_id,omitempty"`
	Parent    *Genre     `gorm:"foreignKey:ParentID" json:"parent,omitempty"`
	SubGenres []Genre    `gorm:"foreignKey:ParentID" json:"sub_genres,omitempty"`

	// Back-reference to tracks (many2many)
	Tracks []Track `gorm:"many2many:track_genres;" json:"tracks,omitempty"`
}