/**
 * Part Category Entity
 * Mecánicas Diesel - ERP Suite
 *
 * Represents part categories with hierarchical structure.
 */

import {
  Entity,
  PrimaryGeneratedColumn,
  Column,
  CreateDateColumn,
  UpdateDateColumn,
  ManyToOne,
  OneToMany,
  JoinColumn,
  Index,
} from 'typeorm';

@Entity({ name: 'part_categories', schema: 'parts_management' })
@Index('idx_part_categories_tenant', ['tenantId'])
@Index('idx_part_categories_parent', ['parentId'])
export class PartCategory {
  @PrimaryGeneratedColumn('uuid')
  id: string;

  @Column({ name: 'tenant_id', type: 'uuid' })
  tenantId: string;

  @Column({ type: 'varchar', length: 100 })
  name: string;

  @Column({ type: 'varchar', length: 300, nullable: true })
  description?: string;

  @Column({ name: 'parent_id', type: 'uuid', nullable: true })
  parentId?: string;

  @Column({ name: 'sort_order', type: 'integer', default: 0 })
  sortOrder: number;

  @CreateDateColumn({ name: 'created_at', type: 'timestamptz' })
  createdAt: Date;

  @UpdateDateColumn({ name: 'updated_at', type: 'timestamptz' })
  updatedAt: Date;

  // Relations
  @ManyToOne(() => PartCategory, category => category.children, { nullable: true })
  @JoinColumn({ name: 'parent_id' })
  parent?: PartCategory;

  @OneToMany(() => PartCategory, category => category.parent)
  children: PartCategory[];
}