/**
 * Base Entity - Common fields for all entities in ERP-Suite
 *
 * @module @erp-suite/core/entities
 */

import {
  PrimaryGeneratedColumn,
  Column,
  CreateDateColumn,
  UpdateDateColumn,
  DeleteDateColumn,
} from 'typeorm';

/**
 * Base entity with common audit fields
 *
 * All entities in ERP-Suite should extend this class to inherit:
 * - id: UUID primary key
 * - tenantId: Multi-tenancy isolation
 * - Audit fields (created, updated, deleted)
 * - Soft delete support
 *
 * @example
 * ```typescript
 * @Entity('partners', { schema: 'erp' })
 * export class Partner extends BaseEntity {
 *   @Column()
 *   name: string;
 * }
 * ```
 */
export abstract class BaseEntity {
  @PrimaryGeneratedColumn('uuid')
  id: string;

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

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

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

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

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

  @DeleteDateColumn({ name: 'deleted_at', type: 'timestamptz', nullable: true })
  deletedAt?: Date;

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