<?php
/**
 * Cleans up PPE data when a product is deleted.
 *
 * @package ProfitEngine
 */

declare( strict_types=1 );

namespace ProfitEngine\Infrastructure;

use ProfitEngine\Forecasting\ForecastRepository;
use ProfitEngine\Purchasing\ProductSettingsRepository;
use ProfitEngine\Purchasing\SupplierProductRepository;

defined( 'ABSPATH' ) || exit;

/**
 * Removes purchasing config (settings, forecast, supplier links) for a product
 * or variation when it is permanently deleted, so no orphan rows accumulate.
 *
 * Historical cost_records and stock_movements are deliberately preserved — they
 * are the profit/audit history and must survive a product's deletion.
 */
class ProductCleanup {

	private ProductSettingsRepository $settings;

	private SupplierProductRepository $supplier_products;

	private ForecastRepository $forecasts;

	/**
	 * Constructor.
	 *
	 * @param ProductSettingsRepository $settings          Settings repo.
	 * @param SupplierProductRepository $supplier_products Supplier-product repo.
	 * @param ForecastRepository        $forecasts         Forecast repo.
	 */
	public function __construct(
		ProductSettingsRepository $settings,
		SupplierProductRepository $supplier_products,
		ForecastRepository $forecasts
	) {
		$this->settings          = $settings;
		$this->supplier_products = $supplier_products;
		$this->forecasts         = $forecasts;
	}

	/**
	 * Register the delete hook.
	 */
	public function register_hooks(): void {
		add_action( 'before_delete_post', array( $this, 'on_delete_post' ), 20, 1 );
		// WooCommerce fires these for CRUD-based deletes as well.
		add_action( 'woocommerce_before_delete_product', array( $this, 'clean' ), 20, 1 );
		add_action( 'woocommerce_before_delete_product_variation', array( $this, 'clean' ), 20, 1 );
	}

	/**
	 * Handle a post deletion, acting only on product / variation post types.
	 *
	 * @param int $post_id Post ID.
	 */
	public function on_delete_post( int $post_id ): void {
		if ( in_array( get_post_type( $post_id ), array( 'product', 'product_variation' ), true ) ) {
			$this->clean( $post_id );
		}
	}

	/**
	 * Remove purchasing config for a product/variation ID.
	 *
	 * @param int $product_id Product or variation ID.
	 */
	public function clean( int $product_id ): void {
		if ( $product_id <= 0 ) {
			return;
		}
		$this->settings->delete( $product_id );
		$this->supplier_products->delete_by_product( $product_id );
		$this->forecasts->delete( $product_id );
	}
}