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✏️ Editing: LanguageFeedManagementTrait.php

<?php
/**
 * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
 *
 * This source code is licensed under the license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @package FacebookCommerce
 */

namespace WooCommerce\Facebook\Feed\Localization;

defined( 'ABSPATH' ) || exit;

use WooCommerce\Facebook\Framework\Logger;

/**
 * Language Feed Management Trait
 *
 * Consolidates common functionality for language override feed management
 * including API instance management, feed ID storage/retrieval, and upload status.
 * This eliminates duplication across multiple language feed classes.
 *
 * @since 3.6.0
 */
trait LanguageFeedManagementTrait {

/** @var \WooCommerce\Facebook\API */
	private $api;

/**
	 * Gets the API instance.
	 *
	 * @since 3.6.0
	 * @return \WooCommerce\Facebook\API
	 */
	private function get_api() {
		if ( ! $this->api ) {
			$this->api = facebook_for_woocommerce()->get_api();
		}
		return $this->api;
	}

/**
	 * Store the Facebook feed ID for a language.
	 *
	 * @param string $language_code Language code
	 * @param string $feed_id Facebook feed ID
	 * @since 3.6.0
	 */
	private function store_language_feed_id( string $language_code, string $feed_id ): void {
		$stored_feeds = get_option( 'wc_facebook_language_feed_ids', [] );
		$stored_feeds[ $language_code ] = $feed_id;
		update_option( 'wc_facebook_language_feed_ids', $stored_feeds );
	}

/**
	 * Retrieves or creates a language override feed ID.
	 *
	 * @param string $language_code Language code
	 * @return string Feed ID
	 * @since 3.6.0
	 */
	public function retrieve_or_create_language_feed_id( string $language_code ): string {
		// Attempt 1. Request feeds data from Meta and filter the right one
		$feed_id = $this->request_and_filter_language_feed_id( $language_code );
		if ( $feed_id ) {
			$this->store_language_feed_id( $language_code, $feed_id );
			return $feed_id;
		}

// Attempt 2. Create a new feed
		$feed_id = $this->create_language_feed_id( $language_code );
		if ( $feed_id ) {
			$this->store_language_feed_id( $language_code, $feed_id );
			return $feed_id;
		}

return '';
	}

/**
	 * Queries existing feeds for the integration catalog and filters
	 * the language override feed ID for a specific language.
	 *
	 * @param string $language_code Language code
	 * @throws \Exception If catalog operations fail.
	 * @return string Feed ID
	 * @since 3.6.0
	 */
	private function request_and_filter_language_feed_id( string $language_code ): string {
		try {
			$catalog_id = facebook_for_woocommerce()->get_integration()->get_product_catalog_id();
			if ( '' === $catalog_id ) {
				throw new \Exception( 'No catalog ID' );
			}
			$feed_nodes = $this->get_api()->read_feeds( $catalog_id )->data;
		} catch ( \Exception $e ) {
			$message = sprintf( 'There was an error trying to get feed nodes for catalog: %s', $e->getMessage() );
			Logger::log(
				$message,
				[],
				array(
					'should_send_log_to_meta'        => false,
					'should_save_log_in_woocommerce' => true,
					'woocommerce_log_level'          => \WC_Log_Levels::ERROR,
				)
			);
			return '';
		}

if ( empty( $feed_nodes ) ) {
			return '';
		}

$fb_language_code = \WooCommerce\Facebook\Locale::convert_to_facebook_language_code( $language_code );
		$expected_feed_name = sprintf( 'WooCommerce Language Override Feed (%s)', strtoupper( $fb_language_code ) );

foreach ( $feed_nodes as $feed ) {
			try {
				$feed_metadata = $this->get_api()->read_feed( $feed['id'] );
			} catch ( \Exception $e ) {
				$message = sprintf( 'There was an error trying to get feed metadata: %s', $e->getMessage() );
				Logger::log(
					$message,
					[],
					array(
						'should_send_log_to_meta'        => false,
						'should_save_log_in_woocommerce' => true,
						'woocommerce_log_level'          => \WC_Log_Levels::ERROR,
					)
				);
				continue;
			}

if ( $expected_feed_name === $feed_metadata['name'] ) {
				return $feed['id'];
			}
		}

return '';
	}

/**
	 * Creates a new language override feed on Facebook.
	 *
	 * @param string $language_code Language code
	 * @throws \Exception If feed creation fails.
	 * @return string Feed ID
	 * @since 3.6.0
	 */
	private function create_language_feed_id( string $language_code ): string {
		try {
			$catalog_id = facebook_for_woocommerce()->get_integration()->get_product_catalog_id();
			if ( '' === $catalog_id ) {
				throw new \Exception( 'No catalog ID' );
			}

$fb_language_code = \WooCommerce\Facebook\Locale::convert_to_facebook_language_code( $language_code );
			$override_value = \WooCommerce\Facebook\Locale::convert_to_facebook_override_value( $fb_language_code );

$feed_data = [
				'name' => self::generate_language_feed_name( $language_code ),
				'file_name' => self::generate_language_feed_filename( $language_code, true ), // For Facebook API
				'override_type' => 'language',
				'override_value' => $override_value,
			];

$response = $this->get_api()->create_feed( $catalog_id, $feed_data );

if ( $response && isset( $response['id'] ) ) {
				return $response['id'];
			}
		} catch ( \Exception $exception ) {
			Logger::log(
				'Could not create language override feed: ' . $exception->getMessage(),
				array(
					'language_code' => $language_code,
				),
				array(
					'should_send_log_to_meta'        => false,
					'should_save_log_in_woocommerce' => true,
					'woocommerce_log_level'          => \WC_Log_Levels::ERROR,
				)
			);
		}

return '';
	}

/**
	 * Get the feed secret.
	 * Uses the same secret as the main product feed for consistency.
	 *
	 * @return string
	 * @since 3.6.0
	 */
	protected function get_feed_secret(): string {
		return \WooCommerce\Facebook\Products\Feed::get_feed_secret();
	}

/**
	 * Generate a consistent file name for language override feeds.
	 * This provides a single source of truth for file naming across all language feed operations.
	 * Uses the feed secret hash (like the main product feed) to ensure the same filename is reused.
	 *
	 * @param string $language_code Language code (e.g., 'es_ES', 'fr_FR')
	 * @param bool   $for_facebook_api Whether this file name is for Facebook API feed creation
	 * @param bool   $is_temp_file Whether this is for a temporary file
	 * @return string File name
	 * @since 3.6.0
	 */
	public static function generate_language_feed_filename( string $language_code, bool $for_facebook_api = false, bool $is_temp_file = false ): string {
		$fb_language_code = \WooCommerce\Facebook\Locale::convert_to_facebook_language_code( $language_code );
		$feed_secret = \WooCommerce\Facebook\Products\Feed::get_feed_secret();

// Use the same filename generation logic for both local and Facebook API
		// This matches the main product feed behavior which reuses the same file
		$prefix = $is_temp_file ? 'temp_' : '';
		$hash_suffix = wp_hash( $feed_secret );

return "facebook_language_feed_{$prefix}{$fb_language_code}_{$hash_suffix}.csv";
	}

/**
	 * Generate a consistent feed name for Facebook API feed creation.
	 * This provides a single source of truth for feed names in Facebook's catalog.
	 *
	 * @param string $language_code Language code (e.g., 'es_ES', 'fr_FR')
	 * @return string Feed name for Facebook API
	 * @since 3.6.0
	 */
	public static function generate_language_feed_name( string $language_code ): string {
		$fb_language_code = \WooCommerce\Facebook\Locale::convert_to_facebook_language_code( $language_code );
		return sprintf( 'WooCommerce Language Override Feed (%s)', strtoupper( $fb_language_code ) );
	}
}

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