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<?php

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namespace Yoast\WP\SEO\Integrations\Admin;

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use Yoast\WP\SEO\Conditionals\Admin_Conditional;

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use Yoast\WP\SEO\Integrations\Integration_Interface;

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use Yoast\WP\SEO\Services\Health_Check\Health_Check;

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/**

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* Integrates health checks with WordPress' Site Health.

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class Health_Check_Integration implements Integration_Interface {

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/**

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* Contains all the health check implementations.

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* @var Health_Check[]

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private $health_checks = [];

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/**

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* Uses the dependency injection container to obtain all available implementations of the Health_Check interface.

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* @param Health_Check ...$health_checks The available health checks implementations.

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public function __construct( Health_Check ...$health_checks ) {

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$this->health_checks = $health_checks;

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}

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/**

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* Hooks the health checks into WordPress' site status tests.

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* @return void

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public function register_hooks() {

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\add_filter( 'site_status_tests', [ $this, 'add_health_checks' ] );

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}

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/**

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* Returns the conditionals based on which this loadable should be active.

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* In this case: only when on an admin page.

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* @return array The conditionals.

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public static function get_conditionals() {

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return [ Admin_Conditional::class ];

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}

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/**

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* Checks if the input is a WordPress site status tests array, and adds Yoast's health checks if it is.

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* @param string[] $tests Array containing WordPress site status tests.

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* @return string[] Array containing WordPress site status tests with Yoast's health checks.

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public function add_health_checks( $tests ) {

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if ( ! $this->is_valid_site_status_tests_array( $tests ) ) {

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return $tests;

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}

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return $this->add_health_checks_to_site_status_tests( $tests );

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}

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/**

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* Checks if the input array is a WordPress site status tests array.

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* @param mixed $tests Array to check.

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* @return bool Returns true if the input array is a WordPress site status tests array.

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private function is_valid_site_status_tests_array( $tests ) {

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if ( ! \is_array( $tests ) ) {

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return false;

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}

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if ( ! \array_key_exists( 'direct', $tests ) ) {

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return false;

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}

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if ( ! \is_array( $tests['direct'] ) ) {

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return false;

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}

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return true;

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}

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/**

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* Adds the health checks to WordPress' site status tests.

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* @param string[] $tests Array containing WordPress site status tests.

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* @return string[] Array containing WordPress site status tests with Yoast's health checks.

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private function add_health_checks_to_site_status_tests( $tests ) {

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foreach ( $this->health_checks as $health_check ) {

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$tests['direct'][ $health_check->get_test_identifier() ] = [

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'test' => [ $health_check, 'run_and_get_result' ],

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];

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}

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return $tests;

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}

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}

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