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<?php

namespace DeliciousBrains\WPMDB\Pro\Migration;

use DeliciousBrains\WPMDB\Common\Error\ErrorLog;
use DeliciousBrains\WPMDB\Common\FormData\FormData;
use DeliciousBrains\WPMDB\Common\Http\Helper;
use DeliciousBrains\WPMDB\Common\Http\Http;
use DeliciousBrains\WPMDB\Common\Http\Scramble;
use DeliciousBrains\WPMDB\Common\Http\WPMDBRestAPIServer;
use DeliciousBrains\WPMDB\Common\Migration\FinalizeMigration;
use DeliciousBrains\WPMDB\Common\Migration\Flush as Migration_Flush;
use DeliciousBrains\WPMDB\Common\Migration\MigrationManager;
use DeliciousBrains\WPMDB\Common\MigrationPersistence\Persistence;
use DeliciousBrains\WPMDB\Common\MigrationState\MigrationStateManager;
use DeliciousBrains\WPMDB\Common\Properties\Properties;
use DeliciousBrains\WPMDB\Common\Settings\Settings;

class FinalizeComplete
{
    /**
     * @var Scramble
     */
    private $scrambler;
    /**
     * @var MigrationStateManager
     */
    private $migration_state_manager;
    /**
     * @var Http
     */
    private $http;
    /**
     * @var Helper
     */
    private $http_helper;
    /**
     * @var Properties
     */
    private $props;
    /**
     * @var ErrorLog
     */
    private $error_log;
    /**
     * @var MigrationManager
     */
    private $migration_manager;
    /**
     * @var FormData
     */
    private $form_data;
    /**
     * @var FinalizeMigration
     */
    private $finalize;
    /**
     * @var Settings
     */
    private $settings;
    /**
     * @var WPMDBRestAPIServer
     */
    private $rest_API_server;
    /**
     * @var Migration_Flush
     */
    private $flush;

public function __construct(
        Scramble $scrambler,
        MigrationStateManager $migration_state_manager,
        Http $http,
        Helper $http_helper,
        Properties $props,
        ErrorLog $error_log,
        MigrationManager $migration_manager,
        FormData $form_data,
        FinalizeMigration $finalize,
        Settings $settings,
        WPMDBRestAPIServer $rest_API_server,
        Migration_Flush $flush
    ) {
        $this->scrambler               = $scrambler;
        $this->migration_state_manager = $migration_state_manager;
        $this->http                    = $http;
        $this->http_helper             = $http_helper;
        $this->props                   = $props;
        $this->error_log               = $error_log;
        $this->migration_manager       = $migration_manager;
        $this->form_data               = $form_data;
        $this->finalize                = $finalize;
        $this->settings                = $settings->get_settings();
        $this->rest_API_server         = $rest_API_server;
        $this->flush                   = $flush;
    }

public function register()
    {
        add_action('rest_api_init', [$this, 'register_rest_routes']);

add_action('wp_ajax_nopriv_wpmdb_remote_finalize_migration', [$this, 'respond_to_remote_finalize_migration']);
        add_action('wp_ajax_nopriv_wpmdb_remote_flush', [$this, 'respond_to_remote_flush']);
        add_action('wp_ajax_nopriv_wpmdb_fire_migration_complete', [$this, 'fire_migration_complete']);
    }

public function register_rest_routes()
    {
        $this->rest_API_server->registerRestRoute('/migration-complete', [
            'methods'  => 'POST',
            'callback' => [$this, 'fire_migration_complete'],
        ]);
    }

public function respond_to_remote_flush()
    {
        add_filter('wpmdb_before_response', array($this->scrambler, 'scramble'));

$key_rules  = array(
            'action' => 'key',
            'sig'    => 'string',
        );
        $state_data = $this->migration_state_manager->set_post_data($key_rules);

$filtered_post = $this->http_helper->filter_post_elements($state_data, array('action'));

if (!$this->http_helper->verify_signature($filtered_post, $this->settings['key'])) {
            $error_msg = $this->props->invalid_content_verification_error . ' (#123)';
            $result    = $this->http->end_ajax(new \WP_Error('wpmdb_invalid_content_verification_error', $error_msg));

return $result;
        }

$return = $this->flush->flush();
        $result = $this->http->end_ajax($return);

return $result;
    }

/**
     * The remote's handler for a request to finalize a migration.
     *
     * @return bool|null
     */
    function respond_to_remote_finalize_migration()
    {
        add_filter('wpmdb_before_response', array($this->scrambler, 'scramble'));

$key_rules = array(
            'action'       => 'key',
            'intent'       => 'key',
            'url'          => 'url',
            'form_data'    => 'string',
            'tables'       => 'string',
            'temp_prefix'  => 'string',
            'site_details' => 'string',
            'prefix'       => 'string',
            'stage'        => 'string',
            'type'         => 'key',
            'location'     => 'url',
            'sig'          => 'string',
        );

$state_data = Persistence::setRemotePostData($key_rules, __METHOD__);

$filtered_post = $this->http_helper->filter_post_elements(
            $state_data,
            array(
                'action',
                'intent',
                'url',
                'form_data',
                'site_details',
                'tables',
                'temp_prefix',
                'prefix',
                'type',
                'location',
            )
        );

return $result;
        }

$this->form_data            = base64_decode($filtered_post['form_data']);
        $state_data['site_details'] = json_decode(base64_decode($state_data['site_details']), true);
        do_action('wpmdb_remote_finalize', $state_data);
        $return = $this->finalize->finalize_migration($state_data);
        $result = $this->http->end_ajax($return);

return $result;
    }

/**
     * Triggers the wpmdb_migration_complete action once the migration is complete.
     *
     * @return bool|null
     */
    public function fire_migration_complete()
    {
        $state_data    = Persistence::setPostData(
            [
                'action' => 'string',
                'url'    => 'string',
                'sig'    => 'string',
            ],
            __METHOD__
        );
        $filtered_post = $this->http_helper->filter_post_elements($state_data, array('action', 'url'));

if (!$this->http_helper->verify_signature($filtered_post, $this->settings['key'])) {
            $error_msg = $this->props->invalid_content_verification_error . ' (#138)';
            $result    = $this->http->end_ajax(new \WP_Error('wpmdb_invalid_content_verification_error', $error_msg));

return $result;
        }

do_action('wpmdb_migration_complete', 'pull', $state_data['url'], '');
        $result = $this->http->end_ajax(true);

return $result;
    }
}